About this tag
The wm_keydown tag covers discussions about handling the WM_KEYDOWN message in Windows programming, particularly in modeless dialog boxes. A common issue involves stalling the message loop when filtering for WM_KEYDOWN with PeekMessage and PM_REMOVE, which can consume the key-down message but leave other messages unprocessed. Solutions include removing message filtering to process all messages while still detecting WM_KEYDOWN and VK_ESCAPE. The tag is relevant for developers working with Win32 API, message loops, and keyboard input handling in Windows applications.
  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