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• JavaFX FXML communication between Application and Controller classes

  - by likethesky

  I am trying to get and destroy an external process I've created via ProcessBuilder in my FXML application close, but it's not working. This is based on the helpful advice Sergey Grinev gave me here. I have tried running with/without the "// myController.setApp(this);" and with "// super.stop();" at top of subclass and at bottom (see commented out/in for that line in MyApp), but no combination works. This probably isn't related to FXML or JavaFX, though I imagine this is a common pattern for developing apps on JavaFX. I suppose I'm asking for a Java best practice for closing dependent processes in a UI-based app like this one (in this case: FXML / JavaFX based), where there is a controller class and an application class. Can you explain what I'm doing wrong? Or better: advise what I should be doing instead? Thanks. In my Application I do this: public class MyApp extends Application { @Override public void start(Stage primaryStage) throws Exception { FXMLLoader fxmlLoader = new FXMLLoader(); Scene scene = (Scene)FXMLLoader.load(getClass().getResource("MyApp.fxml")); MyAppController myController = (MyAppController)fxmlLoader.getController(); primaryStage.setScene(scene); primaryStage.show(); // myController.setApp(this); } @Override public void stop() throws Exception { // super.stop(); // this is called on fx app close, you may call it in an action handler too if (MyAppController.getScriptProcess() != null) { MyAppController.getScriptProcess().destroy(); } super.stop(); } public static void main(String[] args) { launch(args); } } In my Controller I do this: public class MyAppController implements Initializable { private Application app; private static Process scriptProcess; public void setApp(Application a) { app = a; } public static Process getScriptProcess() { return scriptProcess; } } The result when I run with the "commented-out setApp()" not commented out (that is, left in the start method), is the following, immediately upon launch (the main Scene flashes, then disappears, then this dialog appears: "JavaFX Launcher Error: Exception while running Application" And it gives an, "Exception in Application start method" in the console as well. The result when I leave out the "commented-out code" in my MyApp above (that is, remove the "setApp()" from the start method), is that my app does indeed close, but gives this error when it closes: Exception in thread "JavaFX Application Thread" java.lang.RuntimeException: java.lang.reflect.InvocationTargetException at javafx.fxml.FXMLLoader$ControllerMethodEventHandler.handle(FXMLLoader.java:1440) at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:69) at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:217) at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:170) at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:38) at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:37) at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:92) at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:35) at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:92) at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:35) at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:92) at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:53) at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:28) at javafx.event.Event.fireEvent(Event.java:171) at javafx.scene.Node.fireEvent(Node.java:6863) at javafx.scene.control.Button.fire(Button.java:179) at com.sun.javafx.scene.control.behavior.ButtonBehavior.mouseReleased(ButtonBehavior.java:193) at com.sun.javafx.scene.control.skin.SkinBase$4.handle(SkinBase.java:336) at com.sun.javafx.scene.control.skin.SkinBase$4.handle(SkinBase.java:329) at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:64) at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:217) at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:170) at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:38) at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:37) at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:92) at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:35) at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:92) at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:35) at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:92) at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:35) at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:92) at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:53) at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:33) at javafx.event.Event.fireEvent(Event.java:171) at javafx.scene.Scene$MouseHandler.process(Scene.java:3324) at javafx.scene.Scene$MouseHandler.process(Scene.java:3164) at javafx.scene.Scene$MouseHandler.access$1900(Scene.java:3119) at javafx.scene.Scene.impl_processMouseEvent(Scene.java:1559) at javafx.scene.Scene$ScenePeerListener.mouseEvent(Scene.java:2261) at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(GlassViewEventHandler.java:228) at com.sun.glass.ui.View.handleMouseEvent(View.java:528) at com.sun.glass.ui.View.notifyMouse(View.java:922) at com.sun.glass.ui.gtk.GtkApplication._runLoop(Native Method) at com.sun.glass.ui.gtk.GtkApplication$3$1.run(GtkApplication.java:82) at java.lang.Thread.run(Thread.java:722) Caused by: java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:601) at javafx.fxml.FXMLLoader$ControllerMethodEventHandler.handle(FXMLLoader.java:1435) ... 44 more Caused by: java.lang.NullPointerException at mypackage.MyController.handleCancel(MyController.java:300) ... 49 more Clean up...

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• How to check all check boxes at a click of a button

  - by LivingThing

  I am new to Swing, UI and MVC I have created a code based on MVC. Now my problem is that that in the controller part i have an actioneventlistener which listens to different button clicks. Out of all those buttons i have "select all" and "de-select all". In my view i have a table, one of the column of that table contains "check boxes". Now, when i click the "select-all" button i want to check all the check boxes and with "de-select all" i want to uncheck all of them. Below is my code which is not working. Please tell me what am i doing wrong here. Also, if someone knows a more elagent way please share. Thanks In my view public class CustomerSelectorDialogUI extends JFrame{ public CustomerSelectorDialogUI(TestApplicationUI ownerView, DummyCustomerStore dCStore, boolean modality) { //super(ownerView, modality); setTitle("[=] Customer Selection Dialog [=]"); //setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE); custSelectPanel = new JPanel(); buttonPanel = new JPanel(); selectAllButton = new JButton(" Select All "); clearAllButton = new JButton(" Clear All "); applyButton = new JButton(" Apply "); cancelButton = new JButton(" Cancel "); PopulateAndShow(dCStore, Boolean.FALSE); } public void PopulateAndShow(DummyCustomerStore dCStore, Boolean select) { List data = new ArrayList(); for (Customer customer : dCStore.getAllCustomers()) { Object record[] = new Object[COLUMN_COUNT]; record[0] = (select == false) ? Boolean.FALSE : Boolean.TRUE; record[1] = Integer.toString(customer.customerId); record[2] = customer.fullName; data.add(record); } tModel = new TableModel(data); // In the above for loop accoring to user input (i.e click on check all or // uncheck all) i have tried to update the data. As it can be seen that i // have a condition for record[0]. //After the loop, here i have tried several options like validate(). repaint but to no avail customerTable = new JTable(tModel); scrollPane = new JScrollPane(customerTable); setContentPane(this.createContentPane()); setSize(480, 580); setResizable(false); setVisible(true); } private JPanel createContentPane() { custSelectPanel.setLayout(null); customerTable.setDragEnabled(false); customerTable.setFillsViewportHeight(true); scrollPane.setLocation(10, 10); scrollPane.setSize(450,450); custSelectPanel.add(scrollPane); buttonPanel.setLayout(null); buttonPanel.setLocation(10, 480); buttonPanel.setSize(450, 100); custSelectPanel.add(buttonPanel); selectAllButton.setLocation(0, 0); selectAllButton.setSize(100, 40); buttonPanel.add(selectAllButton); clearAllButton.setLocation(110, 0); clearAllButton.setSize(100, 40); buttonPanel.add(clearAllButton); applyButton.setLocation(240, 0); applyButton.setSize(100, 40); buttonPanel.add(applyButton); cancelButton.setLocation(350, 0); cancelButton.setSize(100, 40); buttonPanel.add(cancelButton); return custSelectPanel; } } Table Model private class TableModel extends AbstractTableModel { private List data; public TableModel(List data) { this.data = data; } private String[] columnNames = {"Selected ", "Customer Id ", "Customer Name " }; public int getColumnCount() { return COLUMN_COUNT; } public int getRowCount() { return data == null ? 0 : data.size(); } public String getColumnName(int col) { return columnNames[col]; } public void setValueAt(Object value, int rowIndex, int columnIndex) { getRecord(rowIndex)[columnIndex] = value; super.fireTableCellUpdated(rowIndex, columnIndex); } private Object[] getRecord(int rowIndex) { return (Object[]) data.get(rowIndex); } public Object getValueAt(int rowIndex, int columnIndex) { return getRecord(rowIndex)[columnIndex]; } public Class getColumnClass(int columnIndex) { if (data == null || data.size() == 0) { return Object.class; } Object o = getValueAt(0, columnIndex); return o == null ? Object.class : o.getClass(); } public boolean isCellEditable(int row, int col) { if (col > 0) { return false; } else { return true; } } } } A Views Action Listener class CustomerSelectorUIListener implements ActionListener{ CustomerSelectorDialogUI custSelectView; Controller controller; public CustomerSelectorUIListener (Controller controller, CustomerSelectorDialogUI custSelectView) { this.custSelectView = custSelectView; this.controller = controller; } @Override public void actionPerformed(ActionEvent e) { String actionEvent = e.getActionCommand(); else if ( actionEvent.equals( "clearAllButton" ) ) { controller.checkButtonControl(false); } else if ( actionEvent.equals( "selectAllButton" ) ) { controller.checkButtonControl(true); } } } Main Controller public class Controller implements ActionListener{ CustomerSelectorDialogUI selectUI; DummyCustomerStore store; public Controller( DummyCustomerStore store, TestApplicationUI appUI ) { this.store = store; this.appUI = appUI; appUI.ButtonListener( this ); } @Override public void actionPerformed(ActionEvent event) { String viewAction = event.getActionCommand(); if (viewAction.equals("TEST")) { selectUI = new CustomerSelectorDialogUI(appUI, store, true); selectUI.showTextActionListeners(new CustomerSelectorUIListener( this, selectUI ) ); selectUI.setVisible( true ); } } public void checkButtonControl (Boolean checkAll) { selectUI.PopulateAndShow(store, checkAll); } }

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• javascript robot

  - by sarah

  hey guys! I need help making this robot game in javascript (notepad++) please HELP! I'm really confused by the functions <html> <head><title>Robot Invasion 2199</title></head> <body style="text-align:center" onload="newGame();"> <h2>Robot Invasion 2199</h2> <div style="text-align:center; background:white; margin-right: auto; margin-left:auto;"> <div style=""> <div style="width: auto; border:solid thin red; text-align:center; margin:10px auto 10px auto; padding:1ex 0ex;font-family: monospace" id="scene"></pre> </div> <div><span id="status"></span></div> <form style="text-align:center"> PUT THE CONTROL PANEL HERE!!! </form> </div> <script type="text/javascript"> // GENERAL SUGGESTIONS ABOUT WRITING THIS PROGRAM: // You should test your program before you've finished writing all of the // functions. The newGame, startLevel, and update functions should be your // first priority since they're all involved in displaying the initial state // of the game board. // // Next, work on putting together the control panel for the game so that you // can begin to interact with it. Your next goal should be to get the move // function working so that everything else can be testable. Note that all nine // of the movement buttons (including the pass button) should call the move // function when they are clicked, just with different parameters. // // All the remaining functions can be completed in pretty much any order, and // you'll see the game gradually improve as you write the functions. // // Just remember to keep your cool when writing this program. There are a // bunch of functions to write, but as long as you stay focused on the function // you're writing, each individual part is not that hard. // These variables specify the number of rows and columns in the game board. // Use these variables instead of hard coding the number of rows and columns // in your loops, etc. // i.e. Write: // for(i = 0; i < NUM_ROWS; i++) ... // not: // for(i = 0; i < 15; i++) ... var NUM_ROWS = 15; var NUM_COLS = 25; // Scene is arguably the most important variable in this whole program. It // should be set up as a two-dimensional array (with NUM_ROWS rows and // NUM_COLS columns). This represents the game board, with the scene[i][j] // representing what's in row i, column j. In particular, the entries should // be: // // "." for empty space // "R" for a robot // "S" for a scrap pile // "H" for the hero var scene; // These variables represent the row and column of the hero's location, // respectively. These are more of a conveniece so you don't have to search // for the "H" in the scene array when you need to know where the hero is. var heroRow; var heroCol; // These variables keep track of various aspects of the gameplay. // score is just the number of robots destroyed. // screwdrivers is the number of sonic screwdriver charges left. // fastTeleports is the number of fast teleports remaining. // level is the current level number. // Be sure to reset all of these when a new game starts, and update them at the // appropriate times. var score; var screwdrivers; var fastTeleports; var level; // This function should use a sonic screwdriver if there are still charges // left. The sonic screwdriver turns any robot that is in one of the eight // squares immediately adjacent to the hero into scrap. If there are no charges // left, then this function should instead pop up a dialog box with the message // "Out of sonic screwdrivers!". As with any function that alters the game's // state, this function should call the update function when it has finished. // // Your "Sonic Screwdriver" button should call this function directly. function screwdriver() { // WRITE THIS FUNCTION } // This function should move the hero to a randomly selected location if there // are still fast teleports left. This function MUST NOT move the hero on to // a square that is already occupied by a robot or a scrap pile, although it // can move the hero next to a robot. The number of fast teleports should also // be decreased by one. If there are no fast teleports left, this function // should just pop up a message box saying so. As with any function that alters // the game's state, this function should call the update function when it has // finished. // // HINT: Have a loop that keeps trying random spots until a valid one is found. // HINT: Use the validPosition function to tell if a spot is valid // // Your "Fast Teleport" button s

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• Saving to SharedPreferences from custom DialogPreference

  - by Ronnie

  I've currently got a preferences screen, and I've created a custom class that extends DialogPreference and is called from within my Preferences. My preferences data seems store/retrieve from SharedPreferences without an issue, but I'm trying to add 2 more sets of settings from the DialogPreference. Basically I have two issues that I have not been able to find. Every site I've seen gives me the same standard info to save/restore data and I'm still having problems. Firstly I'm trying to save a username and password to my SharedPreferences (visible in the last block of code) and if possibly I'd like to be able to do it in the onClick(). My preferences XML that calls my DialogPreference: <?xml version="1.0" encoding="utf-8"?> <PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"> <PreferenceCategory> <com.rone.optusmon.AccDialog android:key="AccSettings" android:title="Account Settings" android:negativeButtonText="Cancel" android:positiveButtonText="Save" /> </PreferenceCategory> </PreferenceScreen> My Preference Activity Class: package com.rone.optusmon; import android.app.AlertDialog; import android.content.Context; import android.content.DialogInterface; import android.os.Bundle; import android.preference.Preference; import android.preference.Preference.OnPreferenceClickListener; import android.preference.PreferenceActivity; import android.view.KeyEvent; public class EditPreferences extends PreferenceActivity { Context context = this; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); addPreferencesFromResource(R.xml.preferences); } } My Custom DialogPreference Class file: package com.rone.optusmon; import android.content.Context; import android.content.DialogInterface; import android.content.SharedPreferences; import android.preference.DialogPreference; import android.preference.PreferenceManager; import android.text.method.PasswordTransformationMethod; import android.util.AttributeSet; import android.view.View; import android.widget.CheckBox; import android.widget.CompoundButton; import android.widget.CompoundButton.OnCheckedChangeListener; import android.widget.EditText; import android.widget.LinearLayout; import android.widget.TextView; import android.widget.Toast; public class AccDialog extends DialogPreference implements DialogInterface.OnClickListener { private TextView mUsername, mPassword; private EditText mUserbox, mPassbox; CharSequence mPassboxdata, mUserboxdata; private CheckBox mShowchar; private Context mContext; private int mWhichButtonClicked; public AccDialog(Context context, AttributeSet attrs) { super(context, attrs); mContext = context; } @Override protected View onCreateDialogView() { @SuppressWarnings("unused") LinearLayout.LayoutParams params; LinearLayout layout = new LinearLayout(mContext); layout.setOrientation(LinearLayout.VERTICAL); layout.setPadding(10, 10, 10, 10); layout.setBackgroundColor(0xFF000000); mUsername = new TextView(mContext); mUsername.setText("Username:"); mUsername.setTextColor(0xFFFFFFFF); mUsername.setPadding(0, 8, 0, 3); mUserbox = new EditText(mContext); mUserbox.setSingleLine(true); mUserbox.setSelectAllOnFocus(true); mPassword = new TextView(mContext); mPassword.setText("Password:"); mPassword.setTextColor(0xFFFFFFFF); mPassbox = new EditText(mContext); mPassbox.setSingleLine(true); mPassbox.setSelectAllOnFocus(true); mShowchar = new CheckBox(mContext); mShowchar.setOnCheckedChangeListener(mShowchar_listener); mShowchar.setText("Show Characters"); mShowchar.setTextColor(0xFFFFFFFF); mShowchar.setChecked(false); if(!mShowchar.isChecked()) { mPassbox.setTransformationMethod(new PasswordTransformationMethod()); } layout.addView(mUsername); layout.addView(mUserbox); layout.addView(mPassword); layout.addView(mPassbox); layout.addView(mShowchar); return layout; // Access default SharedPreferences SharedPreferences settings = PreferenceManager.getDefaultSharedPreferences(this); } public void onClick(DialogInterface dialog, int which) { mWhichButtonClicked = which; // if statement to set save/cancel button roles if (mWhichButtonClicked == -1) { Toast.makeText(mContext, "Save was clicked", Toast.LENGTH_SHORT).show(); mUserboxdata = mUserbox.getText(); mPassboxdata = mPassbox.getText(); // Save user preferences SharedPreferences settings = getDefaultSharedPreferences(this); SharedPreferences.Editor editor = settings.edit(); editor.putString("usernamekey", (String) mUserboxdata); editor.putString("passwordkey", (String) mPassboxdata); } else { Toast.makeText(mContext, "Cancel was clicked", Toast.LENGTH_SHORT).show(); } } } In my SharedPreferences settings = PreferenceManager.getDefaultSharedPreferences(this); line, Eclipse says "The method getDefaultSharedPreferences(AccDialog) is undefined for the type AccDialog". I've attempted to change the context to my preferences class, use a blank context and I've also tried naming my SharedPrefs and using "getSharedPreferences()" as well. I'm just not sure exactly what I'm doing here. As I'm quite new to Java/Android/coding in general, could you please be as detailed as possible with any help, eg. which of my files I need to write the code in and whereabouts in that file should I write it (i.e. onCreate(), onClick(), etc) Edit: I will need to the preferences to be Application-wide accessible, not activity-wide. Thanks

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• Problem creating calculations 'engine' in two class java calculator

  - by tokee

  i have hit a brick wall whilst attempting to create a two class java calculator but have been unsuccessful so far in getting it working. i have the code for an interface which works and displays ok but creating a seperate class 'CalcEngine' to do the actual calculations has proven to be beyond me. I'd appreciate it if someone could kick start things for me and create a class calcEngine which works with the interface class and allows input when from single button i.e. if one is pressed on the calc then 1 displays onscreen. please note i'm not asking someone to do the whole thing for me as i want to learn and i'm confident i can do the rest including addition subtraction etc. once i get over the obstacle of getting the two classes to communicate. any and all assistance would be very much appreciated. Please see the calcInterface class code below - import java.awt.*; import javax.swing.*; import javax.swing.border.*; import java.awt.event.*; /** *A Class that operates as the framework for a calculator. *No calculations are performed in this section */ public class CalcFrame implements ActionListener { private CalcEngine calc; private JFrame frame; private JTextField display; private JLabel status; /** * Constructor for objects of class GridLayoutExample */ public CalcFrame() { makeFrame(); //calc = engine; } /** * This allows you to quit the calculator. */ // Alows the class to quit. private void quit() { System.exit(0); } // Calls the dialog frame with the information about the project. private void showAbout() { JOptionPane.showMessageDialog(frame, "Group Project", "About Calculator Group Project", JOptionPane.INFORMATION_MESSAGE); } private void makeFrame() { frame = new JFrame("Group Project Calculator"); makeMenuBar(frame); JPanel contentPane = (JPanel)frame.getContentPane(); contentPane.setLayout(new BorderLayout(8, 8)); contentPane.setBorder(new EmptyBorder( 10, 10, 10, 10)); /** * Insert a text field */ display = new JTextField(); contentPane.add(display, BorderLayout.NORTH); //Container contentPane = frame.getContentPane(); contentPane.setLayout(new GridLayout(4, 4)); JPanel buttonPanel = new JPanel(new GridLayout(4, 4)); contentPane.add(new JButton("1")); contentPane.add(new JButton("2")); contentPane.add(new JButton("3")); contentPane.add(new JButton("4")); contentPane.add(new JButton("5")); contentPane.add(new JButton("6")); contentPane.add(new JButton("7")); contentPane.add(new JButton("8")); contentPane.add(new JButton("9")); contentPane.add(new JButton("0")); contentPane.add(new JButton("+")); contentPane.add(new JButton("-")); contentPane.add(new JButton("/")); contentPane.add(new JButton("*")); contentPane.add(new JButton("=")); contentPane.add(new JButton("C")); contentPane.add(buttonPanel, BorderLayout.CENTER); //status = new JLabel(calc.getAuthor()); //contentPane.add(status, BorderLayout.SOUTH); frame.pack(); frame.setVisible(true); } /** * Create the main frame's menu bar. * The frame that the menu bar should be added to. */ private void makeMenuBar(JFrame frame) { final int SHORTCUT_MASK = Toolkit.getDefaultToolkit().getMenuShortcutKeyMask(); JMenuBar menubar = new JMenuBar(); frame.setJMenuBar(menubar); JMenu menu; JMenuItem item; // create the File menu menu = new JMenu("File"); menubar.add(menu); // create the Quit menu with a shortcut "Q" key. item = new JMenuItem("Quit"); item.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_Q, SHORTCUT_MASK)); item.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { quit(); } }); menu.add(item); // Adds an about menu. menu = new JMenu("About"); menubar.add(menu); // Displays item = new JMenuItem("Calculator Project"); item.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { showAbout(); } }); menu.add(item); } /** * An interface action has been performed. * Find out what it was and handle it. * @param event The event that has occured. */ public void actionPerformed(ActionEvent event) { String command = event.getActionCommand(); if(command.equals("0") || command.equals("1") || command.equals("2") || command.equals("3") || command.equals("4") || command.equals("5") || command.equals("6") || command.equals("7") || command.equals("8") || command.equals("9")) { int number = Integer.parseInt(command); calc.numberPressed(number); } else if(command.equals("+")) { calc.plus(); } else if(command.equals("-")) { calc.minus(); } else if(command.equals("=")) { calc.equals(); } else if(command.equals("C")) { calc.clear(); } else if(command.equals("?")) { } // else unknown command. redisplay(); } /** * Update the interface display to show the current value of the * calculator. */ private void redisplay() { display.setText("" + calc.getDisplayValue()); } /** * Toggle the info display in the calculator's status area between the * author and version information. */ }

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• how can we generate the bit greater than 60000?

