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  • How do I toggle 'always on top' for a QMainWindow in Qt?

    - by Jake Petroules
    void MainWindow::on_actionAlways_on_Top_triggered(bool checked) { Qt::WindowFlags flags = this->windowFlags(); if (checked) { this->setWindowFlags(flags | Qt::CustomizeWindowHint | Qt::WindowStaysOnTopHint); this->show(); } else { this->setWindowFlags(flags ^ (Qt::CustomizeWindowHint | Qt::WindowStaysOnTopHint)); this->show(); } } The above solution works but because setWindowFlags hides the window, it needs to be re-shown and of course that doesn't look very elegant. So how do I toggle "always on top" for a QMainWindow without that "flashing" side effect?

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  • How can I clear the Android app cache?

    - by Srao
    I am writing a app which can programatically clear application cache of all the third party apps installed on the device. Following is the code snippet for Android 2.2 public static void trimCache(Context myAppctx) { Context context = myAppctx.createPackageContext("com.thirdparty.game", Context.CONTEXT_INCLUDE_CO|Context.CONTEXT_IGNORE_SECURITY); File cachDir = context.getCacheDir(); Log.v("Trim", "dir " + cachDir.getPath()); if (cachDir!= null && cachDir.isDirectory()) { Log.v("Trim", "can read " + cachDir.canRead()); String[] fileNames = cachDir.list(); //Iterate for the fileName and delete } } My manifest has following permissions: android.permission.CLEAR_APP_CACHE android.permission.DELETE_CACHE_FILES Now the problem is that the name of the cache directory is printed but the list of files cachDir.list() always returns null. I am not able to delete the cache directory since the file list is always null. Is there any other way to clear the application cache?

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  • apache commons http client efficiency

    - by wo_shi_ni_ba_ba
    I use apache commons http client to send data via post every second, is there a way to make the following code more efficient? I know http is stateless, but is there anything I can do to improve since the base url is always the same in this case(only the parameter value change. private void sendData(String s){ try { HttpClient client = getHttpClient(); HttpPost method = new HttpPost("http://192.168.1.100:8080/myapp"); System.err.println("send to server "+s); List formparams = new ArrayList(); formparams.add(new BasicNameValuePair("packet", s)); UrlEncodedFormEntity entity = new UrlEncodedFormEntity(formparams, "UTF-8"); method.setEntity(entity); HttpResponse resp=client.execute(method); String res = EntityUtils.toString(resp.getEntity()); System.out.println(res); } catch (Exception e) { e.printStackTrace(); } } private HttpClient getHttpClient() { if(httpClient==null){ httpClient = new DefaultHttpClient(); } return httpClient; }

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  • DTPicker: how to open up an control expanded (by default)?

    - by Olli
    Hi all, in my windows form (Visual C++ 6.0) I'm using an Active x control called "CDTPicker" (CDTPicker : public CWnd). My control is opened up by the click event of another button. like this (works fine): void CProducerDlg::OnSelect() { ... m_wndDatePicker.SetValue(varVariant); // hide date combo box if first entry has been chosen m_wndDate.ShowWindow(SW_HIDE); // show date picker if first entry is chosen m_wndDatePicker.ShowWindow(SW_SHOW); // open up calendar view [tbd] ... } What I need is the calendar view to open up expanded (showing the complete month). I don't find any method to do this... Who can help me? Thanks in advance Olli

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  • Why does the right-shift operator produce a zero instead of a one?

    - by mrt181
    Hi, i am teaching myself java and i work through the exercises in Thinking in Java. On page 116, exercise 11, you should right-shift an integer through all its binary positions and display each position with Integer.toBinaryString. public static void main(String[] args) { int i = 8; System.out.println(Integer.toBinaryString(i)); int maxIterations = Integer.toBinaryString(i).length(); int j; for (j = 1; j < maxIterations; j++) { i >>= 1; System.out.println(Integer.toBinaryString(i)); } In the solution guide the output looks like this: 1000 1100 1110 1111 When i run this code i get this: 1000 100 10 1 What is going on here. Are the digits cut off? I am using jdk1.6.0_20 64bit. The book uses jdk1.5 32bit.

