using System;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Windows.Forms;

namespace WindowsApplication1
{
    public partial class Form1 : Form
    {
     string   stringCaption = "CombineMode = ";
     MenuItem MenuCombineMode;
    
     protected override void OnPaint(PaintEventArgs pea)
     {
          DoPage(pea.Graphics, ForeColor,ClientSize.Width, ClientSize.Height);
     }
     public Form1()
     {
          InitializeComponent();
          ResizeRedraw = true;
   
          Menu = new MainMenu();
          Menu.MenuItems.Add("&CombineMode");
   
          EventHandler ehClick = new EventHandler(MenuCombineModeOnClick);
          
          for (int i = 0; i < 6; i++)
          {
               MenuItem MyMI   = new MenuItem("&" + (CombineMode)i);
               MyMI.Click     += ehClick;
               MyMI.RadioCheck = true;
   
               Menu.MenuItems[0].MenuItems.Add(MyMI);
          }
          MenuCombineMode = Menu.MenuItems[0].MenuItems[0];
          MenuCombineMode.Checked = true;
     }
     void MenuCombineModeOnClick(object obj, EventArgs ea)
     {
          MenuCombineMode.Checked = false;
          MenuCombineMode = (MenuItem) obj;
          MenuCombineMode.Checked = true;
   
          Text = stringCaption + (CombineMode)MenuCombineMode.Index;
          Invalidate();
     }
     protected void DoPage(Graphics grfx, Color clr, int cx, int cy)
     {
          GraphicsPath path = new GraphicsPath();
          path.AddEllipse(0, 0, 2 * cx / 3, cy);
          grfx.SetClip(path);
   
          path.Reset();
          path.AddEllipse(cx / 3, 0, 2 * cx / 3, cy);
          grfx.SetClip(path, (CombineMode)MenuCombineMode.Index);
   
          grfx.FillRectangle(Brushes.Red, 0, 0, cx, cy);
     }
   }
}