MouseButtons 列挙体とは何？わかりやすく解説 Weblio辞書

.NET Framework クラスライブラリリファレンス

索引トップ用語の索引ランキング

MouseButtons 列挙体

押されたマウスボタンを定義する定数を指定します。

この列挙体には、メンバ値のビットごとの組み合わせを可能にする FlagsAttribute 属性が含まれています。

名前空間: System.Windows.Forms
アセンブリ: System.Windows.Forms (system.windows.forms.dll 内)
構文

Visual Basic (宣言)

<FlagsAttribute> _
<ComVisibleAttribute(True)> _
Public Enumeration MouseButtons

Visual Basic (使用法)

Dim instance As MouseButtons

[FlagsAttribute] 
[ComVisibleAttribute(true)] 
public enum MouseButtons

C++

[FlagsAttribute] 
[ComVisibleAttribute(true)] 
public enum class MouseButtons

/** @attribute FlagsAttribute() */ 
/** @attribute ComVisibleAttribute(true) */ 
public enum MouseButtons

JScript

FlagsAttribute 
ComVisibleAttribute(true) 
public enum MouseButtons

メンバ

	メンバ名	説明
	Left	マウスの左ボタンが押されました。
	Middle	マウスの中央ボタンが押されました。
	None	マウスボタンは押されていません。
	Right	マウスの右ボタンが押されました。
	XButton1	1 番目の XButton が押されました。 Windows 2000 では、5 つのボタンが付いたマウスである Microsoft IntelliMouse Explorer がサポートされています。新しい 2 つのマウスボタン (XBUTTON1 と XBUTTON2) は、ブラウザの戻る機能と進む機能を提供します。
	XButton2	2 番目の XButton が押されました。 Windows 2000 では、5 つのボタンが付いたマウスである Microsoft IntelliMouse Explorer がサポートされています。新しい 2 つのマウスボタン (XBUTTON1 と XBUTTON2) は、ブラウザの戻る機能と進む機能を提供します。

解説

この列挙体は、AxHost クラス、Control クラス、DataGrid クラス、Form クラス、RadioButton クラス、Splitter クラス、StatusBar クラス、UpDownBase クラスなどの多数のクラスで使用されます。

使用例

GetCharFromPosition メソッドを使用して、RichTextBox コントロールの内容から、指定した座標の文字を取得する例を次に示します。この例では、イベントハンドラにパラメータとして渡された MouseEventArgs オブジェクトの座標情報を基に、コントロール内の該当座標にある文字を取得しています。見つかった文字は、空白文字ではなかった場合、MessageBox に表示されます。この例は、richTextBox1 という名前の RichTextBox コントロールが作成済みで、この例のコードが RichTextBox の MouseDown イベントに組み込まれていることを前提にしています。

Visual Basic

Private Sub richTextBox1_MouseDown(ByVal
 sender As Object, ByVal
 e As System.Windows.Forms.MouseEventArgs) Handles richTextBox1.MouseDown
    ' Determine which mouse button is clicked.
    If e.Button = MouseButtons.Left Then
        ' Obtain the character at which the mouse cursor was clicked.
        Dim tempChar As Char
 = richTextBox1.GetCharFromPosition(New Point(e.X, e.Y))
        ' Determine whether the character is an empty space.
        If tempChar <> " "
 Then
            ' Display the character in a message box.
            MessageBox.Show(("The character at the specified position
 is " + tempChar + "."))
        End If
    End If
End Sub

private void richTextBox1_MouseDown(object
 sender, System.Windows.Forms.MouseEventArgs e)
{
    // Determine which mouse button is clicked.
    if(e.Button == MouseButtons.Left)
    {
        // Obtain the character at which the mouse cursor was clicked
 at.
        char tempChar = richTextBox1.GetCharFromPosition(new
 Point(e.X, e.Y));
        // Determine whether the character is an empty space.
        if (tempChar.ToString() != " ")
            // Display the character in a message box.
            MessageBox.Show("The character at the specified position is "
 + tempChar + ".");

    }
}

C++

private:
   void richTextBox1_MouseDown( Object^ /*sender*/, System::Windows::Forms::MouseEventArgs^
 e )
   {
      // Determine which mouse button is clicked.
      if ( e->Button == ::MouseButtons::Left )
      {
         // Obtain the character at which the mouse cursor was clicked
 at.
         Char tempChar = richTextBox1->GetCharFromPosition( Point(e->X,e->Y)
 );

