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  • How do I link ASP.NET membership/role users to tables in db?

    - by SnapConfig.com
    I am going to use forms authentication but I want to be able to link the asp.net users to some tables in the db for example If I have a class and students (as roles) I'll have a class students table. I'm planning to put in a Users table containing a simple int userid and ASP.NET username in there and put userid wherever I want to link the users. Does that sound good? any other options of modeling this? it does sound a bit convoluted?

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  • How do I make a rectangle move in an image?

    - by alicedimarco
    Basically I have an image loaded, and when I click a portion of the image, a rectangle (with no fill) shows up. If I click another part of the image again, that rectangle will show up once more. With each click, the same rectangle should appear. So far I have this code, now I don't know how to make the image appear. My image from my file directory. I have already made the code to get the image from my file directory. import java.awt.Color; import java.awt.Graphics; import java.awt.event.MouseEvent; import java.awt.event.MouseListener; import javax.swing.JFrame; import javax.swing.JOptionPane; import javax.swing.JPanel; public class MP2 extends JPanel implements MouseListener{ JFrame frame; JPanel panel; int x = 0; int y = 0; String input; public MP2(){ } public static void main(String[] args){ JFrame frame = new JFrame(); MP2 panel = new MP2(); panel.addMouseListener(panel); frame.add(panel); frame.setSize(200,200); frame.setVisible(true); } public void mouseClicked(MouseEvent event) { // TODO Auto-generated method stub this.x = event.getX(); this.y = event.getY(); this.repaint(); input = JOptionPane.showInputDialog("Something pops out"); System.out.println(input); } public void mouseEntered(MouseEvent arg0) { // TODO Auto-generated method stub } public void mouseExited(MouseEvent arg0) { // TODO Auto-generated method stub } public void mousePressed(MouseEvent arg0) { // TODO Auto-generated method stub } public void mouseReleased(MouseEvent arg0) { // TODO Auto-generated method stub } public void paintComponent(Graphics g){ super.paintComponent(g); // this.setBackground(Color.white); *Sets the bg color of the panel g.setColor(new Color(255,0,0)); g.drawRect(x, y, 100, 100); } }

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  • Why use buffers to read/write Streams

    - by James Hay
    Following reading various questions on reading and writing Streams, all the various answers define something like this as the correct way to do it: private void CopyStream(Stream input, Stream output) { byte[] buffer = new byte[16 * 1024]; int read; while ((read = input.Read(buffer, 0, buffer.Length)) > 0) { output.Write(buffer, 0, read); } } Two questions: Why read and write in these smaller chunks? What is the significance of the buffer size used?

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  • text from a file turned into a variable?

    - by b3y4z1d
    If I made a program that stores strings on a text file using the "list"-function(#include ), and then I want to copy all of the text from that file and call it something(so I can tell the program to type in all of the text I copied somewhere by using that one variable to refer to the text), do I use a string,double,int or what do I declare that chunk of text as? I'm making the program using c++ in a simple console application.

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  • number of elements in a static array of a predefined size

    - by cppb
    I have an array like this: int a[100]; I am filling only the first 4 elements in this array: a[0] = 1; a[1] = 2; a[2] = 3; a[3] = 4; When I do sizeof(a)/sizeof(a[0]) it returns 100. Is there a way I can get number of elements to which I have assinged a value and thus filtering out the remaining 96 unassigned elements? thanks

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  • MySQL: count enumerated values?

    - by John Isaacks
    If my table looks like this: daily_individual_tracking', 'CREATE TABLE `daily_individual_tracking` ( `daily_individual_tracking_id` int(10) unsigned NOT NULL auto_increment, `daily_individual_tracking_date` date NOT NULL default ''0000-00-00'', `sales` enum(''no'',''yes'') NOT NULL COMMENT ''no'', `repairs` enum(''no'',''yes'') NOT NULL COMMENT ''no'', `shipping` enum(''no'',''yes'') NOT NULL COMMENT ''no'', PRIMARY KEY (`daily_individual_tracking_id`) ) ENGINE=InnoDB AUTO_INCREMENT=4 DEFAULT CHARSET=latin1 basically the fields can be either yes or no. How can I count how many yes's their are for each column over a date range? Thanks!!

