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  • Handling Messages in Console Apps/DLLs in C++ Win32

    - by vsimon
    I would like to have the ability to process Win32 messages in a console app and/or inside a standalone DLL. I have been able to do it in .NET with the following article and it works great in C# inside a console app and standalone DLL http://msdn.microsoft.com/en-us/magazine/cc163417.aspx Is there a way to do the equivalent with C/C++ Win32 APIs? I have tried doing RegisterClassEx(...) and CreateWindow(...) even passing in HWND_MESSAGE to hWndParent but the trouble is that after the "invisible" window is created messages are not being processed probably due to the lack of a message pump. Where would the message pump go if you had a DLL entry point? I have tried creating another thread in a DLL and put while(GetMesage(..)) there but that did not work either. Any ideas?

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  • change the default window font in a win32 windows project

    - by Vineel Kumar Reddy
    I am creating a GUI application using C and Win32 api. I would like to know how we can change the default font of the Main window to thaoma. I am comming from .NET background. In .NET if we change the font of parent control then automatically the child controls inherits that font.... Is there away similar to it or do we need to manually set the font of each control..... Please help me here.......and let me know the general process followed while coding in win32 api.... THanks in advance..

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  • WIN32 Logon question

    - by Lalit_M
    We have developed a ASP.NET 3.5 web application with Web Server 2008 and has implemented a custom authentication solution using active directory as the credentials store. Our front end application uses a normal login form to capture the user name and password and leverages the Win32 LogonUser method to authenticate the user’s credentials. When we are calling the LogonUser method, we are using the LOGON32_LOGON_NETWORK as the logon type. The issue we have found is that user profile folders are being created under the C:\Users folder of the web server. The folder seems to be created when a new user who has never logged on before is logging in for the first time. As the number of new users logging into the application grows, disk space is shrinking due to the large number of new user folders getting created. I need to get the token back after the authentication (authenticated \ password locked \ wrong password ) its futher use and based on logic showing different web pages Has anyone seen this behavior with the Win32 LogonUser method? Please answer the following issue: Is it possible to disable this behavior to create the folder as taking 2.78 MB of space for every new user and it eating my disck space? I have tried LOGON32_LOGON_BATCH but it was giving an error 1385 in authentication user. For any solution related to LOGON32_LOGON_BATCH, can you please confirm if that will stop creating the folders at location C:\users. Also for any possible solution I need either I am able to disable the folder to be created at C:\user or Any other option to authenticated user which will not creat folders.

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  • WIN32 API question - Looking for answer asap

    - by Lalit_M
    We have developed a ASP.NET web application and has implemented a custom authentication solution using active directory as the credentials store. Our front end application uses a normal login form to capture the user name and password and leverages the Win32 LogonUser method to authenticate the user’s credentials. When we are calling the LogonUser method, we are using the LOGON32_LOGON_NETWORK as the logon type. The issue we have found is that user profile folders are being created under the C:\Users folder of the web server. The folder seems to be created when a new user who has never logged on before is logging in for the first time. As the number of new users logging into the application grows, disk space is shrinking due to the large number of new user folders getting created. Has anyone seen this behavior with the Win32 LogonUser method? Does anyone know how to disable this behavior? I have tried LOGON32_LOGON_BATCH but it was giving an error 1385 in authentication user. I need either of the solution 1) Is there any way to stop the folder generation. 2) What parameter I need to pass this to work? Thanks

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  • How to localize win32 dialogs?

    - by Alien01
    I am working on Win32 dialogs with various controls like Static Text , Checkbox etc and all the strings need to be localized for different languages. I have designed the dialogs for US intl . But when I put localized strings those, not fitting properly and I have to change layout for each intl. Is there a better way to do this? Can I create one dialogs with one layout that should work with all Intsl???

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  • Win32 API prevent standby

    - by bobobobo
    What is the Win32 api function that prevents the system from going into standby? Some programs use it, which is pretty annoying in my opinion. I know there's a couple of WM_SYSCOMMAND messages you can trap to prevent the screensaver from coming on..