         // Determine whether the character is an empty space.
         if (  !tempChar.ToString()->Equals( " "
 ) )

         // Display the character in a message box.
         MessageBox::Show( String::Format( "The character at the specified position
 is {0}.", tempChar ) );
      }
   }

private void richTextBox1_MouseDown(Object
 sender, System.Windows.
    Forms.MouseEventArgs e)
{
    // Determine which mouse button is clicked.
    if (e.get_Button().Equals(get_MouseButtons().Left)) {
        // Obtain the character at which the mouse cursor was clicked
 at.
        char tempChar = richTextBox1.GetCharFromPosition(new
 Point(e.
             get_X(), e.get_Y()));
        // Determine whether the character is an empty space.
        if (!(((System.Char)tempChar).ToString().Equals("
 "))) {
            // Display the character in a message box.
            MessageBox.Show("The character at the specified position is "
 
                + tempChar + ".");
        }
    }
} //richTextBox1_MouseDown

さまざまなマウスイベントを使用して、Panel にマウスの軌跡を描画する方法を次の例に示します。MouseMove イベントおよび MouseDown イベントが発生するごとに、線分が GraphicsPath に追加されます。グラフィックを更新するために、各 MouseDown イベントおよび各 MouseUp イベントで、Panel に対して Invalidate メソッドが呼び出されます。さらに、グラフィックパスは、MouseWheel イベントが発生したときに上または下にスクロールされます。MouseHover などの、追加のマウスイベントも画面上で識別されます。画面には、SystemInformation クラスからのマウスに関する追加情報も表示されます。

Visual Basic

Imports System
Imports System.Drawing
Imports System.Windows.Forms

Namespace MouseEvent
    ' Summary description for Form1.
    Public NotInheritable Class
 Form1
        Inherits System.Windows.Forms.Form

        Friend WithEvents panel1 As
 System.Windows.Forms.Panel
        Private label1 As System.Windows.Forms.Label
        Private label2 As System.Windows.Forms.Label
        Private label3 As System.Windows.Forms.Label
        Private label4 As System.Windows.Forms.Label
        Private label5 As System.Windows.Forms.Label
        Private label6 As System.Windows.Forms.Label
        Private label7 As System.Windows.Forms.Label
        Private label8 As System.Windows.Forms.Label
        Private label9 As System.Windows.Forms.Label
        Friend WithEvents clearButton As
 System.Windows.Forms.Button
        Private mousePath As System.Drawing.Drawing2D.GraphicsPath
        Private groupBox1 As System.Windows.Forms.GroupBox

        Private fontSize As Integer
 = 20
        
        <System.STAThread()>  _
        Public Shared Sub
 Main()
            System.Windows.Forms.Application.Run(New Form1())
        End Sub 'Main

        Public Sub New()

            mousePath = New System.Drawing.Drawing2D.GraphicsPath()

            Me.panel1 = New System.Windows.Forms.Panel()
            Me.label1 = New System.Windows.Forms.Label()
            Me.clearButton = New System.Windows.Forms.Button()
            Me.label2 = New System.Windows.Forms.Label()
            Me.label3 = New System.Windows.Forms.Label()
            Me.label4 = New System.Windows.Forms.Label()
            Me.label5 = New System.Windows.Forms.Label()
            Me.label6 = New System.Windows.Forms.Label()
            Me.label7 = New System.Windows.Forms.Label()
            Me.label8 = New System.Windows.Forms.Label()
            Me.label9 = New System.Windows.Forms.Label()
            Me.groupBox1 = New System.Windows.Forms.GroupBox()