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  • HardCoded the import path in eclipse plugins development

    - by user295636
    Hi In eclipse when we open:- **File-Import-General-Existing Project into workspace then it prompt a import window. Where We have to select a Root project Directory(Browse)..so in this i want to hardcode the Browse path. By default it goes to workspace directory..but i want a fix path like.. C:\Tmp ..while click on browse button it should go to C:\Tmp directory....Can anyone help me in this.. how to do this i have tried setfilterpath() but it is not supporting in wizard case..i have done my code like this: public class OpenImportWizardAction extends Action { public void run() { IWorkbench workbench = PlatformUI.getWorkbench(); Shell shell = workbench.getActiveWorkbenchWindow().getShell(); ExternalProjectImportWizard wizard= new ExternalProjectImportWizard(); wizard.init(workbench,new StructuredSelection()); WizardDialog dialog= new WizardDialog(shell, wizard); dialog.create(); dialog.open(); } }

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  • recv receiving not whole data sometime

    - by milo
    hi all, i have following issue: here is the chunk of code: void get_all_buf(int sock, std::string & inStr) { int n = 1; char c; char temp[1024*1024]; bzero(temp, sizeof(temp)); n = recv(sock, temp, sizeof(temp), 0); inStr = temp; }; but sometimes recv returning not whole data (data length always less then sizeof(temp)), only it's part. write side always sends me whole data (i got it with sniffer). what matter? thx. P.S. i know, good manner suggests me to check n (if (n < 0) perror ("error while receiving data), but it doesn't matter now - it's not reason of my problem. P.S.2 i've forgot - it's blocking socket.

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  • JQuery Ajax Always Fires Error Function

    - by CccTrash
    AddFileToDB.ashx: public void ProcessRequest (HttpContext context) { context.Response.ContentType = "application/json"; context.Response.Write("{ \"filename\": \"test.jpg\" }"); } JQuery: $.ajax({ url: 'AddFileToDB.ashx', dataType: 'json', success: function(data) { alert(data.filename); }, error: function(data) { alert('error'); }, }); This always results in the error function being called. I don't know why? Thoughts? AddFileToDB.ashx gets fired, but success never gets run.

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  • test cases for testing a strtok-alike function [C++]

    - by Neeraj
    Consider the following class definition: class StrToTokens { StrToTokens(const char* str, const char* delimiters = "\t\r\n"); //constructor string getNextToken(); void reset(); bool empty(); } Can someone list some good testcases to test the above class. A few I could think of are: empty string, empty delimiters, repeated delimiters, consecutive delimiters, string with only delimiters. However, the interviewer expected some more(better ones). Can you help out. Thanks.

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  • A basic animation not showing up

    - by Rilakkuma
    I still try different basics with android, and now I'm stuck with animation. I'm trying to implement a simple animation. I've defined animation in xml file like this: alpha android:interpolator="@android:anim/accelerate_interpolator" android:fromAlpha="0.0" android:toAlpha="1.0" duration="3000" repeatCount="infinite" In my main view group I have an ImageView defined like this: <ImageView android:id="@+id/someb" android:src="@drawable/earth_normal" android:layout_width="wrap_content" android:layout_height="wrap_content" android:padding="5dip"/> And this is from my starting activity class: public class Ohayou extends Activity { @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); ImageView earth = (ImageView)findViewById(R.id.someb); Animation earthFadeInAnimation = AnimationUtils.loadAnimation(this, R.anim.fade_in); earth.startAnimation(earthFadeInAnimation); } It finds ImageView successfuly and creates animation. but when I start emulator ImageView just shows the original src image, not an animation. What am I doing wrong? Thanks

