ComponentDesigner-Klasse

using System;
using System.Collections;
using System.ComponentModel;
using System.ComponentModel.Design;
using System.Drawing;
using System.Windows.Forms;

namespace ExampleComponent
{	
    // Provides an example component designer.
    public class ExampleComponentDesigner : System.ComponentModel.Design.ComponentDesigner
    {
        public ExampleComponentDesigner()
        {
        }

        // This method provides an opportunity to perform processing when a designer is initialized.
        // The component parameter is the component that the designer is associated with.
        public override void Initialize(System.ComponentModel.IComponent component)
        {
            // Always call the base Initialize method in an override of this method.
            base.Initialize(component);
        }

        // This method is invoked when the associated component is double-clicked.
        public override void DoDefaultAction()
        {
            MessageBox.Show("The event handler for the default action was invoked.");
        }

        // This method provides designer verbs.
        public override System.ComponentModel.Design.DesignerVerbCollection Verbs
        {
            get
            {
                return new DesignerVerbCollection( new DesignerVerb[] { new DesignerVerb("Example Designer Verb Command", new EventHandler(this.onVerb)) } );
            }
        }

        // Event handling method for the example designer verb
        private void onVerb(object sender, EventArgs e)
        {
            MessageBox.Show("The event handler for the Example Designer Verb Command was invoked.");
        }
    }

    // Provides an example component associated with the example component designer.
    [DesignerAttribute(typeof(ExampleComponentDesigner), typeof(IDesigner))]
    public class ExampleComponent : System.ComponentModel.Component
    {		
        public ExampleComponent()
        {
        }
    }
}

package ExampleComponent;

import System.*;
import System.Collections.*;
import System.ComponentModel.*;
import System.ComponentModel.Design.*;
import System.Drawing.*;
import System.Windows.Forms.*;

// Provides an example component designer.
public class ExampleComponentDesigner
    extends System.ComponentModel.Design.ComponentDesigner
{
    public ExampleComponentDesigner()
    {
    } //ExampleComponentDesigner

    // This method provides an opportunity to perform processing when a
    // designer is initialized.The component parameter is the component that 
    // the designer is associated with.
    public void Initialize(System.ComponentModel.IComponent component)
    {
        // Always call the base Initialize method in an override of this method.
        super.Initialize(component);
    } //Initialize

    // This method is invoked when the associated component is double-clicked.
    public void DoDefaultAction()
    {
        MessageBox.Show("The event handler for the default action was invoked.");
    } //DoDefaultAction

    // This method provides designer verbs.
    /** @property 
     */
    public System.ComponentModel.Design.DesignerVerbCollection get_Verbs()
    {
        return new DesignerVerbCollection(new DesignerVerb[]
            { new DesignerVerb("Example Designer Verb Command",
            new EventHandler(this.OnVerb)) });
    } //get_Verbs

    // Event handling method for the example designer verb
    private void OnVerb(Object sender, EventArgs e)
    {
        MessageBox.Show("The event handler for the Example Designer Verb"
            + " Command was invoked.");
    } //OnVerb
} //ExampleComponentDesigner

// Provides an example component associated with the example component designer.
/** @attribute DesignerAttribute(ExampleComponentDesigner.class, IDesigner.class)
 */
public class ExampleComponent extends System.ComponentModel.Component
{
    public ExampleComponent()
    {
    } //ExampleComponent
} //ExampleComponent