            ' Mouse Events Label
            Me.label1.Location = New System.Drawing.Point(24,
 504) 
            Me.label1.Size = New System.Drawing.Size(392,
 23) 
            ' DoubleClickSize Label
            Me.label2.AutoSize = True 
            Me.label2.Location = New System.Drawing.Point(24,
 48) 
            Me.label2.Size = New System.Drawing.Size(35,
 13) 
            ' DoubleClickTime Label
            Me.label3.AutoSize = True 
            Me.label3.Location = New System.Drawing.Point(24,
 72) 
            Me.label3.Size = New System.Drawing.Size(35,
 13) 
            ' MousePresent Label
            Me.label4.AutoSize = True 
            Me.label4.Location = New System.Drawing.Point(24,
 96) 
            Me.label4.Size = New System.Drawing.Size(35,
 13) 
            ' MouseButtons Label
            Me.label5.AutoSize = True 
            Me.label5.Location = New System.Drawing.Point(24,
 120) 
            Me.label5.Size = New System.Drawing.Size(35,
 13) 
            ' MouseButtonsSwapped Label
            Me.label6.AutoSize = True 
            Me.label6.Location = New System.Drawing.Point(320,
 48) 
            Me.label6.Size = New System.Drawing.Size(35,
 13) 
            ' MouseWheelPresent Label
            Me.label7.AutoSize = True 
            Me.label7.Location = New System.Drawing.Point(320,
 72) 
            Me.label7.Size = New System.Drawing.Size(35,
 13) 
            ' MouseWheelScrollLines Label
            Me.label8.AutoSize = True 
            Me.label8.Location = New System.Drawing.Point(320,
 96) 
            Me.label8.Size = New System.Drawing.Size(35,
 13) 
            ' NativeMouseWheelSupport Label
            Me.label9.AutoSize = True 
            Me.label9.Location = New System.Drawing.Point(320,
 120) 
            Me.label9.Size = New System.Drawing.Size(35,
 13) 

            ' Mouse Panel
            Me.panel1.Anchor = System.Windows.Forms.AnchorStyles.Top
 Or _
                                    System.Windows.Forms.AnchorStyles.Left Or
 _
                                    System.Windows.Forms.AnchorStyles.Right
            Me.panel1.BackColor = System.Drawing.SystemColors.ControlDark
            Me.panel1.Location = New System.Drawing.Point(16,
 160)
            Me.panel1.Size = New System.Drawing.Size(664,
 320)

            ' Clear Button
            Me.clearButton.Anchor = System.Windows.Forms.AnchorStyles.Top
 Or _
                                    System.Windows.Forms.AnchorStyles.Right
            Me.clearButton.Location = New System.Drawing.Point(592,
 504)
            Me.clearButton.TabIndex = 1
            Me.clearButton.Text = "Clear"

            ' GroupBox
            Me.groupBox1.Anchor = System.Windows.Forms.AnchorStyles.Top
 Or _
                                  System.Windows.Forms.AnchorStyles.Left Or
 _
                                  System.Windows.Forms.AnchorStyles.Right
            Me.groupBox1.Location = New System.Drawing.Point(16,
 24)
            Me.groupBox1.Size = New System.Drawing.Size(664,
 128)
            Me.groupBox1.Text = "System.Windows.Forms.SystemInformation"

            ' Set up how the form should be displayed and add the controls
 to the form.
            Me.ClientSize = New System.Drawing.Size(696,
 534)
            Me.Controls.AddRange(New System.Windows.Forms.Control()
 {Me.label9, _
                            Me.label8, Me.label7,
 Me.label6, Me.label5, Me.label4,
 _
                            Me.label3, Me.label2,
 Me.clearButton, Me.panel1, Me.label1,
 Me.groupBox1})

            Me.Text = "Mouse Event Example"

            ' Display 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()
        End Sub 'New

        Private Sub panel1_MouseDown(sender
 As Object, e As System.Windows.Forms.MouseEventArgs)
 Handles panel1.MouseDown
            ' Update the mouse path with the mouse information
            Dim mouseDownLocation As New
 Point(e.X, e.Y)
            
            Dim eventString As String
 = Nothing
            Select Case e.Button
                Case MouseButtons.Left
                    eventString = "L"
                Case MouseButtons.Right
                    eventString = "R"
                Case MouseButtons.Middle
                    eventString = "M"
                Case MouseButtons.XButton1
                    eventString = "X1"
                Case MouseButtons.XButton2
                    eventString = "X2"
                Case MouseButtons.None:
                     eventString = Nothing              
            End Select
            
            If Not (eventString Is
 Nothing) Then
                mousePath.AddString(eventString, FontFamily.GenericSerif, CInt(FontStyle.Bold),
 fontSize, mouseDownLocation, StringFormat.GenericDefault)
            Else
                mousePath.AddLine(mouseDownLocation, mouseDownLocation)
            End If

            panel1.Focus()
            panel1.Invalidate()
        End Sub 
        
        Private Sub panel1_MouseEnter(sender
 As Object, e As System.EventArgs)
 Handles panel1.MouseEnter
            ' Update the mouse event label to indicate the MouseEnter
 event occurred.
            label1.Text = sender.GetType().ToString() + ": MouseEnter"
        End Sub
        
