阻止WM_QUIT

Question

Quick question.

I have an app that use a native DLL through PInvoke, this DLL may call a PostQuitMessage().

How can I avoid it? (as my app should not close)

I tried AddMessageFilter, but it doesn't trigger the WM_QUIT.

Answer 1

Yup, IMessageFilter cannot work. WM_QUIT makes the GetMessage() function return FALSE. It never gets around to calling the message filter, the message loop immediately exits. Overriding WndProc() or canceling OnFormClosing() won't work either. The only workaround I can think of is Detours to disable PostQuitMessage(). That requires some C/C++ skillz.

Answer 2

如果从不拥有任何窗口的线程进行调用，则PostQuitMessage（）将无效。