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