        Private Sub panel1_MouseHover(sender
 As Object, e As System.EventArgs)
 Handles panel1.MouseHover
            ' Update the mouse event label to indicate the MouseHover
 event occurred.
            label1.Text = sender.GetType().ToString() + ": MouseHover"
        End Sub
        
        Private Sub panel1_MouseLeave(sender
 As Object, e As System.EventArgs)
 Handles panel1.MouseLeave
            ' Update the mouse event label to indicate the MouseLeave
 event occurred.
            label1.Text = sender.GetType().ToString() + ": MouseLeave"
        End Sub
        
        Private Sub panel1_MouseMove(sender
 As Object, e As System.Windows.Forms.MouseEventArgs)
 Handles panel1.MouseMove
            ' Update the mouse path that is drawn onto the Panel.
            Dim mouseX As Integer
 = e.X
            Dim mouseY As Integer
 = e.Y
            
            mousePath.AddLine(mouseX, mouseY, mouseX, mouseY)
        End Sub
        Private Sub panel1_MouseWheel(sender
 As Object, e As System.Windows.Forms.MouseEventArgs)
 Handles panel1.MouseWheel
            ' Update the drawing based upon the mouse wheel scrolling.
            Dim numberOfTextLinesToMove As
 Integer = e.Delta * SystemInformation.MouseWheelScrollLines
 / 120 ' WHEEL_DATA
            Dim numberOfPixelsToMove As Integer
 = numberOfTextLinesToMove * fontSize
            
            If numberOfPixelsToMove <> 0 Then
                Dim translateMatrix As New
 System.Drawing.Drawing2D.Matrix()
                translateMatrix.Translate(0, numberOfPixelsToMove)
                mousePath.Transform(translateMatrix)
            End If

            panel1.Invalidate()
        End Sub
        Private Sub panel1_MouseUp(sender As
 Object, e As System.Windows.Forms.MouseEventArgs)
 Handles panel1.MouseUp
            Dim mouseUpLocation = New System.Drawing.Point(e.X,
 e.Y)
            
            ' Show the number of clicks in the path graphic.
            Dim numberOfClicks As Integer
 = e.Clicks
            mousePath.AddString("     " + numberOfClicks.ToString(),
 _
                                FontFamily.GenericSerif, CInt(FontStyle.Bold), _
                                fontSize, mouseUpLocation, StringFormat.GenericDefault)

            panel1.Invalidate()
        End Sub
        
        Private Sub panel1_Paint(sender As
 Object, e As System.Windows.Forms.PaintEventArgs)
 Handles panel1.Paint
            ' Perform the painting of the Panel.
            e.Graphics.DrawPath(System.Drawing.Pens.DarkRed, mousePath)
        End Sub
        
        Private Sub clearButton_Click(sender
 As Object, e As System.EventArgs)
 Handles clearButton.Click
            ' Clear the Panel display.
            mousePath.Dispose()
            mousePath = New System.Drawing.Drawing2D.GraphicsPath()
            panel1.Invalidate()
        End Sub
        
    End Class 'Form1
End Namespace

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();
        }
    }
}

C++

#using <System.dll>
#using <System.Windows.Forms.dll>
#using <System.Drawing.dll>

using namespace System;
using namespace System::Drawing;
using namespace System::Windows::Forms;

namespace MouseEvent
{
   public ref class Form1: public
 System::Windows::Forms::Form
   {
   private:
      System::Windows::Forms::Panel^ panel1;
      System::Windows::Forms::Label ^ label1;
      System::Windows::Forms::Label ^ label2;
      System::Windows::Forms::Label ^ label3;
      System::Windows::Forms::Label ^ label4;
      System::Windows::Forms::Label ^ label5;
      System::Windows::Forms::Label ^ label6;
      System::Windows::Forms::Label ^ label7;
      System::Windows::Forms::Label ^ label8;
      System::Windows::Forms::Label ^ label9;
      System::Windows::Forms::Button^ clearButton;
      System::Drawing::Drawing2D::GraphicsPath^ mousePath;
      System::Windows::Forms::GroupBox^ groupBox1;
      int fontSize;

   public:
      Form1()
      {
         fontSize = 20;
         mousePath = gcnew System::Drawing::Drawing2D::GraphicsPath;
         this->panel1 = gcnew System::Windows::Forms::Panel;
         this->label1 = gcnew System::Windows::Forms::Label;
         this->clearButton = gcnew System::Windows::Forms::Button;
         this->label2 = gcnew System::Windows::Forms::Label;
         this->label3 = gcnew System::Windows::Forms::Label;
         this->label4 = gcnew System::Windows::Forms::Label;
         this->label5 = gcnew System::Windows::Forms::Label;
         this->label6 = gcnew System::Windows::Forms::Label;
         this->label7 = gcnew System::Windows::Forms::Label;
         this->label8 = gcnew System::Windows::Forms::Label;
         this->label9 = gcnew System::Windows::Forms::Label;
         this->groupBox1 = gcnew System::Windows::Forms::GroupBox;
         
