EventsTab クラス

.NET Framework クラス ライブラリ リファレンス

EventsTab クラス

選択およびリンクのためのイベントを表示できる PropertyTab を提供します。

名前空間: System.Windows.Forms.Design
アセンブリ: System.Windows.Forms (system.windows.forms.dll 内)
構文

Visual Basic (宣言)

Public Class EventsTab
    Inherits PropertyTab

Visual Basic (使用法)

Dim instance As EventsTab

C#

public class EventsTab : PropertyTab

C++

public ref class EventsTab : public
 PropertyTab

J#

public class EventsTab extends PropertyTab

JScript

public class EventsTab extends
 PropertyTab

使用例

EventsTab のコード例を次に示します。選択すると、EventsTab には、デリゲート型の順序に従ってコンポーネントのイベントの一覧が表示されます。

C#

using System;
using System.ComponentModel;
using System.ComponentModel.Design;
using System.Collections;
using System.Drawing;
using System.IO;
using System.Reflection;
using System.Runtime.Serialization;
using System.Runtime.Serialization.Formatters.Binary;
using System.Windows.Forms;
using System.Windows.Forms.Design;

namespace EventsTabExample
{    
    // This component adds a TypeEventsTab to the Properties Window.
    [PropertyTabAttribute(typeof(TypeEventsTab), PropertyTabScope.Document)]
    public class TypeEventsTabComponent : Component
    {
        public TypeEventsTabComponent()
        {
        }
    }

    // This example events tab lists events by their delegate type.
    [System.Security.Permissions.PermissionSetAttribute(System.Security.Permissions.SecurityAction.InheritanceDemand,
 Name="FullTrust")]
    [System.Security.Permissions.PermissionSetAttribute(System.Security.Permissions.SecurityAction.LinkDemand,
 Name="FullTrust")]
    public class TypeEventsTab : System.Windows.Forms.Design.EventsTab
    {
        [BrowsableAttribute(true)]
        // This string contains a Base-64 encoded and serialized example
 
        // property tab image.
        private string img = "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";
        private IServiceProvider sp;

        public TypeEventsTab(IServiceProvider sp) : base(sp)
        {
            this.sp = sp;           
        }
                  
        // Returns the properties of the specified component extended
 with a 
        // CategoryAttribute reflecting the name of the type of the
 property.
        public override System.ComponentModel.PropertyDescriptorCollection
 
            GetProperties(ITypeDescriptorContext context, object component, 
            System.Attribute[] attributes)
        {            
            // Obtain an instance of the IEventBindingService.
            IEventBindingService eventPropertySvc = (IEventBindingService)
                sp.GetService(typeof(IEventBindingService));

            // Return if an IEventBindingService could not be obtained.
            if (eventPropertySvc == null) 
            
                return new PropertyDescriptorCollection(null);
            
            // Obtain the events on the component.
            EventDescriptorCollection events = 
                TypeDescriptor.GetEvents(component, attributes);       
     
            // Create an array of the events, where each event is assigned
 
            // a category matching its type.
            EventDescriptor[] newEvents = new EventDescriptor[events.Count];
            for(int i=0;i < events.Count;i++)
             
                newEvents[i] = TypeDescriptor.CreateEvent(events[i].ComponentType,
 events[i], 
                    new CategoryAttribute(events[i].EventType.FullName));
            
            events = new EventDescriptorCollection(newEvents);

            // Return event properties for the event descriptors.
            return eventPropertySvc.GetEventProperties(events);
        }        

        // Provides the name for the event property tab.
        public override string TabName
        {
            get
            {
                return "Events by Type";
            }
        }

        // Provides an image for the event property tab.
        public override System.Drawing.Bitmap Bitmap
        {
            get
            {
                Bitmap bmp = new Bitmap(DeserializeFromBase64Text(img));
                return bmp;
            }
        }

        // This method can be used to retrieve an Image from a block
 of 
        // Base64-encoded text.
        private Image DeserializeFromBase64Text(string
 text)
        {
            Image img = null;
            byte[] memBytes = Convert.FromBase64String(text);
            IFormatter formatter = new BinaryFormatter();
            MemoryStream stream = new MemoryStream(memBytes);
            img = (Image)formatter.Deserialize(stream);
            stream.Close();
            return img;
        }
    }
}

C++

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

using namespace System;
using namespace System::ComponentModel;
using namespace System::ComponentModel::Design;
using namespace System::Collections;
using namespace System::Drawing;
using namespace System::IO;
using namespace System::Reflection;
using namespace System::Runtime::Serialization;
using namespace System::Runtime::Serialization::Formatters::Binary;
using namespace System::Windows::Forms;
using namespace System::Windows::Forms::Design;

ref class TypeEventsTab;

// This component adds a TypeEventsTab to the Properties Window.

