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();