         // Mouse Events Label
         this->label1->Location = System::Drawing::Point(
 24, 504 );
         this->label1->Size = System::Drawing::Size( 392,
 23 );
         
         // DoubleClickSize Label
         this->label2->AutoSize = true;
         this->label2->Location = System::Drawing::Point(
 24, 48 );
         this->label2->Size = System::Drawing::Size( 35,
 13 );
         
         // DoubleClickTime Label
         this->label3->AutoSize = true;
         this->label3->Location = System::Drawing::Point(
 24, 72 );
         this->label3->Size = System::Drawing::Size( 35,
 13 );
         
         // MousePresent Label
         this->label4->AutoSize = true;
         this->label4->Location = System::Drawing::Point(
 24, 96 );
         this->label4->Size = System::Drawing::Size( 35,
 13 );
         
         // MouseButtons Label
         this->label5->AutoSize = true;
         this->label5->Location = System::Drawing::Point(
 24, 120 );
         this->label5->Size = System::Drawing::Size( 35,
 13 );
         
         // MouseButtonsSwapped Label
         this->label6->AutoSize = true;
         this->label6->Location = System::Drawing::Point(
 320, 48 );
         this->label6->Size = System::Drawing::Size( 35,
 13 );
         
         // MouseWheelPresent Label
         this->label7->AutoSize = true;
         this->label7->Location = System::Drawing::Point(
 320, 72 );
         this->label7->Size = System::Drawing::Size( 35,
 13 );
         
         // MouseWheelScrollLines Label
         this->label8->AutoSize = true;
         this->label8->Location = System::Drawing::Point(
 320, 96 );
         this->label8->Size = System::Drawing::Size( 35,
 13 );
         
         // NativeMouseWheelSupport Label
         this->label9->AutoSize = true;
         this->label9->Location = System::Drawing::Point(
 320, 120 );
         this->label9->Size = System::Drawing::Size( 35,
 13 );
         
         // Mouse Panel
         this->panel1->Anchor = static_cast<System::Windows::Forms::AnchorStyles>(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 = System::Drawing::Point(
 16, 160 );
         this->panel1->Size = System::Drawing::Size( 664,
 320 );
         this->panel1->MouseUp += gcnew System::Windows::Forms::MouseEventHandler(
 this, &Form1::panel1_MouseUp );
         this->panel1->Paint += gcnew System::Windows::Forms::PaintEventHandler(
 this, &Form1::panel1_Paint );
         this->panel1->MouseEnter += gcnew System::EventHandler(
 this, &Form1::panel1_MouseEnter );
         this->panel1->MouseHover += gcnew System::EventHandler(
 this, &Form1::panel1_MouseHover );
         this->panel1->MouseMove += gcnew System::Windows::Forms::MouseEventHandler(
 this, &Form1::panel1_MouseMove );
         this->panel1->MouseLeave += gcnew System::EventHandler(
 this, &Form1::panel1_MouseLeave );
         this->panel1->MouseDown += gcnew System::Windows::Forms::MouseEventHandler(
 this, &Form1::panel1_MouseDown );
         this->panel1->MouseWheel += gcnew System::Windows::Forms::MouseEventHandler(
 this, &Form1::panel1_MouseWheel );
         
         // Clear Button
         this->clearButton->Anchor = static_cast<System::Windows::Forms::AnchorStyles>(System::Windows::Forms::AnchorStyles::Top
 | System::Windows::Forms::AnchorStyles::Right);
         this->clearButton->Location = System::Drawing::Point(
 592, 504 );
         this->clearButton->TabIndex = 1;
         this->clearButton->Text = "Clear";
         this->clearButton->Click += gcnew System::EventHandler(
 this, &Form1::clearButton_Click );
         
