EventFragment.cs.in

   private vtkObjectEventRelay @event_name@Relay;

   /// <summary>
   /// The @event_name@ event is invoked when the sender's InvokeEvent method
   /// is called with vtkCommand.EventIds.@event_basename@Event
   /// as the eventId parameter.
   /// </summary>
   public event Kitware.VTK.vtkObject.vtkObjectEventHandler @event_name@
   {
      add
      {
         if (null == this.@event_name@Relay)
         {
            this.@event_name@Relay = new vtkObjectEventRelay(this,
               (uint) vtkCommand.EventIds.@event_basename@Event);
         }

         if (null != this.@event_name@Relay)
         {
            this.@event_name@Relay.AddHandler(value);
         }
      }

      remove
      {
         if (null != this.@event_name@Relay)
         {
            this.@event_name@Relay.RemoveHandler(value);

            if (!this.@event_name@Relay.HasHandlers())
            {
               this.@event_name@Relay = null;
            }
         }
      }
   }