  - by thinthinyu

  we can now generate about 50000bits. my code cannot generate more than 60000 bit..please help me............m_B is member variable and type is CString. // LFSR_ECDlg.cpp : implementation file // #include "stdafx.h" #include "myecc.h" #include "LFSR_ECDlg.h" #include "MyClass.h" #ifdef _DEBUG #define new DEBUG_NEW #undef THIS_FILE static char THIS_FILE[] = __FILE__; #endif extern MyClass mycrv; ///////////////////////////////////////////////////////////////////////////// // LFSR_ECDlg dialog LFSR_ECDlg::LFSR_ECDlg(CWnd* pParent /*=NULL*/) : CDialog(LFSR_ECDlg::IDD, pParent) { //{{AFX_DATA_INIT(LFSR_ECDlg) m_C1 = 0; m_C2 = 0; m_B = _T(""); m_p = _T(""); m_Qty = 0; m_time = _T(""); //}}AFX_DATA_INIT } void LFSR_ECDlg::DoDataExchange(CDataExchange* pDX) { CDialog::DoDataExchange(pDX); //{{AFX_DATA_MAP(LFSR_ECDlg) DDX_Text(pDX, IDC_C1, m_C1); DDX_Text(pDX, IDC_C2, m_C2); DDX_Text(pDX, IDC_Sequence, m_B); DDX_Text(pDX, IDC_Sequence2, m_p); DDX_Text(pDX, IDC_QTY, m_Qty); DDV_MinMaxLong(pDX, m_Qty, 0, 2147483647); DDX_Text(pDX, IDC_time, m_time); //}}AFX_DATA_MAP } BEGIN_MESSAGE_MAP(LFSR_ECDlg, CDialog) //{{AFX_MSG_MAP(LFSR_ECDlg) ON_WM_SETCURSOR() ON_EN_CHANGE(IDC_Sequence, OnGeneratorLFSR) ON_MESSAGE(WM_MYPAINTMESSAGE,PaintMyCaption)//by ttyu ON_BN_CLICKED(IDC_save, Onsave) //}}AFX_MSG_MAP END_MESSAGE_MAP() ///////////////////////////////////////////////////////////////////////////// // LFSR_ECDlg message handlers bool LFSR_ECDlg::CheckDataEntry() { //if((m_Px>=mycrv.p)|(m_Py>=mycrv.p)) {AfxMessageBox("Seed [P] is invalid!");return false;}//by ttyu if((m_C1<=0) | (m_C1>mycrv.n)) {AfxMessageBox("Constant c1 is not valid!");return false;} if((m_C2<=0 )| (m_C2>mycrv.n)) {AfxMessageBox("Constant c2 is not valid!");return false;} return true; } void LFSR_ECDlg::OnOK() { UpdateData(true); static int stime,etime,dtime; CString txt; m_time=""; CTime t(CTime::GetCurrentTime()); CString txt1; txt1=""; //ms = t.GetDay(); // TODO: Add extra validation here stime=t.GetTime(); txt1.Format("%d",stime); AfxMessageBox (txt1); txt=""; if (CheckDataEntry()) OnGeneratorLFSR(); etime=t.GetTime(); CString txt2; txt2=""; txt2.Format("%d",etime); AfxMessageBox (txt2); dtime=etime-stime; txt.Format("%f",dtime); m_time+=txt; // UpdateData(false); //rtime.Format("%s, %s %d, %d.",day,month,dd,yy); //CDialog::OnOK(); } void LFSR_ECDlg::OnCancel() { // TODO: Add extra cleanup here CDialog::OnCancel(); } void LFSR_ECDlg::OnGeneratorLFSR() { // TODO: If this is a RICHEDIT control, the control will not // send this notification unless you override the CDialog::OnInitDialog() // function and call CRichEditCtrl().SetEventMask() // with the ENM_CHANGE flag ORed into the mask. // TODO: Add your control notification handler code here point P0,P1,P2; P0 = mycrv.G; P1 = mycrv.MulPoint(P0,2); int C1=m_C1, C2=m_C2, n=m_Qty, k=0; int q= (mycrv.p-1) / 2; m_p = ""; m_B = ""; CString txt; for(int i=0;i<n;i++) { txt=""; if(P0==mycrv.O) txt.Format("O"); else txt.Format("(%d, %d)",P0.x,P0.y); m_p +=txt; m_p += 13; m_p += 10; if((P0.y >= 0)&&(P0.y <= q)) m_B += "0"; else if(P0 == mycrv.O) m_B += "0"; else m_B += "1"; //m_B += 13;//by ttyu // m_B += 10;//by ttyu P2 = mycrv.AddPoints(mycrv.MulPoint(P1,C2), mycrv.MulPoint(P0,C1)); P0 = P1; P1 = P2; } } BOOL LFSR_ECDlg::OnInitDialog() { CDialog::OnInitDialog(); // TODO: Add extra initialization here //code for dlg bar CString str="LFSR_EC"; m_cap.SetCaption (str); m_cap.Install (this,WM_MYPAINTMESSAGE); ////////////////////////////// return TRUE; // return TRUE unless you set the focus to a control // EXCEPTION: OCX Property Pages should return FALSE } LRESULT LFSR_ECDlg::PaintMyCaption(WPARAM wp, LPARAM lp) { m_cap.PaintCaption(wp,lp); return 0; } BOOL LFSR_ECDlg::OnSetCursor(CWnd* pWnd, UINT nHitTest, UINT message) { // TODO: Add your message handler code here and/or call default return CDialog::OnSetCursor(pWnd, nHitTest, message); } void LFSR_ECDlg::Onsave() { this->UpdateData(); CFile bitstream; char strFilter[] = { "Stream Records (*.mpl)|*.mpl| (*.pis)|*.pis|All Files (*.*)|*.*||" }; CFileDialog FileDlg(FALSE, ".mpl", NULL, 0, strFilter); //insertion//by TTT CFile cf_object; if( FileDlg.DoModal() == IDOK ){ cf_object.Open( FileDlg.GetFileName(), CFile::modeCreate|CFile::modeWrite); //char szText[100]; //strcpy(szText, "File Write Test"); CString txt; txt=""; txt.Format("%s",m_B);//by ANO AfxMessageBox (txt);//by ANO int mB_size=m_B.GetLength(); cf_object.Write (m_B,mB_size); //insertion end /* if( FileDlg.DoModal() == IDOK ) { if( bitstream.Open(FileDlg.GetFileName(), CFile::modeCreate | CFile::modeWrite) == FALSE ) return; CArchive ar(&bitstream, CArchive::store); CString txt; txt=""; txt.Format("%s",m_B);//by ANO AfxMessageBox (txt);//by ANO //txt=m_B;//by ANO ar <<txt;//by ANO ar.Close(); } else return; bitstream.Close(); */ // TODO: Add your control notification handler code here } }

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• What other tool is using my hotkey?

  - by Sammy

  I use Greenshot for screenshots, and it's been nagging about some other software tool using the same hotkey. I started receiving this warning message about two days ago. It shows up each time I reboot and log on to Windows. The hotkey(s) "Ctrl + Shift + PrintScreen" could not be registered. This problem is probably caused by another tool claiming usage of the same hotkey(s)! You could either change your hotkey settings or deactivate/change the software making use of the hotkey(s). What's this all about? The only software I recently installed is CPU-Z Core Temp Speed Fan HD Tune Epson Print CD NetStress What I would like to know is how to find out what other tool is causing this conflict? Do I really have to uninstall each program, one by one, until there is no conflict anymore? I see no option for customizing any hotkeys in CPU-Z, and according to docs there are only a few keyboard shortcuts. These are F5 through F9, but they are no hotkeys. There is nothing in Core Temp, and from what I can see... nothing in Speed Fan. Is any of these programs known to use Ctrl + Shift + PrintScreen hotkey for screenshots? I am actually suspecting the Dropbox client. I think I saw a warning recently coming from Dropbox program, something to do with hotkeys or keyboard shortcuts. I see that it has an option for sharing screenshots under Preferences menu, but I see no option for hotkeys. Core Temp actually also has an option for taking screenshots (F9) but it's just that - a keyboard shortcut, not a hotkey. And again, there's no option actually for changing this setting in Options/Settings menu. How do you resolve this type of conflicts? Are there any general methods you can use to pinpoint the second conflicting software? Like... is there some Windows registry key that holds the hotkeys? Or is it just down to mere luck and trial and error? Addendum I forgot to mention, when I do use the Ctrl + Shift + PrintScreen hotkey, what happens is that the Greenshot context menu shows up, asking me where I want to save the screenshot. So it appears to be working. But I am still getting the darn warning every time I reboot and log on to Windows?! I actually tried changing the key bindings in Greenshot preferences, but after a reboot it seems to have returned back to the settings I had previously. Update I can't see any hotkey conflicts in the Widnows Hotkey Explorer. The aforementioned hotkey is reserved by Greenshot, and I don't see any other program using the same hotkey binding. But when I went into Greenshot preferences, this is what I discovered. As you can see it's the Greenshot itself that uses the same hotkey twice! I guess that's why no other program was listed above as using this hotkey. But how can Greenshot be so stupid to use the same hotkey more than once? I didn't do this! It's not my fault... I'm not that stupid. This is what it's set to right now: Capture full screen: Ctrl + Skift + Prntscrn Capture window: Alt + Prntscrn Capture region: Ctrl + Prntscrn Capture last region: Skift + Prntscrn Capture Internet Explorer: Ctrl + Skift + Prntscrn And this is my preferred setting: Capture full screen: Prntscrn Capture window: Alt + Prntscrn Capture region: Ctrl + Prntscrn Capture last region: Capture Internet Explorer: I don't use any hotkey for "last region" and IE. But when I set this to my liking, as listed here, Greenshot gives me the same warning message, even as I tab through the hotkey entry fields. Sometimes it even gives me the warning when I just click Cancel button. This is really crazy! On the side note... You might have noticed that I have "update check" set to 0 (zero). This is because, in my experience, Greenshot changes all or only some of my preferences back to default settings whenever it automatically updates to a new version. So I opted to stay off updates to get rid of the problem. It has done so for the past three updates or so. I hoped to receive a new update that would fix the issue, but I think it still reverts back to default settings after each update to a new version, including setting default hotkeys. Update 2 I'll give you just one example of how Greenshot behaves. This is the dialog I have in front of me right now. As you can see, I have removed the last two hotkeys and changed the first one to my own liking. While I was clicking in the fields and removing the two hotkeys I was getting the warning message. So let's say I click in the "capture last region" field. Then I get this: Note that none of the entries include "Ctrl + Shift + PrintScreen" that it's warning about. Now I will change all the hotkeys so I get something like this: So now I'm using QWERTY letters for binding, like Ctrl+Alt+Q, Ctrl+Alt+W and so on. As far as I know no Windows program is using these. While I was clicking through the different fields it was giving me the warning. Now when I try to click OK to save the changes, it once again gives me a warning about "ctrl + shift + printscreen". Update 3 After setting the above key bindings (QWERTY) and saving changes, and then rebooting, the conflict seems to have been resolved. I was then able to set following key bindings. Capture full screen: Prntscrn Capture window: Alt + Prntscrn Capture region: Ctrl + Prntscrn I was not prompted with the warning message this time. Perhaps changing key binding required a system reboot? Sounds far fetched but that appears to be the case. I'm still not sure what caused this conflict, but I know for sure that it started after installing aforementioned programs. It might just have to do with Greenshot itself, and not some other program. Like I said, I know from experience that Greenshot likes to mess with users' settings after each update. I wouldn't be surprised if it was actually silently updated, even though I have specified not to check for updates, then it changed the key bindings back to defaults and caused a conflict with the hotkeys that were registered with the operating system previously. I rarely reboot the system, so that could have added to the conflict. Next time if I see this I will run Hotkey Explorer immediately and see if there is another program causing the conflict.

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• Announcing release of ASP.NET MVC 3, IIS Express, SQL CE 4, Web Farm Framework, Orchard, WebMatrix

  - by ScottGu

  I’m excited to announce the release today of several products: ASP.NET MVC 3 NuGet IIS Express 7.5 SQL Server Compact Edition 4 Web Deploy and Web Farm Framework 2.0 Orchard 1.0 WebMatrix 1.0 The above products are all free. They build upon the .NET 4 and VS 2010 release, and add a ton of additional value to ASP.NET (both Web Forms and MVC) and the Microsoft Web Server stack. ASP.NET MVC 3 Today we are shipping the final release of ASP.NET MVC 3.  You can download and install ASP.NET MVC 3 here.  The ASP.NET MVC 3 source code (released under an OSI-compliant open source license) can also optionally be downloaded here. ASP.NET MVC 3 is a significant update that brings with it a bunch of great features.  Some of the improvements include: Razor ASP.NET MVC 3 ships with a new view-engine option called “Razor” (in addition to continuing to support/enhance the existing .aspx view engine).  Razor minimizes the number of characters and keystrokes required when writing a view template, and enables a fast, fluid coding workflow. Unlike most template syntaxes, with Razor you do not need to interrupt your coding to explicitly denote the start and end of server blocks within your HTML. The Razor parser is smart enough to infer this from your code. This enables a compact and expressive syntax which is clean, fast and fun to type.  You can learn more about Razor from some of the blog posts I’ve done about it over the last 6 months Introducing Razor New @model keyword in Razor Layouts with Razor Server-Side Comments with Razor Razor’s @: and <text> syntax Implicit and Explicit code nuggets with Razor Layouts and Sections with Razor Today’s release supports full code intellisense support for Razor (both VB and C#) with Visual Studio 2010 and the free Visual Web Developer 2010 Express. JavaScript Improvements ASP.NET MVC 3 enables richer JavaScript scenarios and takes advantage of emerging HTML5 capabilities. The AJAX and Validation helpers in ASP.NET MVC 3 now use an Unobtrusive JavaScript based approach.  Unobtrusive JavaScript avoids injecting inline JavaScript into HTML, and enables cleaner separation of behavior using the new HTML 5 “data-“ attribute convention (which conveniently works on older browsers as well – including IE6). This keeps your HTML tight and clean, and makes it easier to optionally swap out or customize JS libraries.  ASP.NET MVC 3 now includes built-in support for posting JSON-based parameters from client-side JavaScript to action methods on the server.  This makes it easier to exchange data across the client and server, and build rich JavaScript front-ends.  We think this capability will be particularly useful going forward with scenarios involving client templates and data binding (including the jQuery plugins the ASP.NET team recently contributed to the jQuery project).  Previous releases of ASP.NET MVC included the core jQuery library.  ASP.NET MVC 3 also now ships the jQuery Validate plugin (which our validation helpers use for client-side validation scenarios).  We are also now shipping and including jQuery UI by default as well (which provides a rich set of client-side JavaScript UI widgets for you to use within projects). Improved Validation ASP.NET MVC 3 includes a bunch of validation enhancements that make it even easier to work with data. Client-side validation is now enabled by default with ASP.NET MVC 3 (using an onbtrusive javascript implementation).  Today’s release also includes built-in support for Remote Validation - which enables you to annotate a model class with a validation attribute that causes ASP.NET MVC to perform a remote validation call to a server method when validating input on the client. The validation features introduced within .NET 4’s System.ComponentModel.DataAnnotations namespace are now supported by ASP.NET MVC 3.  This includes support for the new IValidatableObject interface – which enables you to perform model-level validation, and allows you to provide validation error messages specific to the state of the overall model, or between two properties within the model.  ASP.NET MVC 3 also supports the improvements made to the ValidationAttribute class in .NET 4.  ValidationAttribute now supports a new IsValid overload that provides more information about the current validation context, such as what object is being validated.  This enables richer scenarios where you can validate the current value based on another property of the model.  We’ve shipped a built-in [Compare] validation attribute  with ASP.NET MVC 3 that uses this support and makes it easy out of the box to compare and validate two property values. You can use any data access API or technology with ASP.NET MVC.  This past year, though, we’ve worked closely with the .NET data team to ensure that the new EF Code First library works really well for ASP.NET MVC applications.  These two posts of mine cover the latest EF Code First preview and demonstrates how to use it with ASP.NET MVC 3 to enable easy editing of data (with end to end client+server validation support).  The final release of EF Code First will ship in the next few weeks. Today we are also publishing the first preview of a new MvcScaffolding project.  It enables you to easily scaffold ASP.NET MVC 3 Controllers and Views, and works great with EF Code-First (and is pluggable to support other data providers).  You can learn more about it – and install it via NuGet today - from Steve Sanderson’s MvcScaffolding blog post. Output Caching Previous releases of ASP.NET MVC supported output caching content at a URL or action-method level. With ASP.NET MVC V3 we are also enabling support for partial page output caching – which allows you to easily output cache regions or fragments of a response as opposed to the entire thing.  This ends up being super useful in a lot of scenarios, and enables you to dramatically reduce the work your application does on the server.  The new partial page output caching support in ASP.NET MVC 3 enables you to easily re-use cached sub-regions/fragments of a page across multiple URLs on a site.  It supports the ability to cache the content either on the web-server, or optionally cache it within a distributed cache server like Windows Server AppFabric or memcached. I’ll post some tutorials on my blog that show how to take advantage of ASP.NET MVC 3’s new output caching support for partial page scenarios in the future. Better Dependency Injection ASP.NET MVC 3 provides better support for applying Dependency Injection (DI) and integrating with Dependency Injection/IOC containers. With ASP.NET MVC 3 you no longer need to author custom ControllerFactory classes in order to enable DI with Controllers.  You can instead just register a Dependency Injection framework with ASP.NET MVC 3 and it will resolve dependencies not only for Controllers, but also for Views, Action Filters, Model Binders, Value Providers, Validation Providers, and Model Metadata Providers that you use within your application. This makes it much easier to cleanly integrate dependency injection within your projects. Other Goodies ASP.NET MVC 3 includes dozens of other nice improvements that help to both reduce the amount of code you write, and make the code you do write cleaner.  Here are just a few examples: Improved New Project dialog that makes it easy to start new ASP.NET MVC 3 projects from templates. Improved Add->View Scaffolding support that enables the generation of even cleaner view templates. New ViewBag property that uses .NET 4’s dynamic support to make it easy to pass late-bound data from Controllers to Views. Global Filters support that allows specifying cross-cutting filter attributes (like [HandleError]) across all Controllers within an app. New [AllowHtml] attribute that allows for more granular request validation when binding form posted data to models. Sessionless controller support that allows fine grained control over whether SessionState is enabled on a Controller. New ActionResult types like HttpNotFoundResult and RedirectPermanent for common HTTP scenarios. New Html.Raw() helper to indicate that output should not be HTML encoded. New Crypto helpers for salting and hashing passwords. And much, much more… Learn More about ASP.NET MVC 3 We will be posting lots of tutorials and samples on the http://asp.net/mvc site in the weeks ahead.  Below are two good ASP.NET MVC 3 tutorials available on the site today: Build your First ASP.NET MVC 3 Application: VB and C# Building the ASP.NET MVC 3 Music Store We’ll post additional ASP.NET MVC 3 tutorials and videos on the http://asp.net/mvc site in the future. Visit it regularly to find new tutorials as they are published. How to Upgrade Existing Projects ASP.NET MVC 3 is compatible with ASP.NET MVC 2 – which means it should be easy to update existing MVC projects to ASP.NET MVC 3.  The new features in ASP.NET MVC 3 build on top of the foundational work we’ve already done with the MVC 1 and MVC 2 releases – which means that the skills, knowledge, libraries, and books you’ve acquired are all directly applicable with the MVC 3 release.  MVC 3 adds new features and capabilities – it doesn’t obsolete existing ones. You can upgrade existing ASP.NET MVC 2 projects by following the manual upgrade steps in the release notes.  Alternatively, you can use this automated ASP.NET MVC 3 upgrade tool to easily update your  existing projects. Localized Builds Today’s ASP.NET MVC 3 release is available in English.  We will be releasing localized versions of ASP.NET MVC 3 (in 9 languages) in a few days.  I’ll blog pointers to the localized downloads once they are available. NuGet Today we are also shipping NuGet – a free, open source, package manager that makes it easy for you to find, install, and use open source libraries in your projects. It works with all .NET project types (including ASP.NET Web Forms, ASP.NET MVC, WPF, WinForms, Silverlight, and Class Libraries).  You can download and install it here. NuGet enables developers who maintain open source projects (for example, .NET projects like Moq, NHibernate, Ninject, StructureMap, NUnit, Windsor, Raven, Elmah, etc) to package up their libraries and register them with an online gallery/catalog that is searchable.  The client-side NuGet tools – which include full Visual Studio integration – make it trivial for any .NET developer who wants to use one of these libraries to easily find and install it within the project they are working on. NuGet handles dependency management between libraries (for example: library1 depends on library2). It also makes it easy to update (and optionally remove) libraries from your projects later. It supports updating web.config files (if a package needs configuration settings). It also allows packages to add PowerShell scripts to a project (for example: scaffold commands). Importantly, NuGet is transparent and clean – and does not install anything at the system level. Instead it is focused on making it easy to manage libraries you use with your projects. Our goal with NuGet is to make it as simple as possible to integrate open source libraries within .NET projects.  NuGet Gallery This week we also launched a beta version of the http://nuget.org web-site – which allows anyone to easily search and browse an online gallery of open source packages available via NuGet.  The site also now allows developers to optionally submit new packages that they wish to share with others.  You can learn more about how to create and share a package here. There are hundreds of open-source .NET projects already within the NuGet Gallery today.  We hope to have thousands there in the future. IIS Express 7.5 Today we are also shipping IIS Express 7.5.  IIS Express is a free version of IIS 7.5 that is optimized for developer scenarios.  It works for both ASP.NET Web Forms and ASP.NET MVC project types. We think IIS Express combines the ease of use of the ASP.NET Web Server (aka Cassini) currently built-into Visual Studio today with the full power of IIS.  Specifically: It’s lightweight and easy to install (less than 5Mb download and a quick install) It does not require an administrator account to run/debug applications from Visual Studio It enables a full web-server feature set – including SSL, URL Rewrite, and other IIS 7.x modules It supports and enables the same extensibility model and web.config file settings that IIS 7.x support It can be installed side-by-side with the full IIS web server as well as the ASP.NET Development Server (they do not conflict at all) It works on Windows XP and higher operating systems – giving you a full IIS 7.x developer feature-set on all Windows OS platforms IIS Express (like the ASP.NET Development Server) can be quickly launched to run a site from a directory on disk.  It does not require any registration/configuration steps. This makes it really easy to launch and run for development scenarios.  You can also optionally redistribute IIS Express with your own applications if you want a lightweight web-server.  The standard IIS Express EULA now includes redistributable rights. Visual Studio 2010 SP1 adds support for IIS Express.  Read my VS 2010 SP1 and IIS Express blog post to learn more about what it enables.  SQL Server Compact Edition 4 Today we are also shipping SQL Server Compact Edition 4 (aka SQL CE 4).  SQL CE is a free, embedded, database engine that enables easy database storage. No Database Installation Required SQL CE does not require you to run a setup or install a database server in order to use it.  You can simply copy the SQL CE binaries into the \bin directory of your ASP.NET application, and then your web application can use it as a database engine.  No setup or extra security permissions are required for it to run. You do not need to have an administrator account on the machine. Just copy your web application onto any server and it will work. This is true even of medium-trust applications running in a web hosting environment. SQL CE runs in-memory within your ASP.NET application and will start-up when you first access a SQL CE database, and will automatically shutdown when your application is unloaded.  SQL CE databases are stored as files that live within the \App_Data folder of your ASP.NET Applications. Works with Existing Data APIs SQL CE 4 works with existing .NET-based data APIs, and supports a SQL Server compatible query syntax.  This means you can use existing data APIs like ADO.NET, as well as use higher-level ORMs like Entity Framework and NHibernate with SQL CE.  This enables you to use the same data programming skills and data APIs you know today. Supports Development, Testing and Production Scenarios SQL CE can be used for development scenarios, testing scenarios, and light production usage scenarios.  With the SQL CE 4 release we’ve done the engineering work to ensure that SQL CE won’t crash or deadlock when used in a multi-threaded server scenario (like ASP.NET).  This is a big change from previous releases of SQL CE – which were designed for client-only scenarios and which explicitly blocked running in web-server environments.  Starting with SQL CE 4 you can use it in a web-server as well. There are no license restrictions with SQL CE.  It is also totally free. Tooling Support with VS 2010 SP1 Visual Studio 2010 SP1 adds support for SQL CE 4 and ASP.NET Projects.  Read my VS 2010 SP1 and SQL CE 4 blog post to learn more about what it enables.  Web Deploy and Web Farm Framework 2.0 Today we are also releasing Microsoft Web Deploy V2 and Microsoft Web Farm Framework V2.  These services provide a flexible and powerful way to deploy ASP.NET applications onto either a single server, or across a web farm of machines. You can learn more about these capabilities from my previous blog posts on them: Introducing the Microsoft Web Farm Framework Automating Deployment with Microsoft Web Deploy Visit the http://iis.net website to learn more and install them. Both are free. Orchard 1.0 Today we are also releasing Orchard v1.0.  Orchard is a free, open source, community based project.  It provides Content Management System (CMS) and Blogging System support out of the box, and makes it possible to easily create and manage web-sites without having to write code (site owners can customize a site through the browser-based editing tools built-into Orchard).  Read these tutorials to learn more about how you can setup and manage your own Orchard site. Orchard itself is built as an ASP.NET MVC 3 application using Razor view templates (and by default uses SQL CE 4 for data storage).  Developers wishing to extend an Orchard site with custom functionality can open and edit it as a Visual Studio project – and add new ASP.NET MVC Controllers/Views to it.  WebMatrix 1.0 WebMatrix is a new, free, web development tool from Microsoft that provides a suite of technologies that make it easier to enable website development.  It enables a developer to start a new site by browsing and downloading an app template from an online gallery of web applications (which includes popular apps like Umbraco, DotNetNuke, Orchard, WordPress, Drupal and Joomla).  Alternatively it also enables developers to create and code web sites from scratch. WebMatrix is task focused and helps guide developers as they work on sites.  WebMatrix includes IIS Express, SQL CE 4, and ASP.NET - providing an integrated web-server, database and programming framework combination.  It also includes built-in web publishing support which makes it easy to find and deploy sites to web hosting providers. You can learn more about WebMatrix from my Introducing WebMatrix blog post this summer.  Visit http://microsoft.com/web to download and install it today. Summary I’m really excited about today’s releases – they provide a bunch of additional value that makes web development with ASP.NET, Visual Studio and the Microsoft Web Server a lot better.  A lot of folks worked hard to share this with you today. On behalf of my whole team – we hope you enjoy them! Scott P.S. In addition to blogging, I am also now using Twitter for quick updates and to share links. Follow me at: twitter.com/scottgu

