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