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  • Windows API Programing....

    - by vs4vijay
    Hello There... Its me Vijay.. I m Trying to make a CrossHair(some kind of cursor) On The Screen while running a Game (Counter Strike)... so i did this... ############################# #include<iostream.h> #include<windows.h> #include<conio.h> #include<dos.h> #include<stdlib.h> #include<process.h> #include <time.h> int main() { HANDLE hl = OpenProcess(PROCESS_ALL_ACCESS,TRUE,pid); // Here pid is the process ID of the Game... HDC hDC = GetDC(NULL); //Here i pass NULL for Entire Screen... HBRUSH hb=CreateSolidBrush(RGB(0,255,255)); SelectObject(hDC,hb); POINT p; while(!kbhit()) { int x=1360/2,y=768/2; MoveToEx(hDC,x-20,y,&p); LineTo(hDC,x+20,y); SetPixel(hDC,x,y,RGB(255,0,0)); SetPixel(hDC,x-1,y-1,RGB(255,0,0)); SetPixel(hDC,x-1,y+1,RGB(255,0,0)); SetPixel(hDC,x+1,y+1,RGB(255,0,0)); SetPixel(hDC,x+1,y-1,RGB(255,0,0)); MoveToEx(hDC,x,y-20,&p); LineTo(hDC,x,y+20); } cin.get(); return 0; } #################################### it works fine....at desktop i see crosshair...but my problem is that when i run game...the cross here got disappeared.... so i think i did not handle the process of game... so i pass the HANDLE to the GetDC(hl)... But GetDC take only HWND(Handle To Window)... so i typecast it like this... HWND hl = (HWND)OpenProcess(PROCESS_ALL_ACCESS,TRUE,pid); and passed hl to the GetDC(hl)... but it doesnt work...Whats wrong with the code... plz tell me how do i make a simple shape at the screen on a process or game... PS : (My Compiler Is DevCPP and OS WinXP SP3....)

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  • Java: Making concurrent MySQL queries from multiple clients synchronised

    - by Misha Gale
    I work at a gaming cybercafe, and we've got a system here (smartlaunch) which keeps track of game licenses. I've written a program which interfaces with this system (actually, with it's backend MySQL database). The program is meant to be run on a client PC and (1) query the database to select an unused license from the pool available, then (2) mark this license as in use by the client PC. The problem is, I've got a concurrency bug. The program is meant to be launched simultaneously on multiple machines, and when this happens, some machines often try and acquire the same license. I think that this is because steps (1) and (2) are not synchronised, i.e. one program determines that license #5 is available and selects it, but before it can mark #5 as in use another copy of the program on another PC tries to grab that same license. I've tried to solve this problem by using transactions and table locking, but it doesn't seem to make any difference - Am I doing this right? Here follows the code in question: public LicenseKey Acquire() throws SmartLaunchException, SQLException { Connection conn = SmartLaunchDB.getConnection(); int PCID = SmartLaunchDB.getCurrentPCID(); conn.createStatement().execute("LOCK TABLE `licensekeys` WRITE"); String sql = "SELECT * FROM `licensekeys` WHERE `InUseByPC` = 0 AND LicenseSetupID = ? ORDER BY `ID` DESC LIMIT 1"; PreparedStatement statement = conn.prepareStatement(sql); statement.setInt(1, this.id); ResultSet results = statement.executeQuery(); if (results.next()) { int licenseID = results.getInt("ID"); sql = "UPDATE `licensekeys` SET `InUseByPC` = ? WHERE `ID` = ?"; statement = conn.prepareStatement(sql); statement.setInt(1, PCID); statement.setInt(2, licenseID); statement.executeUpdate(); statement.close(); conn.commit(); conn.createStatement().execute("UNLOCK TABLES"); return new LicenseKey(results.getInt("ID"), this, results.getString("LicenseKey"), results.getInt("LicenseKeyType")); } else { throw new SmartLaunchException("All licenses of type " + this.name + "are in use"); } }

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  • struct size is different from typedef version?

