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Vorgehensweise: Festlegen des ToolStrip-Renderers zur Laufzeit

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Sie können die Darstellung des ToolStrip-Steuerelements anpassen, indem Sie eine benutzerdefinierte ProfessionalColorTable-Klasse erstellen.

Beispiel

Im folgenden Codebeispiel wird veranschaulicht, wie eine benutzerdefinierte ProfessionalColorTable-Klasse erstellt wird. Diese Klasse definiert Farbverläufe für ein MenuStrip- und ein ToolStrip-Steuerelement.

Um dieses Codebeispiel zu verwenden, kompilieren Sie die Anwendung, führen Sie die Anwendung aus, und klicken Sie dann auf Change Colors (Farben ändern), um die Farbverläufe anzuwenden, die in der benutzerdefinierten ProfessionalColorTable-Klasse definiert sind.

using System;
using System.Collections.Generic;
using System.Windows.Forms;
using System.Drawing;

Imports System.Collections.Generic
Imports System.Windows.Forms
Imports System.Drawing

// This code example demonstrates how to use a ProfessionalRenderer
// to define custom professional colors at runtime.
class Form2 : Form
{
    public Form2()
    {
        // Create a new ToolStrip control.
        ToolStrip ts = new ToolStrip();

        // Populate the ToolStrip control.
        ts.Items.Add("Apples");
        ts.Items.Add("Oranges");
        ts.Items.Add("Pears");
        ts.Items.Add(
            "Change Colors",
            null,
            new EventHandler(ChangeColors_Click));

        // Create a new MenuStrip.
        MenuStrip ms = new MenuStrip();

        // Dock the MenuStrip control to the top of the form.
        ms.Dock = DockStyle.Top;

        // Add the top-level menu items.
        ms.Items.Add("File");
        ms.Items.Add("Edit");
        ms.Items.Add("View");
        ms.Items.Add("Window");

        // Add the ToolStrip to Controls collection.
        this.Controls.Add(ts);

        // Add the MenuStrip control last.
        // This is important for correct placement in the z-order.
        this.Controls.Add(ms);
    }

    // This event handler is invoked when the "Change colors"
    // ToolStripItem is clicked. It assigns the Renderer
    // property for the ToolStrip control.
    void ChangeColors_Click(object sender, EventArgs e)
    {
        ToolStripManager.Renderer =
            new ToolStripProfessionalRenderer(new CustomProfessionalColors());
    }
}

// This class defines the gradient colors for
// the MenuStrip and the ToolStrip.
class CustomProfessionalColors : ProfessionalColorTable
{
    public override Color ToolStripGradientBegin
    { get { return Color.BlueViolet; } }

    public override Color ToolStripGradientMiddle
    { get { return Color.CadetBlue; } }

    public override Color ToolStripGradientEnd
    { get { return Color.CornflowerBlue; } }

    public override Color MenuStripGradientBegin
    { get { return Color.Salmon; } }

    public override Color MenuStripGradientEnd
    { get { return Color.OrangeRed; } }
}

' This code example demonstrates how to use a ProfessionalRenderer
' to define custom professional colors at runtime.
Class Form2
   Inherits Form
   
   Public Sub New()
      ' Create a new ToolStrip control.
      Dim ts As New ToolStrip()
      
      ' Populate the ToolStrip control.
      ts.Items.Add("Apples")
      ts.Items.Add("Oranges")
      ts.Items.Add("Pears")
      ts.Items.Add("Change Colors", Nothing, New EventHandler(AddressOf ChangeColors_Click))
      
      ' Create a new MenuStrip.
      Dim ms As New MenuStrip()

      ' Dock the MenuStrip control to the top of the form.
      ms.Dock = DockStyle.Top
      
      ' Add the top-level menu items.
      ms.Items.Add("File")
      ms.Items.Add("Edit")
      ms.Items.Add("View")
      ms.Items.Add("Window")
      
      ' Add the ToolStrip to Controls collection.
      Me.Controls.Add(ts)
      
      ' Add the MenuStrip control last.
      ' This is important for correct placement in the z-order.
      Me.Controls.Add(ms)
    End Sub
   
