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  • Win32 Window Menu is appearing along left side instead of across top of window

    - by Khat
    I think I may be using a wrong window style or something or maybe just adding the menu to the window incorrectly. I'll post a link to an image here so you can see what I mean about the menu not diplaying correctly: http://img707.imageshack.us/img707/4828/wtfmenu.jpg And here's a link to the code that creates the menu and the window: http://pastebin.com/CBrSVXUD I'm sure I'm missing something simple and dumb in the labyrinth of styles, settings and etc that are part and parcel for the Win32 API. Has anyone seen this before and know what I'm doing wrong? I just want a 'normal' menu bar along the top, snug against the title bar. Thanks in advance for any advice.

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  • How to abort shutdown in Windows (XP|Vista) programatically?

    - by Piskvor
    I want to be able to detect and abort OS shutdown from my application, preferably by using the Windows API. I know that it is possible to do this manually using the command shutdown -a In the worst case, I could ShellExecute this, but I was wondering if there was a better way. Also, how do I find out programatically that the OS is about to shut down, via the Win32 API?

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  • Windows API geting HWND

    - by Stacker
    im developing a piece of software to inset some text in a richedit of another program the code goes like this : atlfe = FindWindowEx(wtlsplitterwindow, 0, "atl:0087d7a8" , null); this is only one line: this works fine , problem is with every release of the program this number ""atl:0087d7a8" changes so i have to use spy++ to get the new one and change it in the code. the question is , is there is any way i can get that number from code? by the way im using C#, vs2010 thanks.

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  • How to remove the MenuBar of an application using windows API ?

    - by karthik
    I am using the below code to remove the Title Bar of an application, which is working perfectly for notepad. Now i want to remove the Menu Bar also. How to achieve it ? //Finds a window by class name [DllImport("USER32.DLL")] public static extern IntPtr FindWindow(string lpClassName, string lpWindowName); //Sets a window to be a child window of another window [DllImport("USER32.DLL")] public static extern IntPtr SetParent(IntPtr hWndChild, IntPtr hWndNewParent); //Sets window attributes [DllImport("USER32.DLL")] public static extern int SetWindowLong(IntPtr hWnd, int nIndex, int dwNewLong); //Gets window attributes [DllImport("USER32.DLL")] public static extern int GetWindowLong(IntPtr hWnd, int nIndex); [DllImport("user32.dll", EntryPoint = "FindWindow", SetLastError = true)] static extern IntPtr FindWindowByCaption(IntPtr ZeroOnly, string lpWindowName); //assorted constants needed public static int GWL_STYLE = -16; public static int WS_BORDER = 0x00800000; //window with border public static int WS_DLGFRAME = 0x00400000; //window with double border but no title public static int WS_CAPTION = WS_BORDER | WS_DLGFRAME; //window with a title bar public void WindowsReStyle() { Process[] Procs = Process.GetProcesses(); foreach (Process proc in Procs) { if (proc.ProcessName.StartsWith("notepad")) { IntPtr pFoundWindow = proc.MainWindowHandle; int style = GetWindowLong(pFoundWindow, GWL_STYLE); SetWindowLong(pFoundWindow, GWL_STYLE, (style & ~WS_CAPTION)); } } }

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  • Intercept keystrokes to a window

    - by MTsoul
    Is it possible to intercept a keystroke (and characters) sent to a window? By intercept, I mean play man-in-the-middle, instead of having just hooks onto the Window. I'd like to filter (i.e. eliminate some keystrokes) keystrokes to a window.

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  • Application built using VS2010 does not work in VS-Express2008 - C

    - by Jamie Keeling
    Hello, I have wrote an application that consists of two projects in a solution, each project contains only 1 .c source file. I was using Visual Studio 2010 Ultimate but due to the University only supporting 2008 I decided to create a blank solution and copy the source files into the new one. After creating a new solution in VS2008 express, creating two projects and re-creating and adding the source files to the projects I ran the application. For some reason only one part of the application does not work, I use CreateProcess() to execute "Project1.exe" from Project 2. This works fine under vs2010 but for some reason it's not working under VS2008 express, GetLastError() is showing an Error 2: File Not Found. This is an image showing the same code in both IDE's: I'm not using anything special and I've made sure that both solutions/projects are using .Net 3.5. I can't work out why it would work for one IDE and not the other. Any suggestions? Thanks!

