MikelSV

    int Grab(HWND hwnd){
        if(!hwnd) return 0;
        UGLOCK(*this);

        MRect rc; GetWindowRect(hwnd, rc);
        HDC dc = GetWindowDC(hwnd);
        if(!dc) return 0;

        // Create compatible DC
        HDC cdc = CreateCompatibleDC(dc);

        // Create a compatible bitmap
        HBITMAP bmp = CreateCompatibleBitmap(dc, rc.GetW(), rc.GetH());

        // Select Bitmap
        SelectObject(cdc, bmp);

        // Copy pixels from screen to the BITMAP
        if(!BitBlt(cdc, 0, 0, rc.GetW(), rc.GetH(), dc, 0, 0, SRCCOPY)) return 0;

        int ret=NewHImage(bmp);

        DeleteObject (bmp);
        // Delete the hBitmapdc as you no longer need it
        DeleteDC(cdc);
        // Release the desktop device context handle
        ReleaseDC(hwnd, dc);
        return ret;
}