2D Graphics C#

/*
User Interfaces in C#: Windows Forms and Custom Controls
by Matthew MacDonald
Publisher: Apress
ISBN: 1590590457
*/
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Drawing.Drawing2D;
namespace GDI_Basics
{
    /// 
    /// Summary description for GraphicsPathExample.
    /// 

    public class GraphicsPathExample : System.Windows.Forms.Form
    {
        /// 
        /// Required designer variable.
        /// 

        private System.ComponentModel.Container components = null;
        public GraphicsPathExample()
        {
            //
            // Required for Windows Form Designer support
            //
            InitializeComponent();
            //
            // TODO: Add any constructor code after InitializeComponent call
            //
        }
        /// 
        /// Clean up any resources being used.
        /// 

        protected override void Dispose( bool disposing )
        {
            if( disposing )
            {
                if(components != null)
                {
                    components.Dispose();
                }
            }
            base.Dispose( disposing );
        }
        #region Windows Form Designer generated code
        /// 
        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// 

        private void InitializeComponent()
        {
            // 
            // GraphicsPathExample
            // 
            this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
            this.ClientSize = new System.Drawing.Size(292, 266);
            this.Name = "GraphicsPathExample";
            this.Text = "GraphicsPathExample";
            this.MouseDown += new System.Windows.Forms.MouseEventHandler(this.GraphicsPathExample_MouseDown);
            this.Paint += new System.Windows.Forms.PaintEventHandler(this.GraphicsPathExample_Paint);
        }
        #endregion
        [STAThread]
        static void Main() 
        {
            Application.Run(new GraphicsPathExample());
        }
        GraphicsPath path;
        private void GraphicsPathExample_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
        {
            e.Graphics.SmoothingMode = SmoothingMode.AntiAlias;
            path = new GraphicsPath();
            path.StartFigure();
            path.AddArc(10, 10, 100, 100, 20, 50);
            path.AddLine(20, 50, 70, 230);
            path.CloseFigure();
            path.AddEllipse(120, 50, 80, 80);
            e.Graphics.FillPath(Brushes.White, path);
            e.Graphics.DrawPath(Pens.Black, path);
        }
        private void GraphicsPathExample_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
        {
            if (path.IsVisible(e.X, e.Y))
            {
                MessageBox.Show("You clicked inside the figure.");
            }
        }
    }
}