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  • Per-process CPU usage on Win95 / Win98 / WinME

    - by Hugh Allen
    How can you programmatically measure per-process (or better, per-thread) CPU usage under windows 95, windows 98 and windows ME? If it requires the DDK, where can you obtain that? Please note the Win9x requirement. It's easy on NT. EDIT: I tried installing the Win95/98 version of WMI, but Win32_Process.KernelModeTime and Win32_Process.UserModeTime return Null (as do most Win32_Process properties under win9x).

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  • How to catch exceptions from another program (for logging)?

    - by CuriousCoder
    I am working on a tool that monitors a number of applications and ensures they are always running and in a clean state. Some of these applications have unhandled exceptions which do occur periodically and present the 'send crash report' window. I do not have the source code to these applications. Is there any mechanism I could use to catch the exceptions, or simply identify their exception type, as well as identify the application's main executable file that threw the exception. I'm not trying to do anything crazy like catch and handle it on the applications behalf, I'm simply trying to capture the exception type, log it and then restart the application.

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  • Custom Message Box: Windows' "Move Cursor to Default Button" Feature

    - by Andreas Rejbrand
    In Microsoft Windows, there is a (highly useful) feature that automatically moves the cursor to the default button of a modal dialog box (activated in Win+R, "control mouse"). Now I have created a custom dialog box in Delphi (basically a TForm), see below. But, quite naturally, the cursor does not automatically move to the default button ("Yes" in this case), even though the feature is turned on in "control mouse". How to implement this feature using Windows API? I guess it would be sufficient to obtain the settings as a boolean (true if feature activated, false if not), and then simply move the cursor programmatically using SetCursorPos if true. But how to obtain this setting?

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  • Making an owner-draw button transparent against its arbitrary background in WINCE

    - by EndsOfInvention
    Hi I am trying to place an owner-draw button transparently onto a background. I have no trouble doing this when the background is a solid colour but if the background is an image I cannot seem to get the correct HDC (handle to device context) to Bitblt() the area that button covers. The HDC that is passed as part of the DRAWITEMSTRUCT gives me a button-default-grey area. If I attempt to get the parent of the HWND and then the device context of that i.e pdc = GetDC(GetParent(hWnd)); then the background that gets BitBlt'd is the background of the last painted window. I hope this question makes sense. this is the code I have: pdis = (LPDRAWITEMSTRUCT)(lParam); hdc = pdis->hDC; button = pdis->CtlID - IDC_BUTOFFSET; //pdc = GetDC((hWnd)); pdc = GetDC(GetParent(hWnd)); hbm = CreateCompatibleBitmap(pdc, Buttons_[button]->bc.Size.cx, Buttons_[button]->bc.Size.cy); SelectObject(hdc, hbm); BitBlt(hdc, 0, 0, Buttons_[button]->bc.Size.cx, Buttons_[button]->bc.Size.cy, pdc, Buttons_[button]->bc.Position.x, Buttons_[button]->bc.Position.y, SRCCOPY); TIA Best regards Ends

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  • Concept of WNDCLASSEX, good programming habits and WndProc for system classes

    - by luiscubal
    I understand that the Windows API uses "classes", relying to the WNDCLASS/WNDCLASSEX structures. I have successfully gone through windows API Hello World applications and understand that this class is used by our own windows, but also by Windows core controls, such as "EDIT", "BUTTON", etc. I also understand that it is somehow related to WndProc(it allows me to define a function for it) Although I can find documentation about this class, I can't find anything explaining the concept. So far, the only thing I found about it was this: A Window Class has NOTHING to do with C++ classes. Which really doesn't help(it tells me what it isn't but doesn't tellme what it is). In fact, this only confuses me more, since I'd be tempted to associate WNDCLASSEX to C++ classes and think that "WNDCLASSEX" represents a control type . So, my first question is What is it? In second place, I understand that one can define a WndProc in a class. However, a window can also get messages from the child controls(or windows, or whatever they are called in the Windows API). How can this be? Finally, when is it a good programming practise to define a new class? Per application(for the main frame), per frame, one per control I define(if I create my own progress bar class, for example)? I know Java/Swing, C#/Windows.Form, C/GTK+ and C++/wxWidgets, so I'll probably understand comparisons with these toolkits.

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  • how come we need not close the handle returned by ShellExecute ?

    - by fred-hh
    On success, ShellExecute returns a handle. Do we need to close this handle, and if so, how ? According to examples published my Microsoft, we need not close this handle. But the doc of ShellExecute itself is mute on the subject. Can you confirm we indeed do not need to close this handle ? But then, how can a handle be valid and in no need of being closed ??? Which of the following statements is/are true: the handle is invalid and we can't do anything with it; the handle is never freed and there is a (Microsoft-sponsored) memory leak (until the caller program ends); the handle is automatically freed by the system at some time and never reused afterwards (- another kind of resource leak). Only on trying to use it can we know whether it still points to something. what else ?

