// 取得視訊裝置驅動程式的資訊
    dwDriverIndex = 0;
    if (capGetDriverDescription(dwDriverIndex, szDeviceName, sizeof(szDeviceName),
        szDeviceVersion, sizeof(szDeviceVersion)))
        {
        lblCapDriverName->Caption = szDeviceName;
        lblCapDriverVer->Caption = szDeviceVersion;
        }

    // 建立視訊擷取視窗
    hwndVideo = capCreateCaptureWindow(
                (LPSTR) "My Capture Window",WS_CHILD | WS_VISIBLE,
                10, 10, iImageWidth, iImageHeight, Form1->pnlCapture->Handle, 1);

    // connect to the driver
    capDriverConnect(hwndVideo, dwDriverIndex);

    if (capDriverGetCaps(hwndVideo,&s,sizeof(s)))
        {
        if ( s.fHasOverlay )
            lblOverlay->Caption = AnsiString("Overlay: Yes");
        else lblOverlay->Caption = AnsiString("Overlay: No");

        if ( s.fHasDlgVideoSource )
            lblDlgVideoSource->Caption = AnsiString("Video Source Dialog: Yes");
        else
            {
            lblDlgVideoSource->Caption = AnsiString("Video Source Dialog: No");
            VideoSource1->Enabled = false;
            }

        if ( s.fHasDlgVideoFormat )
            lblDlgVideoFormat->Caption = AnsiString("Video Format Dialog: Yes");
        else
            {
            lblDlgVideoFormat->Caption = AnsiString("Video Format Dialog: No");
            VideoFormat1->Enabled = false;
            }

        if ( s.fHasDlgVideoDisplay )
            lblDlgVideoDisplay->Caption = AnsiString("Video Display Dialog: Yes");
        else
            {
            lblDlgVideoDisplay->Caption = AnsiString("Video Display Dialog: No");
            VideoDisplay1->Enabled = false;
            }

        if ( s.fCaptureInitialized )
            lblCaptureInitialized->Caption = AnsiString("Capture Initialized: Yes");
        else lblCaptureInitialized->Caption = AnsiString("Capture Initialized: No");

        if ( s.fDriverSuppliesPalettes )
            lblDriverSuppliesPalettes->Caption = AnsiString("Driver Supplies Palettes: Yes");
        else lblDriverSuppliesPalettes->Caption = AnsiString("Driver Supplies Palettes: No");
        }
    else ShowMessage("Capture Window does not connect to any Capture Driver");

    capDriverConnect(hwndVideo, dwDriverIndex);
    if (!capDriverConnect(hwndVideo, dwDriverIndex)) {
        // ---- Unable to connect to driver
        return;
    }

    // set preview rate to 33.3 miliseconds, or 30 FPS
    capPreviewRate(hwndVideo, 66);
    // start preview video
    capPreview(hwndVideo, true);
    capPreviewScale(hwndVideo, true);