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• West Wind WebSurge - an easy way to Load Test Web Applications

  - by Rick Strahl

  A few months ago on a project the subject of load testing came up. We were having some serious issues with a Web application that would start spewing SQL lock errors under somewhat heavy load. These sort of errors can be tough to catch, precisely because they only occur under load and not during typical development testing. To replicate this error more reliably we needed to put a load on the application and run it for a while before these SQL errors would flare up. It’s been a while since I’d looked at load testing tools, so I spent a bit of time looking at different tools and frankly didn’t really find anything that was a good fit. A lot of tools were either a pain to use, didn’t have the basic features I needed, or are extravagantly expensive. In  the end I got frustrated enough to build an initially small custom load test solution that then morphed into a more generic library, then gained a console front end and eventually turned into a full blown Web load testing tool that is now called West Wind WebSurge. I got seriously frustrated looking for tools every time I needed some quick and dirty load testing for an application. If my aim is to just put an application under heavy enough load to find a scalability problem in code, or to simply try and push an application to its limits on the hardware it’s running I shouldn’t have to have to struggle to set up tests. It should be easy enough to get going in a few minutes, so that the testing can be set up quickly so that it can be done on a regular basis without a lot of hassle. And that was the goal when I started to build out my initial custom load tester into a more widely usable tool. If you’re in a hurry and you want to check it out, you can find more information and download links here: West Wind WebSurge Product Page Walk through Video Download link (zip) Install from Chocolatey Source on GitHub For a more detailed discussion of the why’s and how’s and some background continue reading. How did I get here? When I started out on this path, I wasn’t planning on building a tool like this myself – but I got frustrated enough looking at what’s out there to think that I can do better than what’s available for the most common simple load testing scenarios. When we ran into the SQL lock problems I mentioned, I started looking around what’s available for Web load testing solutions that would work for our whole team which consisted of a few developers and a couple of IT guys both of which needed to be able to run the tests. It had been a while since I looked at tools and I figured that by now there should be some good solutions out there, but as it turns out I didn’t really find anything that fit our relatively simple needs without costing an arm and a leg… I spent the better part of a day installing and trying various load testing tools and to be frank most of them were either terrible at what they do, incredibly unfriendly to use, used some terminology I couldn’t even parse, or were extremely expensive (and I mean in the ‘sell your liver’ range of expensive). Pick your poison. There are also a number of online solutions for load testing and they actually looked more promising, but those wouldn’t work well for our scenario as the application is running inside of a private VPN with no outside access into the VPN. Most of those online solutions also ended up being very pricey as well – presumably because of the bandwidth required to test over the open Web can be enormous. When I asked around on Twitter what people were using– I got mostly… crickets. Several people mentioned Visual Studio Load Test, and most other suggestions pointed to online solutions. I did get a bunch of responses though with people asking to let them know what I found – apparently I’m not alone when it comes to finding load testing tools that are effective and easy to use. As to Visual Studio, the higher end skus of Visual Studio and the test edition include a Web load testing tool, which is quite powerful, but there are a number of issues with that: First it’s tied to Visual Studio so it’s not very portable – you need a VS install. I also find the test setup and terminology used by the VS test runner extremely confusing. Heck, it’s complicated enough that there’s even a Pluralsight course on using the Visual Studio Web test from Steve Smith. And of course you need to have one of the high end Visual Studio Skus, and those are mucho Dinero ($$$) – just for the load testing that’s rarely an option. Some of the tools are ultra extensive and let you run analysis tools on the target serves which is useful, but in most cases – just plain overkill and only distracts from what I tend to be ultimately interested in: Reproducing problems that occur at high load, and finding the upper limits and ‘what if’ scenarios as load is ramped up increasingly against a site. Yes it’s useful to have Web app instrumentation, but often that’s not what you’re interested in. I still fondly remember early days of Web testing when Microsoft had the WAST (Web Application Stress Tool) tool, which was rather simple – and also somewhat limited – but easily allowed you to create stress tests very quickly. It had some serious limitations (mainly that it didn’t work with SSL),  but the idea behind it was excellent: Create tests quickly and easily and provide a decent engine to run it locally with minimal setup. You could get set up and run tests within a few minutes. Unfortunately, that tool died a quiet death as so many of Microsoft’s tools that probably were built by an intern and then abandoned, even though there was a lot of potential and it was actually fairly widely used. Eventually the tools was no longer downloadable and now it simply doesn’t work anymore on higher end hardware. West Wind Web Surge – Making Load Testing Quick and Easy So I ended up creating West Wind WebSurge out of rebellious frustration… The goal of WebSurge is to make it drop dead simple to create load tests. It’s super easy to capture sessions either using the built in capture tool (big props to Eric Lawrence, Telerik and FiddlerCore which made that piece a snap), using the full version of Fiddler and exporting sessions, or by manually or programmatically creating text files based on plain HTTP headers to create requests. I’ve been using this tool for 4 months now on a regular basis on various projects as a reality check for performance and scalability and it’s worked extremely well for finding small performance issues. I also use it regularly as a simple URL tester, as it allows me to quickly enter a URL plus headers and content and test that URL and its results along with the ability to easily save one or more of those URLs. A few weeks back I made a walk through video that goes over most of the features of WebSurge in some detail: Note that the UI has slightly changed since then, so there are some UI improvements. Most notably the test results screen has been updated recently to a different layout and to provide more information about each URL in a session at a glance. The video and the main WebSurge site has a lot of info of basic operations. For the rest of this post I’ll talk about a few deeper aspects that may be of interest while also giving a glance at how WebSurge works. Session Capturing As you would expect, WebSurge works with Sessions of Urls that are played back under load. Here’s what the main Session View looks like: You can create session entries manually by individually adding URLs to test (on the Request tab on the right) and saving them, or you can capture output from Web Browsers, Windows Desktop applications that call services, your own applications using the built in Capture tool. With this tool you can capture anything HTTP -SSL requests and content from Web pages, AJAX calls, SOAP or REST services – again anything that uses Windows or .NET HTTP APIs. Behind the scenes the capture tool uses FiddlerCore so basically anything you can capture with Fiddler you can also capture with Web Surge Session capture tool. Alternately you can actually use Fiddler as well, and then export the captured Fiddler trace to a file, which can then be imported into WebSurge. This is a nice way to let somebody capture session without having to actually install WebSurge or for your customers to provide an exact playback scenario for a given set of URLs that cause a problem perhaps. Note that not all applications work with Fiddler’s proxy unless you configure a proxy. For example, .NET Web applications that make HTTP calls usually don’t show up in Fiddler by default. For those .NET applications you can explicitly override proxy settings to capture those requests to service calls. The capture tool also has handy optional filters that allow you to filter by domain, to help block out noise that you typically don’t want to include in your requests. For example, if your pages include links to CDNs, or Google Analytics or social links you typically don’t want to include those in your load test, so by capturing just from a specific domain you are guaranteed content from only that one domain. Additionally you can provide url filters in the configuration file – filters allow to provide filter strings that if contained in a url will cause requests to be ignored. Again this is useful if you don’t filter by domain but you want to filter out things like static image, css and script files etc. Often you’re not interested in the load characteristics of these static and usually cached resources as they just add noise to tests and often skew the overall url performance results. In my testing I tend to care only about my dynamic requests. SSL Captures require Fiddler Note, that in order to capture SSL requests you’ll have to install the Fiddler’s SSL certificate. The easiest way to do this is to install Fiddler and use its SSL configuration options to get the certificate into the local certificate store. There’s a document on the Telerik site that provides the exact steps to get SSL captures to work with Fiddler and therefore with WebSurge. Session Storage A group of URLs entered or captured make up a Session. Sessions can be saved and restored easily as they use a very simple text format that simply stored on disk. The format is slightly customized HTTP header traces separated by a separator line. The headers are standard HTTP headers except that the full URL instead of just the domain relative path is stored as part of the 1st HTTP header line for easier parsing. Because it’s just text and uses the same format that Fiddler uses for exports, it’s super easy to create Sessions by hand manually or under program control writing out to a simple text file. You can see what this format looks like in the Capture window figure above – the raw captured format is also what’s stored to disk and what WebSurge parses from. The only ‘custom’ part of these headers is that 1st line contains the full URL instead of the domain relative path and Host: header. The rest of each header are just plain standard HTTP headers with each individual URL isolated by a separator line. The format used here also uses what Fiddler produces for exports, so it’s easy to exchange or view data either in Fiddler or WebSurge. Urls can also be edited interactively so you can modify the headers easily as well: Again – it’s just plain HTTP headers so anything you can do with HTTP can be added here. Use it for single URL Testing Incidentally I’ve also found this form as an excellent way to test and replay individual URLs for simple non-load testing purposes. Because you can capture a single or many URLs and store them on disk, this also provides a nice HTTP playground where you can record URLs with their headers, and fire them one at a time or as a session and see results immediately. It’s actually an easy way for REST presentations and I find the simple UI flow actually easier than using Fiddler natively. Finally you can save one or more URLs as a session for later retrieval. I’m using this more and more for simple URL checks. Overriding Cookies and Domains Speaking of HTTP headers – you can also overwrite cookies used as part of the options. One thing that happens with modern Web applications is that you have session cookies in use for authorization. These cookies tend to expire at some point which would invalidate a test. Using the Options dialog you can actually override the cookie: which replaces the cookie for all requests with the cookie value specified here. You can capture a valid cookie from a manual HTTP request in your browser and then paste into the cookie field, to replace the existing Cookie with the new one that is now valid. Likewise you can easily replace the domain so if you captured urls on west-wind.com and now you want to test on localhost you can do that easily easily as well. You could even do something like capture on store.west-wind.com and then test on localhost/store which would also work. Running Load Tests Once you’ve created a Session you can specify the length of the test in seconds, and specify the number of simultaneous threads to run each session on. Sessions run through each of the URLs in the session sequentially by default. One option in the options list above is that you can also randomize the URLs so each thread runs requests in a different order. This avoids bunching up URLs initially when tests start as all threads run the same requests simultaneously which can sometimes skew the results of the first few minutes of a test. While sessions run some progress information is displayed: By default there’s a live view of requests displayed in a Console-like window. On the bottom of the window there’s a running total summary that displays where you’re at in the test, how many requests have been processed and what the requests per second count is currently for all requests. Note that for tests that run over a thousand requests a second it’s a good idea to turn off the console display. While the console display is nice to see that something is happening and also gives you slight idea what’s happening with actual requests, once a lot of requests are processed, this UI updating actually adds a lot of CPU overhead to the application which may cause the actual load generated to be reduced. If you are running a 1000 requests a second there’s not much to see anyway as requests roll by way too fast to see individual lines anyway. If you look on the options panel, there is a NoProgressEvents option that disables the console display. Note that the summary display is still updated approximately once a second so you can always tell that the test is still running. Test Results When the test is done you get a simple Results display: On the right you get an overall summary as well as breakdown by each URL in the session. Both success and failures are highlighted so it’s easy to see what’s breaking in your load test. The report can be printed or you can also open the HTML document in your default Web Browser for printing to PDF or saving the HTML document to disk. The list on the right shows you a partial list of the URLs that were fired so you can look in detail at the request and response data. The list can be filtered by success and failure requests. Each list is partial only (at the moment) and limited to a max of 1000 items in order to render reasonably quickly. Each item in the list can be clicked to see the full request and response data: This particularly useful for errors so you can quickly see and copy what request data was used and in the case of a GET request you can also just click the link to quickly jump to the page. For non-GET requests you can find the URL in the Session list, and use the context menu to Test the URL as configured including any HTTP content data to send. You get to see the full HTTP request and response as well as a link in the Request header to go visit the actual page. Not so useful for a POST as above, but definitely useful for GET requests. Finally you can also get a few charts. The most useful one is probably the Request per Second chart which can be accessed from the Charts menu or shortcut. Here’s what it looks like:   Results can also be exported to JSON, XML and HTML. Keep in mind that these files can get very large rather quickly though, so exports can end up taking a while to complete. Command Line Interface WebSurge runs with a small core load engine and this engine is plugged into the front end application I’ve shown so far. There’s also a command line interface available to run WebSurge from the Windows command prompt. Using the command line you can run tests for either an individual URL (similar to AB.exe for example) or a full Session file. By default when it runs WebSurgeCli shows progress every second showing total request count, failures and the requests per second for the entire test. A silent option can turn off this progress display and display only the results. The command line interface can be useful for build integration which allows checking for failures perhaps or hitting a specific requests per second count etc. It’s also nice to use this as quick and dirty URL test facility similar to the way you’d use Apache Bench (ab.exe). Unlike ab.exe though, WebSurgeCli supports SSL and makes it much easier to create multi-URL tests using either manual editing or the WebSurge UI. Current Status Currently West Wind WebSurge is still in Beta status. I’m still adding small new features and tweaking the UI in an attempt to make it as easy and self-explanatory as possible to run. Documentation for the UI and specialty features is also still a work in progress. I plan on open-sourcing this product, but it won’t be free. There’s a free version available that provides a limited number of threads and request URLs to run. A relatively low cost license  removes the thread and request limitations. Pricing info can be found on the Web site – there’s an introductory price which is $99 at the moment which I think is reasonable compared to most other for pay solutions out there that are exorbitant by comparison… The reason code is not available yet is – well, the UI portion of the app is a bit embarrassing in its current monolithic state. The UI started as a very simple interface originally that later got a lot more complex – yeah, that never happens, right? Unless there’s a lot of interest I don’t foresee re-writing the UI entirely (which would be ideal), but in the meantime at least some cleanup is required before I dare to publish it :-). The code will likely be released with version 1.0. I’m very interested in feedback. Do you think this could be useful to you and provide value over other tools you may or may not have used before? I hope so – it already has provided a ton of value for me and the work I do that made the development worthwhile at this point. You can leave a comment below, or for more extensive discussions you can post a message on the West Wind Message Board in the WebSurge section Microsoft MVPs and Insiders get a free License If you’re a Microsoft MVP or a Microsoft Insider you can get a full license for free. Send me a link to your current, official Microsoft profile and I’ll send you a not-for resale license. Send any messages to [email protected]. Resources For more info on WebSurge and to download it to try it out, use the following links. West Wind WebSurge Home Download West Wind WebSurge Getting Started with West Wind WebSurge Video© Rick Strahl, West Wind Technologies, 2005-2014Posted in ASP.NET   Tweet !function(d,s,id){var js,fjs=d.getElementsByTagName(s)[0];if(!d.getElementById(id)){js=d.createElement(s);js.id=id;js.src="//platform.twitter.com/widgets.js";fjs.parentNode.insertBefore(js,fjs);}}(document,"script","twitter-wjs"); (function() { var po = document.createElement('script'); po.type = 'text/javascript'; po.async = true; po.src = 'https://apis.google.com/js/plusone.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(po, s); })();

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• Windows Azure: Backup Services Release, Hyper-V Recovery Manager, VM Enhancements, Enhanced Enterprise Management Support

  - by ScottGu

  This morning we released a huge set of updates to Windows Azure.  These new capabilities include: Backup Services: General Availability of Windows Azure Backup Services Hyper-V Recovery Manager: Public preview of Windows Azure Hyper-V Recovery Manager Virtual Machines: Delete Attached Disks, Availability Set Warnings, SQL AlwaysOn Configuration Active Directory: Securely manage hundreds of SaaS applications Enterprise Management: Use Active Directory to Better Manage Windows Azure Windows Azure SDK 2.2: A massive update of our SDK + Visual Studio tooling support All of these improvements are now available to use immediately.  Below are more details about them. Backup Service: General Availability Release of Windows Azure Backup Today we are releasing Windows Azure Backup Service as a general availability service.  This release is now live in production, backed by an enterprise SLA, supported by Microsoft Support, and is ready to use for production scenarios. Windows Azure Backup is a cloud based backup solution for Windows Server which allows files and folders to be backed up and recovered from the cloud, and provides off-site protection against data loss. The service provides IT administrators and developers with the option to back up and protect critical data in an easily recoverable way from any location with no upfront hardware cost. Windows Azure Backup is built on the Windows Azure platform and uses Windows Azure blob storage for storing customer data. Windows Server uses the downloadable Windows Azure Backup Agent to transfer file and folder data securely and efficiently to the Windows Azure Backup Service. Along with providing cloud backup for Windows Server, Windows Azure Backup Service also provides capability to backup data from System Center Data Protection Manager and Windows Server Essentials, to the cloud. All data is encrypted onsite before it is sent to the cloud, and customers retain and manage the encryption key (meaning the data is stored entirely secured and can’t be decrypted by anyone but yourself). Getting Started To get started with the Windows Azure Backup Service, create a new Backup Vault within the Windows Azure Management Portal.  Click New->Data Services->Recovery Services->Backup Vault to do this: Once the backup vault is created you’ll be presented with a simple tutorial that will help guide you on how to register your Windows Servers with it: Once the servers you want to backup are registered, you can use the appropriate local management interface (such as the Microsoft Management Console snap-in, System Center Data Protection Manager Console, or Windows Server Essentials Dashboard) to configure the scheduled backups and to optionally initiate recoveries. You can follow these tutorials to learn more about how to do this: Tutorial: Schedule Backups Using the Windows Azure Backup Agent This tutorial helps you with setting up a backup schedule for your registered Windows Servers. Additionally, it also explains how to use Windows PowerShell cmdlets to set up a custom backup schedule. Tutorial: Recover Files and Folders Using the Windows Azure Backup Agent This tutorial helps you with recovering data from a backup. Additionally, it also explains how to use Windows PowerShell cmdlets to do the same tasks. Below are some of the key benefits the Windows Azure Backup Service provides: Simple configuration and management. Windows Azure Backup Service integrates with the familiar Windows Server Backup utility in Windows Server, the Data Protection Manager component in System Center and Windows Server Essentials, in order to provide a seamless backup and recovery experience to a local disk, or to the cloud. Block level incremental backups. The Windows Azure Backup Agent performs incremental backups by tracking file and block level changes and only transferring the changed blocks, hence reducing the storage and bandwidth utilization. Different point-in-time versions of the backups use storage efficiently by only storing the changes blocks between these versions. Data compression, encryption and throttling. The Windows Azure Backup Agent ensures that data is compressed and encrypted on the server before being sent to the Windows Azure Backup Service over the network. As a result, the Windows Azure Backup Service only stores encrypted data in the cloud storage. The encryption key is not available to the Windows Azure Backup Service, and as a result the data is never decrypted in the service. Also, users can setup throttling and configure how the Windows Azure Backup service utilizes the network bandwidth when backing up or restoring information. Data integrity is verified in the cloud. In addition to the secure backups, the backed up data is also automatically checked for integrity once the backup is done. As a result, any corruptions which may arise due to data transfer can be easily identified and are fixed automatically. Configurable retention policies for storing data in the cloud. The Windows Azure Backup Service accepts and implements retention policies to recycle backups that exceed the desired retention range, thereby meeting business policies and managing backup costs. Hyper-V Recovery Manager: Now Available in Public Preview I’m excited to also announce the public preview of a new Windows Azure Service – the Windows Azure Hyper-V Recovery Manager (HRM). Windows Azure Hyper-V Recovery Manager helps protect your business critical services by coordinating the replication and recovery of System Center Virtual Machine Manager 2012 SP1 and System Center Virtual Machine Manager 2012 R2 private clouds at a secondary location. With automated protection, asynchronous ongoing replication, and orderly recovery, the Hyper-V Recovery Manager service can help you implement Disaster Recovery and restore important services accurately, consistently, and with minimal downtime. Application data in an Hyper-V Recovery Manager scenarios always travels on your on-premise replication channel. Only metadata (such as names of logical clouds, virtual machines, networks etc.) that is needed for orchestration is sent to Azure. All traffic sent to/from Azure is encrypted. You can begin using Windows Azure Hyper-V Recovery today by clicking New->Data Services->Recovery Services->Hyper-V Recovery Manager within the Windows Azure Management Portal.  You can read more about Windows Azure Hyper-V Recovery Manager in Brad Anderson’s 9-part series, Transform the datacenter. To learn more about setting up Hyper-V Recovery Manager follow our detailed step-by-step guide. Virtual Machines: Delete Attached Disks, Availability Set Warnings, SQL AlwaysOn Today’s Windows Azure release includes a number of nice updates to Windows Azure Virtual Machines.  These improvements include: Ability to Delete both VM Instances + Attached Disks in One Operation Prior to today’s release, when you deleted VMs within Windows Azure we would delete the VM instance – but not delete the drives attached to the VM.  You had to manually delete these yourself from the storage account.  With today’s update we’ve added a convenience option that now allows you to either retain or delete the attached disks when you delete the VM:   We’ve also added the ability to delete a cloud service, its deployments, and its role instances with a single action. This can either be a cloud service that has production and staging deployments with web and worker roles, or a cloud service that contains virtual machines.  To do this, simply select the Cloud Service within the Windows Azure Management Portal and click the “Delete” button: Warnings on Availability Sets with Only One Virtual Machine In Them One of the nice features that Windows Azure Virtual Machines supports is the concept of “Availability Sets”.  An “availability set” allows you to define a tier/role (e.g. webfrontends, databaseservers, etc) that you can map Virtual Machines into – and when you do this Windows Azure separates them across fault domains and ensures that at least one of them is always available during servicing operations.  This enables you to deploy applications in a high availability way. One issue we’ve seen some customers run into is where they define an availability set, but then forget to map more than one VM into it (which defeats the purpose of having an availability set).  With today’s release we now display a warning in the Windows Azure Management Portal if you have only one virtual machine deployed in an availability set to help highlight this: You can learn more about configuring the availability of your virtual machines here. Configuring SQL Server Always On SQL Server Always On is a great feature that you can use with Windows Azure to enable high availability and DR scenarios with SQL Server. Today’s Windows Azure release makes it even easier to configure SQL Server Always On by enabling “Direct Server Return” endpoints to be configured and managed within the Windows Azure Management Portal.  Previously, setting this up required using PowerShell to complete the endpoint configuration.  Starting today you can enable this simply by checking the “Direct Server Return” checkbox: You can learn more about how to use direct server return for SQL Server AlwaysOn availability groups here. Active Directory: Application Access Enhancements This summer we released our initial preview of our Application Access Enhancements for Windows Azure Active Directory.  This service enables you to securely implement single-sign-on (SSO) support against SaaS applications (including Office 365, SalesForce, Workday, Box, Google Apps, GitHub, etc) as well as LOB based applications (including ones built with the new Windows Azure AD support we shipped last week with ASP.NET and VS 2013). Since the initial preview we’ve enhanced our SAML federation capabilities, integrated our new password vaulting system, and shipped multi-factor authentication support. We've also turned on our outbound identity provisioning system and have it working with hundreds of additional SaaS Applications: Earlier this month we published an update on dates and pricing for when the service will be released in general availability form.  In this blog post we announced our intention to release the service in general availability form by the end of the year.  We also announced that the below features would be available in a free tier with it: SSO to every SaaS app we integrate with – Users can Single Sign On to any app we are integrated with at no charge. This includes all the top SAAS Apps and every app in our application gallery whether they use federation or password vaulting. Application access assignment and removal – IT Admins can assign access privileges to web applications to the users in their active directory assuring that every employee has access to the SAAS Apps they need. And when a user leaves the company or changes jobs, the admin can just as easily remove their access privileges assuring data security and minimizing IP loss User provisioning (and de-provisioning) – IT admins will be able to automatically provision users in 3rd party SaaS applications like Box, Salesforce.com, GoToMeeting, DropBox and others. We are working with key partners in the ecosystem to establish these connections, meaning you no longer have to continually update user records in multiple systems. Security and auditing reports – Security is a key priority for us. With the free version of these enhancements you'll get access to our standard set of access reports giving you visibility into which users are using which applications, when they were using them and where they are using them from. In addition, we'll alert you to un-usual usage patterns for instance when a user logs in from multiple locations at the same time. Our Application Access Panel – Users are logging in from every type of devices including Windows, iOS, & Android. Not all of these devices handle authentication in the same manner but the user doesn't care. They need to access their apps from the devices they love. Our Application Access Panel will support the ability for users to access access and launch their apps from any device and anywhere. You can learn more about our plans for application management with Windows Azure Active Directory here.  Try out the preview and start using it today. Enterprise Management: Use Active Directory to Better Manage Windows Azure Windows Azure Active Directory provides the ability to manage your organization in a directory which is hosted entirely in the cloud, or alternatively kept in sync with an on-premises Windows Server Active Directory solution (allowing you to seamlessly integrate with the directory you already have).  With today’s Windows Azure release we are integrating Windows Azure Active Directory even more within the core Windows Azure management experience, and enabling an even richer enterprise security offering.  Specifically: 1) All Windows Azure accounts now have a default Windows Azure Active Directory created for them.  You can create and map any users you want into this directory, and grant administrative rights to manage resources in Windows Azure to these users. 2) You can keep this directory entirely hosted in the cloud – or optionally sync it with your on-premises Windows Server Active Directory.  Both options are free.  The later approach is ideal for companies that wish to use their corporate user identities to sign-in and manage Windows Azure resources.  It also ensures that if an employee leaves an organization, his or her access control rights to the company’s Windows Azure resources are immediately revoked. 3) The Windows Azure Service Management APIs have been updated to support using Windows Azure Active Directory credentials to sign-in and perform management operations.  Prior to today’s release customers had to download and use management certificates (which were not scoped to individual users) to perform management operations.  We still support this management certificate approach (don’t worry – nothing will stop working).  But we think the new Windows Azure Active Directory authentication support enables an even easier and more secure way for customers to manage resources going forward.  4) The Windows Azure SDK 2.2 release (which is also shipping today) includes built-in support for the new Service Management APIs that authenticate with Windows Azure Active Directory, and now allow you to create and manage Windows Azure applications and resources directly within Visual Studio using your Active Directory credentials.  This, combined with updated PowerShell scripts that also support Active Directory, enables an end-to-end enterprise authentication story with Windows Azure. Below are some details on how all of this works: Subscriptions within a Directory As part of today’s update, we have associated all existing Window Azure accounts with a Windows Azure Active Directory (and created one for you if you don’t already have one). When you login to the Windows Azure Management Portal you’ll now see the directory name in the URI of the browser.  For example, in the screen-shot below you can see that I have a “scottgu” directory that my subscriptions are hosted within: Note that you can continue to use Microsoft Accounts (formerly known as Microsoft Live IDs) to sign-into Windows Azure.  These map just fine to a Windows Azure Active Directory – so there is no need to create new usernames that are specific to a directory if you don’t want to.  In the scenario above I’m actually logged in using my @hotmail.com based Microsoft ID which is now mapped to a “scottgu” active directory that was created for me.  By default everything will continue to work just like you used to before. Manage your Directory You can manage an Active Directory (including the one we now create for you by default) by clicking the “Active Directory” tab in the left-hand side of the portal.  This will list all of the directories in your account.  Clicking one the first time will display a getting started page that provides documentation and links to perform common tasks with it: You can use the built-in directory management support within the Windows Azure Management Portal to add/remove/manage users within the directory, enable multi-factor authentication, associate a custom domain (e.g. mycompanyname.com) with the directory, and/or rename the directory to whatever friendly name you want (just click the configure tab to do this).  You can also setup the directory to automatically sync with an on-premises Active Directory using the “Directory Integration” tab. Note that users within a directory by default do not have admin rights to login or manage Windows Azure based resources.  You still need to explicitly grant them co-admin permissions on a subscription for them to login or manage resources in Windows Azure.  You can do this by clicking the Settings tab on the left-hand side of the portal and then by clicking the administrators tab within it. Sign-In Integration within Visual Studio If you install the new Windows Azure SDK 2.2 release, you can now connect to Windows Azure from directly inside Visual Studio without having to download any management certificates.  You can now just right-click on the “Windows Azure” icon within the Server Explorer and choose the “Connect to Windows Azure” context menu option to do so: Doing this will prompt you to enter the email address of the username you wish to sign-in with (make sure this account is a user in your directory with co-admin rights on a subscription): You can use either a Microsoft Account (e.g. Windows Live ID) or an Active Directory based Organizational account as the email.  The dialog will update with an appropriate login prompt depending on which type of email address you enter: Once you sign-in you’ll see the Windows Azure resources that you have permissions to manage show up automatically within the Visual Studio server explorer and be available to start using: No downloading of management certificates required.  All of the authentication was handled using your Windows Azure Active Directory! Manage Subscriptions across Multiple Directories If you have already have multiple directories and multiple subscriptions within your Windows Azure account, we have done our best to create a good default mapping of your subscriptions->directories as part of today’s update.  If you don’t like the default subscription-to-directory mapping we have done you can click the Settings tab in the left-hand navigation of the Windows Azure Management Portal and browse to the Subscriptions tab within it: If you want to map a subscription under a different directory in your account, simply select the subscription from the list, and then click the “Edit Directory” button to choose which directory to map it to.  Mapping a subscription to a different directory takes only seconds and will not cause any of the resources within the subscription to recycle or stop working.  We’ve made the directory->subscription mapping process self-service so that you always have complete control and can map things however you want. Filtering By Directory and Subscription Within the Windows Azure Management Portal you can filter resources in the portal by subscription (allowing you to show/hide different subscriptions).  If you have subscriptions mapped to multiple directory tenants, we also now have a filter drop-down that allows you to filter the subscription list by directory tenant.  This filter is only available if you have multiple subscriptions mapped to multiple directories within your Windows Azure Account:   Windows Azure SDK 2.2 Today we are also releasing a major update of our Windows Azure SDK.  The Windows Azure SDK 2.2 release adds some great new features including: Visual Studio 2013 Support Integrated Windows Azure Sign-In support within Visual Studio Remote Debugging Cloud Services with Visual Studio Firewall Management support within Visual Studio for SQL Databases Visual Studio 2013 RTM VM Images for MSDN Subscribers Windows Azure Management Libraries for .NET Updated Windows Azure PowerShell Cmdlets and ScriptCenter I’ll post a follow-up blog shortly with more details about all of the above. Additional Updates In addition to the above enhancements, today’s release also includes a number of additional improvements: AutoScale: Richer time and date based scheduling support (set different rules on different dates) AutoScale: Ability to Scale to Zero Virtual Machines (very useful for Dev/Test scenarios) AutoScale: Support for time-based scheduling of Mobile Service AutoScale rules Operation Logs: Auditing support for Service Bus management operations Today we also shipped a major update to the Windows Azure SDK – Windows Azure SDK 2.2.  It has so much goodness in it that I have a whole second blog post coming shortly on it! :-) Summary Today’s Windows Azure release enables a bunch of great new scenarios, and enables a much richer enterprise authentication offering. If you don’t already have a Windows Azure account, you can sign-up for a free trial and start using all of the above features today.  Then visit the Windows Azure Developer Center to learn more about how to build apps with it. Hope this helps, Scott P.S. In addition to blogging, I am also now using Twitter for quick updates and to share links. Follow me at: twitter.com/scottgu

