请问自定义BUTTON有关问题，怎么画一个三角形的BUTTON

请教自定义BUTTON问题，如何画一个三角形的BUTTON
请教如何画将BUTTON画成三角形。

我想采用自定义BUTTON的形式，overwrite onpaint（）方法，实现BUTTON的形状改变。

现在不知道代码该怎么实现，请教大家。

[解决办法]

C# code

this.CreateGraphics().DrawLine(Pens.Black, new Point(100, 100), new Point(200, 200));            this.Refresh();            GraphicsPath gp = new GraphicsPath();            List<PointF> arrPoints = new List<PointF>();            arrPoints.Add(new PointF(0, 0));            arrPoints.Add(new PointF(100, 0));            arrPoints.Add(new PointF(100, 100));            gp.AddLines(arrPoints.ToArray());            gp.CloseFigure();            this.CreateGraphics().DrawPath(Pens.Black, gp);            Region r = new Region(gp);            button1.Region = r;            button1.BackColor = Color.Red;
[解决办法]
C# code
            GraphicsPath gp = new GraphicsPath();            List<PointF> arrPoints = new List<PointF>();            arrPoints.Add(new PointF(0, 0));            arrPoints.Add(new PointF(100, 0));            arrPoints.Add(new PointF(100, 100));            gp.AddLines(arrPoints.ToArray());            gp.CloseFigure();            this.CreateGraphics().DrawPath(Pens.Black, gp);            Region r = new Region(gp);            button1.Region = r;            button1.BackColor = Color.Red;