public static __Point operator +(__Point pt, Size sz)
        {
            var p = new __Point(pt.X + sz.Width, pt.Y + sz.Height);


            return(p);
        }
        public static __Point operator +(__Point pt, Size sz)
        {
            var p = new __Point(pt.X + sz.Width, pt.Y + sz.Height);


            return p;
        }