nbsp; public:

  BEGIN_MSG_MAP(CVideoPlayerQT)

    MY_QT_MSG_HANDLE (NewProc)

  END_MSG_MAP()



protected:

    LRESULT NewProc(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);

  ……

  CQuickTime             m_QT;

……

}



CQuickTime为笔者调用QuickTime API的辅助类，后面将介绍。

NewProc成员函数根据接收不同的窗口消息分别调用不同的成员函数处理。

LRESULT CQTVideoWnd::NewProc(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)

{

     if(uMsg == WM_ERASEBKGND)

     {

       bHandled = FALSE;

       LRESULT theResult = DefWindowProc(uMsg, wParam, lParam);

       m_QT.ProcessMovieEvent (m_hWnd, uMsg, wParam, lParam);

       return theResult;

     }

     else

     {

       m_QT.ProcessMovieEvent (m_hWnd, uMsg, wParam, lParam);

       switch(uMsg)

         {

           case WM_CREATE:

             OnCreate(uMsg, wParam, lParam,bHandled);

                break;

           case WM_PAINT:

             OnPaint(uMsg, wParam, lParam,bHandled);

                break;

           case WM_DESTROY:

             OnDestroy(uMsg, wParam, lParam,bHandled);

                break;

           default:

             bHandled = FALSE;

                break;

         }

     }

     return 0;

     

}

其中OnCreate、OnPaint、OnDestroy等成员函数将根据2.2，分别调用辅助类CQuickTime处理。如

LRESULT CQTVideoWnd::OnCreate(UINT uMsg, WPARAM wParam , LPARAM lParam, BOOL& bHandled)

{

     m_QT.OnMovieWindowCreate(m_hWnd,NULL);

     return 0;

}



3.2 CQuickTime

     CQuickTime为调用QuickTime API函数的辅助类。

3.2.1初始化和退