         // GroupBox
         this->groupBox1->Anchor = static_cast<System::Windows::Forms::AnchorStyles>(System::Windows::Forms::AnchorStyles::Top
 | System::Windows::Forms::AnchorStyles::Left | System::Windows::Forms::AnchorStyles::Right);
         this->groupBox1->Location = System::Drawing::Point(
 16, 24 );
         this->groupBox1->Size = 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 = System::Drawing::Size( 696, 534
 );
         array<System::Windows::Forms::Control^>^temp0 = {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->Controls->AddRange( temp0 );
         this->Text = "Mouse Event Example";
         
         // Displays information about the system mouse.
         label2->Text = "SystemInformation::DoubleClickSize: {0}",SystemInformation::DoubleClickSize;
         label3->Text = "SystemInformation::DoubleClickTime: {0}",SystemInformation::DoubleClickTime;
         label4->Text = "SystemInformation::MousePresent: {0}",SystemInformation::MousePresent;
         label5->Text = "SystemInformation::MouseButtons: {0}",SystemInformation::MouseButtons;
         label6->Text = "SystemInformation::MouseButtonsSwapped: {0}"
,SystemInformation::MouseButtonsSwapped;
         label7->Text = "SystemInformation::MouseWheelPresent: {0}"
,SystemInformation::MouseWheelPresent;
         label8->Text = "SystemInformation::MouseWheelScrollLines: {0}"
,SystemInformation::MouseWheelScrollLines;
         label9->Text = "SystemInformation::NativeMouseWheelSupport: {0}"
,SystemInformation::NativeMouseWheelSupport;
      }

   private:
      void panel1_MouseDown( Object^ /*sender*/, System::Windows::Forms::MouseEventArgs^
 e )
      {
         // Update the mouse path with the mouse information
         Point mouseDownLocation = Point(e->X,e->Y);
         String^ eventString = nullptr;
         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 != nullptr )
         {
            mousePath->AddString( eventString, FontFamily::GenericSerif, (int)FontStyle::Bold,
 (float)fontSize, mouseDownLocation, StringFormat::GenericDefault
 );
         }
         else
         {
            mousePath->AddLine( mouseDownLocation, mouseDownLocation );
         }

         panel1->Focus();
         panel1->Invalidate();
      }

      void panel1_MouseEnter( Object^ sender, System::EventArgs^
 /*e*/ )
      {
         
         // Update the mouse event label to indicate the MouseEnter
 event occurred.
         label1->Text = String::Concat( sender->GetType(), ": MouseEnter"
 );
      }

      void panel1_MouseHover( Object^ sender, System::EventArgs^
 /*e*/ )
      {
         
         // Update the mouse event label to indicate the MouseHover
 event occurred.
         label1->Text = String::Concat( sender->GetType(), ": MouseHover"
 );
      }

      void panel1_MouseLeave( Object^ sender, System::EventArgs^
 /*e*/ )
      {
         
         // Update the mouse event label to indicate the MouseLeave
 event occurred.
         label1->Text = String::Concat( sender->GetType(), ": MouseLeave"
 );
      }

      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 );
      }

      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 = gcnew System::Drawing::Drawing2D::Matrix;
            translateMatrix->Translate( 0, (float)numberOfPixelsToMove
 );
            mousePath->Transform(translateMatrix);
         }

         panel1->Invalidate();
      }

      void panel1_MouseUp( Object^ /*sender*/, System::Windows::Forms::MouseEventArgs^
 e )
      {
         Point mouseUpLocation = System::Drawing::Point( e->X, e->Y );
         
         // Show the number of clicks in the path graphic.
         int numberOfClicks = e->Clicks;
         mousePath->AddString( String::Format( "   {0}", numberOfClicks
 ), FontFamily::GenericSerif, (int)FontStyle::Bold, (float)fontSize,
 mouseUpLocation, StringFormat::GenericDefault );
         panel1->Invalidate();
      }

      void panel1_Paint( Object^ /*sender*/, System::Windows::Forms::PaintEventArgs^
 e )
      {
         // Perform the painting of the Panel.
         e->Graphics->DrawPath( System::Drawing::Pens::DarkRed, mousePath );
      }

      void clearButton_Click( Object^ /*sender*/, System::EventArgs^
 /*e*/ )
      {
         // Clear the Panel display.
         delete mousePath;
         mousePath = gcnew System::Drawing::Drawing2D::GraphicsPath;
         panel1->Invalidate();
      }
   };
}

[STAThread]
int main()
{
   Application::Run( gcnew MouseEvent::Form1 );
}

package MouseEvent;
import System.*;
import System.Drawing.*;
import System.Windows.Forms.*;

public class Form1 extends 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;