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  • Additional parameters for FileSystemEventHandler

    - by peku
    I'm trying to write a program that could monitor multiple folders for file creations and launch the same action but with different settings for each folder. My problem is in specifying an extra parameter for the FileSystemEventHandler. I create a new FileWatcher for each directory to monitor and add the handler for the Created-action: foreach (String config in configs) { ... FileWatcher.Created += new System.IO.FileSystemEventHandler(FileSystemWatcherCreated) ... } void FileSystemWatcherCreated(object sender, System.IO.FileSystemEventArgs e, MySettings mSettings) { DoSomething(e.FullPath, mSettings); } How could I get the 'mSettings' variable passed to FileSystemWatcherCreated()?

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  • How do I get a UIView which displays text to behave like a UILabel when bounds change?

    - by Hilton Campbell
    I have a UIView in which I need to draw text in drawRect: - (void)drawRect:(CGRect)rect { ... [@"some text" drawAtPoint:somePoint withFont:someFont]; ... } Because the text requires special formatting, I cannot just use a UILabel. It looks fine until I rotate the device. Then the size of my custom UIView changes (in the parent view's layoutSubviews method), and the text becomes stretched in one direction and squished in the other. When I replace my view with a UILabel, the text always looks great, even when the bounds of the view changes. How can I get my view to exhibit the same behavior as UILabel? Some things I have looked into, but have yet to have success with: Set the view's layer's needsDisplayOnBoundsChange to YES. Set the view's contentStretch to CGRectZero. Call setNeedsDisplay in my view's layoutSubviews. Maybe I'm not doing one of these things right. Has anyone else run into this?

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  • Dart Can't get logging statements to compile

    - by Nate Lockwood
    I'm trying to learn how to implement logging using the examples/tutorial in: http://blog.dartwatch.com/2013/05/campaign-to-use-real-logging-instead-of.html#comment-form But having imported the libraries this line in main will not compile because the class 'PrintHandler' is not recognized and Google has not been a help in this case. My server application consists of a main and three classes. I'm new at Dart. Below I've extracted the logging code that I added. In what library is 'PrintHandler'? Is this a class I need to write? library server; import 'package:logging_handlers/logging_handlers_shared.dart'; import 'package:logging/logging.dart'; final _serverLogger = new Logger("server"); // top level logger void main() { Logger.root.onRecord.listen(new PrintHandler()); // default PrintHandler _serverLogger.fine("Server created"); } class A { } class B { } class C { }

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  • What am i doing wrong with this in asp.net-mvc?

    - by Pandiya Chendur
    I gave this in my site.master <li><%= Html.ActionLink("Material", "Index", "Material")%></li> But my link doesnt seem to get my material controller Index method... I have this in my global asax file, public static void RegisterRoutes(RouteCollection routes) { routes.IgnoreRoute("{resource}.axd/{*pathInfo}"); routes.MapRoute( "Default", "{controller}/{action}/{id}", new { controller = "Home", action = "Index", id = "" } ); routes.MapRoute( "Default", "{controller}/{action}/{id}", new { controller = "Material", action = "Index", id = "" } ); } My controller: public class MaterialController : Controller { // // GET: /Material/ Material material = new Material(); public ActionResult Index() { var materials = material.FindAllMaterials(); return View(); } } What am i doing wrong.... When i click the link i get The resource cannot be found. error.. Any suggestion...

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  • Need help in understanding kcachedgrind output

    - by hap497
    Hi, I am using valgrind callgrind to profile a program on gtk. And then I use kcachedgrind to read the result. I have captured an update a screenshot of kcachedgrind here: http://i41.tinypic.com/168spk0.jpg. It said the function gtk_moz_embed_new() costed '15.61%'. But I dont understand how is that possible. the function gtk_moz_embed_new() literally has 1 line: and it is just calling a g_object_new(). GtkWidget * gtk_moz_embed_new(void) { return GTK_WIDGET(g_object_new(GTK_TYPE_MOZ_EMBED, NULL)); } Can you please help understanding the result or how to use kcachedgrind. Thank you.

