MessageBox is a modal dialog, the function does not return until the dialog has been closed. Multiple MessageBoxs can only be created if you have multiple threads in your process. MessageBox is a special version of DialogBox. You can use CreateDialog to create modeless dialogs but you should not show many dialogs to the user … Read more
Here is, what I needed. String GetFullHKEY (HKEY hKeyRoot) { if (HKEY_LOCAL_MACHINE == hKeyRoot) return _T(“HKEY_LOCAL_MACHINE\\”); if (HKEY_CLASSES_ROOT == hKeyRoot) return _T(“HKEY_CLASSES_ROOT\\”); if (HKEY_CURRENT_CONFIG == hKeyRoot) return _T(“HKEY_CURRENT_CONFIG\\”); if (HKEY_CURRENT_USER == hKeyRoot) return _T(“HKEY_CURRENT_USER\\”); if (HKEY_USERS == hKeyRoot) return _T(“HKEY_USERS\\”); } bool RegistryGoTo (HKEY hKeyRoot, const String &lpctPath, String lpctValue) { if (lpctPath.empty() || 0 … Read more
It’s not possible for an already-running process to be elevated (or, as far as I know, restricted further). It can be faked by having an already-running process spawn a new elevated process and then communicate with that new process but that only works if you control the code of the program that you wish to … Read more
Try this (untested): PlaySound (TEXT(“1.wav”), NULL, SND_FILENAME | SND_ASYNC); Documented at MSDN (read it!) 11 solved Using Multi Threading in Win32 Api [closed]
Introduction Multi-threading is a powerful tool for improving the performance of applications. It allows multiple tasks to be executed simultaneously, thus reducing the amount of time required to complete a task. The Win32 API provides a set of functions that allow developers to create and manage multiple threads in their applications. In this article, we … Read more
Well I just had a quick look at that monstrosity, and I’m not going to look too far into it but right off the bat I see a problem. I don’t know if this is related to this particular problem you are asking about, but this type of thing isn’t going to work the way … Read more
Microsoft fixed it in 10.0.14393. You should have nothing in your client’s network now with a lower build number unless they are on LTSB 10.0.10240. This is the solution: DPI aware screen capture solved High DPI scaling, mouse hooks and WindowFromPoint
The error is telling you that your declaration of MonitorFromWindow conflicts with the prior declaration. The prior declaration in Winuser.h declared the function with extern “C” linkage, is __declspec(dllimport) and has the __stdcall calling convention. You should remove your erroneous declaration and use that from the header file. 15 solved Windows7.1 SDK: C2373: “MonitorFromWindow” Redefinition
It not exactly solution, but: Raymond Chen(Microsoft winapi guru*) is most close in spirit to the problem I facing, helping me detect in what mode or circumstances I run my console session. How can I tell whether my console program was launched from Explorer or from a command prompt? printf(“this process = %d\n”, GetCurrentProcessId()); DWORD … Read more
As specified by @BarmakShemirani , I shall use Unicode function as wcout or wcscmp. Thanks. 4 solved C++ Process32Next only returns the same process
DrawText doesn’t work like printf or something like that. I advise you to look at the MSDN: MSDN: DrawText int DrawText( _In_ HDC hDC, _Inout_ LPCTSTR lpchText, _In_ int nCount, _Inout_ LPRECT lpRect, _In_ UINT uFormat ); You need to make a conversion to LPCTSTR, you can have a look into Google, if I find … Read more
If the foreground app is using standard Win32 UI controls, then try this: use GetForegroundWindow() to get the HWND of the foreground window. then use GetWindowThreadProcessId() and GetGUIThreadInfo() to get the foreground window’s currently focused child control. then use GetClassName() to check if it is a standard EDIT control (this check might fail in some … Read more
This is a very confusing question as it asks one question in the title, but the content addresses a different problem (threads crashing). To address the primary question: Microsoft did add a way to handle socket communications in a GUI thread friendly way: WSAAsyncSelect. This will send socket events as messages to your applications message … Read more
Here is the sample code in C++,(Removed error checking) MainWindow.cpp: #include <windows.h> #include <iostream> LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam) { switch (message) { case WM_DESTROY: PostQuitMessage(0); break; default: return DefWindowProc(hWnd, message, wParam, lParam); } return 0; } DWORD WINAPI createyourwindow(LPVOID param) { WNDCLASSEXW wcex = { 0 }; wcex.cbSize = … Read more
First, fgets will get a string with charactor ‘\n’ when size of inserted string <(255-1). So, let’s set the \n to \0: fgets(cmd, 255, stdin); cmd[strlen(cmd) – 1] = ‘\0’; CreateProcess(cmd, NULL, NULL, NULL, FALSE, 0, NULL, NULL, &si, &pi); Second, more instances of cmd to popup in the command line. If what you mean … Read more