    /** @attribute STAThread()
     */
    public static void main(String[]
 args)
    {
        Application.Run(new Form1());
    } //main

    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.set_Location(new System.Drawing.Point(24,
 504));
        this.label1.set_Size(new System.Drawing.Size(392,
 23));
        // DoubleClickSize Label
        this.label2.set_AutoSize(true);
        this.label2.set_Location(new System.Drawing.Point(24,
 48));
        this.label2.set_Size(new System.Drawing.Size(35,
 13));
        // DoubleClickTime Label
        this.label3.set_AutoSize(true);
        this.label3.set_Location(new System.Drawing.Point(24,
 72));
        this.label3.set_Size(new System.Drawing.Size(35,
 13));
        // MousePresent Label
        this.label4.set_AutoSize(true);
        this.label4.set_Location(new System.Drawing.Point(24,
 96));
        this.label4.set_Size(new System.Drawing.Size(35,
 13));
        // MouseButtons Label
        this.label5.set_AutoSize(true);
        this.label5.set_Location(new System.Drawing.Point(24,
 120));
        this.label5.set_Size(new System.Drawing.Size(35,
 13));
        // MouseButtonsSwapped Label
        this.label6.set_AutoSize(true);
        this.label6.set_Location(new System.Drawing.Point(320,
 48));
        this.label6.set_Size(new System.Drawing.Size(35,
 13));
        // MouseWheelPresent Label
        this.label7.set_AutoSize(true);
        this.label7.set_Location(new System.Drawing.Point(320,
 72));
        this.label7.set_Size(new System.Drawing.Size(35,
 13));
        // MouseWheelScrollLines Label
        this.label8.set_AutoSize(true);
        this.label8.set_Location(new System.Drawing.Point(320,
 96));
        this.label8.set_Size(new System.Drawing.Size(35,
 13));
        // NativeMouseWheelSupport Label
        this.label9.set_AutoSize(true);
        this.label9.set_Location(new System.Drawing.Point(320,
 120));
        this.label9.set_Size(new System.Drawing.Size(35,
 13));
        // Mouse Panel
        this.panel1.set_Anchor(System.Windows.Forms.AnchorStyles.Top
            | System.Windows.Forms.AnchorStyles.Left
            | System.Windows.Forms.AnchorStyles.Right);
        this.panel1.set_BackColor(System.Drawing.SystemColors.get_ControlDark());
        this.panel1.set_Location(new System.Drawing.Point(16,
 160));
        this.panel1.set_Size(new System.Drawing.Size(664,
 320));
        this.panel1.add_MouseUp(
            new System.Windows.Forms.MouseEventHandler(this.panel1_MouseUp));
        this.panel1.add_Paint(new System.Windows.Forms.PaintEventHandler(
            this.panel1_Paint));
        this.panel1.add_MouseEnter(new System.EventHandler(
            this.panel1_MouseEnter));
        this.panel1.add_MouseHover(new System.EventHandler(
            this.panel1_MouseHover));
        this.panel1.add_MouseMove(
            new System.Windows.Forms.MouseEventHandler(this.panel1_MouseMove));
        this.panel1.add_MouseLeave(
            new System.EventHandler(this.panel1_MouseLeave));
        this.panel1.add_MouseDown(
            new System.Windows.Forms.MouseEventHandler(this.panel1_MouseDown));
        this.panel1.add_MouseWheel(
            new System.Windows.Forms.MouseEventHandler(this.panel1_MouseWheel));
        // Clear Button
        this.clearButton.set_Anchor(System.Windows.Forms.AnchorStyles.Top
            | System.Windows.Forms.AnchorStyles.Right);
        this.clearButton.set_Location(new System.Drawing.Point(592,
 504));
        this.clearButton.set_TabIndex(1);
        this.clearButton.set_Text("Clear");
        this.clearButton.add_Click(new System.EventHandler(
            this.clearButton_Click));
        // GroupBox
        this.groupBox1.set_Anchor(System.Windows.Forms.AnchorStyles.Top
            | System.Windows.Forms.AnchorStyles.Left
            | System.Windows.Forms.AnchorStyles.Right);
        this.groupBox1.set_Location(new System.Drawing.Point(16,
 24));
        this.groupBox1.set_Size(new System.Drawing.Size(664,
 128));
        this.groupBox1.set_Text("System.Windows.Forms.SystemInformation");
        // Set up how the form should be displayed and add the controls
        // to the form.
        this.set_ClientSize(new System.Drawing.Size(696,
 534));
        this.get_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.set_Text("Mouse Event Example");
        // Displays information about the system mouse.
        label2.set_Text("SystemInformation.DoubleClickSize: "
            + SystemInformation.get_DoubleClickSize().ToString());
        label3.set_Text("SystemInformation.DoubleClickTime: "
            + ((Int32)SystemInformation.get_DoubleClickTime()).ToString());
        label4.set_Text("SystemInformation.MousePresent: "
            + ((System.Boolean)SystemInformation.get_MousePresent()).ToString());
        label5.set_Text("SystemInformation.MouseButtons: "
            + ((Int32)SystemInformation.get_MouseButtons()).ToString());
        label6.set_Text("SystemInformation.MouseButtonsSwapped: "
            + ((System.Boolean)SystemInformation.get_MouseButtonsSwapped()).
            ToString());
        label7.set_Text("SystemInformation.MouseWheelPresent: "
            + ((System.Boolean)SystemInformation.get_MouseWheelPresent()).
            ToString());
        label8.set_Text("SystemInformation.MouseWheelScrollLines: "
            + ((Int32)SystemInformation.get_MouseWheelScrollLines()).
            ToString());
        label9.set_Text("SystemInformation.NativeMouseWheelSupport: "
            + ((System.Boolean)SystemInformation.
            get_NativeMouseWheelSupport()).ToString());
    } //Form1

