C# 선택 영역 색상 반전

        void timer_Tick(object sender, EventArgs e)
        {
            if (this.selectedFigure == null)
                return;

            using (Graphics g = this.panel_drawPaper.CreateGraphics())
            {
                Global global = Global.GetInstance();
                
                Point point = this.PointToScreen(this.selectedFigure.Location);
                point =new Point(point.X-2, point.Y-2);

                Rectangle rect = new Rectangle(point, new Size(global.DrawManager.DrawSize+5, global.DrawManager.DrawSize+5));

                ControlPaint.FillReversibleRectangle(rect, Color.Black);
            }
        }

 

ControlPaint Class의 FillReversibleRectangle 메서드를 이용하면 사각 영역의 해당 색상을 반전시키고,

DrawReversibleFrame 메서드는 사각 영역의 라인의 색상만 반전시킨다.