Region.IsVisible : Region : Drawing 2D C# Examples

    
using  System;
using  System.Drawing;
using  System.Collections;
using  System.ComponentModel;
using  System.Windows.Forms;
using  System.Data;

using  System.Drawing.Drawing2D;

public  class  Form1  :  System.Windows.Forms.Form  {
        private  System.Windows.Forms.Label  label1;
        GraphicsPath  gP;
        string  mes  =  "Move  to  the  big  I!";
        FontFamily  fF  =  new  FontFamily("Times  new  roman");
        public  Form1()  {
                this.label1  =  new  System.Windows.Forms.Label();
                this.SuspendLayout();
                this.label1.Location  =  new  System.Drawing.Point(88,  16);
                this.label1.Size  =  new  System.Drawing.Size(160,  23);
                this.label1.Text  =  "label1";
                this.AutoScaleBaseSize  =  new  System.Drawing.Size(5,  13);
                this.ClientSize  =  new  System.Drawing.Size(292,  109);
                this.Controls.AddRange(new  System.Windows.Forms.Control[]  {  this.label1  });
                this.MouseMove  +=  new  System.Windows.Forms.MouseEventHandler(this.Form1_MouseMove);
                this.ResumeLayout(false);
                Graphics  g  =  this.CreateGraphics();
                label1.Text  =  mes;
                string  s  =  "I";
                int  fSt  =  (int)FontStyle.Regular;
                Point  xy  =  new  Point(50,  10);
                StringFormat  sFr  =  StringFormat.GenericDefault;
                gP  =  new  GraphicsPath();
                gP.AddString(s,  fF,  fSt,  50,  xy,  sFr);
        }
        [STAThread]
        static  void  Main()  {
                Application.Run(new  Form1());
        }

        protected  override  void  OnPaint(System.Windows.Forms.PaintEventArgs  e)  {
                Graphics  g  =  this.CreateGraphics();
                g.DrawPath(Pens.Black,  gP);    //  draw  the  path  to  the  surface
                g.Dispose();
        }

        private  void  Form1_MouseMove(object  sender,  MouseEventArgs  e)  {
                Region  reg  =  new  Region(gP);
                if  (reg.IsVisible(new  Point(e.X,  e.Y)))
                        mes  =  "in";
                else
                        mes  =  "Move  to  the  big  I!";

        }
}