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Procedimiento para usar la propiedad Spring de manera interactiva en un control StatusStrip

  • Artículo

Puede utilizar la propiedad Spring para colocar un control ToolStripStatusLabel en un control StatusStrip. La propiedad Spring determina si el control ToolStripStatusLabel rellena automáticamente el espacio disponible en el control StatusStrip.

Ejemplo

El ejemplo de código siguiente muestra cómo utilizar la propiedad Spring para colocar un control ToolStripStatusLabel en un control StatusStrip. El controlador de eventos Click realiza una operación OR exclusiva (XOR) para cambiar el valor de la propiedad Spring.

Para utilizar este ejemplo de código, compile y ejecute la aplicación y, a continuación, haga clic en Middle (Spring) en el control StatusStrip para cambiar el valor de la propiedad Spring.

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 using the Spring property
// to interactively center a ToolStripStatusLabel in a StatusStrip.
class Form4 : Form
{
    // Declare the ToolStripStatusLabel.
    ToolStripStatusLabel middleLabel;

    public Form4()
    {
        // Create a new StatusStrip control.
        StatusStrip ss = new StatusStrip();

        // Add the leftmost label.
        ss.Items.Add("Left");

        // Handle middle label separately -- action will occur
        // when the label is clicked.
        middleLabel = new ToolStripStatusLabel("Middle (Spring)");
        middleLabel.Click += new EventHandler(middleLabel_Click);
        ss.Items.Add(middleLabel);

        // Add the rightmost label
        ss.Items.Add("Right");

        // Add the StatusStrip control to the controls collection.
        this.Controls.Add(ss);
    }

    // This event hadler is invoked when the
    // middleLabel control is clicked. It toggles
    // the value of the Spring property.
    void middleLabel_Click(object sender, EventArgs e)
    {
        // Toggle the value of the Spring property.
        middleLabel.Spring ^= true;

        // Set the Text property according to the
        // value of the Spring property.
        middleLabel.Text =
            middleLabel.Spring ? "Middle (Spring - True)" : "Middle (Spring - False)";
    }
}

' This code example demonstrates using the Spring property 
' to interactively center a ToolStripStatusLabel in a StatusStrip.
Class Form4
    Inherits Form

   ' Declare the ToolStripStatusLabel.
   Private middleLabel As ToolStripStatusLabel
   
   
   Public Sub New()
      ' Create a new StatusStrip control.
      Dim ss As New StatusStrip()
      
      ' Add the leftmost label.
      ss.Items.Add("Left")
      
      ' Handle middle label separately -- action will occur
      ' when the label is clicked.
      middleLabel = New ToolStripStatusLabel("Middle (Spring)")
      AddHandler middleLabel.Click, AddressOf middleLabel_Click
      ss.Items.Add(middleLabel)
      
      ' Add the rightmost label
      ss.Items.Add("Right")
      
      ' Add the StatusStrip control to the controls collection.
      Me.Controls.Add(ss)
    End Sub
   
   ' This event hadler is invoked when the 
   ' middleLabel control is clicked. It toggles
   ' the value of the Spring property.
    Sub middleLabel_Click(ByVal sender As Object, ByVal e As EventArgs)

        ' Toggle the value of the Spring property.
        middleLabel.Spring = middleLabel.Spring Xor True

        ' Set the Text property according to the
        ' value of the Spring property. 
        middleLabel.Text = IIf(middleLabel.Spring, _
        "Middle (Spring - True)", "Middle (Spring - False)")
    End Sub
End Class

Compilar el código

Para este ejemplo se necesita:

  • Referencias a los ensamblados System.Design, System.Drawing y System.Windows.Forms.

Vea también