CreateEvent 自动/手动重置的测试

  {
    HANDLE hEvent = CreateEvent(NULL, 
      FALSE, //automatically resets
      TRUE, //flag for initial state
      NULL);

    WaitForSingleObject(hEvent, -1); //此处正常退出，因为前面的初始值是TRUE
    SetEvent(hEvent); //设置事件
    WaitForSingleObject(hEvent, -1); //此处正常退出，因为前面的SetEvent
    WaitForSingleObject(hEvent, 2000); //此处会超时退出

    CloseHandle(hEvent);
  }  

  {
    HANDLE hEvent = CreateEvent(NULL, 
      TRUE, //manual-reset 
      TRUE, //flag for initial state
      NULL);
    
    WaitForSingleObject(hEvent, -1); //此处正常退出，因为前面的初始值是TRUE
    WaitForSingleObject(hEvent, -1); //此处正常退出，因为需要手动复位
    ResetEvent(hEvent); //重置事件
    WaitForSingleObject(hEvent, 2000); //此处会超时退出
    SetEvent(hEvent);
    WaitForSingleObject(hEvent, -1); //此处正常退出，因为前面的SetEvent
    
    CloseHandle(hEvent);
  }