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  • Win32 C/C++ Load Image from memory buffer

    - by Bruno
    I want to load a image (.bmp) file on a Win32 application, but I do not want to use the standard LoadBitmap/LoadImage from Windows API: I want it to load from a buffer that is already in memory. I can easily load a bitmap directly from file and print it on the screen, but this issue is making me stuck :( What I'm looking for is a function that works like this: HBITMAP LoadBitmapFromBuffer(char* buffer, int width, int height); Thanks.

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  • Linking win32 dll in Qt

    - by kambamsu
    Hi, I want to reference a win32 dll from my Qt application. I've added the dll location in the .pro file at "LIBS+=" . Once that is done, by right, i should be able to include the .h file inside the dll from my application. But i'm unable to do so. I'm testing with the dll here: http://www.flipcode.com/archives/Creating_And_Using_DLLs.shtml Any help would be appreciated! Thanks

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  • Using OpenGL in a regular window (Win32)

    - by user146780
    I want to use OpenGL in my WndProc but I'm not sure how. I also don't want GL to occupy the whole screen, just a portion of the screen. In the end I basically want to make a drawing win32 app but use OGL instead of GDI. so how can I tell GL to use my control (a panel) 's hdc for drawing? Thanks

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  • Strange macro declaration in C

    - by Andrey Atapin
    Exploring libusb-1.0.9 source code, I have found such line (./os/poll_windows.c:78): #define CHECK_INIT_POLLING do {if(!is_polling_set) init_polling();} while(0) As for me this is the same like: #define CHECK_INIT_POLLING if(!is_polling_set) init_polling(); Is there any reason to loop that expression? UPDATE: I couldn't still realize what'd be wrong after the answers, and the following example helped: #include <stdio.h> #define TEST if(test) foo(); #define TEST_DO do { if(test) foo(); } while(0) int test = 1; void foo() { printf("%s", "Foo called"); } int main(int argc, char** argv) { if(argc > 1) TEST_DO; /* LINE 12 */ else printf("%s", "skipping..."); return 0; } If you put TEST at line 12, a compiler will give an error "error: ‘else’ without a previous ‘if’". Hope, this will help someone.

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  • win32 API vs Linux Kernel API

    - by Nik
    Is there anything that can be done using Win32 API that cannot be done using Linux kernel API. I'm asking this, because back in Lab where I work we use Ixia and Agilent Technologies H/W. and these H/W (Signal processes or Packet generator) worth 10s of thousand of Dollars run windows as their OS. Why didn't they choose Linux. I've seen Linux in routers and firewall but not in real Heavy duty H/W like Ixia. This preference of windows over Linux made me think is there any limitation in Linux API or its just licensing thing.

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  • WPF WIN32 hwndhost WM_MOUSEMOVE WM_MOUSEHOVER

    - by Neil B
    I have a WPF app with a usercontrol that contains a HwndHost. The HwndHost is created as follows: hwndHost = CreateWindowEx(0, "static", "", WS_CHILD | WS_VISIBLE, 0, 0, hostHeight, hostWidth, hwndParent.Handle, (IntPtr)HOST_ID, IntPtr.Zero, 0); hwndControl = CreateWindowEx(0, "Static", "", WS_CHILD | WS_VISIBLE | WS_CLIPCHILDREN , 0, 0, hostHeight, hostWidth, hwndHost, (IntPtr)PICTUREBOX_ID, IntPtr.Zero, 0); I then hook into the message pump using HwndSourceHook and loads of messages come through. Except the ones I want i.e. WM_MOUSEMOVE, WM_MOUSEHOVER, WM_LBUTTONDOWN and WM_LBUTTONUP Also the OnMouseLeftButtonDown event is not fired in the WPF code on the main window or the control, I assume because windows is trapping it and throwing it away. Anybody know how I can get these to come through, either with or without using the WIN32 window messages?

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  • Any Win32 APIs to get the screenshots?