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  • C# compile error for simple Annual Salary Calculator

    - by Mike Vignapiano
    I am new to C# and trying to create my 1st app. I have 3 errors. The first two say that txtSalary and Salary do not exist. The 3rd says that it cannot convert method group 'ToString' to non-delegate type 'string'. and asks if I intend to invoke the method. Here is what I have: protected void Button1_Click(object sender, EventArgs e) { int salary, AnnualHours, Rate; string txtAnnualHours, txtSalary, txtRate; salary = AnnualHours * Rate; txtsalary = int.Parse(Salary); txtAnnualHours = salary.ToString; MessageBox.Show(salary); } According to my book, when you enter numerics in AnnualHours and Rate textbox, when click Button1, these values are converted from string to integers, then multiplied for salary. Then numeric answer converted to string and displayed in messagebox named txtSalary. Please show me what I got wrong because according to the book, I am not missing anything.

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  • UITableViewController setting delegates and datasource

    - by the_great_monkey
    Hi iOS gurus, I'm a little bit confused about UITableViewController... As far as I concern they are typically the delegate and datasource of the UITableView (although it can be made such that they are different). However in some cases, like when embedding a UITableViewController in a UITabBarViewController in Interface Builder, we initiate our table view controller in IB. Therefore in my understanding, the default initialiser is being called. But in this case, I have this piece of code: @interface Settings : UITableViewController { } And in the IB I see that the delegate and datasource of the UITableView is hooked up to this class. My question is, why is it that we don't need to explicitly say that it is following: @interface Settings : UITableViewController <UITableViewDelegate, UITableViewDataSource> { } And in the .m file: - (void)viewDidLoad { [super viewDidLoad]; [tableView setDelegate:self]; [tableView setDataSource:self]; } I have indeed stumbled upon some cases where I have to explicitly code the above a few times to make something work. Although it is still a mystery for me as of why it is needed...

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  • How to know who kills my threads

    - by mcabral
    I got a thread that is just banishing.. i'd like to know who is killing my thread and why. It occurs to me my thread is being killed by the OS, but i'd like to confirm this and if possible to know why it's killing it. As for the thread, i can assert it has at least 40 min of execution before dying, but it suddenly dies around 5 min. public void RunWorker() { Thread worker = new Thread(delegate() { DoSomethingForALongLongTime(); }); worker.IsBackground = true; worker.SetApartmentState(System.Threading.ApartmentState.STA); worker.Start(); }

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  • DataGridView and the CellEndEdit Event

    - by Brandon
    I have a DataGridView, and would like to hook into the CellEndEdit event. I've been able to successfully hook into the CellContentClick event, but am having issues with CellEndEdit. I added the following code to my Form1.cs file: private void dataGridView1_CellEndEdit(object sender, DataGridViewCellCancelEventArgs e) { dataGridView1[0, 0].Value = "Changed"; } With that code, nothing happens when I am done editing a cell. Is there anything else that I need to do to successfully hook into this event? I see that CellContentClick has a this.dataGridView1.CellContentClick += new System.Windows.Forms.DataGridViewCellEventHandler(this.dataGridView1_CellContentClick); line of code in the Form1.Designer.cs file, but I tried to mimic this for CellEndEdit, and received a compile error (No overload for 'dataGridView1_CellEndEdit' matches delegate 'System.Windows.Forms.DataGridViewCellEventHandler')

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  • Debug.Assert seems not to work in Mono

    - by Jan-Willem
    Consider the following C# program: using System; using System.Diagnostics; namespace Test { class MainClass { public static void Main (string[] args) { Debug.Assert(false); Debug.Fail("fail!"); Console.WriteLine ("Hello World!"); } } } When compiling this using: dmcs -debug -d:DEBUG Main.cs and then running it with: mono --debug Main.exe the assertion and fail seem to be ignored. The output is just: Hello World! I checked other related questions on StackOverflow, but I could not find a solution. In particular the solution give in Mono - Debug.Assert does not work does not work. (UPDATE: the update solution does work, see below comments.) I use Mono 2.1.5-1 on Ubuntu 11.10.