[PropertyTabAttribute(TypeEventsTab::typeid,PropertyTabScope::Document)]
public ref class TypeEventsTabComponent: public
 Component
{
public:
   TypeEventsTabComponent(){}

};


// This example events tab lists events by their delegate type.
[System::Security::Permissions::PermissionSetAttribute
      (System::Security::Permissions::SecurityAction::InheritanceDemand, Name="FullTrust")]
[System::Security::Permissions::PermissionSetAttribute
      (System::Security::Permissions::SecurityAction::Demand, Name="FullTrust")]
public ref class TypeEventsTab: public
 System::Windows::Forms::Design::EventsTab
{
private:

   // This string contains a Base-64 encoded and serialized example
 
   // property tab image.

   [BrowsableAttribute(true)]
   String^ img;
   IServiceProvider^ sp;

public:
   TypeEventsTab( IServiceProvider^ sp )
      : EventsTab( sp )
   {
      this->sp = sp;
      String^ s = "AAEAAAD/////AQAAAAAAAAAMAgAAAFRTeXN0ZW0uRHJhd2luZywgVmVyc2lvbj0xLjAuMzMwMC4w"
      "LCBDdWx0dXJlPW5ldXRyYWwsIFB1YmxpY0tleVRva2VuPWIwM2Y1ZjdmMTFkNTBhM2EFAQAAABVTeXN0ZW0uRHJhd2luZy5CaXRt"
      "YXABAAAABERhdGEHAgIAAAAJAwAAAA8DAAAAtgIAAAJCTbYCAAAAAAAANgAAACgAAAANAAAAEAAAAAEAGAAAAAAAAAAAAMQOAADED"
      "gAAAAAAAAAAAADO1tnO1tnO1tnO1tnO1tnO1tnO1tnO1tnO1tnO1tnO1tnO1tnO1tn/ztbZztbZHh4eHh4eztbZztbZztbZztbZztb"
      "ZztbZztbZztbZztbZ/87W2c7W2QDBAB4eHh4eHs7W2c7W2c7W2c7W2c7W2c7W2c7W2c7W2f/O1tnO1tnO1tkAwQAeHh4eHh7O1tnO1"
      "tnO1tnO1tnO1tnO1tnO1tn/ztbZztbZlJSU////AMEAHh4eHh4eztbZztbZztbZztbZztbZztbZ/87W2c7W2c7W2ZSUlP///wDBAB4"
      "eHh4eHs7W2c7W2c7W2c7W2c7W2f/O1tnO1tnO1tnO1tmUlJT///8AwQAeHh4eHh7O1tnO1tnO1tnO1tn/ztbZHh4eHh4eHh4eHh4eH"
      "h4e////AIAAHh4eHh4eztbZztbZztbZ/87W2ZSUlP///wDBAADBAADBAADBAADBAACAAB4eHh4eHs7W2c7W2f/O1tnO1tmUlJT///8"
      "AwQAAgAAeHh4eHh7O1tnO1tnO1tnO1tnO1tn/ztbZztbZztbZlJSU////AMEAAIAAHh4eHh4eztbZztbZztbZztbZ/87W2c7W2c7W2"
      "c7W2ZSUlP///wDBAACAAB4eHh4eHs7W2c7W2c7W2f/O1tnO1tnO1tnO1tnO1tmUlJT///8AwQAAgAAeHh4eHh7O1tnO1tn/ztbZztb"
      "ZztbZztbZztbZztbZlJSU////AMEAAIAAHh4eHh4eztbZ/87W2c7W2c7W2c7W2c7W2c7W2c7W2ZSUlP///wDBAACAAB4eHs7W2f/O1"
      "tnO1tnO1tnO1tnO1tnO1tnO1tnO1tnO1tnO1tnO1tnO1tnO1tn/Cw==";
      img = s;
   }

   // Returns the properties of the specified component extended with
 a 
   // CategoryAttribute reflecting the name of the type of the property.
   virtual System::ComponentModel::PropertyDescriptorCollection^ GetProperties( ITypeDescriptorContext^
 /*context*/, Object^ component, array<System::Attribute^>^attributes ) override
   {
      // Obtain an instance of the IEventBindingService.
      IEventBindingService^ eventPropertySvc = dynamic_cast<IEventBindingService^>(sp->GetService(
 IEventBindingService::typeid ));
      
