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  • how to update UI controls in cocoa application from background thread

    - by AmitSri
    following is .m code: #import "ThreadLabAppDelegate.h" @interface ThreadLabAppDelegate() - (void)processStart; - (void)processCompleted; @end @implementation ThreadLabAppDelegate @synthesize isProcessStarted; - (void)awakeFromNib { //Set levelindicator's maximum value [levelIndicator setMaxValue:1000]; } - (void)dealloc { //Never called while debugging ???? [super dealloc]; } - (IBAction)startProcess:(id)sender { //Set process flag to true self.isProcessStarted=YES; //Start Animation [spinIndicator startAnimation:nil]; //perform selector in background thread [self performSelectorInBackground:@selector(processStart) withObject:nil]; } - (IBAction)stopProcess:(id)sender { //Stop Animation [spinIndicator stopAnimation:nil]; //set process flag to false self.isProcessStarted=NO; } - (void)processStart { int counter = 0; while (counter != 1000) { NSLog(@"Counter : %d",counter); //Sleep background thread to reduce CPU usage [NSThread sleepForTimeInterval:0.01]; //set the level indicator value to showing progress [levelIndicator setIntValue:counter]; //increment counter counter++; } //Notify main thread for process completed [self performSelectorOnMainThread:@selector(processCompleted) withObject:nil waitUntilDone:NO]; } - (void)processCompleted { //Stop Animation [spinIndicator stopAnimation:nil]; //set process flag to false self.isProcessStarted=NO; } @end I need to clear following things as per the above code. How to interrupt/cancel processStart while loop from UI control? I also need to show the counter value in main UI, which i suppose to do with performSelectorOnMainThread and passing argument. Just want to know, is there anyother way to do that? When my app started it is showing 1 thread in Activity Monitor, but when i started the processStart() in background thread its creating two new thread,which makes the total 3 thread until or unless loop get finished.After completing the loop i can see 2 threads. So, my understanding is that, 2 thread created when i called performSelectorInBackground, but what about the thrid thread, from where it got created? What if thread counts get increases on every call of selector.How to control that or my implementation is bad for such kind of requirements? Thanks

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  • Converting an AWT application to SWT/JFace

    - by data
    I am currently toying with the idea of converting a small/medium sized project from AWT to SWT, although Swing is not totally out of the picture yet. I was thinking about converting the main window to an SWT_AWT bridge object, but I have no idea how the semantics for this work. After that, I plan to update dialog for dialog, but not necessarily within one release. Is this possible? Has someone done a conversion like this and can give me some hints? Is there maybe even a tutorial somewhere out there? Is there maybe even a tool that can automate parts of this? I have tried googling, but to no avail. Update: One additional thing is: Currently, this is a netbeans project. Might be of help or not, I don't know.

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  • is it safe to call "plink.exe" in an application

    - by EBAGHAKI
    i want to use "plink.exe -u username -pw securepassword" on my windows visual c++ program. will username and password remain safe while calling this command? I mean can a hacker steal or sniff the username and password? (consider hacker can't get to the password directly from the exe file)

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  • File Hierarchy system with a web application logic question: List searching

    - by molleman
    I need to search through a list of folders that could have more folders inside it, and add a new folder depending what folder is its parent.(the path is stored as a String for eg = "root/MyCom/home/") Then i fill in a field with a new folder name and add it to the final folder(eg "home/"). Below as you can see , I can navigate to the right location and add the new folder to a current folder, My trouble is that i cannot ensure that currentFolder element is placed back in the list it came from how could i add a folder to a list of folders, that could be within a list of folders,that could be within a list of folders and endless more? YFUser user = (YFUser)getSession().getAttribute(SESSION_USER); Folder newFolder = new Folder(); newFolder.setFolderName(foldername); // this is the path string (root/MyCom/home/) split in the different folder names String folderNames[] = folderLocationString.split("/"); int folderNamesLength = folderNames.length; Folder root = user.getRoot(); Folder currentFolder = root; for(int i=0;i<=folderNamesLength; i++){ // because root is folderNames[i] String folderName = folderNames[i++]; int currentFolderSize = currentFolder.getChildren.getSize(); for(int o=1; o<= currentFolderSize ; o++){ if(currentFolder.getChildren().get(o) instanceof Folder){ if(folderName.equals(currentFolder.getChildren().get(o).getFolderName())){ currentFolder = currentFolder.getChildren().get(o); if (i == counter){ //now i am inside the correct folder and i add it to the list of folders within it //the trouble is knowing how to re add this changed folder back to the list before it currentFolder.getChildren.add(newFolder); } } } } }

