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_tWinMain ->AfxWinMain ->AfxWinInit ->CWinThread::InitApplication ->CWinThread::InitInstance ->CWinThread::Run |
//thrdcore.cpp // main running routine until thread exits int CWinThread::Run() { ASSERT_VALID(this); // for tracking the idle time state BOOL bIdle = TRUE; LONG lIdleCount = 0; // acquire and dispatch messages until a WM_QUIT message is received. for (;;) { // phase1: check to see if we can do idle work while (bIdle && !::PeekMessage(&m_msgCur, NULL, NULL, NULL, PM_NOREMOVE)) { // call OnIdle while in bIdle state if (!OnIdle(lIdleCount++)) bIdle = FALSE; // assume "no idle" state } // phase2: pump messages while available do { // pump message, but quit on WM_QUIT if (!PumpMessage()) return ExitInstance(); // reset "no idle" state after pumping "normal" message if (IsIdleMessage(&m_msgCur)) { bIdle = TRUE; lIdleCount = 0; } } while (::PeekMessage(&m_msgCur, NULL, NULL, NULL, PM_NOREMOVE)); } //无限循环,退出条件是收到WM_QUIT消息。 ASSERT(FALSE); // not reachable } |
if (!PumpMessage()) return ExitInstance(); |
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