      // Return if an IEventBindingService could not be obtained.
      if ( eventPropertySvc == nullptr )
            return gcnew PropertyDescriptorCollection( nullptr
 );

      // Obtain the events on the component.
      EventDescriptorCollection^ events = TypeDescriptor::GetEvents( component, attributes
 );

      // Create an array of the events, where each event is assigned
 
      // a category matching its type.
      array<EventDescriptor^>^newEvents = gcnew array<EventDescriptor^>(events->Count);
      for ( int i = 0; i < events->Count;
 i++ )
      {
         array<Attribute^>^temp = {gcnew CategoryAttribute( events[ i ]->EventType->FullName
 )};
         newEvents[ i ] = TypeDescriptor::CreateEvent( events[ i ]->ComponentType,
 events[ i ], temp );
      }
      events = gcnew EventDescriptorCollection( newEvents );

      // Return event properties for the event descriptors.
      return eventPropertySvc->GetEventProperties( events );
   }

   property String^ TabName 
   {
      // Provides the name for the event property tab.
      virtual String^ get() override
      {
         return "Events by Type";
      }
   }

   property System::Drawing::Bitmap^ Bitmap 
   {
      // Provides an image for the event property tab.
      virtual System::Drawing::Bitmap^ get() override
      {
         System::Drawing::Bitmap^ bmp = gcnew System::Drawing::Bitmap( DeserializeFromBase64Text(
 img ) );
         return bmp;
      }
   }

private:

   // This method can be used to retrieve an Image from a block of 
   // Base64-encoded text.
   Image^ DeserializeFromBase64Text( String^ text )
   {
      Image^ img = nullptr;
      array<Byte>^memBytes = Convert::FromBase64String( text );
      IFormatter^ formatter = gcnew BinaryFormatter;
      MemoryStream^ stream = gcnew MemoryStream( memBytes );
      img = dynamic_cast<Image^>(formatter->Deserialize( stream ));
      stream->Close();
      return img;
   }
};

J#

package EventsTabExample; 

import System.*;
import System.ComponentModel.*;
import System.ComponentModel.Design.*;
import System.Collections.*;
import System.Drawing.*;
import System.IO.*;
import System.Reflection.*;
import System.Runtime.Serialization.*;
import System.Runtime.Serialization.Formatters.Binary.*;
import System.Windows.Forms.*;
import System.Windows.Forms.Design.*;
   
// This component adds a TypeEventsTab to the Properties Window.
/** @attribute PropertyTabAttribute(TypeEventsTab.class, 
    PropertyTabScope.Document)
 */
public class TypeEventsTabComponent extends
 Component
{

    public TypeEventsTabComponent()
    {
    } //TypeEventsTabComponent
} //TypeEventsTabComponent
   
// This example events tab lists events by their delegate type.
/** @attribute System.Security.Permissions.PermissionSet(System.Security.
    Permissions.SecurityAction.Demand, Name = "FullTrust")
 */
public class TypeEventsTab extends System.Windows.Forms.Design.EventsTab
{
    /** @attribute BrowsableAttribute(true)
     */
    // This string contains a Base-64 encoded and serialized example
 
