Leadtools.Windows.Annotations Namespace > AnnLineObject Class : OnStartChanged Method |
protected virtual void OnStartChanged( RoutedPropertyChangedEventArgs<Point> e )
'Declaration Protected Overridable Sub OnStartChanged( _ ByVal e As RoutedPropertyChangedEventArgs(Of Point) _ )
'Usage Dim instance As AnnLineObject Dim e As RoutedPropertyChangedEventArgs(Of Point) instance.OnStartChanged(e)
protected: virtual void OnStartChanged( RoutedPropertyChangedEventArgs<Point>^ e )
Raising an event invokes the event handler through a delegate.
The OnStartChanged method also allows derived classes to handle the event without attaching a delegate. This is the preferred technique for handling the event in a derived class.
Notes to Inheritors: When overriding OnStartChanged in a derived class, be sure to call the base class's OnStartChanged method so that registered delegates receive the event.