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• Security Issues with Single Page Apps

  - by Stephen.Walther

  Last week, I was asked to do a code review of a Single Page App built using the ASP.NET Web API, Durandal, and Knockout (good stuff!). In particular, I was asked to investigate whether there any special security issues associated with building a Single Page App which are not present in the case of a traditional server-side ASP.NET application. In this blog entry, I discuss two areas in which you need to exercise extra caution when building a Single Page App. I discuss how Single Page Apps are extra vulnerable to both Cross-Site Scripting (XSS) attacks and Cross-Site Request Forgery (CSRF) attacks. This goal of this blog post is NOT to persuade you to avoid writing Single Page Apps. I’m a big fan of Single Page Apps. Instead, the goal is to ensure that you are fully aware of some of the security issues related to Single Page Apps and ensure that you know how to guard against them. Cross-Site Scripting (XSS) Attacks According to WhiteHat Security, over 65% of public websites are open to XSS attacks. That’s bad. By taking advantage of XSS holes in a website, a hacker can steal your credit cards, passwords, or bank account information. Any website that redisplays untrusted information is open to XSS attacks. Let me give you a simple example. Imagine that you want to display the name of the current user on a page. To do this, you create the following server-side ASP.NET page located at http://MajorBank.com/SomePage.aspx: <%@Page Language="C#" %> <html> <head> <title>Some Page</title> </head> <body> Welcome <%= Request["username"] %> </body> </html> Nothing fancy here. Notice that the page displays the current username by using Request[“username”]. Using Request[“username”] displays the username regardless of whether the username is present in a cookie, a form field, or a query string variable. Unfortunately, by using Request[“username”] to redisplay untrusted information, you have now opened your website to XSS attacks. Here’s how. Imagine that an evil hacker creates the following link on another website (hackers.com): <a href="/SomePage.aspx?username=<script src=Evil.js></script>">Visit MajorBank</a> Notice that the link includes a query string variable named username and the value of the username variable is an HTML <SCRIPT> tag which points to a JavaScript file named Evil.js. When anyone clicks on the link, the <SCRIPT> tag will be injected into SomePage.aspx and the Evil.js script will be loaded and executed. What can a hacker do in the Evil.js script? Anything the hacker wants. For example, the hacker could display a popup dialog on the MajorBank.com site which asks the user to enter their password. The script could then post the password back to hackers.com and now the evil hacker has your secret password. ASP.NET Web Forms and ASP.NET MVC have two automatic safeguards against this type of attack: Request Validation and Automatic HTML Encoding. Protecting Coming In (Request Validation) In a server-side ASP.NET app, you are protected against the XSS attack described above by a feature named Request Validation. If you attempt to submit “potentially dangerous” content — such as a JavaScript <SCRIPT> tag — in a form field or query string variable then you get an exception. Unfortunately, Request Validation only applies to server-side apps. Request Validation does not help in the case of a Single Page App. In particular, the ASP.NET Web API does not pay attention to Request Validation. You can post any content you want – including <SCRIPT> tags – to an ASP.NET Web API action. For example, the following HTML page contains a form. When you submit the form, the form data is submitted to an ASP.NET Web API controller on the server using an Ajax request: <!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title></title> </head> <body> <form data-bind="submit:submit"> <div> <label> User Name: <input data-bind="value:user.userName" /> </label> </div> <div> <label> Email: <input data-bind="value:user.email" /> </label> </div> <div> <input type="submit" value="Submit" /> </div> </form> <script src="Scripts/jquery-1.7.1.js"></script> <script src="Scripts/knockout-2.1.0.js"></script> <script> var viewModel = { user: { userName: ko.observable(), email: ko.observable() }, submit: function () { $.post("/api/users", ko.toJS(this.user)); } }; ko.applyBindings(viewModel); </script> </body> </html> The form above is using Knockout to bind the form fields to a view model. When you submit the form, the view model is submitted to an ASP.NET Web API action on the server. Here’s the server-side ASP.NET Web API controller and model class: public class UsersController : ApiController { public HttpResponseMessage Post(UserViewModel user) { var userName = user.UserName; return Request.CreateResponse(HttpStatusCode.OK); } } public class UserViewModel { public string UserName { get; set; } public string Email { get; set; } } If you submit the HTML form, you don’t get an error. The “potentially dangerous” content is passed to the server without any exception being thrown. In the screenshot below, you can see that I was able to post a username form field with the value “<script>alert(‘boo’)</script”. So what this means is that you do not get automatic Request Validation in the case of a Single Page App. You need to be extra careful in a Single Page App about ensuring that you do not display untrusted content because you don’t have the Request Validation safety net which you have in a traditional server-side ASP.NET app. Protecting Going Out (Automatic HTML Encoding) Server-side ASP.NET also protects you from XSS attacks when you render content. By default, all content rendered by the razor view engine is HTML encoded. For example, the following razor view displays the text “<b>Hello!</b>” instead of the text “Hello!” in bold: @{ var message = "<b>Hello!</b>"; } @message   If you don’t want to render content as HTML encoded in razor then you need to take the extra step of using the @Html.Raw() helper. In a Web Form page, if you use <%: %> instead of <%= %> then you get automatic HTML Encoding: <%@ Page Language="C#" %> <% var message = "<b>Hello!</b>"; %> <%: message %> This automatic HTML Encoding will prevent many types of XSS attacks. It prevents <script> tags from being rendered and only allows &lt;script&gt; tags to be rendered which are useless for executing JavaScript. (This automatic HTML encoding does not protect you from all forms of XSS attacks. For example, you can assign the value “javascript:alert(‘evil’)” to the Hyperlink control’s NavigateUrl property and execute the JavaScript). The situation with Knockout is more complicated. If you use the Knockout TEXT binding then you get HTML encoded content. On the other hand, if you use the HTML binding then you do not: <!-- This JavaScript DOES NOT execute --> <div data-bind="text:someProp"></div> <!-- This Javacript DOES execute --> <div data-bind="html:someProp"></div> <script src="Scripts/jquery-1.7.1.js"></script> <script src="Scripts/knockout-2.1.0.js"></script> <script> var viewModel = { someProp : "<script>alert('Evil!')<" + "/script>" }; ko.applyBindings(viewModel); </script>   So, in the page above, the DIV element which uses the TEXT binding is safe from XSS attacks. According to the Knockout documentation: “Since this binding sets your text value using a text node, it’s safe to set any string value without risking HTML or script injection.” Just like server-side HTML encoding, Knockout does not protect you from all types of XSS attacks. For example, there is nothing in Knockout which prevents you from binding JavaScript to a hyperlink like this: <a data-bind="attr:{href:homePageUrl}">Go</a> <script src="Scripts/jquery-1.7.1.min.js"></script> <script src="Scripts/knockout-2.1.0.js"></script> <script> var viewModel = { homePageUrl: "javascript:alert('evil!')" }; ko.applyBindings(viewModel); </script> In the page above, the value “javascript:alert(‘evil’)” is bound to the HREF attribute using Knockout. When you click the link, the JavaScript executes. Cross-Site Request Forgery (CSRF) Attacks Cross-Site Request Forgery (CSRF) attacks rely on the fact that a session cookie does not expire until you close your browser. In particular, if you visit and login to MajorBank.com and then you navigate to Hackers.com then you will still be authenticated against MajorBank.com even after you navigate to Hackers.com. Because MajorBank.com cannot tell whether a request is coming from MajorBank.com or Hackers.com, Hackers.com can submit requests to MajorBank.com pretending to be you. For example, Hackers.com can post an HTML form from Hackers.com to MajorBank.com and change your email address at MajorBank.com. Hackers.com can post a form to MajorBank.com using your authentication cookie. After your email address has been changed, by using a password reset page at MajorBank.com, a hacker can access your bank account. To prevent CSRF attacks, you need some mechanism for detecting whether a request is coming from a page loaded from your website or whether the request is coming from some other website. The recommended way of preventing Cross-Site Request Forgery attacks is to use the “Synchronizer Token Pattern” as described here: https://www.owasp.org/index.php/Cross-Site_Request_Forgery_%28CSRF%29_Prevention_Cheat_Sheet When using the Synchronizer Token Pattern, you include a hidden input field which contains a random token whenever you display an HTML form. When the user opens the form, you add a cookie to the user’s browser with the same random token. When the user posts the form, you verify that the hidden form token and the cookie token match. Preventing Cross-Site Request Forgery Attacks with ASP.NET MVC ASP.NET gives you a helper and an action filter which you can use to thwart Cross-Site Request Forgery attacks. For example, the following razor form for creating a product shows how you use the @Html.AntiForgeryToken() helper: @model MvcApplication2.Models.Product <h2>Create Product</h2> @using (Html.BeginForm()) { @Html.AntiForgeryToken(); <div> @Html.LabelFor( p => p.Name, "Product Name:") @Html.TextBoxFor( p => p.Name) </div> <div> @Html.LabelFor( p => p.Price, "Product Price:") @Html.TextBoxFor( p => p.Price) </div> <input type="submit" /> } The @Html.AntiForgeryToken() helper generates a random token and assigns a serialized version of the same random token to both a cookie and a hidden form field. (Actually, if you dive into the source code, the AntiForgeryToken() does something a little more complex because it takes advantage of a user’s identity when generating the token). Here’s what the hidden form field looks like: <input name=”__RequestVerificationToken” type=”hidden” value=”NqqZGAmlDHh6fPTNR_mti3nYGUDgpIkCiJHnEEL59S7FNToyyeSo7v4AfzF2i67Cv0qTB1TgmZcqiVtgdkW2NnXgEcBc-iBts0x6WAIShtM1″ /> And here’s what the cookie looks like using the Google Chrome developer toolbar: You use the [ValidateAntiForgeryToken] action filter on the controller action which is the recipient of the form post to validate that the token in the hidden form field matches the token in the cookie. If the tokens don’t match then validation fails and you can’t post the form: public ActionResult Create() { return View(); } [ValidateAntiForgeryToken] [HttpPost] public ActionResult Create(Product productToCreate) { if (ModelState.IsValid) { // save product to db return RedirectToAction("Index"); } return View(); } How does this all work? Let’s imagine that a hacker has copied the Create Product page from MajorBank.com to Hackers.com – the hacker grabs the HTML source and places it at Hackers.com. Now, imagine that the hacker trick you into submitting the Create Product form from Hackers.com to MajorBank.com. You’ll get the following exception: The Cross-Site Request Forgery attack is blocked because the anti-forgery token included in the Create Product form at Hackers.com won’t match the anti-forgery token stored in the cookie in your browser. The tokens were generated at different times for different users so the attack fails. Preventing Cross-Site Request Forgery Attacks with a Single Page App In a Single Page App, you can’t prevent Cross-Site Request Forgery attacks using the same method as a server-side ASP.NET MVC app. In a Single Page App, HTML forms are not generated on the server. Instead, in a Single Page App, forms are loaded dynamically in the browser. Phil Haack has a blog post on this topic where he discusses passing the anti-forgery token in an Ajax header instead of a hidden form field. He also describes how you can create a custom anti-forgery token attribute to compare the token in the Ajax header and the token in the cookie. See: http://haacked.com/archive/2011/10/10/preventing-csrf-with-ajax.aspx Also, take a look at Johan’s update to Phil Haack’s original post: http://johan.driessen.se/posts/Updated-Anti-XSRF-Validation-for-ASP.NET-MVC-4-RC (Other server frameworks such as Rails and Django do something similar. For example, Rails uses an X-CSRF-Token to prevent CSRF attacks which you generate on the server – see http://excid3.com/blog/rails-tip-2-include-csrf-token-with-every-ajax-request/#.UTFtgDDkvL8 ). For example, if you are creating a Durandal app, then you can use the following razor view for your one and only server-side page: @{ Layout = null; } <!DOCTYPE html> <html> <head> <title>Index</title> </head> <body> @Html.AntiForgeryToken() <div id="applicationHost"> Loading app.... </div> @Scripts.Render("~/scripts/vendor") <script type="text/javascript" src="~/App/durandal/amd/require.js" data-main="/App/main"></script> </body> </html> Notice that this page includes a call to @Html.AntiForgeryToken() to generate the anti-forgery token. Then, whenever you make an Ajax request in the Durandal app, you can retrieve the anti-forgery token from the razor view and pass the token as a header: var csrfToken = $("input[name='__RequestVerificationToken']").val(); $.ajax({ headers: { __RequestVerificationToken: csrfToken }, type: "POST", dataType: "json", contentType: 'application/json; charset=utf-8', url: "/api/products", data: JSON.stringify({ name: "Milk", price: 2.33 }), statusCode: { 200: function () { alert("Success!"); } } }); Use the following code to create an action filter which you can use to match the header and cookie tokens: using System.Linq; using System.Net.Http; using System.Web.Helpers; using System.Web.Http.Controllers; namespace MvcApplication2.Infrastructure { public class ValidateAjaxAntiForgeryToken : System.Web.Http.AuthorizeAttribute { protected override bool IsAuthorized(HttpActionContext actionContext) { var headerToken = actionContext .Request .Headers .GetValues("__RequestVerificationToken") .FirstOrDefault(); ; var cookieToken = actionContext .Request .Headers .GetCookies() .Select(c => c[AntiForgeryConfig.CookieName]) .FirstOrDefault(); // check for missing cookie or header if (cookieToken == null || headerToken == null) { return false; } // ensure that the cookie matches the header try { AntiForgery.Validate(cookieToken.Value, headerToken); } catch { return false; } return base.IsAuthorized(actionContext); } } } Notice that the action filter derives from the base AuthorizeAttribute. The ValidateAjaxAntiForgeryToken only works when the user is authenticated and it will not work for anonymous requests. Add the action filter to your ASP.NET Web API controller actions like this: [ValidateAjaxAntiForgeryToken] public HttpResponseMessage PostProduct(Product productToCreate) { // add product to db return Request.CreateResponse(HttpStatusCode.OK); } After you complete these steps, it won’t be possible for a hacker to pretend to be you at Hackers.com and submit a form to MajorBank.com. The header token used in the Ajax request won’t travel to Hackers.com. This approach works, but I am not entirely happy with it. The one thing that I don’t like about this approach is that it creates a hard dependency on using razor. Your single page in your Single Page App must be generated from a server-side razor view. A better solution would be to generate the anti-forgery token in JavaScript. Unfortunately, until all browsers support a way to generate cryptographically strong random numbers – for example, by supporting the window.crypto.getRandomValues() method — there is no good way to generate anti-forgery tokens in JavaScript. So, at least right now, the best solution for generating the tokens is the server-side solution with the (regrettable) dependency on razor. Conclusion The goal of this blog entry was to explore some ways in which you need to handle security differently in the case of a Single Page App than in the case of a traditional server app. In particular, I focused on how to prevent Cross-Site Scripting and Cross-Site Request Forgery attacks in the case of a Single Page App. I want to emphasize that I am not suggesting that Single Page Apps are inherently less secure than server-side apps. Whatever type of web application you build – regardless of whether it is a Single Page App, an ASP.NET MVC app, an ASP.NET Web Forms app, or a Rails app – you must constantly guard against security vulnerabilities.

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• How to automatically remove Flash history/privacy trail? Or stop Flash from storing it?

