public Image CaptureWindow(IntPtr handle)
{
IntPtr windowDC = ScreenCapture.User32.GetWindowDC(handle);
ScreenCapture.User32.RECT rect = default(ScreenCapture.User32.RECT);
ScreenCapture.User32.GetWindowRect(handle, ref rect);
int nWidth = rect.right - rect.left;
int nHeight = rect.bottom - rect.top;
IntPtr intPtr = ScreenCapture.GDI32.CreateCompatibleDC(windowDC);
IntPtr intPtr2 = ScreenCapture.GDI32.CreateCompatibleBitmap(windowDC, nWidth, nHeight);
IntPtr hObject = ScreenCapture.GDI32.SelectObject(intPtr, intPtr2);
ScreenCapture.GDI32.BitBlt(intPtr, 0, 0, nWidth, nHeight, windowDC, 0, 0, 13369376);
ScreenCapture.GDI32.SelectObject(intPtr, hObject);
ScreenCapture.GDI32.DeleteDC(intPtr);
ScreenCapture.User32.ReleaseDC(handle, windowDC);
Image result = Image.FromHbitmap(intPtr2);
ScreenCapture.GDI32.DeleteObject(intPtr2);
return(result);
}
public static extern IntPtr GetWindowRect(IntPtr hWnd, ref ScreenCapture.User32.RECT rect);
