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message loop

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The message loop is a core concept in Windows programming, referring to the continuous cycle that retrieves and dispatches messages from a thread's message queue. In the Windows API, functions like PeekMessage and GetMessage are used to process messages such as keyboard input or window events. Discussions on WindowsForum.com cover practical issues with message loops, including stalling the loop when filtering messages incorrectly, handling modeless dialog boxes, and integrating message loops with credential providers. Developers often need to ensure the message loop runs efficiently to prevent UI freezes or unexpected behavior, especially when combining custom loops with standard Windows messaging.
  1. Alex Sokolek

    A strange problem with modeless dialog boxes

    I have solved the problem! When the AI Bot told me that I was stalling the message loop, I looked deeper. In the original code I was calling PeekMessage() with PM_REMOVE, filtering for WM_KEYDOWN, and then checking for VK_ESCAPE. This consumed the WM_KEYDOWN message but not any other messages...
    • Alex Sokolek
    • Thread
    • build release debugging dialog box error handling file operations file system hashing memory issues memory management message loop modeless progress updates software optimization timer user interface visual studio vk_escape windows api wm_keydown
    • Replies: 6
    • Forum: Windows Software
  2. F

    Windows 11 Drawing a border and background color with a handle to a window.

    ``` #include <Windows.h> #include <Richedit.h> HWND hwnd; HWND panel; HWND richEdit; WNDPROC oldStaticProc; int WINAPI WinMain(HINSTANCE, HINSTANCE, PSTR, int); LRESULT CALLBACK WindowProcedure(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam); LRESULT CALLBACK StaticProc(HWND hwnd, UINT...
    • famatto
    • Thread
    • background border drawing c++ control handling device context error handling event gdi graphics message loop opengl paint handling rich edit static control user interface window procedure window resizing windows api wm_paint
    • Replies: 1
    • Forum: Programming and Scripting
  3. V

    Windows 7 Credential Provider problem on Windows 7

    Hello, I am a software developer and I encounter a LogonUI problem on Windows 7 when I use a credential provider in particular conditions. I have modified the SampleHardwareEventCredentialProvider sample of the RTMCredentialProviderSamples__FINAL archive (Link Removed). The original sample...
    • valaiden
    • Thread
    • asynchronous credential provider credentials list debugging developer support dynamic updates error handling logonui message loop performance issues programming remote reboot rtmcredential sample code software development system freeze user interface windows 7
    • Replies: 1
    • Forum: Programming and Scripting
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