    private void panel1_MouseDown(Object sender
,
        System.Windows.Forms.MouseEventArgs e)
    {
        // Update the mouse path with the mouse information
        Point mouseDownLocation = new Point(e.get_X(), e.get_Y());

        String eventString = null;
        switch (e.get_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.get_GenericSerif(),
                (int)FontStyle.Bold, fontSize, mouseDownLocation
,
                StringFormat.get_GenericDefault());
        }
        else {
            mousePath.AddLine(mouseDownLocation, mouseDownLocation);
        }
        panel1.Focus();
        panel1.Invalidate();
    } //panel1_MouseDown

    private void panel1_MouseEnter(Object sender,
 System.EventArgs e)
    {
        // Update the mouse event label to indicate the MouseEnter event
 occurred.
        label1.set_Text(sender.GetType().ToString() + ": MouseEnter");
    } //panel1_MouseEnter

    private void panel1_MouseHover(Object sender,
 System.EventArgs e)
    {
        // Update the mouse event label to indicate the MouseHover event
 occurred.
        label1.set_Text(sender.GetType().ToString() + ": MouseHover");
    } //panel1_MouseHover

    private void panel1_MouseLeave(Object sender,
 System.EventArgs e)
    {
        // Update the mouse event label to indicate the MouseLeave event
 occurred.
        label1.set_Text(sender.GetType().ToString() + ": MouseLeave");
    } //panel1_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.get_X();
        int mouseY = e.get_Y();

        mousePath.AddLine(mouseX, mouseY, mouseX, mouseY);
    } //panel1_MouseMove

    private void panel1_MouseWheel(Object sender
,
        System.Windows.Forms.MouseEventArgs e)
    {
        // Update the drawing based upon the mouse wheel scrolling.
        int numberOfTextLinesToMove =
            e.get_Delta() * SystemInformation.get_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();
    } //panel1_MouseWheel

    private void panel1_MouseUp(Object sender
,
        System.Windows.Forms.MouseEventArgs e)
    {
        Point mouseUpLocation = new System.Drawing.Point(e.get_X(),
 e.get_Y());
        // Show the number of clicks in the path graphic.
        int numberOfClicks = e.get_Clicks();
        mousePath.AddString("    " + ((Int32)numberOfClicks).ToString()
,
            FontFamily.get_GenericSerif(), (int)(FontStyle.Bold),
 fontSize,
            mouseUpLocation, StringFormat.get_GenericDefault());

        panel1.Invalidate();
    } //panel1_MouseUp

    private void panel1_Paint(Object sender
,
        System.Windows.Forms.PaintEventArgs e)
    {
        // Perform the painting of the Panel.
        e.get_Graphics().DrawPath(System.Drawing.Pens.get_DarkRed(), mousePath);
    } //panel1_Paint

    private void clearButton_Click(Object sender,
 System.EventArgs e)
    {
        // Clear the Panel display.
        mousePath.Dispose();
        mousePath = new System.Drawing.Drawing2D.GraphicsPath();
        panel1.Invalidate();
    } //clearButton_Click
} //Form1