  - by Arjan van Bentem

  Many people have heard about third-party cookies, and some browsers even block those by default. Some people may even be using Private Browsing modes. However, only few seem to realise that Adobe's Flash player also leaves a cross-browser trail on your local hard drive, and allows for sending cookie-like information back to the server, including third-party sites. And because it is a plugin, Flash does not take any of the browser's privacy settings into account. Sorry for the long post, but first some details about why using Flash raises a privacy concern, followed by the results of my tests: The Flash player keeps a cross-browser history of the domain names of the Flash-sites your computer has visited. Unlike your browser's history, this history is not limited to a certain number of days. History is also recorded while using so-called Private Browsing modes. It is stored on your hard drive (though, as described below, without going to Adobe's site you won't know what is stored). I am not sure if any date and time information is kept about each visit, but to see the domain names: right-click on some Flash content, open the settings dialog, and click the Help icon or click the Advanced button within the Privacy tab. This opens a browser to the help pages on Adobe.com, where one can click through to the Website Storage Settings panel. One can clear the existing list, but one cannot stop it from being recorded again. Flash allows for storing data on your local hard drive, using so-called Local Shared Objects (aka "Flash Cookies"). Just like HTTP cookies, this data can be sent back to the server, for tracking purposes. They are cross-browser, have no expiration date, and no user defined maximum lifetime can be set in the Flash preferences either. These not being HTTP cookies, they are (of course) not blocked by a browser's cookies preferences and are not removed when the normal HTTP cookies are deleted. Adobe has announced that version 10.1 will obey Private Browsing in most popular browsers, but unfortunately no word about also removing the data whenever normal cookies are deleted manually. And its implementation might be confusing: [..] if the browser is in normal browsing mode when the Flash Player instance is created, then that particular instance will forever be in normal browsing mode (private browsing is turned off). Accordingly, toggling private browsing on or off without refreshing the page or closing the private browsing window will not impact Flash Player. Local Shared Objects are not limited to the site you visit, and third-party storage is enabled by default. At the Global Storage Settings panel one can deselect the default Allow third-party Flash content to store data on your computer. Because of the cross-browser and expiration-less nature (and the fact that few people know about it), I feel that the cross-browser third-party Flash Cookies are more dangerous for visitor tracking than third-party normal HTTP cookies. They are even used to restore plain HTTP cookies that the user tried to delete: "All advertisers, websites and networks use cookies for targeted advertising, but cookies are under attack. According to current research they are being erased by 40% of users creating serious problems," says Mookie Tenembaum, founder of United Virtualities. "From simple frequency capping to the more sophisticated behavioral targeting, cookies are an essential part of any online ad campaign. PIE ["Persistent Identification Element"] will give publishers and third-party providers a persistent backup to cookies effectively rendering them unassailable", adds Tenembaum. [..] To justify this tracking mechanism, UV's Tenembaum said, "The user is not proficient enough in technology to know if the cookie is good or bad, or how it works." When selecting None (zero KB) for Specify the amount of disk space that website websites that you haven't yet visited can use to store information on your computer, and checking Never ask again then some sites do not work. However, the same site might work when setting it to None but without selecting Never ask again, and then choose Deny whenever prompted. Both options would result in zero KB of data being allowed, but the behaviour differs. The plugin also provides a Flash Player cache for Adobe-signed files. I guess these files are not an issue. So: how to automatically delete that information? On a Mac, one can find a settings.sol file and a folder for each visited Flash-website in: $HOME/Library/Preferences/Macromedia/Flash Player/macromedia.com/support/flashplayer/sys/ Deleting the settings.sol file and all the folders in sys, removes the trail from the settings panels. However, the actual Local Shared Ojects are elsewhere (see Wikipedia for locations on other operating systems), in a randomly named subfolder of: $HOME/Library/Preferences/Macromedia/Flash Player/#SharedObjects But then: how to remove this automatically? Simply removing the folders and the settings.sol file every now and then (like by using launchd or Windows' Task Scheduler) may interfere with active browsers. Or is it safe to assume that, given the cross-browser nature, the plugin would not care if things are removed while it is active? Only clearing during log-off may not work for those who hibernate all the time. Firefox users can install BetterPrivacy or Objection to delete the Local Shared Objects (for all others browsers as well). I don't know if that also deletes the trail of website domain names. Or: how to stop Flash from storing a history trail? Change of plans: I'm currently testing prohibiting Flash to write to its own sys and #SharedObjects folders. So far, Flash has not tried to restore permissions (though, when deleting the folders, Flash will of course recreate them). I've not encountered any problems but this may take some while to validate, using multiple browsers and sites. I've not yet found a log that reports errors. On a Mac: cd "$HOME/Library/Preferences/Macromedia/Flash Player/macromedia.com/support/flashplayer" rm -r sys/* chmod u-w sys cd "$HOME/Library/Preferences/Macromedia/Flash Player" # preserve the randomly named subfolders (only preserving the latest would suffice; see below) rm -r \#SharedObjects/*/* chmod -R u-w \#SharedObjects I guess the above chmods cannot be achieved on an old Windows system (I'm not sure about XP and Vista?). Though maybe on Windows one could replace the folders sys and #SharedObjects with dummy files with the same names? Anyone? Obviously, keeping Flash from storing those Local Shared Objects for all sites may cause problems. Some test results (Flash 10 on Mac OS X): When blocking the sys folder (even when leaving the #SharedObjects folder writable) then YouTube won't remember your volume settings while viewing multiple videos. Temporarily allowing write access to the blocked folders while visiting trusted sites (to only create folders for domains you like, maybe including references in settings.sol) solves that. This way, for YouTube, Flash could be allowed to write to sys/#s.ytimg.com and #SharedObjects/s.ytimg.com, while Flash could not create new folders for other domains. One may also need to make settings.sol read-only afterwards, or delete it again. When blocking both the sys and #SharedObjects folders, YouTube and Vimeo work fine (though they might not remember any settings). However, Bits on the Run refuses to even show the video player. This is solved by temporarily unblocking the #SharedObjects folder, to allow Flash to create a subfolder with some random name. Within this folder, it would create yet another folder for the current Flash website (content.bitsontherun.com). Removing that website-specific folder, and blocking both #SharedObjects and the randomly named subfolder, still seems to allow Bits on the Run to operate, even though it still cannot write anything to disk. So: the existence of the randomly named subfolder (even when write protected) is important for some sites. When I first found the #SharedObjects folder, it held many subfolders with random names, some created on the very same day. I wonder when Flash decides it wants a new folder, and how it determines (and remembers) that random name. For a moment I considered not blocking write access for sys and #SharedObjects, but explicitly creating read-only folders for well-known third-party tracking domains (like based on a list from, for example, AdBlock Plus). That way, any other domain could still create Local Shared Objects. But the list would be long, and the domains from AdBlock Plus are probably all third-party domains anyway, so disabling Allow third-party Flash content to store data on your computer might have the very same result. Any experience anyone? (Final notes: if the above links to the settings panels do not work in the future, then use the URL that is known to Flash player as a starting point: www.adobe.com/go/settingsmanager. See also "You Deleted Your Cookies? Think Again" at Wired.com -- which uses Flash cookies itself as well... For the very suspicious using Time Machine: you may want to exclude both folders, for each user, and remove the trace that is already on your backup.)

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• Windows 7 computer apparently connected to working wireless network but can't access router page or internet

  - by Hemmer

  I can consistently connect successfully to both the router and the internet using both my phone and two different computers which strongly suggests that the issue is at the desktop end. Only my Windows 7 desktop machine has stopped getting internet connectivity. It manages to connect to the router's network using the Windows 7 wireless dialog, but can't access either the router configuration page (192.168.1.1) or the internet in general once connected. The strange thing is the wireless network icon in the notification bar shows a full strength signal, sometimes with the yellow warning triangle. The output of ipconfig /all is: Wireless LAN adapter Wireless Network Connection: Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Broadcom 802.11g Network Adapter Physical Address. . . . . . . . . : 00-12-17-94-98-90 DHCP Enabled. . . . . . . . . . . : Yes Autoconfiguration Enabled . . . . : Yes IPv4 Address. . . . . . . . . . . : 192.168.1.102(Preferred) Subnet Mask . . . . . . . . . . . : 255.255.255.0 Lease Obtained. . . . . . . . . . : 08 June 2011 10:32:16 Lease Expires . . . . . . . . . . : 08 June 2011 12:32:16 Default Gateway . . . . . . . . . : 192.168.1.1 DHCP Server . . . . . . . . . . . : 192.168.1.1 DNS Servers . . . . . . . . . . . : 194.168.4.100 194.168.8.100 NetBIOS over Tcpip. . . . . . . . : Enabled I've tried renewing DCHP settings disabling IPv6 resetting TCP stack uninstalling and reinstalling WLAN card drivers I've not installed anything new or made any changes to my knowledge, this just happened out of the blue. The only possible change is my friend connected his macbook to the network, but that has gone now and shouldn't have any lasting effects? TCP/IPv4 is set to automatically find an IP address. Antivirus is MSE (up to date) and doesn't detect anything unusual. Any ideas where to go next? Any help is greatly appreciated. For reference, the results of ipconfig /all on one of the working computers is: Ethernet adapter Wireless Network Connection: Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Broadcom 802.11g Network Adapter Physical Address. . . . . . . . . : 00-16-CF-67-E5-97 Dhcp Enabled. . . . . . . . . . . : Yes Autoconfiguration Enabled . . . . : Yes IP Address. . . . . . . . . . . . : 192.168.1.100 Subnet Mask . . . . . . . . . . . : 255.255.255.0 Default Gateway . . . . . . . . . : 192.168.1.1 DHCP Server . . . . . . . . . . . : 192.168.1.1 DNS Servers . . . . . . . . . . . : 194.168.4.100 194.168.8.100 Lease Obtained. . . . . . . . . . : 08 June 2011 10:26:38 Lease Expires . . . . . . . . . . : 08 June 2011 12:26:38 UPDATE: Still not working, but I've managed to find a temporary workaround by tethering my Android phone, effectively becoming a new wifi adapter. Will be moving to a new flat so will test if it is a network specific thing - maybe the card has got damaged somehow? Also will see if the card is working with Linux soon.

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• wxWidgets in Code::Blocks

  - by Vlad

  Hello all, I'm trying to compile the minimal sample from the "Cross-Platform GUI Programming with wxWidgets" book but the following compile errors: ||=== minimal, Debug ===| C:\SourceCode\Libraries\wxWidgets2.8\lib\gcc_lib\libwxmsw28u_core.a(corelib_frame.o):frame.cpp:(.text+0x918)||undefined reference to `__Unwind_Resume' | C:\SourceCode\Libraries\wxWidgets2.8\lib\gcc_lib\libwxmsw28u_core.a(corelib_frame.o):frame.cpp:(.text+0x931)||undefined reference to `__Unwind_Resume'| C:\SourceCode\Libraries\wxWidgets2.8\lib\gcc_lib\libwxmsw28u_core.a(corelib_frame.o):frame.cpp:(.text+0xa96)||undefined reference to `__Unwind_Resume'| C:\SourceCode\Libraries\wxWidgets2.8\lib\gcc_lib\libwxmsw28u_core.a(corelib_frame.o):frame.cpp:(.text+0xada)||undefined reference to `__Unwind_Resume'| C:\SourceCode\Libraries\wxWidgets2.8\lib\gcc_lib\libwxmsw28u_core.a(corelib_frame.o):frame.cpp:(.text+0xb1e)||undefined reference to `__Unwind_Resume'| C:\SourceCode\Libraries\wxWidgets2.8\lib\gcc_lib\libwxmsw28u_core.a(corelib_frame.o):frame.cpp:(.eh_frame+0x12)||undefined reference to `___gxx_personality_v0'| C:\SourceCode\Libraries\wxWidgets2.8\lib\gcc_lib\libwxmsw28u_core.a(corelib_datacmn.o):datacmn.cpp:(.eh_frame+0x11)||undefined reference to `___gxx_personality_v0'| C:\SourceCode\Libraries\wxWidgets2.8\lib\gcc_lib\libwxmsw28u_core.a(corelib_gdicmn.o):gdicmn.cpp:(.text+0x63a)||undefined reference to `__Unwind_Resume'| C:\SourceCode\Libraries\wxWidgets2.8\lib\gcc_lib\libwxmsw28u_core.a(corelib_gdicmn.o):gdicmn.cpp:(.text+0x696)||undefined reference to `__Unwind_Resume'| C:\SourceCode\Libraries\wxWidgets2.8\lib\gcc_lib\libwxmsw28u_core.a(corelib_gdicmn.o):gdicmn.cpp:(.text+0x6f2)||undefined reference to `__Unwind_Resume'| C:\SourceCode\Libraries\wxWidgets2.8\lib\gcc_lib\libwxmsw28u_core.a(corelib_gdicmn.o):gdicmn.cpp:(.text+0x74a)||undefined reference to `__Unwind_Resume'| C:\SourceCode\Libraries\wxWidgets2.8\lib\gcc_lib\libwxmsw28u_core.a(corelib_gdicmn.o):gdicmn.cpp:(.text+0x7a2)||undefined reference to `__Unwind_Resume'| C:\SourceCode\Libraries\wxWidgets2.8\lib\gcc_lib\libwxmsw28u_core.a(corelib_gdicmn.o):gdicmn.cpp:(.eh_frame+0x12)||undefined reference to `___gxx_personality_v0'| C:\SourceCode\Libraries\wxWidgets2.8\lib\gcc_lib\libwxmsw28u_core.a(corelib_menu.o):menu.cpp:(.text+0x88f)||undefined reference to `__Unwind_Resume'| C:\SourceCode\Libraries\wxWidgets2.8\lib\gcc_lib\libwxmsw28u_core.a(corelib_menu.o):menu.cpp:(.text+0x927)||undefined reference to `__Unwind_Resume' | C:\SourceCode\Libraries\wxWidgets2.8\lib\gcc_lib\libwxmsw28u_core.a(corelib_menu.o):menu.cpp:(.text+0x9bf)||undefined reference to `__Unwind_Resume'| C:\SourceCode\Libraries\wxWidgets2.8\lib\gcc_lib\libwxmsw28u_core.a(corelib_menu.o):menu.cpp:(.text+0xb8b)||undefined reference to `__Unwind_Resume'| C:\SourceCode\Libraries\wxWidgets2.8\lib\gcc_lib\libwxmsw28u_core.a(corelib_menu.o):menu.cpp:(.text+0xc87)||undefined reference to `__Unwind_Resume'| C:\SourceCode\Libraries\wxWidgets2.8\lib\gcc_lib\libwxmsw28u_core.a(corelib_menu.o):menu.cpp:(.eh_frame+0x12)||undefined reference to `___gxx_personality_v0'| C:\SourceCode\Libraries\wxWidgets2.8\lib\gcc_lib\libwxmsw28u_core.a(corelib_menucmn.o):menucmn.cpp:(.text+0xbc0)||undefined reference to `__Unwind_Resume'| C:\SourceCode\Libraries\wxWidgets2.8\lib\gcc_lib\libwxmsw28u_core.a(corelib_menucmn.o):menucmn.cpp:(.text+0xc59)||undefined reference to `__Unwind_Resume'| C:\SourceCode\Libraries\wxWidgets2.8\lib\gcc_lib\libwxmsw28u_core.a(corelib_menucmn.o):menucmn.cpp:(.text+0xcf5)||undefined reference to `__Unwind_Resume'| C:\SourceCode\Libraries\wxWidgets2.8\lib\gcc_lib\libwxmsw28u_core.a(corelib_menucmn.o):menucmn.cpp:(.text+0xda6)||undefined reference to `__Unwind_Resume'| C:\SourceCode\Libraries\wxWidgets2.8\lib\gcc_lib\libwxmsw28u_core.a(corelib_menucmn.o):menucmn.cpp:(.text+0xdce)||undefined reference to `__Unwind_Resume'| C:\SourceCode\Libraries\wxWidgets2.8\lib\gcc_lib\libwxmsw28u_core.a(corelib_menucmn.o):menucmn.cpp:(.eh_frame+0x12)||undefined reference to `___gxx_personality_v0'| C:\SourceCode\Libraries\wxWidgets2.8\lib\gcc_lib\libwxmsw28u_core.a(corelib_icon.o):icon.cpp:(.text+0x1ff)||undefined reference to `__Unwind_Resume'| C:\SourceCode\Libraries\wxWidgets2.8\lib\gcc_lib\libwxmsw28u_core.a(corelib_icon.o):icon.cpp:(.text+0x257)||undefined reference to `__Unwind_Resume'| C:\SourceCode\Libraries\wxWidgets2.8\lib\gcc_lib\libwxmsw28u_core.a(corelib_icon.o):icon.cpp:(.text+0x2af)||undefined reference to `__Unwind_Resume'| C:\SourceCode\Libraries\wxWidgets2.8\lib\gcc_lib\libwxmsw28u_core.a(corelib_icon.o):icon.cpp:(.text+0x2fc)||undefined reference to `__Unwind_Resume'| C:\SourceCode\Libraries\wxWidgets2.8\lib\gcc_lib\libwxmsw28u_core.a(corelib_icon.o):icon.cpp:(.text+0x36d)||undefined reference to `__Unwind_Resume'| C:\SourceCode\Libraries\wxWidgets2.8\lib\gcc_lib\libwxmsw28u_core.a(corelib_icon.o):icon.cpp:(.eh_frame+0x12)||undefined reference to `___gxx_personality_v0'| C:\SourceCode\Libraries\wxWidgets2.8\lib\gcc_lib\libwxmsw28u_core.a(corelib_gdiimage.o):gdiimage.cpp:(.text+0x4a8)||undefined reference to `__Unwind_Resume'| C:\SourceCode\Libraries\wxWidgets2.8\lib\gcc_lib\libwxmsw28u_core.a(corelib_gdiimage.o):gdiimage.cpp:(.text+0x73a)||undefined reference to `__Unwind_Resume'| C:\SourceCode\Libraries\wxWidgets2.8\lib\gcc_lib\libwxmsw28u_core.a(corelib_gdiimage.o):gdiimage.cpp:(.text+0x813)||undefined reference to `__Unwind_Resume'| C:\SourceCode\Libraries\wxWidgets2.8\lib\gcc_lib\libwxmsw28u_core.a(corelib_gdiimage.o):gdiimage.cpp:(.text+0xc06)||undefined reference to `__Unwind_Resume'| C:\SourceCode\Libraries\wxWidgets2.8\lib\gcc_lib\libwxmsw28u_core.a(corelib_gdiimage.o):gdiimage.cpp:(.text+0xd3e)||undefined reference to `__Unwind_Resume'| C:\SourceCode\Libraries\wxWidgets2.8\lib\gcc_lib\libwxmsw28u_core.a(corelib_gdiimage.o):gdiimage.cpp:(.eh_frame+0x12)||undefined reference to `___gxx_personality_v0'| C:\SourceCode\Libraries\wxWidgets2.8\lib\gcc_lib\libwxmsw28u_core.a(corelib_event.o):event.cpp:(.text+0x970)||undefined reference to `__Unwind_Resume'| C:\SourceCode\Libraries\wxWidgets2.8\lib\gcc_lib\libwxmsw28u_core.a(corelib_event.o):event.cpp:(.text+0xa80)||undefined reference to `__Unwind_Resume'| C:\SourceCode\Libraries\wxWidgets2.8\lib\gcc_lib\libwxmsw28u_core.a(corelib_event.o):event.cpp:(.text+0xb8c)||undefined reference to `__Unwind_Resume'| C:\SourceCode\Libraries\wxWidgets2.8\lib\gcc_lib\libwxmsw28u_core.a(corelib_event.o):event.cpp:(.text+0xc78)||undefined reference to `__Unwind_Resume'| C:\SourceCode\Libraries\wxWidgets2.8\lib\gcc_lib\libwxmsw28u_core.a(corelib_event.o):event.cpp:(.text+0xd4f)||undefined reference to `__Unwind_Resume'| C:\SourceCode\Libraries\wxWidgets2.8\lib\gcc_lib\libwxmsw28u_core.a(corelib_event.o):event.cpp:(.eh_frame+0x12)||undefined reference to `___gxx_personality_v0'| C:\SourceCode\Libraries\wxWidgets2.8\lib\gcc_lib\libwxmsw28u_core.a(corelib_appcmn.o):appcmn.cpp:(.text+0x2ef)||undefined reference to `__Unwind_Resume'| C:\SourceCode\Libraries\wxWidgets2.8\lib\gcc_lib\libwxmsw28u_core.a(corelib_appcmn.o):appcmn.cpp:(.text+0x32b)||undefined reference to `__Unwind_Resume'| C:\SourceCode\Libraries\wxWidgets2.8\lib\gcc_lib\libwxmsw28u_core.a(corelib_appcmn.o):appcmn.cpp:(.text+0x43d)||undefined reference to `__Unwind_Resume'| C:\SourceCode\Libraries\wxWidgets2.8\lib\gcc_lib\libwxmsw28u_core.a(corelib_appcmn.o):appcmn.cpp:(.text+0x586)||undefined reference to `__Unwind_Resume'| C:\SourceCode\Libraries\wxWidgets2.8\lib\gcc_lib\libwxmsw28u_core.a(corelib_appcmn.o):appcmn.cpp:(.text+0x601)||undefined reference to `__Unwind_Resume'| C:\SourceCode\Libraries\wxWidgets2.8\lib\gcc_lib\libwxmsw28u_core.a(corelib_appcmn.o):appcmn.cpp:(.eh_frame+0x12)||undefined reference to `___gxx_personality_v0'| C:\SourceCode\Libraries\wxWidgets2.8\lib\gcc_lib\libwxmsw28u_core.a(corelib_app.o):app.cpp:(.text+0x1da)||undefined reference to `__Unwind_Resume'| ||More errors follow but not being shown.| ||Edit the max errors limit in compiler options...| ||=== Build finished: 50 errors, 0 warnings ===| Here's the code sample from the book: #include "wx/wx.h" #include "mondrian.xpm" // Declare the application class class MyApp : public wxApp { public: // Called on application startup virtual bool OnInit(); }; // Declare our main frame class class MyFrame : public wxFrame { public: // Constructor MyFrame(const wxString& title); // Event handlers void OnQuit(wxCommandEvent& event); void OnAbout(wxCommandEvent& event); private: // This class handles events DECLARE_EVENT_TABLE() }; // Implements MyApp& GetApp() DECLARE_APP(MyApp) // Give wxWidgets the means to create a MyApp object IMPLEMENT_APP(MyApp) // Initialize the application bool MyApp::OnInit() { // Create the main application window MyFrame *frame = new MyFrame(wxT("Minimal wxWidgets App")); // Show it frame->Show(true); // Start the event loop return true; } // Event table for MyFrame BEGIN_EVENT_TABLE(MyFrame, wxFrame) EVT_MENU(wxID_ABOUT, MyFrame::OnAbout) EVT_MENU(wxID_EXIT, MyFrame::OnQuit) END_EVENT_TABLE() void MyFrame::OnAbout(wxCommandEvent& event) { wxString msg; msg.Printf(wxT("Hello and welcome to %s"), wxVERSION_STRING); wxMessageBox(msg, wxT("About Minimal"), wxOK | wxICON_INFORMATION, this); } void MyFrame::OnQuit(wxCommandEvent& event) { // Destroy the frame Close(); } MyFrame::MyFrame(const wxString& title) : wxFrame(NULL, wxID_ANY, title) { // Set the frame icon SetIcon(wxIcon(mondrian_xpm)); // Create a menu bar wxMenu *fileMenu = new wxMenu; // The “About” item should be in the help menu wxMenu *helpMenu = new wxMenu; helpMenu->Append(wxID_ABOUT, wxT("&About...\tF1"), wxT("Show about dialog")); fileMenu->Append(wxID_EXIT, wxT("E&xit\tAlt-X"), wxT("Quit this program")); // Now append the freshly created menu to the menu bar... wxMenuBar *menuBar = new wxMenuBar(); menuBar->Append(fileMenu, wxT("&File")); menuBar->Append(helpMenu, wxT("&Help")); // ... and attach this menu bar to the frame SetMenuBar(menuBar); // Create a status bar just for fun CreateStatusBar(2); SetStatusText(wxT("Welcome to wxWidgets!")); } So what's happenning? Thanks! P.S.: I installed wxWidgets through wxPack wich afaik comes with everything precomplied and i also added the wxWidgets directory to Global variables-base in Code::Blocks so everything should be correctly set, right?