    // property tab image.
    private String img = "AAEAAAD/////AQAAAAAAAAAMAgAAAFRTeXN0ZW0uRHJhd2luZy"
        + "wgVmVyc2lvbj0xLjAuMzMwMC4wLCBDdWx0dXJlPW5ldXRyYWwsIFB1YmxpY0tleVR"
        + "va2VuPWIwM2Y1ZjdmMTFkNTBhM2EFAQAAABVTeXN0ZW0uRHJhd2luZy5CaXRtYXAB"
        + "AAAABERhdGEHAgIAAAAJAwAAAA8DAAAAtgIAAAJCTbYCAAAAAAAANgAAACgAAAANA"
        + "AAAEAAAAAEAGAAAAAAAAAAAAMQOAADEDgAAAAAAAAAAAADO1tnO1tnO1tnO1tnO1t"
        + "nO1tnO1tnO1tnO1tnO1tnO1tnO1tnO1tn/ztbZztbZHh4eHh4eztbZztbZztbZztb"
        + "ZztbZztbZztbZztbZztbZ/87W2c7W2QDBAB4eHh4eHs7W2c7W2c7W2c7W2c7W2c7W"
        + "2c7W2c7W2f/O1tnO1tnO1tkAwQAeHh4eHh7O1tnO1tnO1tnO1tnO1tnO1tnO1tn/z"
        + "tbZztbZlJSU////AMEAHh4eHh4eztbZztbZztbZztbZztbZztbZ/87W2c7W2c7W2Z"
        + "SUlP///wDBAB4eHh4eHs7W2c7W2c7W2c7W2c7W2f/O1tnO1tnO1tnO1tmUlJT///8"
        + "AwQAeHh4eHh7O1tnO1tnO1tnO1tn/ztbZHh4eHh4eHh4eHh4eHh4e////AIAAHh4e"
        + "Hh4eztbZztbZztbZ/87W2ZSUlP///wDBAADBAADBAADBAADBAACAAB4eHh4eHs7W2"
        + "c7W2f/O1tnO1tmUlJT///8AwQAAgAAeHh4eHh7O1tnO1tnO1tnO1tnO1tn/ztbZztb"
        + "ZztbZlJSU////AMEAAIAAHh4eHh4eztbZztbZztbZztbZ/87W2c7W2c7W2c7W2ZSUl"
        + "P///wDBAACAAB4eHh4eHs7W2c7W2c7W2f/O1tnO1tnO1tnO1tnO1tmUlJT///8AwQA"
        + "AgAAeHh4eHh7O1tnO1tn/ztbZztbZztbZztbZztbZztbZlJSU////AMEAAIAAHh4eH"
        + "h4eztbZ/87W2c7W2c7W2c7W2c7W2c7W2c7W2ZSUlP///wDBAACAAB4eHs7W2f/O1tn"
        + "O1tnO1tnO1tnO1tnO1tnO1tnO1tnO1tnO1tnO1tnO1tnO1tn/Cw==";

    private IServiceProvider sp;

    public TypeEventsTab(IServiceProvider sp)
    {
        super(sp);
        this.sp = sp;
    } //TypeEventsTab

    // Returns the properties of the specified component extended with
 a 
    // CategoryAttribute reflecting the name of the type of the property.
    public System.ComponentModel.PropertyDescriptorCollection
 GetProperties(
        ITypeDescriptorContext context, Object component, 
        System.Attribute attributes[])
    {
        // Obtain an instance of the IEventBindingService.
        IEventBindingService eventPropertySvc = (IEventBindingService)sp.
            GetService(IEventBindingService.class.ToType());

        // Return if an IEventBindingService could not be obtained.
        if (eventPropertySvc == null) {
            return new PropertyDescriptorCollection(null);
        }

        // Obtain the events on the component.
        EventDescriptorCollection events = TypeDescriptor.
            GetEvents(component, attributes);

        // Create an array of the events, where each event is assigned
 
        // a category matching its type.
        EventDescriptor newEvents[] = new EventDescriptor[events.get_Count()];

        for (int i = 0; i < events.get_Count();
 i++) {
            newEvents.set_Item(i, TypeDescriptor.CreateEvent(events.
                get_Item(i).get_ComponentType(), events.get_Item(i),
                new Attribute[] { new CategoryAttribute(events.get_Item(i).
                get_EventType().get_FullName()) }));
        }
        events = new EventDescriptorCollection(newEvents);

        // Return event properties for the event descriptors.
        return eventPropertySvc.GetEventProperties(events);
    } //GetProperties

    // Provides the name for the event property tab.
    /** @property 
     */
    public String get_TabName()
    {
        return "Events by Type";
    } //get_TabName

    // Provides an image for the event property tab.
    /** @property
     */
    public System.Drawing.Bitmap get_Bitmap()
    {
        Bitmap bmp = new Bitmap(DeserializeFromBase64Text(img));

        return bmp;
    } //get_Bitmap

    // This method can be used to retrieve an Image from a block of
 
    // Base64-encoded text.
    private Image DeserializeFromBase64Text(String text)
    {
         Image img = null;
         ubyte memBytes[] = Convert.FromBase64String(text);
         IFormatter formatter = new BinaryFormatter();
         MemoryStream stream =  new MemoryStream(memBytes);
         img =(Image)formatter.Deserialize(stream);
         stream.Close();
         return img;
    } //DeserializeFromBase64Text
} //TypeEventsTab

継承階層

System.Object
   System.Windows.Forms.Design.PropertyTab
    System.Windows.Forms.Design.EventsTab

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

Windows 98, Windows 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

開発プラットフォームの中には、.NET Framework によってサポートされていないバージョンがあります。サポートされているバージョンについては、「システム要件」を参照してください。

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
EventsTab メンバ
System.Windows.Forms.Design 名前空間