    - by samoz
    I have the following struct declaration and typedef in my code: struct blockHeaderStruct { bool allocated; unsigned int length; }; typedef struct blockHeaderStruct blockHeader; When I do sizeof(blockheader), I get the value of 4 bytes back, but when I do sizeof(blockHeaderStruct), I get 8 bytes. Why is this happening? Why am I not getting 5 back instead?

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  • How to declare ASP classic constants to a data type?

    - by Guy
    In asp classic and vbscript, you can declare a Const with a hexidecial value, and a date type value: Const C_LIGHTCYAN = &hCCFFEE Const C_STARTDATE = #1 JAN 2000# But how can I declare currency, single or doubles data types? Const C_LONG = 1024 '# I want this to be a LONG, not an INT! I'm sure I've seen something like Const C_LNG = L12345 or some other prefix/suffix combination for longs or doubles but can't find the source now

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  • How can I use Generics to create a way of making an IEnumerable from an enum?

    - by Samantha J
    Given an enum like this: public enum City { London = 1, Liverpool = 20, Leeds = 25 } public enum House { OneFloor = 1, TwoFloors = 2 } I am using the following code to give me an IEnumerable: City[] values = (City[])Enum.GetValues(typeof(City)); var valuesWithNames = from value in values select new { value = (int)value, name = value.ToString() }; The code works very good however I have to do this for quite a lot of enums. Is there a way I could create a generic way of doing this?

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  • Why does the Java compiler complain about a local variable not having been initialized here?

    - by pele
    int a = 1, b; if(a > 0) b = 1; if(a <= 0) b = 2; System.out.println(b); If I run this, I receive: Exception in thread "main" java.lang.Error: Unresolved compilation problem: The local variable b may not have been initialized at Broom.main(Broom.java:9) I know that the local variables are not initialized and is your duty to do this, but in this case, the first if doesn't initialize the variable?

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  • memset for initialization in C++

    - by skydoor
    memset is sometimes used to initialize data in a constructor like the example below. Does it work in general ? Is it a good idea in general? class A { public: A(); private: int a; float f; char str[35]; long *lp; }; A::A() { memset(this, 0, sizeof(*this)); }

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  • Android: ListAdapter populating image (icon) source

    - by user117701
    I'm populating a list from the DB, and i have a image field in the DB which contains a URL to a image file. ListAdapter adapter=new SimpleCursorAdapter(this, R.layout.row, constantsCursor, new String[] {"title", "subtitle", "image"}, new int[] {R.id.value, R.id.title, R.id.icon}); However, the other fields are populated, but the image remains empty. Why?

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  • Way to get unsigned char into a std::string without reinterpret_cast?

    - by WilliamKF
    I have an unsigned char array that I need in a std::string, but my current way uses reinterpret_cast which I would like to avoid. Is there a cleaner way to do this? unsigned char my_txt[] = { 0x52, 0x5f, 0x73, 0x68, 0x7e, 0x29, 0x33, 0x74, 0x74, 0x73, 0x72, 0x55 } unsigned int my_txt_len = 12; std::string my_std_string(reinterpret_cast<const char *>(my_txt), my_txt_len);

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  • clear all array list data

    - by lolalola
    Hi, Why don't clear all Array list data? Console.WriteLine("Before cleaning:" + Convert.ToString(ID.Count)); //ID.Count = 20 for (int i = 0; i < ID.Count; i++) { ID.RemoveAt(i); } Console.WriteLine("After cleaning:" + Convert.ToString(ID.Count)); //ID.Count = 10 From where 10 data? Maybe there is another special function, which deletes everything?

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  • Initializing a C++ vector to random values... fast

    - by Flamewires
    Hey, id like to make this as fast as possible because it gets called A LOT in a program i'm writing, so is there any faster way to initialize a C++ vector to random values than: double range;//set to the range of a particular function i want to evaluate. std::vector<double> x(30, 0.0); for (int i=0;i<x.size();i++) { x.at(i) = (rand()/(double)RAND_MAX)*range; } EDIT:Fixed x's initializer.

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  • Retrieve Value from NSString

    - by Taimur Hamza
    Hi, i have a NSString instance ,i want to retrieve value from it and store it into an integer. This is wat i am doing but its not working. NSString *totalcnt; char *str = totalcnt; int a = atoi(str); Help me out. Thanks Taimur

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