   ' This event handler is invoked when the "Change colors"
   ' ToolStripItem is clicked. It assigns the Renderer
   ' property for the ToolStrip control.
    Sub ChangeColors_Click(ByVal sender As Object, ByVal e As EventArgs)
        ToolStripManager.Renderer = New ToolStripProfessionalRenderer(New CustomProfessionalColors())
    End Sub
End Class

' This class defines the gradient colors for 
' the MenuStrip and the ToolStrip.
Class CustomProfessionalColors
   Inherits ProfessionalColorTable
   
   Public Overrides ReadOnly Property ToolStripGradientBegin() As Color
      Get
         Return Color.BlueViolet
      End Get 
   End Property
   
   Public Overrides ReadOnly Property ToolStripGradientMiddle() As Color
      Get
         Return Color.CadetBlue
      End Get 
   End Property
   
   Public Overrides ReadOnly Property ToolStripGradientEnd() As Color
      Get
         Return Color.CornflowerBlue
      End Get 
   End Property
   
   Public Overrides ReadOnly Property MenuStripGradientBegin() As Color
      Get
         Return Color.Salmon
      End Get 
   End Property
   
   Public Overrides ReadOnly Property MenuStripGradientEnd() As Color
      Get
         Return Color.OrangeRed
      End Get
    End Property

End Class

Definieren einer benutzerdefinierten ProfessionalColorTable-Klasse

Die benutzerdefinierten Farbverläufe sind in der CustomProfessionalColors-Klasse definiert.

// This class defines the gradient colors for
// the MenuStrip and the ToolStrip.
class CustomProfessionalColors : ProfessionalColorTable
{
    public override Color ToolStripGradientBegin
    { get { return Color.BlueViolet; } }

    public override Color ToolStripGradientMiddle
    { get { return Color.CadetBlue; } }

    public override Color ToolStripGradientEnd
    { get { return Color.CornflowerBlue; } }

    public override Color MenuStripGradientBegin
    { get { return Color.Salmon; } }

    public override Color MenuStripGradientEnd
    { get { return Color.OrangeRed; } }
}

' This class defines the gradient colors for 
' the MenuStrip and the ToolStrip.
Class CustomProfessionalColors
   Inherits ProfessionalColorTable
   
   Public Overrides ReadOnly Property ToolStripGradientBegin() As Color
      Get
         Return Color.BlueViolet
      End Get 
   End Property
   
   Public Overrides ReadOnly Property ToolStripGradientMiddle() As Color
      Get
         Return Color.CadetBlue
      End Get 
   End Property
   
   Public Overrides ReadOnly Property ToolStripGradientEnd() As Color
      Get
         Return Color.CornflowerBlue
      End Get 
   End Property
   
   Public Overrides ReadOnly Property MenuStripGradientBegin() As Color
      Get
         Return Color.Salmon
      End Get 
   End Property
   
   Public Overrides ReadOnly Property MenuStripGradientEnd() As Color
      Get
         Return Color.OrangeRed
      End Get
    End Property

End Class

Zuweisen eines benutzerdefinierten Renderers

Erstellen Sie eine neue ToolStripProfessionalRenderer-Instanz mit der CustomProfessionalColors-Klasse, und weisen Sie diese Instanz der ToolStripManager.Renderer-Eigenschaft zu.

// This event handler is invoked when the "Change colors"
// ToolStripItem is clicked. It assigns the Renderer
// property for the ToolStrip control.
void ChangeColors_Click(object sender, EventArgs e)
{
    ToolStripManager.Renderer =
        new ToolStripProfessionalRenderer(new CustomProfessionalColors());
}

' This event handler is invoked when the "Change colors"
' ToolStripItem is clicked. It assigns the Renderer
' property for the ToolStrip control.
 Sub ChangeColors_Click(ByVal sender As Object, ByVal e As EventArgs)
     ToolStripManager.Renderer = New ToolStripProfessionalRenderer(New CustomProfessionalColors())
 End Sub

Kompilieren des Codes

Für dieses Beispiel benötigen Sie Folgendes:

  • Verweise auf die Assemblys "System.Design", "System.Drawing" und "System.Windows.Forms".

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