    - by Microkernel
    Hi all, I am writing an app, which needs to take the screen shots automatically (just like pressing PrintScreen button). So please suggest me how to get this done. A raw 24 bit BMP image would suffice. PLEASE NOTE: My app is in C, so any win32 APIs that can be called from my code is what I am looking for. (Sometimes back I had got an example code from codeproject which used to get the screen shots but the mouse pointer user to blink when the screen shot is taken. As multiple shots are taken this looks irritating to the user, so I don't want the mouse pointer to blink!) Regards, Chethan KR

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  • reference other projects in visual studio for win32 projects

    - by Vineel Kumar Reddy
    Hi All I am working with win32 API and my language of choice is pure C and no C++. Assume I have a project A that is present in Solution S in visual studio I want to add another project B(which has some common utility functions) in to S Now I want to reference Project B in Project A... So that I can use those utility functions from Project B source code level. I dont want it be used against dll of Project B assume project B contains some math related functions and i want to call the functions from Project A or project B contains come data structures and i want to make use of them in Project A How to achieve this.... thanks in advance

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  • Win32 select/poll/eof/ANYTHING!?!?!

    - by Andrew
    Using the standard Win32 file I/O API's (CreateFile/ReadFile/etc), I'm trying to wait for a file to become readable, or for an exception to occur on the file. If Windows had any decent POSIX support, I could just do: select(file_count, files_waiting_for_read, NULL, files_waiting_for_excpt, NULL, NULL); And select will return when there's anything interesting on some of the files. Windows doesn't support select or poll. Fine. I figured I could take the file and do something like: while(eof(file_descriptor)) { Sleep(100); } The above loop would exit when more data is available to be read. But nope, Windows doesn't have an equivalent of eof() either! I could possibly call ReadFile() on the file, and determine if it's at the eof that way. But, then I'd have to handle the reading at that point in time -- I'm hoping to simply be able to figure out that a file is readable, without actually reading it. What are my options?

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  • Implementation code for GetDateFormat Win32 function

    - by morpheous
    I am porting some legacy code from windows to Linux (Ubuntu Karmic to be precise). I have come across a Win32 function GetDateFormat(). The statements I need to port over are called like this: GetDateFormat(LOCALE_USER_DEFAULT, 0, &datetime, "MMMM", 'January', 31); OR GetDateFormat(LOCALE_USER_DEFAULT, 0, &datetime, "MMMM", 'May', 30); Where datetime is a SYSTEMTIME struct. Does anyone know where I can get the code for the function - or failing that, tips on how to "roll my own" equivalent function?

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  • Win32 Thread Exits Unexpectedly

    - by sahs
    Hello, I'm writing a C++ application. I realized that one of my worker threads may terminate unexpectedly. The (VS 2005) debug log says: The thread 'Win32 Thread' (0x5d98) has exited with code -858993460 (0xcccccccc). I surrounded all the worker thread code with a try/catch block. So, if the reason was an exception, I would catch it. But I can't: try{ ... Connection* conn = connectionPool->getConnection(); // unexpected exit occurs here ... } catch(exception& e) { ... } I have ten threads running concurrently, and only one of them gets crashed after some time, while the others continue running (and getting new [OCCI] connections). Is there an exception type that is not caught by "exception"? Or what do I not know about threads/exceptions? Thanks.

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  • How to call in C# function from Win32 DLL with custom objects

    - by marko
    How to use in C# function from Win32 DLL file made in Delphi. When function parameters are custom delphi objects? Function definition in Delphi: function GetAttrbControls( Code : PChar; InputList: TItemList; var Values : TValArray): Boolean; stdcall; export; Types that use: type TItem = packed record Code : PChar; ItemValue: Variant; end; TItemList = array of TItem; TValArray = array of PChar; Example in C# (doesn't work): [StructLayout(LayoutKind.Sequential)] public class Input { public string Code; public object ItemValue; }; [DllImport("Filename.dll", EntryPoint = "GetValues", CharSet = CharSet.Ansi, ExactSpelling = true, CallingConvention = CallingConvention.Cdecl)] public static extern bool GetValues(string Code, Input[] InputList, ref StringBuilder[] Values);

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