using System;
using System.Collecti ons.Generic;
using System.Componen tModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows. Forms;

public class MyPolygonButton
{
public MyPolygonButton ()
{
}

protected override void OnPaint(System. Windows.Forms.P aintEventArgs e)
{
...