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