MouseButtons Výčet
Definice
Důležité
Některé informace platí pro předběžně vydaný produkt, který se může zásadně změnit, než ho výrobce nebo autor vydá. Microsoft neposkytuje žádné záruky, výslovné ani předpokládané, týkající se zde uváděných informací.
Určuje konstanty, které definují, které tlačítko myši bylo stisknuto.
Tento výčet podporuje bitové kombinace hodnot jeho členů.
public enum class MouseButtons[System.Flags]
[System.Runtime.InteropServices.ComVisible(true)]
public enum MouseButtons[System.Flags]
public enum MouseButtons[<System.Flags>]
[<System.Runtime.InteropServices.ComVisible(true)>]
type MouseButtons = [<System.Flags>]
type MouseButtons = Public Enum MouseButtons- Dědičnost
- Atributy
Pole
| Left | 1048576 | Bylo stisknuto levé tlačítko myši. |
| Middle | 4194304 | Prostřední tlačítko myši bylo stisknuto. |
| None | 0 | Nebylo stisknuto žádné tlačítko myši. |
| Right | 2097152 | Bylo stisknuto pravé tlačítko myši. |
| XButton1 | 8388608 | Byl stisknut první XButton (XBUTTON1) v Aplikaci Microsoft IntelliMouse Explorer. |
| XButton2 | 16777216 | Druhý XButton (XBUTTON2) v Aplikaci Microsoft IntelliMouse Explorer byl stisknut. |
Příklady
Následující příklad ukazuje, jak použít metodu GetCharFromPosition k získání znaku RichTextBox z obsahu dané souřadnice ovládacího prvku. Ukázkový kód používá souřadnice umístěné v objektu MouseEventArgs předané jako parametr obslužné rutině události k určení umístění v ovládacím prvku pro získání znaku. Znak se pak zobrazí v MessageBox případě, že se nejedná o znak mezery. Tento příklad předpokládá, že RichTextBox byl vytvořen ovládací prvek s názvem richTextBox1 a že ukázkový kód je připojen k MouseDown události RichTextBox.
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.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 + ".");
}
}
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
Následující příklad ukazuje použití různých událostí myši k nakreslení cesty myši na Panel. Pro každou MouseMove událost a MouseDown události, ke kterým dojde, se přidá GraphicsPath segment čáry. Pro aktualizaci grafiky Invalidate je volána metoda pro Panel každý MouseDown a MouseUp událost. Kromě toho se při výskytu události posune grafická MouseWheel cesta nahoru nebo dolů. Další události myši, například MouseHover, jsou také identifikovány na obrazovce. Na obrazovce jsou také zobrazeny další informace o myši z SystemInformation třídy.
#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 );
}
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();
}
}
}
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
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
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 (eventString IsNot 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 = CInt(e.Delta * SystemInformation.MouseWheelScrollLines / 120)
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 As 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
End Namespace
Poznámky
Tento výčet používá mnoho tříd, včetně , , , , , , , StatusBar, a UpDownBase. SplitterRadioButtonFormDataGridControlAxHost
Platí pro
Spolupracujte s námi na GitHubu
Zdroj tohoto obsahu najdete na GitHubu, kde můžete také vytvářet a kontrolovat problémy a žádosti o přijetí změn. Další informace najdete v našem průvodci pro přispěvatele.
