pCde);

    if (FAILED(hr))

        return false;

    pCde->CreateClassEnumerator(CLSID_VideoInputDeviceCategory

        , &pEm, 0);

    if(pEm==NULL)

        return false;



    CComPtr <IMoniker> pM=NULL;

    ULONG cFetched;

    CComPtr<IBaseFilter> pBf=NULL;

    if(pEm->Next(1,&pM,&cFetched)==S_OK)

    {

        pM->BindToObject(0,0,IID_IBaseFilter, (void**)&pBf);

        pM.Release();

    }

    else

    {

        return false;

    }

    //将设备添加到graph

    hr = m_pGraph->AddFilter(pBf, L"Video Capture");

    if (FAILED(hr))

        return false;

    //连接一个源插口

    hr=m_pCapture->RenderStream(&PIN_CATEGORY_PREVIEW,&MEDIATYPE_Video

        ,pBf,NULL,NULL);

    if (FAILED(hr))

        return false;



    pBf.Release();

//设定视频窗口

    //设定视频窗口为主窗口的一个子窗口

    hr=m_pVW->put_Owner((OAHWND)hWnd);

    if (FAILED(hr))

        return false;

    //设定窗口样式

    m_pVW->put_WindowStyle(WS_CHILD | WS_CLIPCHILDREN);

    if (FAILED(hr))

        return false;

    //设定窗口大小

    CRect rectClient;

    GetClientRect(hWnd,rectClient);

    m_pVW->SetWindowPosition(0, 0, 320, 240);

    //设定可视

    hr=m_pVW->put_Visible(OATRUE);

    if (FAILED(hr))

        return false;

    //将对象加入到运行对象列表中

    CComPtr<IRunningObjectTable> pROT;

    GetRunningObjectTable(0,&pROT);

    WCHAR c[128];

    wsprintfW(c, L"FilterGraph %08x pid %08x\0", (DWORD_PTR)m_pGraph.p,

              GetCurrentProcessId());



    hr = CreateItemMoniker(L"!",c,&pM);

    if (FAILED(hr))

        return false;



    hr = pROT->Register(ROTFLA