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• Combining MVVM Light Toolkit and Unity 2.0

  - by Alan Cordner

  This is more of a commentary than a question, though feedback would be nice. I have been tasked to create the user interface for a new project we are doing. We want to use WPF and I wanted to learn all of the modern UI design techniques available. Since I am fairly new to WPF I have been researching what is available. I think I have pretty much settled on using MVVM Light Toolkit (mainly because of its "Blendability" and the EventToCommand behavior!), but I wanted to incorporate IoC also. So, here is what I have come up with. I have modified the default ViewModelLocator class in a MVVM Light project to use a UnityContainer to handle dependency injections. Considering I didn't know what 90% of these terms meant 3 months ago, I think I'm on the right track. // Example of MVVM Light Toolkit ViewModelLocator class that implements Microsoft // Unity 2.0 Inversion of Control container to resolve ViewModel dependencies. using Microsoft.Practices.Unity; namespace MVVMLightUnityExample { public class ViewModelLocator { public static UnityContainer Container { get; set; } #region Constructors static ViewModelLocator() { if (Container == null) { Container = new UnityContainer(); // register all dependencies required by view models Container .RegisterType<IDialogService, ModalDialogService>(new ContainerControlledLifetimeManager()) .RegisterType<ILoggerService, LogFileService>(new ContainerControlledLifetimeManager()) ; } } /// <summary> /// Initializes a new instance of the ViewModelLocator class. /// </summary> public ViewModelLocator() { ////if (ViewModelBase.IsInDesignModeStatic) ////{ //// // Create design time view models ////} ////else ////{ //// // Create run time view models ////} CreateMain(); } #endregion #region MainViewModel private static MainViewModel _main; /// <summary> /// Gets the Main property. /// </summary> public static MainViewModel MainStatic { get { if (_main == null) { CreateMain(); } return _main; } } /// <summary> /// Gets the Main property. /// </summary> [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Performance", "CA1822:MarkMembersAsStatic", Justification = "This non-static member is needed for data binding purposes.")] public MainViewModel Main { get { return MainStatic; } } /// <summary> /// Provides a deterministic way to delete the Main property. /// </summary> public static void ClearMain() { _main.Cleanup(); _main = null; } /// <summary> /// Provides a deterministic way to create the Main property. /// </summary> public static void CreateMain() { if (_main == null) { // allow Unity to resolve the view model and hold onto reference _main = Container.Resolve<MainViewModel>(); } } #endregion #region OrderViewModel // property to hold the order number (injected into OrderViewModel() constructor when resolved) public static string OrderToView { get; set; } /// <summary> /// Gets the OrderViewModel property. /// </summary> public static OrderViewModel OrderViewModelStatic { get { // allow Unity to resolve the view model // do not keep local reference to the instance resolved because we need a new instance // each time - the corresponding View is a UserControl that can be used multiple times // within a single window/view // pass current value of OrderToView parameter to constructor! return Container.Resolve<OrderViewModel>(new ParameterOverride("orderNumber", OrderToView)); } } /// <summary> /// Gets the OrderViewModel property. /// </summary> [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Performance", "CA1822:MarkMembersAsStatic", Justification = "This non-static member is needed for data binding purposes.")] public OrderViewModel Order { get { return OrderViewModelStatic; } } #endregion /// <summary> /// Cleans up all the resources. /// </summary> public static void Cleanup() { ClearMain(); Container = null; } } } And the MainViewModel class showing dependency injection usage: using GalaSoft.MvvmLight; using Microsoft.Practices.Unity; namespace MVVMLightUnityExample { public class MainViewModel : ViewModelBase { private IDialogService _dialogs; private ILoggerService _logger; /// <summary> /// Initializes a new instance of the MainViewModel class. This default constructor calls the /// non-default constructor resolving the interfaces used by this view model. /// </summary> public MainViewModel() : this(ViewModelLocator.Container.Resolve<IDialogService>(), ViewModelLocator.Container.Resolve<ILoggerService>()) { if (IsInDesignMode) { // Code runs in Blend --> create design time data. } else { // Code runs "for real" } } /// <summary> /// Initializes a new instance of the MainViewModel class. /// Interfaces are automatically resolved by the IoC container. /// </summary> /// <param name="dialogs">Interface to dialog service</param> /// <param name="logger">Interface to logger service</param> public MainViewModel(IDialogService dialogs, ILoggerService logger) { _dialogs = dialogs; _logger = logger; if (IsInDesignMode) { // Code runs in Blend --> create design time data. _dialogs.ShowMessage("Running in design-time mode!", "Injection Constructor", DialogButton.OK, DialogImage.Information); _logger.WriteLine("Running in design-time mode!"); } else { // Code runs "for real" _dialogs.ShowMessage("Running in run-time mode!", "Injection Constructor", DialogButton.OK, DialogImage.Information); _logger.WriteLine("Running in run-time mode!"); } } public override void Cleanup() { // Clean up if needed _dialogs = null; _logger = null; base.Cleanup(); } } } And the OrderViewModel class: using GalaSoft.MvvmLight; using Microsoft.Practices.Unity; namespace MVVMLightUnityExample { /// <summary> /// This class contains properties that a View can data bind to. /// <para> /// Use the <strong>mvvminpc</strong> snippet to add bindable properties to this ViewModel. /// </para> /// <para> /// You can also use Blend to data bind with the tool's support. /// </para> /// <para> /// See http://www.galasoft.ch/mvvm/getstarted /// </para> /// </summary> public class OrderViewModel : ViewModelBase { private const string testOrderNumber = "123456"; private Order _order; /// <summary> /// Initializes a new instance of the OrderViewModel class. /// </summary> public OrderViewModel() : this(testOrderNumber) { } /// <summary> /// Initializes a new instance of the OrderViewModel class. /// </summary> public OrderViewModel(string orderNumber) { if (IsInDesignMode) { // Code runs in Blend --> create design time data. _order = new Order(orderNumber, "My Company", "Our Address"); } else { _order = GetOrder(orderNumber); } } public override void Cleanup() { // Clean own resources if needed _order = null; base.Cleanup(); } } } And the code that could be used to display an order view for a specific order: public void ShowOrder(string orderNumber) { // pass the order number to show to ViewModelLocator to be injected //into the constructor of the OrderViewModel instance ViewModelLocator.OrderToShow = orderNumber; View.OrderView orderView = new View.OrderView(); } These examples have been stripped down to show only the IoC ideas. It took a lot of trial and error, searching the internet for examples, and finding out that the Unity 2.0 documentation is lacking (at best) to come up with this solution. Let me know if you think it could be improved.

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• "Exception has been thrown by the target of an invocation" Running Tests - VS2008 SP1

  - by omatrot

  I'm using Visual Studio 2008 Team Suite and I'm unable to run tests and display the Test/Windows/Test Result Window. The result is a dialog box with the following content : "Exception has been thrown by the target of an invocation". Team Explorer has been installed after Visual Studio 2008 SP1. So I have re-apllied the service pack. Searching the web I found that this error is pretty common but unfortunately, the proposed solutions does not work for me. The problem was never analysed so I decided to give it a try : I reproduced the problem on a computer, attached the process with windbg and start with the basic investigations. Following are the first results : 0:000>!dumpstack OS Thread Id: 0xdb0 (0) Current frame: USER32!NtUserWaitMessage+0x15 ChildEBP RetAddr Caller,Callee 003fec94 75a32674 USER32!DialogBox2+0x222, calling USER32!NtUserWaitMessage 003fecd0 75a3288a USER32!InternalDialogBox+0xe5, calling USER32!DialogBox2 003fecfc 75a6f8d0 USER32!SoftModalMessageBox+0x757, calling USER32!InternalDialogBox 003fed3c 6eb61996 mscorwks!Thread::ReverseLeaveRuntime+0x95, calling mscorwks!_EH_epilog3 003fedb0 75a6fbac USER32!MessageBoxWorker+0x269, calling USER32!SoftModalMessageBox 003fede0 6ea559c3 mscorwks!SetupThreadNoThrow+0x19a, calling mscorwks!_EH_epilog3_catch_GS 003fee24 6eb61d8a mscorwks!HasIllegalReentrancy+0xac, calling mscorwks!_EH_epilog3 003fee30 6ea89796 mscorwks!SimpleComCallWrapper::Release+0x2e, calling mscorwks!CompareExchangeMP 003fee38 6ea0da05 mscorwks!CLRException::HandlerState::CleanupTry+0x16, calling mscorwks!GetCurrentSEHRecord 003fee44 6ea0c9c0 mscorwks!Thread::EnablePreemptiveGC+0xf, calling mscorwks!Thread::CatchAtSafePoint 003fee4c 6ea8a241 mscorwks!Unknown_Release_Internal+0x24d, calling mscorwks!GCHolder<1,0,0>::Pop 003fee50 6ea0c86c mscorwks!_EH_epilog3_catch_GS+0xa, calling mscorwks!__security_check_cookie 003fee54 6ea8a24c mscorwks!Unknown_Release_Internal+0x258, calling mscorwks!_EH_epilog3_catch_GS 003fee7c 75a16941 USER32!UserCallWinProcCheckWow+0x13d, calling ntdll!RtlDeactivateActivationContextUnsafeFast 003feed8 7082119e msenv!ATL::CComCritSecLock<ATL::CComCriticalSection>::Lock+0xd, calling ntdll!RtlEnterCriticalSection 003fef08 75a6fe5b USER32!MessageBoxIndirectW+0x2e, calling USER32!MessageBoxWorker 003fef7c 70a1e367 msenv!MessageBoxPVoidW+0xda 003fefd4 70a1db60 msenv!VBDialogCover2+0x11b 003ff01c 70a1e4c0 msenv!VBMessageBox2W+0xf0, calling msenv!VBDialogCover2 003ff044 7087246b msenv!main_GetAppNameW+0xa, calling msenv!GetAppNameInternal 003ff04c 70a1e4f2 msenv!VBMessageBox3W+0x1c, calling msenv!VBMessageBox2W 003ff064 70a1d6d7 msenv!_IdMsgShow+0x362, calling msenv!VBMessageBox3W 003ff0cc 70951841 msenv!TaskDialogCallback+0x7e0, calling msenv!_IdMsgShow 003ff118 6eb20da4 mscorwks!Unknown_QueryInterface+0x230, calling mscorwks!_EH_epilog3_catch_GS 003ff14c 6eb20c43 mscorwks!Unknown_QueryInterface_Internal+0x3d8, calling mscorwks!_EH_epilog3_catch_GS 003ff168 02006ec4 02006ec4, calling 0247a1e8 003ff16c 6ea0c86c mscorwks!_EH_epilog3_catch_GS+0xa, calling mscorwks!__security_check_cookie 003ff198 6eb20562 mscorwks!COMToCLRWorker+0xb34, calling mscorwks!_EH_epilog3_catch_GS 003ff19c 0247a235 0247a235, calling mscorwks!COMToCLRWorker 003ff1c4 7083249f msenv!CVSCommandTarget::ExecCmd+0x937 003ff1e4 7086d5c8 msenv!VsReportErrorInfo+0x11, calling msenv!TaskDialogCallback+0xd8 003ff1f8 7093e65b msenv!CVSCommandTarget::ExecCmd+0x945, calling msenv!VsReportErrorInfo 003ff25c 7081f53a msenv!ATL::CComPtr<IVsLanguageInfo>::~CComPtr<IVsLanguageInfo>+0x24, calling msenv!_EH_epilog3 003ff260 70b18d72 msenv!LogCommand+0x4c, calling msenv!ATL::CComPtr<IVsCodePageSelection>::~CComPtr<IVsCodePageSelection> 003ff264 70b18d77 msenv!LogCommand+0x51, calling msenv!_EH_epilog3 003ff280 70a4fd0e msenv!CMsoButtonUser::FClick+0x1d1, calling msenv!CVSCommandTarget::ExecCmd 003ff2f4 70823a87 msenv!CTLSITE::QueryInterface+0x16 003ff31c 70cb7d4d msenv!TBCB::FNotifyFocus+0x204 003ff35c 70ce5fda msenv!TB::NotifyControl+0x101 003ff3bc 709910f6 msenv!TB::FRequestFocus+0x4ed, calling msenv!TB::NotifyControl 003ff414 708254ba msenv!CMsoButtonUser::FEnabled+0x3d, calling msenv!GetQueryStatusFlags 003ff428 7086222a msenv!TBC::FAutoEnabled+0x24 003ff43c 7098e1eb msenv!TB::LProcessInputMsg+0xdb4 003ff458 6bec1c49 (MethodDesc 0x6bcd7f54 +0x89 System.Windows.Forms.Form.DefWndProc(System.Windows.Forms.Message ByRef)), calling 6be3b738 003ff50c 70823ab0 msenv!FPtbFromSite+0x16 003ff520 70991c43 msenv!TB::PtbParent+0x25, calling msenv!FPtbFromSite 003ff52c 708dda49 msenv!TBWndProc+0x2da 003ff588 0203d770 0203d770, calling 0247a1e8 003ff598 70822a70 msenv!CPaneFrame::Release+0x118, calling msenv!_EH_epilog3 003ff5b0 75a16238 USER32!InternalCallWinProc+0x23 003ff5dc 75a168ea USER32!UserCallWinProcCheckWow+0x109, calling USER32!InternalCallWinProc 003ff620 75a16899 USER32!UserCallWinProcCheckWow+0x6a, calling ntdll!RtlActivateActivationContextUnsafeFast 003ff654 75a17d31 USER32!DispatchMessageWorker+0x3bc, calling USER32!UserCallWinProcCheckWow 003ff688 70847f2b msenv!CMsoComponent::FPreTranslateMessage+0x72, calling msenv!MainFTranslateMessage 003ff6b4 75a17dfa USER32!DispatchMessageW+0xf, calling USER32!DispatchMessageWorker 003ff6c4 70831553 msenv!EnvironmentMsgLoop+0x1ea, calling USER32!DispatchMessageW 003ff6f8 708eb9bd msenv!CMsoCMHandler::FPushMessageLoop+0x86, calling msenv!EnvironmentMsgLoop 003ff724 708eb94d msenv!SCM::FPushMessageLoop+0xb7 003ff74c 708eb8e9 msenv!SCM_MsoCompMgr::FPushMessageLoop+0x28, calling msenv!SCM::FPushMessageLoop 003ff768 708eb8b8 msenv!CMsoComponent::PushMsgLoop+0x28 003ff788 708ebe4e msenv!VStudioMainLogged+0x482, calling msenv!CMsoComponent::PushMsgLoop 003ff7ac 70882afe msenv!CVsActivityLogSingleton::Instance+0xdf, calling msenv!_EH_epilog3 003ff7d8 70882afe msenv!CVsActivityLogSingleton::Instance+0xdf, calling msenv!_EH_epilog3 003ff7dc 707e4e31 msenv!VActivityLogStartupEntries+0x42 003ff7f4 7081f63b msenv!ATL::CComPtr<IClassFactory>::~CComPtr<IClassFactory>+0x24, calling msenv!_EH_epilog3 003ff7f8 708b250f msenv!ATL::CComQIPtr<IUnknown,&IID_IUnknown>::~CComQIPtr<IUnknown,&IID_IUnknown>+0x1d, calling msenv!_EH_epilog3 003ff820 708e7561 msenv!VStudioMain+0xc1, calling msenv!VStudioMainLogged 003ff84c 2f32aabc devenv!util_CallVsMain+0xff 003ff878 2f3278f2 devenv!CDevEnvAppId::Run+0x11fd, calling devenv!util_CallVsMain 003ff97c 77533b23 ntdll!RtlpAllocateHeap+0xe73, calling ntdll!_SEH_epilog4 003ff9f0 77536cd7 ntdll!RtlpLowFragHeapAllocFromContext+0x882, calling ntdll!RtlpSubSegmentInitialize 003ffa10 7753609f ntdll!RtlNtStatusToDosError+0x3b, calling ntdll!RtlNtStatusToDosErrorNoTeb 003ffa14 775360a4 ntdll!RtlNtStatusToDosError+0x40, calling ntdll!_SEH_epilog4 003ffa40 775360a4 ntdll!RtlNtStatusToDosError+0x40, calling ntdll!_SEH_epilog4 003ffa44 75bd2736 kernel32!LocalBaseRegOpenKey+0x159, calling ntdll!RtlNtStatusToDosError 003ffa48 75bd2762 kernel32!LocalBaseRegOpenKey+0x22a, calling kernel32!_SEH_epilog4 003ffac4 75bd2762 kernel32!LocalBaseRegOpenKey+0x22a, calling kernel32!_SEH_epilog4 003ffac8 75bd28c9 kernel32!RegOpenKeyExInternalW+0x130, calling kernel32!LocalBaseRegOpenKey 003ffad8 75bd28de kernel32!RegOpenKeyExInternalW+0x211 003ffae0 75bd28e5 kernel32!RegOpenKeyExInternalW+0x21d, calling kernel32!_SEH_epilog4 003ffb04 6f282e2b MSVCR90!_unlock+0x15, calling ntdll!RtlLeaveCriticalSection 003ffb14 75bd2642 kernel32!BaseRegCloseKeyInternal+0x41, calling ntdll!NtClose 003ffb28 75bd25d0 kernel32!RegCloseKey+0xd4, calling kernel32!_SEH_epilog4 003ffb5c 75bd25d0 kernel32!RegCloseKey+0xd4, calling kernel32!_SEH_epilog4 003ffb60 2f321ea4 devenv!DwInitSyncObjects+0x340 003ffb90 2f327bf4 devenv!WinMain+0x74, calling devenv!CDevEnvAppId::Run 003ffbac 2f327c68 devenv!License::GetPID+0x258, calling devenv!WinMain 003ffc3c 75bd3677 kernel32!BaseThreadInitThunk+0xe 003ffc48 77539d72 ntdll!__RtlUserThreadStart+0x70 003ffc88 77539d45 ntdll!_RtlUserThreadStart+0x1b, calling ntdll!__RtlUserThreadStart 0:000> !pe -nested Exception object: 050aae9c Exception type: System.Reflection.TargetInvocationException Message: Exception has been thrown by the target of an invocation. InnerException: System.NullReferenceException, use !PrintException 050aac64 to see more StackTrace (generated): SP IP Function 003FEC2C 6D2700F7 mscorlib_ni!System.RuntimeType.CreateInstanceSlow(Boolean, Boolean)+0x57 003FEC5C 6D270067 mscorlib_ni!System.RuntimeType.CreateInstanceImpl(Boolean, Boolean, Boolean)+0xe7 003FEC94 6D270264 mscorlib_ni!System.Activator.CreateInstance(System.Type, Boolean)+0x44 003FECA4 6AD02DAF Microsoft_VisualStudio_Shell_9_0_ni!Microsoft.VisualStudio.Shell.Package.CreateToolWindow(System.Type, Int32, Microsoft.VisualStudio.Shell.ProvideToolWindowAttribute)+0x67 003FED30 6AD0311B Microsoft_VisualStudio_Shell_9_0_ni!Microsoft.VisualStudio.Shell.Package.CreateToolWindow(System.Type, Int32)+0xb7 003FED58 6AD02D12 Microsoft_VisualStudio_Shell_9_0_ni!Microsoft.VisualStudio.Shell.Package.FindToolWindow(System.Type, Int32, Boolean, Microsoft.VisualStudio.Shell.ProvideToolWindowAttribute)+0x7a 003FED88 6AD02D39 Microsoft_VisualStudio_Shell_9_0_ni!Microsoft.VisualStudio.Shell.Package.FindToolWindow(System.Type, Int32, Boolean)+0x11 003FED94 02585E30 Microsoft_VisualStudio_QualityTools_TestCaseManagement!Microsoft.VisualStudio.TestTools.TestCaseManagement.QualityToolsPackage.InitToolWindowVariable[[System.__Canon, mscorlib]](System.__Canon ByRef, System.String, Boolean)+0x58 003FEDD0 02585DBE Microsoft_VisualStudio_QualityTools_TestCaseManagement!Microsoft.VisualStudio.TestTools.TestCaseManagement.QualityToolsPackage.InitToolWindowVariable[[System.__Canon, mscorlib]](System.__Canon ByRef, System.String)+0x36 003FEDE4 02585D32 Microsoft_VisualStudio_QualityTools_TestCaseManagement!Microsoft.VisualStudio.TestTools.TestCaseManagement.QualityToolsPackage.ShowToolWindow[[System.__Canon, mscorlib]](System.__Canon ByRef, System.String, Boolean)+0x3a 003FEE00 02585AB4 Microsoft_VisualStudio_QualityTools_TestCaseManagement!Microsoft.VisualStudio.TestTools.TestCaseManagement.QualityToolsPackage.OpenTestResultsToolWindow()+0x2c 003FEE10 02585A6E Microsoft_VisualStudio_QualityTools_TestCaseManagement!Microsoft.VisualStudio.TestTools.TestCaseManagement.QualityToolsPackage.OnMenuViewTestResults(System.Object, System.EventArgs)+0x6 003FEE18 6CD4F993 System_ni!System.ComponentModel.Design.MenuCommand.Invoke()+0x43 003FEE40 6CD4F9D4 System_ni!System.ComponentModel.Design.MenuCommand.Invoke(System.Object)+0x8 003FEE48 6AD000FA Microsoft_VisualStudio_Shell_9_0_ni!Microsoft.VisualStudio.Shell.OleMenuCommandService.Microsoft.VisualStudio.OLE.Interop.IOleCommandTarget.Exec(System.Guid ByRef, UInt32, UInt32, IntPtr, IntPtr)+0x11a 003FEEA0 6AD03FB8 Microsoft_VisualStudio_Shell_9_0_ni!Microsoft.VisualStudio.Shell.Package.Microsoft.VisualStudio.OLE.Interop.IOleCommandTarget.Exec(System.Guid ByRef, UInt32, UInt32, IntPtr, IntPtr)+0x44 StackTraceString: <none> HResult: 80131604 0:000> !PrintException 050aac64 Exception object: 050aac64 Exception type: System.NullReferenceException Message: Object reference not set to an instance of an object. InnerException: <none> StackTrace (generated): SP IP Function 003FE660 078E60BE Microsoft_VisualStudio_TeamSystem_Integration!Microsoft.VisualStudio.TeamSystem.Integration.TcmResultsPublishManager..ctor(Microsoft.VisualStudio.TeamSystem.Integration.ResultsPublishManager)+0xc6 003FE674 078E5C91 Microsoft_VisualStudio_TeamSystem_Integration!Microsoft.VisualStudio.TeamSystem.Integration.ResultsPublishManager..ctor(Microsoft.VisualStudio.TeamSystem.Integration.TeamFoundationHostHelper)+0x59 003FE684 078E2FA0 Microsoft_VisualStudio_TeamSystem_Integration!Microsoft.VisualStudio.TeamSystem.Integration.VsetServerHelper..ctor(System.IServiceProvider)+0x50 003FE6A4 078E2E90 Microsoft_VisualStudio_TeamSystem_Common!Microsoft.VisualStudio.TeamSystem.Integration.Client.VsetHelper.InitializeThrow(System.IServiceProvider)+0x20 003FE6B8 078E2E2A Microsoft_VisualStudio_TeamSystem_Common!Microsoft.VisualStudio.TeamSystem.Integration.Client.VsetHelper.InitializeHelper(System.IServiceProvider)+0x22 003FE6E0 078E2DEC Microsoft_VisualStudio_TeamSystem_Common!Microsoft.VisualStudio.TeamSystem.Integration.Client.VsetHelper.CreateVsetHelper(System.IServiceProvider)+0x1c 003FE6F0 078E2DAC Microsoft_VisualStudio_QualityTools_TestCaseManagement!Microsoft.VisualStudio.TestTools.TestCaseManagement.QualityToolsPackage.get_VsetHelper()+0x14 003FE6F8 02586BBE Microsoft_VisualStudio_QualityTools_TestCaseManagement!Microsoft.VisualStudio.TestTools.TestCaseManagement.ResultsToolWindow..ctor()+0x9f6 003FE798 02585F8A Microsoft_VisualStudio_QualityTools_TestCaseManagement!Microsoft.VisualStudio.TestTools.TestCaseManagement.ResultToolWindowHost..ctor()+0x1a StackTraceString: <none> HResult: 80004003 In order to be able to continue the analysis, we need to get the parameters to see what is going on. I also tried to run devenv.exe with the /log switch. No error in the log after reproducing the problem. Finally, If Team Explorer is removed from the system, the problem goes away. Any help appreciated. TIA. Olivier.

