ComponentDesigner クラスとは何？わかりやすく解説 Weblio辞書

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.NET Framework クラスライブラリリファレンス

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ComponentDesigner クラス

コンポーネントのデザインモードの動作を拡張します。

名前空間: System.ComponentModel.Design
アセンブリ: System.Design (system.design.dll 内)
構文

Visual Basic (宣言)

Public Class ComponentDesigner
    Implements ITreeDesigner, IDesigner, IDisposable, IDesignerFilter,
 _
    IComponentInitializer

Visual Basic (使用法)

Dim instance As ComponentDesigner

public class ComponentDesigner : ITreeDesigner,
 IDesigner, IDisposable, 
    IDesignerFilter, IComponentInitializer

C++

public ref class ComponentDesigner : ITreeDesigner,
 IDesigner, IDisposable, 
    IDesignerFilter, IComponentInitializer

public class ComponentDesigner implements ITreeDesigner,
 IDesigner, 
    IDisposable, IDesignerFilter, IComponentInitializer

JScript

public class ComponentDesigner implements ITreeDesigner,
 IDesigner, 
    IDisposable, IDesignerFilter, IComponentInitializer

解説

ComponentDesigner ベースのデザイナクラスは、デザインモードの関連付けられているコンポーネントの動作を拡張できる簡単なデザイナを提供します。

ComponentDesigner は、空の IDesignerFilter インターフェイス実装を提供します。このクラスのメソッドは、デザイン時に関連付けられているコンポーネントの属性、プロパティ、およびイベントを調整するようにオーバーライドできます。

DesignerAttribute を使用してデザイナに型を関連付けることができます。デザイン時の動作のカスタマイズの概要については、「デザイン時サポートの拡張」を参照してください。

使用例

ComponentDesigner 実装の例とデザイナに関連付けられているコンポーネントの例を次のコード例に示します。このデザイナは、基本クラスの Initialize メソッドを呼び出す Initialize メソッドのオーバーライド、コンポーネントがダブルクリックされたときに MessageBox を表示する DoDefaultAction メソッドのオーバーライド、およびコンポーネントのショートカットメニューへのカスタム DesignerVerb メニューコマンドを提供する Verbs プロパティアクセサのオーバーライドを実装します。

Visual Basic

Imports System
Imports System.Collections
Imports System.ComponentModel
Imports System.ComponentModel.Design
Imports System.Drawing
Imports System.Windows.Forms

Namespace ExampleComponent

    ' Provides an example component designer.
    Public Class ExampleComponentDesigner
        Inherits System.ComponentModel.Design.ComponentDesigner

        Public Sub New()
        End Sub 'New

        ' 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 Overrides Sub
 Initialize(ByVal component As System.ComponentModel.IComponent)
            ' Always call the base Initialize method in an override
 of this method.
            MyBase.Initialize(component)
        End Sub 'Initialize

        ' This method is invoked when the associated component is double-clicked.
        Public Overrides Sub
 DoDefaultAction()
            MessageBox.Show("The event handler for the default
 action was invoked.")
        End Sub 'DoDefaultAction

        ' This method provides designer verbs.
        Public Overrides ReadOnly
 Property Verbs() As System.ComponentModel.Design.DesignerVerbCollection
            Get
                Return New DesignerVerbCollection(New
 DesignerVerb() {New DesignerVerb("Example Designer Verb Command",
 New EventHandler(AddressOf Me.onVerb))})
            End Get
        End Property

        ' Event handling method for the example designer verb
        Private Sub onVerb(ByVal
 sender As Object, ByVal
 e As EventArgs)
            MessageBox.Show("The event handler for the Example
 Designer Verb Command was invoked.")
        End Sub 'onVerb
    End Class 'ExampleComponentDesigner

    ' Provides an example component associated with the example component
 designer.
    <DesignerAttribute(GetType(ExampleComponentDesigner), GetType(IDesigner))>
 _
     Public Class ExampleComponent
        Inherits System.ComponentModel.Component

        Public Sub New()
        End Sub 'New
    End Class 'ExampleComponent

End Namespace 'ExampleComponent

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()
        {
        }
    }
}

C++

#using <System.dll>
#using <System.Design.dll>
#using <System.Drawing.dll>
#using <System.Windows.Forms.dll>

using namespace System;
using namespace System::Collections;
using namespace System::ComponentModel;
using namespace System::ComponentModel::Design;
using namespace System::Drawing;
using namespace System::Windows::Forms;

// Provides an example component designer.
ref class ExampleComponentDesigner: public
 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.
   virtual void Initialize( IComponent^ component ) override
   {
      // Always call the base Initialize method in an of this method.
      ComponentDesigner::Initialize( component );
   }

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

   // This method provides designer verbs.
   property DesignerVerbCollection^ Verbs 
   {
      virtual DesignerVerbCollection^ get() override
      {
         array<DesignerVerb^>^ newDesignerVerbs = {gcnew DesignerVerb( "Example
 Designer Verb Command", gcnew EventHandler( this, &ExampleComponentDesigner::onVerb
 ) )};
         return gcnew DesignerVerbCollection( newDesignerVerbs
 );
      }
   }

private:
   // Event handling method for the example designer verb
   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(ExampleComponentDesigner::typeid, IDesigner::typeid)]
ref class ExampleComponent: public 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

継承階層

System.Object
System.ComponentModel.Design.ComponentDesigner
派生クラス

スレッドセーフ

この型の public static (Visual Basic では Shared) メンバはすべて、スレッドセーフです。インスタンスメンバの場合は、スレッドセーフであるとは限りません。

プラットフォーム

バージョン情報

.NET Framework
サポート対象 : 2.0、1.1、1.0

参照

関連項目
ComponentDesigner メンバ
System.ComponentModel.Design 名前空間
IDesigner
IDesignerFilter
DesignerAttribute クラス
その他の技術情報
デザイン時サポートの拡張
方法 : デザイン時サービスにアクセスする

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ComponentDesigner クラスとは？わかりやすく解説