在CStatic上显示视频

把视频显示在CStatic上，上一篇讲了怎么播放一个视频，但是如果要嵌在对话框之类的窗体上面的话，就需要用IVideoWindow接口，通过pWindow->put_Owner((OAHWND)m_Screen.GetSafeHwnd());就可以指定pWindow是显示在m_Screen控件上面了

    IGraphBuilder  * pGraph;
    IMediaControl  * pControl;
    IMediaEventEx    * pEvent;
    IVideoWindow   * pWindow;
HRESULT hr  =  CoInitialize(NULL);
     if  (FAILED(hr))
     {
        // Add error-handling code here. (Omitted for clarity.)
    }
    CoCreateInstance(CLSID_FilterGraph, NULL, CLSCTX_INPROC, 
                         IID_IGraphBuilder, ( void   ** ) & pGraph);
    pGraph -> QueryInterface(IID_IMediaControl,  ( void   ** ) & pControl);
    pGraph -> QueryInterface(IID_IVideoWindow,   ( void   ** ) & pWindow);
    pGraph -> QueryInterface(IID_IMediaEventEx, ( void   ** ) & pEvent);
    pEvent -> SetNotifyWindow((OAHWND)m_Screen.GetParent() -> m_hWnd, WM_GRAPHNOTIFY,  0 );
    hr  =  pGraph -> RenderFile(L " D:\\yf.avi " , NULL);
    m_Screen.ModifyStyle( 0 , WS_CLIPCHILDREN);
     if (pWindow)
     {
        //pWindow->put_MessageDrain((OAHWND) m_Screen.GetParent()->m_hWnd);
        pWindow->put_Owner((OAHWND)m_Screen.GetSafeHwnd());
        hr = pWindow->put_WindowStyle(WS_CHILD);
        

        CRect rc;
        
        m_Screen.GetClientRect(&rc);
        int width = rc.right - rc.left;
        int height = rc.bottom - rc.top;
        pWindow->SetWindowPosition(rc.left,rc.top,width,height);
        hr = pWindow->put_Visible(OATRUE);
        hr = pWindow->SetWindowForeground(-1);
    }
    pControl -> Run();