C/C++ SendMessage와 PostMessage의 차이

 

 

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출처: blog.naver.com/picbuddy/80107712981

void CMsgTestDlg::OnButton1() 
{
     m_strCall = "";
     m_strCall += "SendMessage호출전\r\n";
     UpdateData(FALSE);

     SendMessage(UM_MSG_SEND, NULL, NULL);

 

     m_strCall += "SendMessage호출후\r\n";
     UpdateData(FALSE);
}

 

void CMsgTestDlg::OnButton2() 
{
     m_strCall = "";
     m_strCall += "PostMessage호출전\r\n";
     UpdateData(FALSE);
 

     PostMessage(UM_MSG_SEND, NULL, NULL);
    

     m_strCall += "PostMessage호출후\r\n";
     UpdateData(FALSE);
}

 

LRESULT CMsgTestDlg::OnMessage(WPARAM wParam, LPARAM lParam)
{

     m_strCall += "호출함수 실행\r\n";
     UpdateData(FALSE);
    

     SleepX(3000);

     return 0;
}

 

void CMsgTestDlg::SleepX(DWORD dwDelay)
{
     // ReplyMessage(TRUE);

 

     DWORD dwBeginCount = GetTickCount();
     DWORD dwRecentCount;
     DWORD dwTime;
 
     while(1)
     {
          dwRecentCount = GetTickCount();
          dwTime = dwRecentCount - dwBeginCount;
  
          if(dwTime >= dwDelay)
               break;
          else // Message pumping
          {
               MSG   message;
               while(::PeekMessage(&message, NULL, 0, 0, PM_REMOVE))
               {
                    ::TranslateMessage(&message);
                    ::DispatchMessage(&message);
               }
          }
      }
}

 

 

 

 

출처: http://blog.naver.com/picbuddy/80107712981

 

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