message-loop

While trying to port my game engine to mac, I stumble upon one basic (but big) problem. On windows, my main code looks like this (very simplified): PeekMessage(...) // check for windows messages switch (msg.message) { case WM_QUIT: ...; case WM_LBUTTONDOWN: ...; ... } TranslateMessage(&msg); DispatchMessage (&msg); for (std::vector<CMyBackgroundThread*>::iterator it = mythreads.begin(); it != mythreads.end(); ++it) { (*it)->processEvents(); } ... do other useful stuff like look if the window has resized and other stuff... drawFrame(); // draw a frame using opengl SwapBuffers(hDC); // swap

A background-thread can be configured to receive window messages. You would post messages to the thread using PostThreadMessage . What's the correct way to exit that message loop? Background Before you can post messages to a background thread, the thread needs to ensure that a message queue is created by calling PeekMessage : procedure ThreadProcedure; var msg: TMsg; begin //Call PeekMessage to force the system to create the message queue. PeekMessage(msg, NULL, WM_USER, WM_USER, PM_NOREMOVE); end; Now the outside world is able to post messages to our thread: PostThreadMessage(nThreadID, WM