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• Jquery Smart Wizard freezing up

  - by Andrew

  I'm using IE 8 and the jquery smart wizard version 3.2.0. I've noticed when enclose the smart wizard within an additional <div> tag (with the intent of displaying the wizard within a jquery dialog popup), the wizard will not advance steps when a function is specified for the onLeaveStep event. And now for the code: The javascript setting up the wizard: $('#wizard').smartWizard({ transitionEffect: 'slideleft', onLeaveStep: leaveAStepCallback, onFinish: onFinishCallback}); Simple functions associated with the events for the wizard: // wizard functions function leaveAStepCallback(obj) { // Get current step var step_num = obj.attr('rel'); // get the current step number } function onFinishCallback() { alert('Finish Called'); } function showStep(obj) { // Get current step var step_num = obj.attr('rel'); // get the current step number } And the HTML markup (I removed the step content within the <p> tags for brevity - this resulted it the same lack of functionality as if there was content within, so that can be ruled out) <div id="wizDialog"> <div id="wizard" class="swMain"> <ul> <li><a href="#step-1"> <label class="stepNumber">1</label> <span class="stepDesc"> Step 1<br /> <small>Step 1 - </small> </span> </a></li> <li><a href="#step-2"> <label class="stepNumber">2</label> <span class="stepDesc"> Step 2<br /> <small>Step 2 - </small> </span> </a></li> <li><a href="#step-3"> <label class="stepNumber">3</label> <span class="stepDesc"> Step 3<br /> <small>Step 3 - </small> </span> </a></li> <li><a href="#step-4"> <label class="stepNumber">4</label> <span class="stepDesc"> Step 4<br /> <small>Step 4 - </small> </span> </a></li> <li><a href="#step-5"> <label class="stepNumber">5</label> <span class="stepDesc"> Step 5<br /> <small>Step 5 - </small> </span> </a></li> <li><a href="#step-6"> <label class="stepNumber">6</label> <span class="stepDesc"> Step 6<br /> <small>Step 6 - </small> </span> </a></li> <li><a href="#step-7"> <label class="stepNumber">7</label> <span class="stepDesc"> Step 7<br /> <small>Step 7 - </small> </span> </a></li> <li><a href="#step-8"> <label class="stepNumber">8</label> <span class="stepDesc"> Step 8<br /> <small>Step 8 - </small> </span> </a></li> </ul> <div id="step-1"> <h2 class="StepTitle">Step 1 Content</h2> <p> </p> </div> <div id="step-2"> <h2 class="StepTitle">Step 2 Content</h2> <p> </p> </div> <div id="step-3"> <h2 class="StepTitle">Step 3 Content</h2> <p> </p> </div> <div id="step-4"> <h2 class="StepTitle">Step 4 Content</h2> <p> </p> </div> <div id="step-5"> <h2 class="StepTitle">Step 5 Content</h2> <p> </p> </div> <div id="step-6"> <h2 class="StepTitle">Step 6 Content</h2> <p> </p> </div> <div id="step-7"> <h2 class="StepTitle">Step 7 Content</h2> <p> </p> </div> <div id="step-8"> <h2 class="StepTitle">Step 8 Content</h2> <p> </p> </div> </div> </div> Has anyone had similar results with this? Or have an explanation why the wizard will not work when nested within additional <div> tags?

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• is this correct use of jquery's document.ready?

  - by Haroldo

  The below file contains all the javascript for a page. Performance is the highest priority. Is this the most efficient way? Do all click/hover events need to to be inside the doc.ready? //DOCUMENT.READY EVENTS //--------------------------------------------------------------------------- $(function(){ // mark events as not loaded $('.event').data({ t1_loaded: false, t2_loaded: false, t3_loaded: false, art_req: false }); //mark no events have been clicked $('#wrap_right').data('first_click_made', false); // cal-block event click $('#cal_blocks div.event, #main_search div.event').live('click', function(){ var id = $(this).attr('id').split('e')[1]; event_click(id); }); // jq history $.historyInit(function(hash){ if(hash) { event_click(hash); } }); // search $('#search_input').typeWatch ({ callback: function(){ var q = $('#search_input').attr('value'); search(q); }, wait : 350, highlight : false, captureLength : 2 }); $('#search_input, #main_search div.close').live('click',function(){ $(this).attr("value",""); reset_srch_res(); }); $('#main_search').easydrag(); $('a.dialog').colorbox(); //TAB CLICK -> AJAX LOAD TAB $('#wrap_right .rs_tabs li').live('click', function(){ $this = $(this); var id = $('#wrap_right').data('curr_event'); var tab = parseInt($this.attr('rel')); //hide other tabs $('#rs_'+id+' .tab_body').hide(); //mark current(clicked) tab $('#rs_'+id+' .rs_tabs li').removeClass('curr_tab'); $this.addClass('curr_tab'); //is the tab already loaded and hidden? var loaded = $('#e'+id).data('t'+tab+'_loaded'); //console.log('id: '+id+', tab: '+tab+', loaded: '+loaded); if(loaded === true) { $('#rs_'+id+' .tab'+tab).show(); if (tab == 2) { art_requested(id); } } else { //ajax load in the tab $('#rs_'+id+' .tab'+tab).load('index_files/tab'+tab+'.php?id='+id, function(){ //after load callback if (tab == 1) { $('#rs_' + id + ' .frame').delay(600).fadeIn(600) }; if (tab == 2) { art_requested(id); } }); //mark tab as loaded $('#e'+id).data('t'+tab+'_loaded', true); //fade in current tab $('#rs_'+id+' .tab'+tab).show(); } }) }); // LOAD RS FUNCTIONS //--------------------------------------------------------------------------- function event_click(id){ window.location.hash = id; //mark current event $('#wrap_right').data('curr_event', id); //hide any other events if($('#wrap_right').data('first_click_made') === true) { $('#wrap_right .event_rs').hide(); } //frame loaded before? var loaded = $('#e'+id).data('t1_loaded'); if(loaded === true) { $('#rs_'+id).show(); } else { create_frame(id); } //open/load the first tab $('#rs_'+id+' .t1').click(); $('#wrap_right').data('first_click_made', true); $('#cal_blocks').scrollTo('#e'+id, 1000, {offset: {top:-220, left:0}}); } function create_frame(id){ var art = ents[id].art; var ven = ents[id].ven; var type = ents[id].gig_club; //select colours for tabs if(type == 1){ var label = 'gig';} else if(type == 2){ var label = 'club';} else if(type == 0){ var label = 'other';} //create rs container for this event var frame = '<div id="rs_'+id+'" class="event_rs">'; frame += '<div class="title_strip"></div>'; frame += '<div class="rs_tabs"><ul class="'+label+'"><li class="t1 nav_tab1 curr_tab hand" rel="1"></li>'; if(art == 1){frame += '<li class="t2 nav_tab2 hand" rel="2"></li>';} if(ven == 1){frame += '<li class="t3 nav_tab2 hand" rel="3"></li>';} frame += '</ul></div>'; frame += '<div id="rs_content"><div class="tab_body tab1" ></div>'; if(art == 1){frame += '<div class="tab_body tab2"></div>';} if(ven == 1){frame += '<div class="tab_body tab3"></div>';} frame += '</div>'; frame += '</div>'; $('#wrap_right').append(frame); //mark current event in cal-blocks $('#cal_blocks .event_sel').removeClass('event_sel'); $('#e'+id).addClass('event_sel'); if($('#wrap_right').data('first_click_made') === false) { $('#wrap_right').delay(500).slideDown(); $('#rs_'+id+' .rs_tabs').delay(800).fadeIn(); } }; // FUNCTIONS //--------------------------------------------------------------------------- //check to see if an artist has been requested function art_requested(id){ var art_req = $('#e'+id).data('art_req'); if(art_req !== false) { //alert(art_req); $('#art_'+art_req).click(); } } //scroll artist panes smoothly (scroll bars cause glitches otherwise) function before (){ if(!IE){$('#art_scrollable .bio_etc').css('overflow','-moz-scrollbars-none');} } function after (){ if(!IE){$('#art_scrollable .bio_etc').css('overflow','auto');} } function prep_media_carousel(){ //youtube and soundcloud player $("#rs_content .yt_scrollable a.yt, #rs_content .yt_scrollable a.sc").colorbox({ overlayClose : false, opacity : 0 }); $("#colorbox").easydrag(true); $('#cboxOverlay').remove(); } function make_carousel_scrollable(unique_id){ $('#scroll_'+unique_id).scrollable({ size:1, clickable:false, nextPage:'#r_'+unique_id, prevPage:'#l_'+unique_id }); } function check_l_r_arrows(total, counter, art_id){ //left arrow if(counter > 0) { $('#l_'+art_id).show(); $('#l_'+art_id+'_inactive').hide(); } else { $('#l_'+art_id).hide(); $('#l_'+art_id+'_inactive').show(); } //right arrow if(counter < total-3) { $('#r_'+art_id).show(); $('#r_'+art_id+'_inactive').hide(); } else { $('#r_'+art_id).hide(); $('#r_'+art_id+'_inactive').show(); } } function reset_srch_res(){ $('#main_search').fadeOut(400).children().remove(); } function search(q){ $.ajax({ type: 'GET', url: 'index_files/srch/search.php?q='+q, success: function(e) { $('#main_search').html(e).show(); } }); }

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• How to send audio data from Java Applet to Rails controller

  - by cooldude

  Hi, I have to send the audio data in byte array obtain by recording from java applet at the client side to rails server at the controller in order to save. So, what encoding parameters at the applet side be used and in what form the audio data be converted like String or byte array so that rails correctly recieve data and then I can save that data at the rails in the file. As currently the audio file made by rails controller is not playing. It is the following ERROR : LAVF_header: av_open_input_stream() failed while playing with the mplayer. Here is the Java Code: package networksocket; import java.util.logging.Level; import java.util.logging.Logger; import javax.swing.JApplet; import java.net.*; import java.io.*; import java.awt.event.*; import java.awt.*; import java.sql.*; import javax.swing.*; import javax.swing.border.*; import java.awt.*; import java.util.Properties; import javax.swing.plaf.basic.BasicSplitPaneUI.BasicHorizontalLayoutManager; import sun.awt.HorizBagLayout; import sun.awt.VerticalBagLayout; import sun.misc.BASE64Encoder; /** * * @author mukand */ public class Urlconnection extends JApplet implements ActionListener { /** * Initialization method that will be called after the applet is loaded * into the browser. */ public BufferedInputStream in; public BufferedOutputStream out; public String line; public FileOutputStream file; public int bytesread; public int toread=1024; byte b[]= new byte[toread]; public String f="FINISH"; public String match; public File fileopen; public JTextArea jTextArea; public Button refreshButton; public HttpURLConnection urlConn; public URL url; OutputStreamWriter wr; BufferedReader rd; @Override public void init() { // TODO start asynchronous download of heavy resources //textField= new TextField("START"); //getContentPane().add(textField); JPanel p = new JPanel(); jTextArea= new JTextArea(1500,1500); p.setLayout(new GridLayout(1,1, 1,1)); p.add(new JLabel("Server Details")); p.add(jTextArea); Container content = getContentPane(); content.setLayout(new GridBagLayout()); // Used to center the panel content.add(p); jTextArea.setLineWrap(true); refreshButton = new java.awt.Button("Refresh"); refreshButton.reshape(287,49,71,23); refreshButton.setFont(new Font("Dialog", Font.PLAIN, 12)); refreshButton.addActionListener(this); add(refreshButton); Properties properties = System.getProperties(); properties.put("http.proxyHost", "netmon.iitb.ac.in"); properties.put("http.proxyPort", "80"); } @Override public void actionPerformed(ActionEvent e) { try { url = new URL("http://localhost:3000/audio/audiorecieve"); urlConn = (HttpURLConnection)url.openConnection(); //String login = "mukandagarwal:rammstein$"; //String encodedLogin = new BASE64Encoder().encodeBuffer(login.getBytes()); //urlConn.setRequestProperty("Proxy-Authorization",login); urlConn.setRequestMethod("POST"); // urlConn.setRequestProperty("Content-Type", //"application/octet-stream"); //urlConn.setRequestProperty("Content-Type","audio/mpeg");//"application/x-www- form-urlencoded"); //urlConn.setRequestProperty("Content-Type","application/x-www- form-urlencoded"); //urlConn.setRequestProperty("Content-Length", "" + // Integer.toString(urlParameters.getBytes().length)); urlConn.setRequestProperty("Content-Language", "UTF-8"); urlConn.setDoOutput(true); urlConn.setDoInput(true); byte bread[]=new byte[2048]; int iread; char c; String data=URLEncoder.encode("key1", "UTF-8")+ "="; //String data="key1="; FileInputStream fileread= new FileInputStream("//home//mukand//Hellion.ogg");//Dogs.mp3");//Desktop//mausam1.mp3"); while((iread=fileread.read(bread))!=-1) { //data+=(new String()); /*for(int i=0;i<iread;i++) { //c=(char)bread[i]; System.out.println(bread[i]); }*/ data+= URLEncoder.encode(new String(bread,iread), "UTF-8");//new String(new String(bread));// // data+=new String(bread,iread); } //urlConn.setRequestProperty("Content-Length",Integer.toString(data.getBytes().length)); System.out.println(data); //data+=URLEncoder.encode("mukand", "UTF-8"); //data += "&" + URLEncoder.encode("key2", "UTF-8") + "=" + URLEncoder.encode("value2", "UTF-8"); //data="key1="; wr = new OutputStreamWriter(urlConn.getOutputStream());//urlConn.getOutputStream(); //if((iread=fileread.read(bread))!=-1) // wr.write(bread,0,iread); wr.write(data); wr.flush(); fileread.close(); jTextArea.append("Send"); // Get the response rd = new BufferedReader(new InputStreamReader(urlConn.getInputStream())); while ((line = rd.readLine()) != null) { jTextArea.append(line); } wr.close(); rd.close(); //jTextArea.append("click"); } catch (MalformedURLException ex) { Logger.getLogger(Urlconnection.class.getName()).log(Level.SEVERE, null, ex); } catch (IOException ex) { Logger.getLogger(Urlconnection.class.getName()).log(Level.SEVERE, null, ex); } } @Override public void start() { } @Override public void stop() { } @Override public void destroy() { } // TODO overwrite start(), stop() and destroy() methods } Here is the Rails controller function for recieving: def audiorecieve puts "///////////////////////////////////////******RECIEVED*******////" puts params[:key1]#+" "+params[:key2] data=params[:key1] #request.env('RAW_POST_DATA') file=File.new("audiodata.ogg", 'w') file.write(data) file.flush file.close puts "////**************DONE***********//////////////////////" end Please reply quickly

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• Customized listfield with image displaying from a url

  - by arunabha

  I am displaying a customized list field with text on the right side and image on the left side.The image comes from a URL dynamically.Initially i am placing a blank image on the left of the list field,then call URLBitmapField class's setURL method,which actually does the processing and places the processed image on top of the blank image.The image gets displayed on the list field,but to see that processed image i need to press any key or click on the list field items.I want the processed image to be displayed automatically in the list field after the processing.Can anyone tell me where i am getting wrong? import java.util.Vector; import net.rim.device.api.system.Bitmap; import net.rim.device.api.system.Display; import net.rim.device.api.ui.ContextMenu; import net.rim.device.api.ui.DrawStyle; import net.rim.device.api.ui.Field; import net.rim.device.api.ui.Font; import net.rim.device.api.ui.Graphics; import net.rim.device.api.ui.Manager; import net.rim.device.api.ui.MenuItem; import net.rim.device.api.ui.UiApplication; import net.rim.device.api.ui.component.BitmapField; import net.rim.device.api.ui.component.Dialog; import net.rim.device.api.ui.component.LabelField; import net.rim.device.api.ui.component.ListField; import net.rim.device.api.ui.component.ListFieldCallback; import net.rim.device.api.ui.component.NullField; import net.rim.device.api.ui.container.FullScreen; import net.rim.device.api.ui.container.MainScreen; import net.rim.device.api.ui.container.VerticalFieldManager; import net.rim.device.api.util.Arrays; import net.rim.device.api.ui.component.ListField; public class TaskListField extends UiApplication { // statics // ------------------------------------------------------------------ public static void main(String[] args) { TaskListField theApp = new TaskListField(); theApp.enterEventDispatcher(); } public TaskListField() { pushScreen(new TaskList()); } } class TaskList extends MainScreen implements ListFieldCallback { private Vector rows; private Bitmap p1; private Bitmap p2; private Bitmap p3; String Task; ListField listnew = new ListField(); private VerticalFieldManager metadataVFM; TableRowManager row; public TaskList() { super(); URLBitmapField artistImgField; listnew.setRowHeight(80); listnew.setCallback(this); rows = new Vector(); for (int x = 0; x <3; x++) { row = new TableRowManager(); artistImgField = new URLBitmapField(Bitmap .getBitmapResource("res/images/bg.jpg")); row.add(artistImgField); String photoURL = "someimagefrmurl.jpg"; Log.info(photoURL); // strip white spaces in the url, which is causing the // images to not display properly for (int i = 0; i < photoURL.length(); i++) { if (photoURL.charAt(i) == ' ') { photoURL = photoURL.substring(0, i) + "%20" + photoURL.substring(i + 1, photoURL.length()); } } Log.info("Processed URL: " + photoURL); artistImgField.setURL(photoURL); LabelField task = new LabelField("Display"); row.add(task); LabelField task1 = new LabelField( "Now Playing" + String.valueOf(x)); Font myFont = Font.getDefault().derive(Font.PLAIN, 12); task1.setFont(myFont); row.add(task1); rows.addElement(row); } listnew.setSize(rows.size()); this.add(listnew); //listnew.invalidate(); } // ListFieldCallback Implementation public void drawListRow(ListField listField, Graphics g, int index, int y, int width) { TableRowManager rowManager = (TableRowManager) rows.elementAt(index); rowManager.drawRow(g, 0, y, width, listnew.getRowHeight()); } protected void drawFocus(Graphics graphics, boolean on) { } private class TableRowManager extends Manager { public TableRowManager() { super(0); } // Causes the fields within this row manager to be layed out then // painted. public void drawRow(Graphics g, int x, int y, int width, int height) { // Arrange the cell fields within this row manager. layout(width, height); // Place this row manager within its enclosing list. setPosition(x, y); // Apply a translating/clipping transformation to the graphics // context so that this row paints in the right area. g.pushRegion(getExtent()); // Paint this manager's controlled fields. subpaint(g); g.setColor(0x00CACACA); g.drawLine(0, 0, getPreferredWidth(), 0); // Restore the graphics context. g.popContext(); } // Arrages this manager's controlled fields from left to right within // the enclosing table's columns. protected void sublayout(int width, int height) { // set the size and position of each field. int fontHeight = Font.getDefault().getHeight(); int preferredWidth = getPreferredWidth(); // start with the Bitmap Field of the priority icon Field field = getField(0); layoutChild(field, 146,80); setPositionChild(field, 0, 0); // set the task name label field field = getField(1); layoutChild(field, preferredWidth - 16, fontHeight + 1); setPositionChild(field, 149, 3); // set the list name label field field = getField(2); layoutChild(field, 150, fontHeight + 1); setPositionChild(field, 149, fontHeight + 6); setExtent(360, 480); } // The preferred width of a row is defined by the list renderer. public int getPreferredWidth() { return listnew.getWidth(); } // The preferred height of a row is the "row height" as defined in the // enclosing list. public int getPreferredHeight() { return listnew.getRowHeight(); } } public Object get(ListField listField, int index) { // TODO Auto-generated method stub return null; } public int getPreferredWidth(ListField listField) { return 0; } public int indexOfList(ListField listField, String prefix, int start) { // TODO Auto-generated method stub return 0; } }

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• adding onTap method on path direction between 2 point

  - by idham

  I have a problem in my Android application I have a path direction on my application and I want to add an onTap method for the path, so if I touch that path my application will display information with alert dialog. This my activity code: hasilrute hr = new hasilrute(); for (int k = 0;k < hr.r2.size(); k++){ String angkot = hr.r2.get(i).angkot; Cursor c = db.getLatLong(hasilrute.a); Cursor cc = db.getLatLong(hasilrute.b); String x = (c.getString(3)+","+c.getString(2)); String xx = (cc.getString(3)+","+cc.getString(2)); String pairs[] = getDirectionData(x, xx); String[] lnglat = pairs[0].split(","); GeoPoint point = new GeoPoint((int) (Double.parseDouble(lnglat[1]) *1E6),(int)(Double.parseDouble(lnglat[0]) * 1E6)); GeoPoint gp1; GeoPoint gp2 = point; for (int j = 1;j < pairs.length; j++){ lnglat = pairs[j].split(","); gp1 = gp2; gp2 = new GeoPoint((int) (Double.parseDouble(lnglat[1]) *1E6),(int) (Double.parseDouble(lnglat[0]) * 1E6)); mapView.getOverlays().add(new jalur(gp1, gp2,angkot)); } } and it's my jalur.java code public class jalur extends Overlay { private GeoPoint gp1; private GeoPoint gp2; private String angkot; private Context mContext; public jalur(GeoPoint gp1, GeoPoint gp2, String angkot){ this.gp1 = gp1; this.gp2 = gp2; this.angkot = angkot; } @Override public boolean draw(Canvas canvas, MapView mapView, boolean shadow, long when){ Projection projection = mapView.getProjection(); if (shadow == false){ if (angkot.equals("Cimahi-Leuwipanjang")){ Paint paint = new Paint(); paint.setAntiAlias(true); Point point = new Point(); projection.toPixels(gp1,point); Point point2 = new Point(); projection.toPixels(gp2, point2); paint.setColor(Color.rgb(118,171,127)); paint.setStrokeWidth(2); canvas.drawLine((float) point.x, (float) point.y, (float) point2.x, (float) point2.y, paint); }if (angkot.equals("Cimahi-Cangkorah")){ Paint paint = new Paint(); paint.setAntiAlias(true); Point point = new Point(); projection.toPixels(gp1,point); Point point2 = new Point(); projection.toPixels(gp2, point2); paint.setColor(Color.rgb(67,204,255)); paint.setStrokeWidth(2); canvas.drawLine((float) point.x, (float) point.y, (float) point2.x, (float) point2.y, paint); }if (angkot.equals("Cimindi-Cipatik")){ Paint paint = new Paint(); paint.setAntiAlias(true); Point point = new Point(); projection.toPixels(gp1,point); Point point2 = new Point(); projection.toPixels(gp2, point2); paint.setColor(Color.rgb(42,82,0)); paint.setStrokeWidth(2); canvas.drawLine((float) point.x, (float) point.y, (float) point2.x, (float) point2.y, paint); }if (angkot.equals("Jalan Kaki")){ Paint paint = new Paint(); paint.setAntiAlias(true); Point point = new Point(); projection.toPixels(gp1,point); Point point2 = new Point(); projection.toPixels(gp2, point2); paint.setColor(Color.rgb(0,0,0)); paint.setStrokeWidth(2); canvas.drawLine((float) point.x, (float) point.y, (float) point2.x, (float) point2.y, paint); }if (angkot.equals("Cimahi-Padalarang")){ Paint paint = new Paint(); paint.setAntiAlias(true); Point point = new Point(); projection.toPixels(gp1,point); Point point2 = new Point(); projection.toPixels(gp2, point2); paint.setColor(Color.rgb(229,66,66)); paint.setStrokeWidth(2); canvas.drawLine((float) point.x, (float) point.y, (float) point2.x, (float) point2.y, paint); } if (angkot.equals("Pasantren-Sarijadi")){ Paint paint = new Paint(); paint.setAntiAlias(true); Point point = new Point(); projection.toPixels(gp1,point); Point point2 = new Point(); projection.toPixels(gp2, point2); paint.setColor(Color.rgb(4,39,255)); paint.setStrokeWidth(2); canvas.drawLine((float) point.x, (float) point.y, (float) point2.x, (float) point2.y, paint); }if (angkot.equals("Cimahi-Parongpong")){ Paint paint = new Paint(); paint.setAntiAlias(true); Point point = new Point(); projection.toPixels(gp1,point); Point point2 = new Point(); projection.toPixels(gp2, point2); paint.setColor(Color.rgb(141,0,200)); paint.setStrokeWidth(2); canvas.drawLine((float) point.x, (float) point.y, (float) point2.x, (float) point2.y, paint); }if (angkot.equals("Cimahi-Cibeber")){ Paint paint = new Paint(); paint.setAntiAlias(true); Point point = new Point(); projection.toPixels(gp1,point); Point point2 = new Point(); projection.toPixels(gp2, point2); paint.setColor(Color.rgb(255,246,0)); paint.setStrokeWidth(2); canvas.drawLine((float) point.x, (float) point.y, (float) point2.x, (float) point2.y, paint); }if (angkot.equals("Cimahi-Cimindi")){ Paint paint = new Paint(); paint.setAntiAlias(true); Point point = new Point(); projection.toPixels(gp1,point); Point point2 = new Point(); projection.toPixels(gp2, point2); paint.setColor(Color.rgb(220,145,251)); paint.setStrokeWidth(2); canvas.drawLine((float) point.x, (float) point.y, (float) point2.x, (float) point2.y, paint); }if (angkot.equals("Cimahi-Contong")){ Paint paint = new Paint(); paint.setAntiAlias(true); Point point = new Point(); projection.toPixels(gp1,point); Point point2 = new Point(); projection.toPixels(gp2, point2); paint.setColor(Color.rgb(242,138,138)); paint.setStrokeWidth(2); canvas.drawLine((float) point.x, (float) point.y, (float) point2.x, (float) point2.y, paint); }if (angkot.equals("Cimahi-Soreang")){ Paint paint = new Paint(); paint.setAntiAlias(true); Point point = new Point(); projection.toPixels(gp1,point); Point point2 = new Point(); projection.toPixels(gp2, point2); paint.setColor(Color.rgb(0,255,78)); paint.setStrokeWidth(2); canvas.drawLine((float) point.x, (float) point.y, (float) point2.x, (float) point2.y, paint); }if (angkot.equals("Cimahi-Batujajar")){ Paint paint = new Paint(); paint.setAntiAlias(true); Point point = new Point(); projection.toPixels(gp1,point); Point point2 = new Point(); projection.toPixels(gp2, point2); paint.setColor(Color.rgb(137,217,51)); paint.setStrokeWidth(2); canvas.drawLine((float) point.x, (float) point.y, (float) point2.x, (float) point2.y, paint); } } return super.draw(canvas, mapView, shadow, when); } @Override public void draw(Canvas canvas, MapView mapView, boolean shadow){ super.draw(canvas, mapView, shadow); } } thanks for your attention :)

