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void PrintCallback::AnalyzeFrame(CTestColorPoolDlg* pDlg, const VideoFrameRef& frame)
{
    int h = frame.getHeight();
    int w = frame.getWidth();
    RGB888Pixel* pColor = NULL;

    CClientDC dc(pDlg);
    CDC memDC;
    memDC.CreateCompatibleDC(&dc);

    CBitmap bmp;
    bmp.CreateCompatibleBitmap(&dc, h, w);
    memDC.SelectObject(&bmp);

    BITMAPINFO bmpInfo;
    bmpInfo.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
    bmpInfo.bmiHeader.biWidth = h;
    bmpInfo.bmiHeader.biHeight = -w;
    bmpInfo.bmiHeader.biPlanes = 1;
    bmpInfo.bmiHeader.biBitCount = 24;
    bmpInfo.bmiHeader.biCompression = BI_RGB;
    bmpInfo.bmiHeader.biSizeImage = 0;
    bmpInfo.bmiHeader.biXPelsPerMeter = 50;
    bmpInfo.bmiHeader.biYPelsPerMeter = 50;
    bmpInfo.bmiHeader.biClrUsed = 0;
    bmpInfo.bmiHeader.biClrImportant = 0;

    long nLnBytes = (bmpInfo.bmiHeader.biWidth * 3 + 3) / 4 * 4;
    BYTE* pData = new BYTE[nLnBytes * abs(bmpInfo.bmiHeader.biHeight)];

    memset(pData, 0, nLnBytes * abs(bmpInfo.bmiHeader.biHeight));

    switch (frame.getVideoMode().getPixelFormat())
    {
    case PIXEL_FORMAT_RGB888:
        pColor = (RGB888Pixel*)frame.getData();  // get array' address of image that in pixels
        // traverses the pixels according to the height and width of the image
        for (int i = 0; i < h; i++)
        {
            for (int j = 0; j < w; j++)
            {
                COLORREF& d = (COLORREF&)pColor[i * w + j];  // mandatory reference  3bytes? 4bytes? 

                pData[i * nLnBytes + j * 3 + 1] = GetGValue(d);    //g
                pData[i * nLnBytes + j * 3 + 2] = GetRValue(d);      //r
                pData[i * nLnBytes + j * 3 + 3] = GetBValue(d);      //b                
            }
        }
        SetDIBits(dc.m_hDC, bmp, 0, abs(bmpInfo.bmiHeader.biHeight), pData, &bmpInfo, DIB_RGB_COLORS);
        delete[]pData;
        dc.BitBlt(0, 0, bmpInfo.bmiHeader.biWidth, abs(bmpInfo.bmiHeader.biHeight), &memDC, 0, 0, SRCCOPY);
        break;
    default:
        ::MessageBox(pDlg->GetSafeHwnd(), L"Unknown format\n", _T("错误提示"), MB_OK);
        break;
    }
}