Csharp/C Sharp/2D Graphics/Region Clip

Clip many shapes

<source lang="csharp"> using System; using System.Collections.Generic; using System.ruponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; using System.Drawing.Drawing2D; public class Form1 : Form {

   private System.Windows.Forms.CheckBox chkClipping;
 public Form1() {
       InitializeComponent();
 }
 private void checkBox1_CheckedChanged(object sender, EventArgs e)
 {
   Invalidate();
 }  
 private void Form1_Paint(object sender, PaintEventArgs e)
 {
   e.Graphics.SmoothingMode = SmoothingMode.AntiAlias;
   GraphicsPath path = new GraphicsPath();
   
   Region clippingRegion = new Region(path);
   if (chkClipping.Checked) e.Graphics.Clip = clippingRegion;
   e.Graphics.ResetClip();
   
   path = new GraphicsPath();
   path.AddString("www.nfex.ru", new FontFamily("Verdana"), 0, 70, new Point(10, 130), new StringFormat());
   e.Graphics.DrawPath(Pens.Blue, path);
   clippingRegion = new Region(path);
   if (chkClipping.Checked) e.Graphics.Clip = clippingRegion;
   for (int i = 0; i < 40; i++)
   {
     e.Graphics.DrawEllipse(Pens.Red, 180 - i*3, 180 - i*3, i*6, i*6);      
   }
   clippingRegion.Dispose();
   path.Dispose();
 }
 private void InitializeComponent()
 {
   this.chkClipping = new System.Windows.Forms.CheckBox();
   this.SuspendLayout();
   // 
   // chkClipping
   // 
   this.chkClipping.AutoSize = true;
   this.chkClipping.Checked = true;
   this.chkClipping.CheckState = System.Windows.Forms.CheckState.Checked;
   this.chkClipping.Location = new System.Drawing.Point(12, 300);
   this.chkClipping.Name = "chkClipping";
   this.chkClipping.Size = new System.Drawing.Size(80, 17);
   this.chkClipping.TabIndex = 0;
   this.chkClipping.Text = "Use Clipping";
   this.chkClipping.CheckedChanged += new System.EventHandler(this.checkBox1_CheckedChanged);
   // 
   // Form1
   // 
   this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
   this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
   this.ClientSize = new System.Drawing.Size(292, 329);
   this.Controls.Add(this.chkClipping);
   this.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
   this.Name = "Form1";
   this.Text = "Clipping";
   this.Paint += new System.Windows.Forms.PaintEventHandler(this.Form1_Paint);
   this.ResumeLayout(false);
   this.PerformLayout();
 }
 [STAThread]
 static void Main()
 {
   Application.EnableVisualStyles();
   Application.Run(new Form1());
 }

}

      </source>

Text region clips shape

<source lang="csharp"> using System; using System.Collections.Generic; using System.ruponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; using System.Drawing.Drawing2D; public class Form1 : Form {

   private System.Windows.Forms.CheckBox chkClipping;
 public Form1() {
       InitializeComponent();
 }
 private void checkBox1_CheckedChanged(object sender, EventArgs e)
 {
   Invalidate();
 }  
 private void Form1_Paint(object sender, PaintEventArgs e)
 {
   e.Graphics.SmoothingMode = SmoothingMode.AntiAlias;
   Rectangle rectangle = new Rectangle(10, 10, 250, 50);
   GraphicsPath path = new GraphicsPath();
   path.AddEllipse(rectangle);
   e.Graphics.DrawPath(Pens.Red, path);
   
   Region clippingRegion = new Region(path);
   if (chkClipping.Checked) e.Graphics.Clip = clippingRegion;
   e.Graphics.DrawString("www.nfex.ru",new Font("Verdana", 36, FontStyle.Bold), Brushes.Black, 10, 10);
   clippingRegion.Dispose();
   path.Dispose();
 }
 private void InitializeComponent()
 {
   this.chkClipping = new System.Windows.Forms.CheckBox();
   this.SuspendLayout();
   // 
   // chkClipping
   // 
   this.chkClipping.AutoSize = true;
   this.chkClipping.Checked = true;
   this.chkClipping.CheckState = System.Windows.Forms.CheckState.Checked;
   this.chkClipping.Location = new System.Drawing.Point(12, 300);
   this.chkClipping.Name = "chkClipping";
   this.chkClipping.Size = new System.Drawing.Size(80, 17);
   this.chkClipping.TabIndex = 0;
   this.chkClipping.Text = "Use Clipping";
   this.chkClipping.CheckedChanged += new System.EventHandler(this.checkBox1_CheckedChanged);
   // 
   // Form1
   // 
   this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
   this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
   this.ClientSize = new System.Drawing.Size(292, 329);
   this.Controls.Add(this.chkClipping);
   this.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
   this.Name = "Form1";
   this.Text = "Clipping";
   this.Paint += new System.Windows.Forms.PaintEventHandler(this.Form1_Paint);
   this.ResumeLayout(false);
   this.PerformLayout();
 }
 [STAThread]
 static void Main()
 {
   Application.EnableVisualStyles();
   Application.Run(new Form1());
 }

}

      </source>