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  • how to debug MySql stored procs without breaking control flow from application

    - by M.Taha Masood
    Is there a way to do the following: I have a MySQL DB , and there are many stored procs written in it as well. I use MySQL client library in C to connect to this DB and amongst other things , call the stored procedures. Is there a way to set breakpoints in the stored procedures such that when the call is made from C program ( using mySql client library ) into the stored proc , then control flow is halted in the C program and we can step into the stored proc called to whatever level of nesting and insspecting variables etc ( like any decent C debugged provides )? Is there ANY way to do the above ? Through some third party tool or the like if not through plain MySql . Help is appreciated. thanks

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  • Get an array of structures from native dll to c# application

    - by PaulH
    I have a C# .NET 2.0 CF project where I need to invoke a method in a native C++ DLL. This native method returns an array of type TableEntry. At the time the native method is called, I do not know how large the array will be. How can I get the table from the native DLL to the C# project? Below is effectively what I have now. // in C# .NET 2.0 CF project [StructLayout(LayoutKind.Sequential)] public struct TableEntry { [MarshalAs(UnmanagedType.LPWStr)] public string description; public int item; public int another_item; public IntPtr some_data; } [DllImport("MyDll.dll", CallingConvention = CallingConvention.Winapi, CharSet = CharSet.Auto)] public static extern bool GetTable(ref TableEntry[] table); SomeFunction() { TableEntry[] table = null; bool success = GetTable( ref table ); // at this point, the table is empty } // In Native C++ DLL std::vector< TABLE_ENTRY > global_dll_table; extern "C" __declspec(dllexport) bool GetTable( TABLE_ENTRY* table ) { table = &global_dll_table.front(); return true; } Thanks, PaulH

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  • "session" bean scope in a web application - reliable ?

    - by EugeneP
    Can you rely on this scope and be sure that every time 1) a new session starts, the Spring bean will be initialized with default values 2) while session is kept alive, the current object will store its state during session life, will never be lost or corrupted and can always be got with [webappcontext].getBean ?

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  • Where to store application global variable?

    - by Shawn Mclean
    I'm using silverlight, project structure is similiar to any other .net app. I have a map control that I would like to store what mode it is in (either road or aerial) so that other controls can access this. Where do I put this enum variable, I plan to use 2 way binding on it so both are updated when either changes. Thanks.

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  • Hooking into DirectX application

    - by x3ro
    Hey there :) I'm currently trying to display some information (as an overlay) to the user inside a DirectX-based game, much like the frame count which Fraps displayed, but I have no clue where to start. I don't expect a full solution to my problem, just a few hints where I can start and where to get more information about the topic ;) Thanks in advance. PS: The project I'm working on is written in C# (.NET 3.5) PPS: To clarify: I mean hooking into any random DX-based game. Start my app, start any game, display some kind of overlay.

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  • How to (unit-)test data intensive PL/SQL application

    - by doom2.wad
    Our team is willing to unit-test a new code written under a running project extending an existing huge Oracle system. The system is written solely in PL/SQL, consists of thousands of tables, hundreds of stored procedures packages, mostly getting data from tables and/or inserting/updating other data. Our extension is not an exception. Most functions return data from a quite complex SELECT statementa over many mutually bound tables (with a little added logic before returning them) or make transformation from one complicated data structure to another (complicated in another way). What is the best approach to unit-test such code? There are no unit tests for existing code base. To make things worse, only packages, triggers and views are source-controlled, table structures (including "alter table" stuff and necessary data transformations are deployed via channel other than version control). There is no way to change this within our project's scope. Maintaining testing data set seems to be impossible since there is new code deployed to the production environment on weekly basis, usually without prior notice, often changing data structure (add a column here, remove one there). I'd be glad for any suggestion or reference to help us. Some team members tend to be tired by figuring out how to even start for our experience with unit-testing does not cover PL/SQL data intensive legacy systems (only those "from-the-book" greenfield Java projects).

