- Control Mouse Event

using System; using System.Drawing; using System.Windows.Forms; namespace MouseEvent { public class Form1 : System.Windows.Forms.Form { private System.Windows.Forms.Panel panel1; private System.Windows.Forms.Label label1; private System.Windows.Forms.Label label2; private System.Windows.Forms.Label label3; private System.Windows.Forms.Label label4; private System.Windows.Forms.Label label5; private System.Windows.Forms.Label label6; private System.Windows.Forms.Label label7; private System.Windows.Forms.Label label8; private System.Windows.Forms.Label label9; private System.Windows.Forms.Button clearButton; private System.Drawing.Drawing2D.GraphicsPath mousePath; private System.Windows.Forms.GroupBox groupBox1; private int fontSize = 20; [STAThread] static void Main() { Application.Run(new Form1()); } public Form1() { mousePath = new System.Drawing.Drawing2D.GraphicsPath(); this.panel1 = new System.Windows.Forms.Panel(); this.label1 = new System.Windows.Forms.Label(); this.clearButton = new System.Windows.Forms.Button(); this.label2 = new System.Windows.Forms.Label(); this.label3 = new System.Windows.Forms.Label(); this.label4 = new System.Windows.Forms.Label(); this.label5 = new System.Windows.Forms.Label(); this.label6 = new System.Windows.Forms.Label(); this.label7 = new System.Windows.Forms.Label(); this.label8 = new System.Windows.Forms.Label(); this.label9 = new System.Windows.Forms.Label(); this.groupBox1 = new System.Windows.Forms.GroupBox(); // Mouse Events Label this.label1.Location = new System.Drawing.Point(24, 504); this.label1.Size = new System.Drawing.Size(392, 23); // DoubleClickSize Label this.label2.AutoSize = true; this.label2.Location = new System.Drawing.Point(24, 48); this.label2.Size = new System.Drawing.Size(35, 13); // DoubleClickTime Label this.label3.AutoSize = true; this.label3.Location = new System.Drawing.Point(24, 72); this.label3.Size = new System.Drawing.Size(35, 13); // MousePresent Label this.label4.AutoSize = true; this.label4.Location = new System.Drawing.Point(24, 96); this.label4.Size = new System.Drawing.Size(35, 13); // MouseButtons Label this.label5.AutoSize = true; this.label5.Location = new System.Drawing.Point(24, 120); this.label5.Size = new System.Drawing.Size(35, 13); // MouseButtonsSwapped Label this.label6.AutoSize = true; this.label6.Location = new System.Drawing.Point(320, 48); this.label6.Size = new System.Drawing.Size(35, 13); // MouseWheelPresent Label this.label7.AutoSize = true; this.label7.Location = new System.Drawing.Point(320, 72); this.label7.Size = new System.Drawing.Size(35, 13); // MouseWheelScrollLines Label this.label8.AutoSize = true; this.label8.Location = new System.Drawing.Point(320, 96); this.label8.Size = new System.Drawing.Size(35, 13); // NativeMouseWheelSupport Label this.label9.AutoSize = true; this.label9.Location = new System.Drawing.Point(320, 120); this.label9.Size = new System.Drawing.Size(35, 13); // Mouse Panel this.panel1.Anchor = ((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left) | System.Windows.Forms.AnchorStyles.Right); this.panel1.BackColor = System.Drawing.SystemColors.ControlDark; this.panel1.Location = new System.Drawing.Point(16, 160); this.panel1.Size = new System.Drawing.Size(664, 320); this.panel1.MouseUp += new System.Windows.Forms.MouseEventHandler(this.panel1_MouseUp); this.panel1.Paint += new System.Windows.Forms.PaintEventHandler(this.panel1_Paint); this.panel1.MouseEnter += new System.EventHandler(this.panel1_MouseEnter); this.panel1.MouseHover += new System.EventHandler(this.panel1_MouseHover); this.panel1.MouseMove += new System.Windows.Forms.MouseEventHandler(this.panel1_MouseMove); this.panel1.MouseLeave += new System.EventHandler(this.panel1_MouseLeave); this.panel1.MouseDown += new System.Windows.Forms.MouseEventHandler(this.panel1_MouseDown); this.panel1.MouseWheel += new System.Windows.Forms.MouseEventHandler(this.panel1_MouseWheel); // Clear Button this.clearButton.Anchor = (System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Right); this.clearButton.Location = new System.Drawing.Point(592, 504); this.clearButton.TabIndex = 1; this.clearButton.Text = "Clear"; this.clearButton.Click += new System.EventHandler(this.clearButton_Click); // GroupBox this.groupBox1.Anchor = ((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left) | System.Windows.Forms.AnchorStyles.Right); this.groupBox1.Location = new System.Drawing.Point(16, 24); this.groupBox1.Size = new System.Drawing.Size(664, 128); this.groupBox1.Text = "System.Windows.Forms.SystemInformation"; // Set up how the form should be displayed and add the controls to the form. this.ClientSize = new System.Drawing.Size(696, 534); this.Controls.AddRange(new System.Windows.Forms.Control[] { this.label9,this.label8,this.label7,this.label6, this.label5,this.label4,this.label3,this.label2, this.clearButton,this.panel1,this.label1,this.groupBox1}); this.Text = "Mouse Event Example"; // Displays information about the system mouse. label2.Text = "SystemInformation.DoubleClickSize: " + SystemInformation.DoubleClickSize.ToString(); label3.Text = "SystemInformation.DoubleClickTime: " + SystemInformation.DoubleClickTime.ToString(); label4.Text = "SystemInformation.MousePresent: " + SystemInformation.MousePresent.ToString(); label5.Text = "SystemInformation.MouseButtons: " + SystemInformation.MouseButtons.ToString(); label6.Text = "SystemInformation.MouseButtonsSwapped: " + SystemInformation.MouseButtonsSwapped.ToString(); label7.Text = "SystemInformation.MouseWheelPresent: " + SystemInformation.MouseWheelPresent.ToString(); label8.Text = "SystemInformation.MouseWheelScrollLines: " + SystemInformation.MouseWheelScrollLines.ToString(); label9.Text = "SystemInformation.NativeMouseWheelSupport: " + SystemInformation.NativeMouseWheelSupport.ToString(); } private void panel1_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e) { // Update the mouse path with the mouse information Point mouseDownLocation = new Point(e.X, e.Y); string eventString = null; switch (e.Button) { case MouseButtons.Left: eventString = "L"; break; case MouseButtons.Right: eventString = "R"; break; case MouseButtons.Middle: eventString = "M"; break; case MouseButtons.XButton1: eventString = "X1"; break; case MouseButtons.XButton2: eventString = "X2"; break; case MouseButtons.None: default: break; } if (eventString != null) { mousePath.AddString(eventString, FontFamily.GenericSerif, (int)FontStyle.Bold, fontSize, mouseDownLocation, StringFormat.GenericDefault); } else { mousePath.AddLine(mouseDownLocation,mouseDownLocation); } panel1.Focus(); panel1.Invalidate(); } private void panel1_MouseEnter(object sender, System.EventArgs e) { // Update the mouse event label to indicate the MouseEnter event occurred. label1.Text = sender.GetType().ToString() + ": MouseEnter"; } private void panel1_MouseHover(object sender, System.EventArgs e) { // Update the mouse event label to indicate the MouseHover event occurred. label1.Text = sender.GetType().ToString() + ": MouseHover"; } private void panel1_MouseLeave(object sender, System.EventArgs e) { // Update the mouse event label to indicate the MouseLeave event occurred. label1.Text = sender.GetType().ToString() + ": MouseLeave"; } private void panel1_MouseMove(object sender, System.Windows.Forms.MouseEventArgs e) { // Update the mouse path that is drawn onto the Panel. int mouseX = e.X; int mouseY = e.Y; mousePath.AddLine(mouseX,mouseY,mouseX,mouseY); } private void panel1_MouseWheel(object sender, System.Windows.Forms.MouseEventArgs e) { // Update the drawing based upon the mouse wheel scrolling. int numberOfTextLinesToMove = e.Delta * SystemInformation.MouseWheelScrollLines / 120; int numberOfPixelsToMove = numberOfTextLinesToMove * fontSize; if (numberOfPixelsToMove != 0) { System.Drawing.Drawing2D.Matrix translateMatrix = new System.Drawing.Drawing2D.Matrix(); translateMatrix.Translate(0, numberOfPixelsToMove); mousePath.Transform(translateMatrix); } panel1.Invalidate(); } private void panel1_MouseUp(object sender, System.Windows.Forms.MouseEventArgs e) { Point mouseUpLocation = new System.Drawing.Point(e.X, e.Y); // Show the number of clicks in the path graphic. int numberOfClicks = e.Clicks; mousePath.AddString(" " + numberOfClicks.ToString(), FontFamily.GenericSerif, (int)FontStyle.Bold, fontSize, mouseUpLocation, StringFormat.GenericDefault); panel1.Invalidate(); } private void panel1_Paint(object sender, System.Windows.Forms.PaintEventArgs e) { // Perform the painting of the Panel. e.Graphics.DrawPath(System.Drawing.Pens.DarkRed, mousePath); } private void clearButton_Click(object sender, System.EventArgs e) { // Clear the Panel display. mousePath.Dispose(); mousePath = new System.Drawing.Drawing2D.GraphicsPath(); panel1.Invalidate(); } } }