Control.MouseHover イベント
マウス ポインタがコントロール上を移動すると発生します。
Public Event MouseHover As EventHandler
[C#]
public event EventHandler MouseHover;
[C++]
public: __event EventHandler* MouseHover;
[JScript] JScript では、このクラスで定義されているイベントを処理できます。ただし、独自に定義することはできません。
イベント データ
イベント ハンドラが EventArgs 型の引数を受け取りました。
解説
マウス イベントは次の順序で発生します。
- MouseEnter
- MouseMove
- MouseHover/ MouseDown/ MouseWheel
- MouseUp
- MouseLeave
メモ Click 、 DoubleClick 、 MouseDown 、 MouseUp 、 MouseHover 、 MouseEnter 、 MouseLeave 、 MouseMove の各イベントは、 TabControl.TabPages コレクションに 1 つ以上の TabPage が存在しない限り、 TabControl クラスで生成されません。コレクションに 1 つ以上の TabPage があり、ユーザーがタブ コントロールのヘッダー (TabPage の名前が表示される場所) と対話すると、 TabControl が適切なイベントを発生させます。ただし、ユーザーとの対話がタブ ページのクライアント領域内の場合、 TabPage は該当するイベントを発生させます。
イベント処理の詳細については、「 イベントの利用 」を参照してください。
使用例
[Visual Basic, C#, C++] 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。
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
[C#]
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 <mscorlib.dll>
#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 __gc 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 = 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 = 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 += new System::Windows::Forms::MouseEventHandler(this, &Form1::panel1_MouseUp);
this->panel1->Paint += new System::Windows::Forms::PaintEventHandler(this, &Form1::panel1_Paint);
this->panel1->MouseEnter += new System::EventHandler(this, &Form1::panel1_MouseEnter);
this->panel1->MouseHover += new System::EventHandler(this, &Form1::panel1_MouseHover);
this->panel1->MouseMove += new System::Windows::Forms::MouseEventHandler(this, &Form1::panel1_MouseMove);
this->panel1->MouseLeave += new System::EventHandler(this, &Form1::panel1_MouseLeave);
this->panel1->MouseDown += new System::Windows::Forms::MouseEventHandler(this, &Form1::panel1_MouseDown);
this->panel1->MouseWheel += new 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 = S"Clear";
this->clearButton->Click += new 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 = S"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);
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 = S"Mouse Event Example";
// Displays information about the system mouse.
label2->Text = S"SystemInformation::DoubleClickSize: {0}", SystemInformation::DoubleClickSize;
label3->Text = S"SystemInformation::DoubleClickTime: {0}", SystemInformation::DoubleClickTime;
label4->Text = S"SystemInformation::MousePresent: {0}", SystemInformation::MousePresent;
label5->Text = S"SystemInformation::MouseButtons: {0}", SystemInformation::MouseButtons;
label6->Text = S"SystemInformation::MouseButtonsSwapped: {0}", SystemInformation::MouseButtonsSwapped;
label7->Text = S"SystemInformation::MouseWheelPresent: {0}", SystemInformation::MouseWheelPresent;
label8->Text = S"SystemInformation::MouseWheelScrollLines: {0}", SystemInformation::MouseWheelScrollLines;
label9->Text = S"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 = 0;
switch (e->Button) {
case MouseButtons::Left:
eventString = S"L";
break;
case MouseButtons::Right:
eventString = S"R";
break;
case MouseButtons::Middle:
eventString = S"M";
break;
case MouseButtons::XButton1:
eventString = S"X1";
break;
case MouseButtons::XButton2:
eventString = S"X2";
break;
case MouseButtons::None:
default:
break;
}
if (eventString != 0) {
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(), S": 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(), S": 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(), S": 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 = new 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( S" {0}", __box(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.
mousePath->Dispose();
mousePath = new System::Drawing::Drawing2D::GraphicsPath();
panel1->Invalidate();
}
};
}
[STAThread]
int main() {
Application::Run(new MouseEvent::Form1());
}
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必要条件
プラットフォーム: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 ファミリ
参照
Control クラス | Control メンバ | System.Windows.Forms 名前空間 | OnMouseHover