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