internal static extern int UpdateLayeredWindow( IntPtr hwnd, IntPtr hdcDst, [In] ref Point pptDst, [In] ref Size psize, IntPtr hdcSrc, [In] ref Point pptSrc, int crKey, [In] ref Blendfunction pblend, int dwFlags);
public static extern Bool UpdateLayeredWindow(IntPtr hwnd, IntPtr hdcDst, ref Point pptDst, ref Size psize, IntPtr hdcSrc, ref Point pprSrc, Int32 crKey, ref Blendfunction pblend, Int32 dwFlags);
public static extern Bool UpdateLayeredWindow(IntPtr hwnd, IntPtr hdcDst, ref Point pptDst, ref Size psize, IntPtr hdcSrc, ref Point pprSrc, int crKey, ref Blendfunction pblend, int dwFlags);