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。
この型のすべてのメンバの一覧については、EventsTab メンバ を参照してください。
System.Object
System.Windows.Forms.Design.PropertyTab
System.Windows.Forms.Design.EventsTab
Public Class EventsTab
Inherits PropertyTab
[C#]
public class EventsTab : PropertyTab
[C++]
public __gc class EventsTab : public PropertyTab
[JScript]
public class EventsTab extends PropertyTab
スレッドセーフ
この型の public static (Visual Basicでは Shared) のすべてのメンバは、マルチスレッド操作で安全に使用できます。インスタンスのメンバの場合は、スレッドセーフであるとは限りません。
使用例
[C#, C++] 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。
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.
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 <mscorlib.dll>
#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;
public __gc class TypeEventsTab;
// This component adds a TypeEventsTab to the Properties Window.
[PropertyTabAttribute(__typeof(TypeEventsTab), PropertyTabScope::Document)]
public __gc class TypeEventsTabComponent : public Component
{
public:
TypeEventsTabComponent()
{
}
};
// This example events tab lists events by their delegate type.
public __gc class TypeEventsTab : public System::Windows::Forms::Design::EventsTab
{
private:
[BrowsableAttribute(true)]
// This string contains a Base-64 encoded and serialized example
// property tab image.
String* img;
IServiceProvider* sp;
public:
TypeEventsTab(IServiceProvider* sp) : EventsTab(sp)
{
this->sp = sp;
String* s = S"AAEAAAD/////AQAAAAAAAAAMAgAAAFRTeXN0ZW0uRHJhd2luZywgVmVyc2lvbj0xLjAuMzMwMC4w"
S"LCBDdWx0dXJlPW5ldXRyYWwsIFB1YmxpY0tleVRva2VuPWIwM2Y1ZjdmMTFkNTBhM2EFAQAAABVTeXN0ZW0uRHJhd2luZy5CaXRt"
S"YXABAAAABERhdGEHAgIAAAAJAwAAAA8DAAAAtgIAAAJCTbYCAAAAAAAANgAAACgAAAANAAAAEAAAAAEAGAAAAAAAAAAAAMQOAADED"
S"gAAAAAAAAAAAADO1tnO1tnO1tnO1tnO1tnO1tnO1tnO1tnO1tnO1tnO1tnO1tnO1tn/ztbZztbZHh4eHh4eztbZztbZztbZztbZztb"
S"ZztbZztbZztbZztbZ/87W2c7W2QDBAB4eHh4eHs7W2c7W2c7W2c7W2c7W2c7W2c7W2c7W2f/O1tnO1tnO1tkAwQAeHh4eHh7O1tnO1"
S"tnO1tnO1tnO1tnO1tnO1tn/ztbZztbZlJSU////AMEAHh4eHh4eztbZztbZztbZztbZztbZztbZ/87W2c7W2c7W2ZSUlP///wDBAB4"
S"eHh4eHs7W2c7W2c7W2c7W2c7W2f/O1tnO1tnO1tnO1tmUlJT///8AwQAeHh4eHh7O1tnO1tnO1tnO1tn/ztbZHh4eHh4eHh4eHh4eH"
S"h4e////AIAAHh4eHh4eztbZztbZztbZ/87W2ZSUlP///wDBAADBAADBAADBAADBAACAAB4eHh4eHs7W2c7W2f/O1tnO1tmUlJT///8"
S"AwQAAgAAeHh4eHh7O1tnO1tnO1tnO1tnO1tn/ztbZztbZztbZlJSU////AMEAAIAAHh4eHh4eztbZztbZztbZztbZ/87W2c7W2c7W2"
S"c7W2ZSUlP///wDBAACAAB4eHh4eHs7W2c7W2c7W2f/O1tnO1tnO1tnO1tnO1tmUlJT///8AwQAAgAAeHh4eHh7O1tnO1tn/ztbZztb"
S"ZztbZztbZztbZztbZlJSU////AMEAAIAAHh4eHh4eztbZ/87W2c7W2c7W2c7W2c7W2c7W2c7W2ZSUlP///wDBAACAAB4eHs7W2f/O1"
S"tnO1tnO1tnO1tnO1tnO1tnO1tnO1tnO1tnO1tnO1tnO1tnO1tn/Cw==";
img = s;
}
// Returns the properties of the specified component extended with a
// CategoryAttribute reflecting the name of the type of the property.
System::ComponentModel::PropertyDescriptorCollection*
GetProperties(ITypeDescriptorContext* /*context*/, Object* component,
System::Attribute* attributes[])
{
// Obtain an instance of the IEventBindingService.
IEventBindingService* eventPropertySvc = dynamic_cast<IEventBindingService*>(sp->GetService(__typeof(IEventBindingService)));
// Return if an IEventBindingService could not be obtained.
if (eventPropertySvc == 0)
return new PropertyDescriptorCollection(0);
// 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++)
{
Attribute* temp[] = {new CategoryAttribute(events->Item[i]->EventType->FullName)};
newEvents->Item[i] = TypeDescriptor::CreateEvent(events->Item[i]->ComponentType, events->Item[i], temp);
}
events = new EventDescriptorCollection(newEvents);
// Return event properties for the event descriptors.
return eventPropertySvc->GetEventProperties(events);
}
// Provides the name for the event property tab.
__property String* get_TabName()
{
return S"Events by Type";
}
// Provides an image for the event property tab.
__property System::Drawing::Bitmap* get_Bitmap()
{
System::Drawing::Bitmap* bmp = new System::Drawing::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 = 0;
Byte memBytes[] = Convert::FromBase64String(text);
IFormatter* formatter = new BinaryFormatter();
MemoryStream* stream = new MemoryStream(memBytes);
img = dynamic_cast<Image*>(formatter->Deserialize(stream));
stream->Close();
return img;
}
};
[Visual Basic, JScript] Visual Basic および JScript のサンプルはありません。C# および C++ のサンプルを表示するには、このページの左上隅にある言語のフィルタ ボタン .gif)
をクリックします。
必要条件
名前空間: System.Windows.Forms.Design
プラットフォーム: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 ファミリ
アセンブリ: System.Windows.Forms (System.Windows.Forms.dll 内)