3-8 两套消息循环体系

两套消息循环体系

1.GetMessage——阻塞式

BOOL GetMessage(
  [out]          LPMSG lpMsg,
  [in, optional] HWND  hWnd,
  [in]           UINT  wMsgFilterMin,
  [in]           UINT  wMsgFilterMax
);

2.PeekMessage——非阻塞式

BOOL PeekMessageW(
  [out]          LPMSG lpMsg,
  [in, optional] HWND  hWnd,
  [in]           UINT  wMsgFilterMin,
  [in]           UINT  wMsgFilterMax,
  [in]           UINT  wRemoveMsg
);
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