Leadtools.Windows.Annotations Namespace > AnnProtractorObject Class : OnSecondPointChanged Method |
protected virtual void OnSecondPointChanged( RoutedPropertyChangedEventArgs<Point> e )
'Declaration Protected Overridable Sub OnSecondPointChanged( _ ByVal e As RoutedPropertyChangedEventArgs(Of Point) _ )
'Usage Dim instance As AnnProtractorObject Dim e As RoutedPropertyChangedEventArgs(Of Point) instance.OnSecondPointChanged(e)
protected: virtual void OnSecondPointChanged( RoutedPropertyChangedEventArgs<Point>^ e )
Raising an event invokes the event handler through a delegate.
The OnSecondPointChanged 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 OnSecondPointChanged in a derived class, be sure to call the base class's OnSecondPointChanged method so that registered delegates receive the event.