C / C++ / MFC

CRect rect;
HWND    hWnd = m_hWnd; // m_hWnd is hanle of scrollview.
if (hWnd == NULL) return;

HDC hScrollView = ::GetWindowDC(hWnd);
HDC hCaptureDC = CreateCompatibleDC(hScrollView);

CRect m_rDrawingSurface;
::GetWindowRect(hWnd,&m_rDrawingSurface);

BITMAPINFOHEADER BMIH;
HBITMAP m_hCaptureBitmap;
BYTE* m_pDrawingSurfaceBits;

CDC* pDC = GetDC();
if(pDC != NULL)
{
    BMIH.biSize = sizeof(BITMAPINFOHEADER);
    BMIH.biBitCount = 24;
    BMIH.biPlanes = 1;
    BMIH.biCompression = BI_RGB;
    BMIH.biWidth = m_rDrawingSurface.Width();
    BMIH.biHeight = m_rDrawingSurface.Height();
    BMIH.biSizeImage = ((((BMIH.biWidth * BMIH.biBitCount) + 31) & ~31) >> 3) * BMIH.biHeight;
    m_hCaptureBitmap = CreateDIBSection(pDC->GetSafeHdc(), (CONST BITMAPINFO*)&BMIH, DIB_RGB_COLORS, (void**)&m_pDrawingSurfaceBits, NULL, 0);
    ReleaseDC(pDC);
}

SelectObject(hCaptureDC,m_hCaptureBitmap);
BitBlt(hCaptureDC,
    0,
    0,
    m_rDrawingSurface.Width(),
    m_rDrawingSurface.Height(),
    hScrollView,0, 0,SRCCOPY|CAPTUREBLT);

CxImage *image = new CxImage();
if(m_hCaptureBitmap)
{
    image->CreateFromHBITMAP(m_hCaptureBitmap);
    bool retval;

    retval = image->Save("c:\\ss.bmp", CXIMAGE_FORMAT_JPG);
}
if (image) delete image;



::ReleaseDC(hWnd,hDesktopDC);
DeleteDC(hCaptureDC);
DeleteObject(m_hCaptureBitmap); :)