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  • Update of application Icon in Windows-7 Taskbar

    - by Florian W.
    I have a normal MFC Application with an embedded icon. If I start the application, the icon is shown inside the windows-7 taskbar. But when I change the icon inside the resources, rebuild the application and start it, the taskbar doesn't show the current icon, but the icon from the first run. There is no special code inside the application that does something specific with the windows-7 taskbar. Is there a way, (in C++) to tell the windows-7 taskbar to show the current icon?

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  • SwapBuffers causes redraw

    - by user146780
    I'm making a Win32 application with OpenGL in the main window (not using GLUT). I have my drawing code in WM_PAINT right now when I call swapBuffers it must be invalidating itself because it is constantly rerendering and using lots of cpu resources. How can I make it only render when it honestly receives WM_PAINT like when using GDI? Thanks

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  • How to set a sorting mode in Open Dialog

    - by Serg
    A user can manually sort files in a standard Windows Open Dialog (in "Details" view mode) by Name, Date or Size by clicking on the corresponding column header. How to set a sorting mode in Open Dialog (TOpenDialog class in Delphi) programmatically in application so that the dialog opens with a preferred sorting?

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  • Get specific process memory space

    - by Saul Rennison
    Hi, I have a pointer (void *) to a function and I want to know which process this function belongs to. I have no idea which way to go about it, but I think it's possible by using some form of VirtualQuery trickery. Any help would be appreciated. Thanks in advance,

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  • Qt grabWindow coordinates shifted from GetCursorPos and GetWindowRect

    - by user1391
    In Qt, when I use the QPixmap::grabWindow(hwnd,x,y,h,w) function, the coordinates are shifted slightly, when compared to the coordinates using the windows api functions GetCursorPos and GetWindowRect. i.e. (0,0) from the point of view of GetCursorPos and GetWindowRect is at the very top left of the toolbar at the top of the window. But (0,0) for QPixmap::grabWindow is more "inside" (i.e. ignoring the window frame). How can I make these 2 coordinates consistent? Especially since the user might have different thicknesses for the window frame?

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  • SwapBuffers calls itself

    - by user146780
    I'm making a Win32 application with OpenGL in the main window (not using GLUT). I have my drawing code in WM_PAINT right now when I call swapBuffers it must be invalidating itself because it is constantly rerendering and using lots of cpu resources. How can I make it only render when it honestly receives WM_PAINT like when using GDI? Thanks

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  • How do I patch a Windows API at runtime so that it to returns 0 in x64?

    - by Jorge Vasquez
    In x86, I get the function address using GetProcAddress() and write a simple XOR EAX,EAX; RET; in it. Simple and effective. How do I do the same in x64? bool DisableSetUnhandledExceptionFilter() { const BYTE PatchBytes[5] = { 0x33, 0xC0, 0xC2, 0x04, 0x00 }; // XOR EAX,EAX; RET; // Obtain the address of SetUnhandledExceptionFilter HMODULE hLib = GetModuleHandle( _T("kernel32.dll") ); if( hLib == NULL ) return false; BYTE* pTarget = (BYTE*)GetProcAddress( hLib, "SetUnhandledExceptionFilter" ); if( pTarget == 0 ) return false; // Patch SetUnhandledExceptionFilter if( !WriteMemory( pTarget, PatchBytes, sizeof(PatchBytes) ) ) return false; // Ensures out of cache FlushInstructionCache(GetCurrentProcess(), pTarget, sizeof(PatchBytes)); // Success return true; } static bool WriteMemory( BYTE* pTarget, const BYTE* pSource, DWORD Size ) { // Check parameters if( pTarget == 0 ) return false; if( pSource == 0 ) return false; if( Size == 0 ) return false; if( IsBadReadPtr( pSource, Size ) ) return false; // Modify protection attributes of the target memory page DWORD OldProtect = 0; if( !VirtualProtect( pTarget, Size, PAGE_EXECUTE_READWRITE, &OldProtect ) ) return false; // Write memory memcpy( pTarget, pSource, Size ); // Restore memory protection attributes of the target memory page DWORD Temp = 0; if( !VirtualProtect( pTarget, Size, OldProtect, &Temp ) ) return false; // Success return true; } This example is adapted from code found here: http://www.debuginfo.com/articles/debugfilters.html#overwrite .

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