ToolboxComponentsCreatingEventHandler Delegado

Definición

Espacio de nombres:

System.Drawing.Design

Ensamblado:

System.Windows.Forms.Design.dll

Representa el método que controla el evento ComponentsCreating.

public delegate void ToolboxComponentsCreatingEventHandler(System::Object ^ sender, ToolboxComponentsCreatingEventArgs ^ e);

public delegate void ToolboxComponentsCreatingEventHandler(object sender, ToolboxComponentsCreatingEventArgs e);

type ToolboxComponentsCreatingEventHandler = delegate of obj * ToolboxComponentsCreatingEventArgs -> unit

Public Delegate Sub ToolboxComponentsCreatingEventHandler(sender As Object, e As ToolboxComponentsCreatingEventArgs)

Parámetros

sender

Object

Origen del evento.

e

ToolboxComponentsCreatingEventArgs

ToolboxComponentsCreatingEventArgs que proporciona datos para el evento.

Ejemplos

En el código de ejemplo siguiente se proporciona un método que asocia un controlador de eventos para el ComponentsCreating evento de , ToolboxItemy un ToolboxComponentsCreatingEventHandler método de controlador de eventos que escribe el nombre del tipo del componente que va a recibir el nuevo componente o componente al Console cuando un ComponentsCreating evento genera el controlador de eventos.

public:
   [PermissionSetAttribute(SecurityAction::Demand, Name="FullTrust")]
   void LinkToolboxComponentsCreatingEvent( ToolboxItem^ item )
   {
      item->ComponentsCreating +=
         gcnew ToolboxComponentsCreatingEventHandler( this, &Form1::OnComponentsCreating );
   }

private:
   void OnComponentsCreating( Object^ sender, ToolboxComponentsCreatingEventArgs^ e )
   {
      // Displays ComponentsCreating event information on the Console.
      Console::WriteLine( "Name of the class of the root component of " +
         "the designer host receiving new components: " +
         e->DesignerHost->RootComponentClassName );
   }

public void LinkToolboxComponentsCreatingEvent(ToolboxItem item)
{
    item.ComponentsCreating += new ToolboxComponentsCreatingEventHandler(this.OnComponentsCreating);
}

private void OnComponentsCreating(object sender, ToolboxComponentsCreatingEventArgs e)
{
    // Displays ComponentsCreating event information on the Console.
    Console.WriteLine("Name of the class of the root component of " +
    "the designer host receiving new components: " +
    e.DesignerHost.RootComponentClassName);
}

Public Sub LinkToolboxComponentsCreatingEvent(ByVal item As ToolboxItem)
    AddHandler item.ComponentsCreating, AddressOf Me.OnComponentsCreating
End Sub

Private Sub OnComponentsCreating(ByVal sender As Object, ByVal e As ToolboxComponentsCreatingEventArgs)
    ' Displays ComponentsCreating event information on the Console.
    Console.WriteLine(("Name of the class of the root component of the designer host receiving new components: " + e.DesignerHost.RootComponentClassName))
End Sub

Comentarios

Cuando se crea un delegado ToolboxComponentsCreatingEventHandler, se identifica el método que controlará el evento. Para asociar el evento al controlador, se debe agregar una instancia del delegado al evento. Siempre que se produce el evento, se llama a su controlador, a menos que se quite el delegado. Para obtener más información sobre los delegados del controlador de eventos, consulte Control y generación de eventos.

Métodos de extensión

Consulte también

• ToolboxComponentsCreatingEventArgs
• ComponentsCreating