TabControl.DisplayRectangle-Eigenschaft

Ruft den Anzeigebereich für die Registerkarten des Steuerelements ab.

Namespace: System.Windows.Forms
Assembly: System.Windows.Forms (in system.windows.forms.dll)

Syntax

'Declaration
Public Overrides ReadOnly Property DisplayRectangle As Rectangle
'Usage
Dim instance As TabControl
Dim value As Rectangle

value = instance.DisplayRectangle

public override Rectangle DisplayRectangle { get; }

public:
virtual property Rectangle DisplayRectangle {
    Rectangle get () override;
}

/** @property */
public Rectangle get_DisplayRectangle ()

public override function get DisplayRectangle () : Rectangle

Eigenschaftenwert

Ein Rectangle, das den Anzeigebereich der Registerkarten darstellt.

Beispiel

Im folgenden Codebeispiel wird ein TabControl mit einer TabPage erstellt. Im Beispiel wird die DisplayRectangle-Eigenschaft dazu verwendet, ein Rectangle zu zeichnen, das dem Anzeigebereich der Registerkarten von tabControl1 entspricht. Beachten Sie, dass im Beispiel die Inflate-Methode verwendet wird. Andernfalls würde der TabPage-Zeichnungscode das in der DrawOnTabPage-Methode gezeichnete Rectangle überschreiben.

Verwenden Sie für dieses Beispiel den System.Drawing-Namespace und den System.Windows.Forms-Namespace.

Imports System.Drawing
Imports System.Windows.Forms

Public Class Form1
   Inherits Form
   Private myTabRect As Rectangle
   
   Public Sub New()
      Dim tabControl1 As New TabControl()
      Dim tabPage1 As New TabPage()
      
      tabControl1.DrawMode = TabDrawMode.OwnerDrawFixed
      tabControl1.Appearance = TabAppearance.Buttons
      tabControl1.Location = New Point(25, 25)
      tabControl1.Controls.Add(tabPage1)
      Controls.Add(tabControl1)
      
      ' Gets a Rectangle that represents the tab page display area of tabControl1.
      myTabRect = tabControl1.DisplayRectangle
      
      myTabRect.Inflate(1, 1)
      AddHandler tabControl1.DrawItem, AddressOf DrawOnTabPage
   End Sub
   
   Private Sub DrawOnTabPage(sender As Object, e As DrawItemEventArgs)
      Dim g As Graphics = e.Graphics
      Dim p As New Pen(Color.Blue)
      g.DrawRectangle(p, myTabRect)
   End Sub
   
   Shared Sub Main()
      Application.Run(New Form1())
   End Sub
End Class

using System.Drawing;
using System.Windows.Forms;

public class Form1 : Form
{
    private Rectangle myTabRect;

    public Form1()
    {
        TabControl tabControl1 = new TabControl();
        TabPage tabPage1 = new TabPage();

        tabControl1.DrawMode = TabDrawMode.OwnerDrawFixed;
        tabControl1.Appearance = TabAppearance.Buttons;
        tabControl1.Location = new Point(25, 25);
        tabControl1.Controls.Add(tabPage1);
        Controls.Add(tabControl1);

        // Gets a Rectangle that represents the tab page display area of tabControl1.
        myTabRect = tabControl1.DisplayRectangle;

        myTabRect.Inflate(1, 1); 
        tabControl1.DrawItem += new DrawItemEventHandler(DrawOnTabPage);
    }

    private void DrawOnTabPage(object sender, DrawItemEventArgs e)
    {
        Graphics g = e.Graphics;
        Pen p = new Pen(Color.Blue);
        g.DrawRectangle(p, myTabRect);
    }

    static void Main() 
    {
        Application.Run(new Form1());
    }
}

using namespace System::Drawing;
using namespace System::Windows::Forms;
public ref class Form1: public Form
{
private:
   Rectangle myTabRect;

public:
   Form1()
   {
      TabControl^ tabControl1 = gcnew TabControl;
      TabPage^ tabPage1 = gcnew TabPage;
      tabControl1->DrawMode = TabDrawMode::OwnerDrawFixed;
      tabControl1->Appearance = TabAppearance::Buttons;
      tabControl1->Location = Point(25,25);
      tabControl1->Controls->Add( tabPage1 );
      Controls->Add( tabControl1 );
      
      // Gets a Rectangle that represents the tab page display area of tabControl1.
      myTabRect = tabControl1->DisplayRectangle;
      myTabRect.Inflate( 1, 1 );
      tabControl1->DrawItem += gcnew DrawItemEventHandler( this, &Form1::DrawOnTabPage );
   }


private:
   void DrawOnTabPage( Object^ /*sender*/, DrawItemEventArgs^ e )
   {
      Graphics^ g = e->Graphics;
      Pen^ p = gcnew Pen( Color::Blue );
      g->DrawRectangle( p, myTabRect );
   }

};

int main()
{
   Application::Run( gcnew Form1 );
}

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

public class Form1 extends Form
{
    private Rectangle myTabRect;

    public Form1()
    {
        TabControl tabControl1 = new TabControl();
        TabPage tabPage1 = new TabPage();

        tabControl1.set_DrawMode(TabDrawMode.OwnerDrawFixed);
        tabControl1.set_Appearance(TabAppearance.Buttons);
        tabControl1.set_Location(new Point(25, 25));
        tabControl1.get_Controls().Add(tabPage1);
        get_Controls().Add(tabControl1);

        // Gets a Rectangle that represents the tab page display 
        // area of tabControl1.
        myTabRect = tabControl1.get_DisplayRectangle();
        myTabRect.Inflate(1, 1);
        tabControl1.add_DrawItem(new DrawItemEventHandler(DrawOnTabPage));
    } //Form1

    private void DrawOnTabPage(Object sender, DrawItemEventArgs e)
    {
        Graphics g = e.get_Graphics();
        Pen p = new Pen(Color.get_Blue());

        g.DrawRectangle(p, myTabRect);
    } //DrawOnTabPage

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

Plattformen

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile für Pocket PC, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

.NET Framework unterstützt nicht alle Versionen sämtlicher Plattformen. Eine Liste der unterstützten Versionen finden Sie unter Systemanforderungen.

Versionsinformationen

.NET Framework

Unterstützt in: 2.0, 1.1, 1.0

Siehe auch

Referenz

TabControl-Klasse
TabControl-Member
System.Windows.Forms-Namespace
Rectangle