Monitor.CaptureWindow Method

public static Image CaptureWindow(IntPtr handle)
 {
     IntPtr hdcSrc = Import.GetWindowDC(handle);
     Enums.RECT windowRect = new Enums.RECT();
     Import.GetWindowRect(handle, out windowRect);
     int width = windowRect.Right - windowRect.Left;
     int height = windowRect.Bottom - windowRect.Top;
     IntPtr hdcDest = Import.CreateCompatibleDC(hdcSrc);
     IntPtr hBitmap = Import.CreateCompatibleBitmap(hdcSrc,
         width,
         height);
     IntPtr hOld = Import.SelectObject(hdcDest,
         hBitmap);
     Import.BitBlt(hdcDest, 0, 0,
         width,
         height, hdcSrc,
         0, 0,
         Constants.SRCCOPY);
     Import.SelectObject(hdcDest, hOld);
     Import.DeleteDC(hdcDest);
     Import.ReleaseDC(handle, hdcSrc);
     Image img = Image.FromHbitmap(hBitmap);
     Import.DeleteObject(hBitmap);
     return img;
 }