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  • Use relative Path in Microsoft Surface application?

    - by Roflcoptr
    I convert my wave file into a mp3 file by the following code: internal bool convertToMp3() { string lameEXE = @"C:\Users\Roflcoptr\Documents\Visual Studio 2008\Projects\Prototype_Concept_2\Prototype_Concept_2\lame\lame.exe"; string lameArgs = "-V2"; string wavFile = fileName; string mp3File = fileName.Replace("wav", "mp3"); Process process = new Process(); process.StartInfo = new ProcessStartInfo(); process.StartInfo.FileName = lameEXE; process.StartInfo.Arguments = string.Format("{0} {1} {2}", lameArgs, wavFile, mp3File); process.Start(); process.WaitForExit(); int exitCode = process.ExitCode; if (exitCode == 0) { return true; } else { return false; } } This works, but now I'd like to not use the absolut path to the lame.exe but a relative path. I included a lame.exe in the folder /lame/ on the root of the project. How can I reference it?

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  • Need an Asp.net MVC Application solution

    - by Daoming Yang
    I have implemented a small ordering and stock control system (for internal using) with the MVC 2 framework. Now my friends, they want to have a website to present the existing products for their customers. I know, I know they will ask me to do this one day. So in the beginning, I have made the controller name to start with "Admin". But now I am not sure the best way to implement their requirements. Could you advise me? 1.For the security reason, I did not allowed anonymous user to access the website a part from the CSS and image files. My question is the controllers' name are not folders' name, how could I set this up? 2.I'm planning to put the admin section into an "area" and will it be a good way to go? Can anyone provide me some suggestions. Many thanks.

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  • Automatic Deployment of Windows Application

    - by dileepkrishnan
    Hi, We have setup continuos integration in our development environment using SVN, CC.Net, MSBuild and Nunit. Now, we want to automate the process of moving (copying) builds from one stage to another like this: Whenever a new build succeeds in Dev, that should be copied automatically to the QA server (a folder on the QA server, to be exact) Whenever a QA build succeeds tests in QA, that QA build should be copied to the UAT server (a folder on the UAT server, to be exact). This should be implemented as a process (a CC task, for example) which we can start when QA succeeds. Whenever a UAT build succeeds tests in UAT, that should be copied to the PROD server (a folder on the PROD server, to be exact). This should be implemented as a process (a CC task, for example) which we can start when UAT succeeds. How do I implement this? Can this be done using CC.Net alone? Or, can this be done using MSBuild? Or, do I need to employ both? Please advise what exactly needs to be done. Thanks Dileep Krishnan

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  • Google Application Engine slow in case of Python...

    - by Aftershock
    hi, I am reading a "table" in Python in GAE that has 1000 rows and the program stops because the time limit is reached. (So it takes at least 20 seconds.)( Is that possible that GAE is that slow? Is there a way to fix that? Is this because I use free service and I do not pay for it? Thank you. The code itself is this: for u in userall: # userall has 1000 users for stockname in stocknamesall: # 4 stocks astock= stocksowned() astock.quantity = random.randint(1,100) astock.nameid = u.key() astock.stockid = stockname.key() liststocks.append(astock);

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  • A lightweight application framework for PHP?

    - by millenomi
    I have long been a fan of _why's Camping microframework -- lightweight, great for microscopic applications (low concurrency, easy to use and edit and maintain), which is what I do. I'd love to know if there's something similar for PHP; full-blown app frameworks like CakePHP or Symphony are very large for what I do, but I can't seem to find nothing "less". What PHP framework would you prefer, in this situation?

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  • How do I fix this error? Windows server 2003 the application failed to initialize properly (0xc0000022)

    - by Sharon
    Opening one of the programs from the user desktop I get the above Aplication error. It is a proram stored on the server and then the icon put on the users desktop (this is how I was told to do it) but it does not run the application. I don't know anything about group policies etc and can just about manage to add users in the active directory and that is it. We just have a folder which we drop the program icons into. Any ideas? I must be doing something wrong as it doesn't always show up on their desktop either. What is the simplest way to do this? Thanks

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