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  • initWithCoder breaking my touch events (touchBegan, touchMoved, etc)

    - by Adam
    So I have a UIView that has been setup, and in each touch event handler I have an NSLog fire off a message to the console. - (void) touchesBegan:(NSSSet*)touches withEvent:(UIEvent*)event { NSLog(@"touchesBegan"); } And that pretty much works as expected. But once I implement initWithCoder (even blank) - (id)initWithCoder:(NSCoder*)coder { return self; } I no longer receive the message to my console (or can hit breakpoints obviously). This is my first app so I'm probably missing something dumb, but I've looked through various example apps and I don't appear to be missing any code that would re-enable touch events.

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  • Reduce the number of queries in EF

    - by Gio2k
    I have the following Model: Entities: Product (Contains basic data for products: price, etc) Attribute (Contains data for all possible optional attributes) ProductAttribute (Contains data for optional attributes of a product, eg. Color, Model, Size). ProductAttribute is essentially a many to many relationship with payload (ProductId, AttributeID, Value) And this piece of code: private static void ListAttributes(Product p) { p.ProductAttributes.Load(); foreach (var att in p.ProductAttributes) { att.Attribute.load(); Console.WriteLine("\tAttribute Name:{0} - Value {1}", att.Attribute.Name, att.AttributeValue); } } This piece of code will fire a query for each time the att.Attribute.Load() method is called in the foreach loop, only so i can get display the name of the attribute. I would like to fetch the Attribute.Name together with the query that fetches all attribute values, i.e. join ProductAttribute and Attribute. Is there any way to achieve this within my method?

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  • IPhone SDK - Vibration triggered by Thread

    - by Steblo
    Hi, I'm currently working on an IPhone App that should make the phone vibrate if a special event occurs. The checks to trigger the alert is done in a thread. Unfortunately the phone won't vibrate if I call AudioServicesPlaySystemSound(kSystemSoundID_Vibrate); from inside the thread. (It works fine if I call this in my "viewDidAppear" method). I even tried to do a callback from inside the thead like this: inside Thread: [self performSelectorOnMainThread:@selector(doAlarm) withObject:nil waitUntilDone:true]; -(void)doAlarm { AudioServicesPlaySystemSound(kSystemSoundID_Vibrate); } which has the same result: No vibration on the phone. How do I make the phone vibrate from inside a thread ?? Thanks in advance

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  • Botan::SecureVector - Destructor called in Constructor???

    - by sheepsimulator
    When using the Botan::SecureVector in the following unit test: void UnitTest() { std::vector<byte> vbData; vbData.push_back(0x04); vbData.push_back(0x04); vbData.push_back(0x04); Botan::SecureVector<Botan::byte> svData(&vbData[0], vbData.size()); CPPUNIT_ASSERT(vbData == std::vector<byte>(svData.begin(), svData.end())); } a segmentation fault occurs when trying to allocate the SecureVector.

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  • web service client in java

    - by user622222
    I want to generate a client program using the service I am unable to display the results, how can I do so? import java.rmi.RemoteException; public class searchtry { public static void main(String[] args) throws RemoteException { SearchRequest request=new SearchRequest(); SearchRequestType1 type1=new SearchRequestType1(); query.setAppId("*********************************"); //Windows Live gave this id for using that service query.setSources(new SourceType[]{SourceType.Web}); query.setQuery("Java"); aratip.setParameters(request); SearchResponseType0 answer= client.search(type1); System.out.println(answer.toString()); }

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