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• Set postion in customized list field in blackberry

  - by arunabha

  I want three list field items to be displayed, from bottom to top. I am able to display three list field items, but they display from top to bottom. I have tried setting the position, but it isn't working. import java.util.Vector; import net.rim.device.api.system.Bitmap; import net.rim.device.api.system.Display; import net.rim.device.api.ui.ContextMenu; import net.rim.device.api.ui.DrawStyle; import net.rim.device.api.ui.Field; import net.rim.device.api.ui.Font; import net.rim.device.api.ui.Graphics; import net.rim.device.api.ui.Manager; import net.rim.device.api.ui.MenuItem; import net.rim.device.api.ui.UiApplication; import net.rim.device.api.ui.component.BitmapField; import net.rim.device.api.ui.component.Dialog; import net.rim.device.api.ui.component.LabelField; import net.rim.device.api.ui.component.ListField; import net.rim.device.api.ui.component.ListFieldCallback; import net.rim.device.api.ui.component.NullField; import net.rim.device.api.ui.container.FullScreen; import net.rim.device.api.ui.container.MainScreen; import net.rim.device.api.util.Arrays; import net.rim.device.api.ui.component.ListField; /** * @author Jason Emerick */ public class TaskListField extends UiApplication { //statics ------------------------------------------------------------------ public static void main(String[] args) { TaskListField theApp = new TaskListField(); theApp.enterEventDispatcher(); } public TaskListField() { pushScreen(new TaskList()); } } /*class List extends FullScreen { TaskList tl; List(){ super(); TaskList tl=new TaskList(); } }*/ class TaskList extends MainScreen implements ListFieldCallback { private Vector rows; private Bitmap p1; private Bitmap p2; private Bitmap p3; String Task; ListField listnew=new ListField(); public TaskList() { super(); listnew.setRowHeight(50); //setEmptyString("Hooray, no tasks here!", DrawStyle.HCENTER); listnew.setCallback(this); p1 = Bitmap.getBitmapResource("1.png"); p2 = Bitmap.getBitmapResource("2.png"); p3 = Bitmap.getBitmapResource("3.png"); rows = new Vector(); for (int x = 0; x < 3; x++) { TableRowManager row = new TableRowManager(); if (x== 0) { Task="On Air Now"; } if (x== 1) { Task="Music Channel"; } if (x==2) { Task="News Channel"; } // SET THE PRIORITY BITMAP FIELD // if high priority, display p1 bitmap if (x % 2 == 0) { row.add(new BitmapField(p1)); } // if priority is 2, set p2 bitmap else if (x % 3 == 0) { row.add(new BitmapField(p2)); } // if priority is 3, set p3 bitmap else { row.add(new BitmapField(p3)); } // SET THE TASK NAME LABELFIELD // if overdue, bold/underline LabelField task = new LabelField(Task, DrawStyle.ELLIPSIS); // if due today, bold if (x % 2 == 0) { task.setFont(Font.getDefault().derive( Font.BOLD)); } else { task.setFont(Font.getDefault().derive(Font.BOLD)); } row.add(task); LabelField task1 = new LabelField("Now Playing" + String.valueOf(x), DrawStyle.ELLIPSIS); // if due today, bold /* if (x % 2 == 0) { task.setFont(Font.getDefault().derive( Font.BOLD)); } else { task.setFont(Font.getDefault().derive(Font.BOLD)); }*/ Font myFont = Font.getDefault().derive(Font.PLAIN, 12); task1.setFont(myFont); row.add(task1); // SET THE DUE DATE/TIME row.add(new LabelField("", DrawStyle.ELLIPSIS | LabelField.USE_ALL_WIDTH | DrawStyle.RIGHT) { protected void paint(Graphics graphics) { graphics.setColor(0x00878787); super.paint(graphics); } }); rows.addElement(row); } listnew.setSize(rows.size()); this.add(listnew); } // ListFieldCallback Implementation public void drawListRow(ListField listField, Graphics g, int index, int y, int width) { //TaskList list =(TaskListField) listnew; TableRowManager rowManager = (TableRowManager)rows .elementAt(index); rowManager.drawRow(g, 0, y, width, listnew.getRowHeight()); } private class TableRowManager extends Manager { public TableRowManager() { super(0); } // Causes the fields within this row manager to be layed out then // painted. public void drawRow(Graphics g, int x, int y, int width, int height) { // Arrange the cell fields within this row manager. layout(0, 1); // Place this row manager within its enclosing list. setPosition(x,y); // Apply a translating/clipping transformation to the graphics // context so that this row paints in the right area. g.pushRegion(getExtent()); // Paint this manager's controlled fields. subpaint(g); g.setColor(0x00CACACA); g.drawLine(0, 0, getPreferredWidth(), 0); // Restore the graphics context. g.popContext(); } // Arrages this manager's controlled fields from left to right within // the enclosing table's columns. protected void sublayout(int width, int height) { // set the size and position of each field. int fontHeight = Font.getDefault().getHeight(); int preferredWidth = getPreferredWidth(); // start with the Bitmap Field of the priority icon /* Field field = getField(0); layoutChild(field, 0, 0); setPositionChild(field, 150, 300);*/ // set the task name label field /* field = getField(1); layoutChild(field, preferredWidth - 16, fontHeight + 1); setPositionChild(field, 34, 3); // set the list name label field field = getField(2); layoutChild(field, 150, fontHeight + 1); setPositionChild(field, 34, fontHeight + 6);*/ // set the due time name label field /* field = getField(3); layoutChild(field, 150, fontHeight + 1); setPositionChild(field,4,340);*/ /* layoutChild(listnew, preferredWidth, fontHeight); setPositionChild(listnew, 3, 396);*/ setExtent(360, 480); } // The preferred width of a row is defined by the list renderer. public int getPreferredWidth() { return getWidth(); } // The preferred height of a row is the "row height" as defined in the // enclosing list. public int getPreferredHeight() { return listnew.getRowHeight(); } } public Object get(ListField listField, int index) { // TODO Auto-generated method stub return null; } public int getPreferredWidth(ListField listField) { // TODO Auto-generated method stub return 0; } public int indexOfList(ListField listField, String prefix, int start) { // TODO Auto-generated method stub return 0; } }

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• Using javascript to limit survey choices to three unique values

  - by leanne

  I'm required to use a limited survey application, and have to adapt the provided code to meet more advanced functionality. I need to create a weighted ranking question, so users can select their top three choices and the data will go into the survey application and be accessible in the survey reports. The application only supports 2 types of questions (text fill & multiple choice) but I can alter the code, as long as it still sends the form data back to the survey application. The code is set up so it will show a drop-down menu of 0-3 for each option. Now I want to limit the user's choices so they can only select one "1" "2" or "3", three choices total. Ideally, if the user already had "2" selected for one option and they tried to select it for another option, it would set the first "2" as "0" or blank. Is this possible to do with javascript? If so, does anyone know of a site that might show code like this, or provide similar enough examples that I could adapt it? Current code here: <html> <head><title>Survey</title></head> <!-- Changes - remove br to put dropdown next to text for each item. Switch text & dropdown order for each item. - add comments to separate each question - removed blue title font - add instructions Goals - limit choices to one 1 one 2 and one 3, three choices total. --> <link href="---" rel="stylesheet" type="text/css"> <body bgcolor="#3c76a3"> <!-- TRANSITIONAL DIALOG BOX --> <table border="0" align="center" cellpadding="0" cellspacing="0" style="background-attachment: scroll; background-color: #3c76a3; background-repeat: no-repeat; background-position: left top;" bgcolor="#3c76a3" topmargin="0" marginwidth="0" marginheight="0" width="100%" height="100%"> <tr> <td> <table border="0" align="center" cellpadding="0" cellspacing="0" id="survey"> <tr> <td><p>&nbsp;</p> <!-- HEADER END --> <!-- FORM START TAG --><form name="survey" action="---" method="POST"> <FONT face="Verdana, Arial, Helvetica, sans-serif"> <b>survey</b><hr> <!-- 1 --> <input type=hidden name="Buy R.J. a DeLorean_multiple_answers" value="one"> <font size=2><select name="Buy R.J. a DeLorean" SIZE=1> <option value=""> <option value="0">0 <option value="1">1 <option value="2">2 <option value="3">3 </select></font> <input type="hidden" name="Buy R.J. a DeLorean_help" value=""> <b><font size=2>Buy R.J. a DeLorean</font></b> <hr size=1> <!-- 2 --> <input type=hidden name="Fill Lisa's office with marshmallows._multiple_answers" value="one"> <font size=2><select name="Fill Lisa's office with marshmallows." SIZE=1> <option value=""> <option value="0">0 <option value="1">1 <option value="2">2 <option value="3">3 </select></font> <input type="hidden" name="Fill Lisa's office with marshmallows._help" value=""> <b><font size=2>Fill Lisa's office with marshmallows.</font></b> <hr size=1> <!-- 3 --> <input type=hidden name="Install a beer fridge in everyone's filing cabinets._multiple_answers" value="one"> <font size=2><select name="Install a beer fridge in everyone's filing cabinets." SIZE=1> <option value=""> <option value="0">0 <option value="1">1 <option value="2">2 <option value="3">3 </select></font> <input type="hidden" name="Install a beer fridge in everyone's filing cabinets._help" value=""> <b><font size=2>Install a beer fridge in everyone's filing cabinets.</font></b> <hr size=1> <!-- 4 --> <input type=hidden name="Buy a company Cessna_multiple_answers" value="one"> <font size=2><select name="Buy a company Cessna" SIZE=1> <option value=""> <option value="0">0 <option value="1">1 <option value="2">2 <option value="3">3 </select></font> <input type="hidden" name="Buy a company Cessna_help" value=""> <b><font size=2>Buy a company Cessna</font></b><br> <hr size=1> <!-- 5 --> <input type=hidden name="Replace Conf2's chairs with miniature ponies._multiple_answers" value="one"> <font size=2><select name="Replace Conf2's chairs with miniature ponies." SIZE=1> <option value=""> <option value="0">0 <option value="1">1 <option value="2">2 <option value="3">3 </select></font> <input type="hidden" name="Replace Conf2's chairs with miniature ponies._help" value=""> <b><font size=2>Replace Conf2's chairs with miniature ponies.</font></b> <hr size=1> <input type="hidden" name="question_names" value="{Buy R.J. a DeLorean} {Fill Lisa's office with marshmallows.} {Install a beer fridge in everyone's filing cabinets.} {Buy a company Cessna} {Replace Conf2's chairs with miniature ponies.}"> <p align="right"><input type="image" BORDER=0 title="Save Changes" alt="Save Changes" src="---" name="button_save_changes"> <input type="hidden" name="showconfirm" value="T"> <input type="hidden" name="showresults" value="F"> <input type="hidden" name="preventdupesmemberid" value="T"> <input type="hidden" name="preventdupesip" value="F"> <input type="hidden" name="numberquestions" value="F"> <input type="hidden" name="destinationurl" value=""> <input type="hidden" name="original_survey_id" value="62"> <!-- FORM END TAG --></form> <!-- FOOTER START --> </td> </tr> </table> </td> </tr> </table> <!-- END HEADER --> </body> </html>

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• File using .net sockets, transferring problem

  - by Sergei

  I have a client and server, client sending file to server. When i transfer files on my computer(in local) everything is ok(try to sen file over 700mb). When i try to sent file use Internet to my friend in the end of sending appears error on server "Input string is not in correct format".This error appears in this expression fSize = Convert::ToUInt64(tokenes[0]); - and i don't mind wht it's appear. File should be transfered and wait other transferring ps: sorry for too much code, but i want to find solution private: void CreateServer() { try{ IPAddress ^ipAddres = IPAddress::Parse(ipAdress); listener = gcnew System::Net::Sockets::TcpListener(ipAddres, port); listener->Start(); clientsocket =listener->AcceptSocket(); bool keepalive = true; array<wchar_t,1> ^split = gcnew array<wchar_t>(1){ '\0' }; array<wchar_t,1> ^split2 = gcnew array<wchar_t>(1){ '|' }; statusBar1->Text = "Connected" ; // while (keepalive) { array<Byte>^ size1 = gcnew array<Byte>(1024); clientsocket->Receive(size1); System::String ^notSplited = System::Text::Encoding::GetEncoding(1251)->GetString(size1); array<String^> ^ tokenes = notSplited->Split(split2); System::String ^fileName = tokenes[1]->ToString(); statusBar1->Text = "Receiving file" ; unsigned long fSize = 0; //IN THIS EXPRESSIN APPEARS ERROR fSize = Convert::ToUInt64(tokenes[0]); if (!Directory::Exists("Received")) Directory::CreateDirectory("Received"); System::String ^path = "Received\\"+ fileName; while (File::Exists(path)) { int dotPos = path->LastIndexOf('.'); if (dotPos == -1) { path += "[1]"; } else { path = path->Insert(dotPos, "[1]"); } } FileStream ^fs = gcnew FileStream(path, FileMode::CreateNew, FileAccess::Write); BinaryWriter ^f = gcnew BinaryWriter(fs); //bytes received unsigned long processed = 0; pBarFilesTr->Visible = true; pBarFilesTr->Minimum = 0; pBarFilesTr->Maximum = (int)fSize; // Set the initial value of the ProgressBar. pBarFilesTr->Value = 0; pBarFilesTr->Step = 1024; //loop for receive file array<Byte>^ buffer = gcnew array<Byte>(1024); while (processed < fSize) { if ((fSize - processed) < 1024) { int bytes ; array<Byte>^ buf = gcnew array<Byte>(1024); bytes = clientsocket->Receive(buf); if (bytes != 0) { f->Write(buf, 0, bytes); processed = processed + (unsigned long)bytes; pBarFilesTr->PerformStep(); } break; } else { int bytes = clientsocket->Receive(buffer); if (bytes != 0) { f->Write(buffer, 0, 1024); processed = processed + 1024; pBarFilesTr->PerformStep(); } else break; } } statusBar1->Text = "File was received" ; array<Byte>^ buf = gcnew array<Byte>(1); clientsocket->Send(buf,buf->Length,SocketFlags::None); f->Close(); fs->Close(); SystemSounds::Beep->Play(); } }catch(System::Net::Sockets::SocketException ^es) { MessageBox::Show(es->ToString()); } catch(System::Exception ^es) { MessageBox::Show(es->ToString()); } } private: void CreateClient() { clientsock = gcnew System::Net::Sockets::TcpClient(ipAdress, port); ns = clientsock->GetStream(); sr = gcnew StreamReader(ns); statusBar1->Text = "Connected" ; } private:void Send() { try{ OpenFileDialog ^openFileDialog1 = gcnew OpenFileDialog(); System::String ^filePath = ""; System::String ^fileName = ""; //file choose dialog if (openFileDialog1->ShowDialog() == System::Windows::Forms::DialogResult::OK) { filePath = openFileDialog1->FileName; fileName = openFileDialog1->SafeFileName; } else { MessageBox::Show("You must select a file", "Error", MessageBoxButtons::OK, MessageBoxIcon::Exclamation); return; } statusBar1->Text = "Sending file" ; NetworkStream ^writerStream = clientsock->GetStream(); System::Runtime::Serialization::Formatters::Binary::BinaryFormatter ^format = gcnew System::Runtime::Serialization::Formatters::Binary::BinaryFormatter(); array<Byte>^ buffer = gcnew array<Byte>(1024); FileStream ^fs = gcnew FileStream(filePath, FileMode::Open); BinaryReader ^br = gcnew BinaryReader(fs); //file size unsigned long fSize = (unsigned long)fs->Length; //transfer file size + name bFSize = Encoding::GetEncoding(1251)->GetBytes(Convert::ToString(fs->Length+"|"+fileName+"|")); writerStream->Write(bFSize, 0, bFSize->Length); //status bar pBarFilesTr->Visible = true; pBarFilesTr->Minimum = 0; pBarFilesTr->Maximum = (int)fSize; pBarFilesTr->Value = 0; // Set the initial value of the ProgressBar. pBarFilesTr->Step = 1024; //bytes transfered unsigned long processed = 0; int bytes = 1024; //loop for transfer while (processed < fSize) { if ((fSize - processed) < 1024) { bytes = (int)(fSize - processed); array<Byte>^ buf = gcnew array<Byte>(bytes); br->Read(buf, 0, bytes); writerStream->Write(buf, 0, buf->Length); pBarFilesTr->PerformStep(); processed = processed + (unsigned long)bytes; break; } else { br->Read(buffer, 0, 1024); writerStream->Write(buffer, 0, buffer->Length); pBarFilesTr->PerformStep(); processed = processed + 1024; } } array<Byte>^ bufsss = gcnew array<Byte>(100); writerStream->Read(bufsss,0,bufsss->Length); statusBar1->Text = "File was sent" ; btnSend->Enabled = true; fs->Close(); br->Close(); SystemSounds::Beep->Play(); newThread->Abort(); } catch(System::Net::Sockets::SocketException ^es) { MessageBox::Show(es->ToString()); } } UPDATE: ok, i can add checking if clientsocket->Receive(size1); equal zero, but why he begin receiving data again , in the ending of receiving. UPDATE:After adding this checking problem remains. AND WIN RAR SAY TO OPENING ARCHIVE - unexpected end of file! UPDATE:http://img153.imageshack.us/img153/3760/erorr.gif I think it continue receiving some bytes from client(that remains in the stream), but why existes cicle while (processed < fSize)

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• File using sockets .net, tranfering problem

  - by Sergei

  I have a client and server, client sending file to server. When i transfer files on my computer(in local) everything is ok(try to sen file over 700mb). When i try to sent file use Internet to my friend in the end of sending appears error on server "Input string is not in correct format".This error appears in this expression fSize = Convert::ToUInt64(tokenes[0]); - and i don't mind wht it's appear. File should be transfered and wait other transferring ps: sorry for too much code, but i want to find solution private: void CreateServer() { try{ IPAddress ^ipAddres = IPAddress::Parse(ipAdress); listener = gcnew System::Net::Sockets::TcpListener(ipAddres, port); listener->Start(); clientsocket =listener->AcceptSocket(); bool keepalive = true; array<wchar_t,1> ^split = gcnew array<wchar_t>(1){ '\0' }; array<wchar_t,1> ^split2 = gcnew array<wchar_t>(1){ '|' }; statusBar1->Text = "Connected" ; // while (keepalive) { array<Byte>^ size1 = gcnew array<Byte>(1024); clientsocket->Receive(size1); System::String ^notSplited = System::Text::Encoding::GetEncoding(1251)->GetString(size1); array<String^> ^ tokenes = notSplited->Split(split2); System::String ^fileName = tokenes[1]->ToString(); statusBar1->Text = "Receiving file" ; unsigned long fSize = 0; //IN THIS EXPRESSIN APPEARS ERROR fSize = Convert::ToUInt64(tokenes[0]); if (!Directory::Exists("Received")) Directory::CreateDirectory("Received"); System::String ^path = "Received\\"+ fileName; while (File::Exists(path)) { int dotPos = path->LastIndexOf('.'); if (dotPos == -1) { path += "[1]"; } else { path = path->Insert(dotPos, "[1]"); } } FileStream ^fs = gcnew FileStream(path, FileMode::CreateNew, FileAccess::Write); BinaryWriter ^f = gcnew BinaryWriter(fs); //bytes received unsigned long processed = 0; pBarFilesTr->Visible = true; pBarFilesTr->Minimum = 0; pBarFilesTr->Maximum = (int)fSize; // Set the initial value of the ProgressBar. pBarFilesTr->Value = 0; pBarFilesTr->Step = 1024; //loop for receive file array<Byte>^ buffer = gcnew array<Byte>(1024); while (processed < fSize) { if ((fSize - processed) < 1024) { int bytes ; array<Byte>^ buf = gcnew array<Byte>(1024); bytes = clientsocket->Receive(buf); if (bytes != 0) { f->Write(buf, 0, bytes); processed = processed + (unsigned long)bytes; pBarFilesTr->PerformStep(); } break; } else { int bytes = clientsocket->Receive(buffer); if (bytes != 0) { f->Write(buffer, 0, 1024); processed = processed + 1024; pBarFilesTr->PerformStep(); } else break; } } statusBar1->Text = "File was received" ; array<Byte>^ buf = gcnew array<Byte>(1); clientsocket->Send(buf,buf->Length,SocketFlags::None); f->Close(); fs->Close(); SystemSounds::Beep->Play(); } }catch(System::Net::Sockets::SocketException ^es) { MessageBox::Show(es->ToString()); } catch(System::Exception ^es) { MessageBox::Show(es->ToString()); } } private: void CreateClient() { clientsock = gcnew System::Net::Sockets::TcpClient(ipAdress, port); ns = clientsock->GetStream(); sr = gcnew StreamReader(ns); statusBar1->Text = "Connected" ; } private:void Send() { try{ OpenFileDialog ^openFileDialog1 = gcnew OpenFileDialog(); System::String ^filePath = ""; System::String ^fileName = ""; //file choose dialog if (openFileDialog1->ShowDialog() == System::Windows::Forms::DialogResult::OK) { filePath = openFileDialog1->FileName; fileName = openFileDialog1->SafeFileName; } else { MessageBox::Show("You must select a file", "Error", MessageBoxButtons::OK, MessageBoxIcon::Exclamation); return; } statusBar1->Text = "Sending file" ; NetworkStream ^writerStream = clientsock->GetStream(); System::Runtime::Serialization::Formatters::Binary::BinaryFormatter ^format = gcnew System::Runtime::Serialization::Formatters::Binary::BinaryFormatter(); array<Byte>^ buffer = gcnew array<Byte>(1024); FileStream ^fs = gcnew FileStream(filePath, FileMode::Open); BinaryReader ^br = gcnew BinaryReader(fs); //file size unsigned long fSize = (unsigned long)fs->Length; //transfer file size + name bFSize = Encoding::GetEncoding(1251)->GetBytes(Convert::ToString(fs->Length+"|"+fileName+"|")); writerStream->Write(bFSize, 0, bFSize->Length); //status bar pBarFilesTr->Visible = true; pBarFilesTr->Minimum = 0; pBarFilesTr->Maximum = (int)fSize; pBarFilesTr->Value = 0; // Set the initial value of the ProgressBar. pBarFilesTr->Step = 1024; //bytes transfered unsigned long processed = 0; int bytes = 1024; //loop for transfer while (processed < fSize) { if ((fSize - processed) < 1024) { bytes = (int)(fSize - processed); array<Byte>^ buf = gcnew array<Byte>(bytes); br->Read(buf, 0, bytes); writerStream->Write(buf, 0, buf->Length); pBarFilesTr->PerformStep(); processed = processed + (unsigned long)bytes; break; } else { br->Read(buffer, 0, 1024); writerStream->Write(buffer, 0, buffer->Length); pBarFilesTr->PerformStep(); processed = processed + 1024; } } array<Byte>^ bufsss = gcnew array<Byte>(100); writerStream->Read(bufsss,0,bufsss->Length); statusBar1->Text = "File was sent" ; btnSend->Enabled = true; fs->Close(); br->Close(); SystemSounds::Beep->Play(); newThread->Abort(); } catch(System::Net::Sockets::SocketException ^es) { MessageBox::Show(es->ToString()); } }

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