Products | Support | Email a link to this topic. | Send comments on this topic. | Back to Introduction - All Topics | Help Version 19.0.5.10
|
Leadtools.Windows.Annotations Namespace > AnnObject Class : OnIsVisibleChanged Method |
protected virtual void OnIsVisibleChanged( RoutedPropertyChangedEventArgs<bool> e )
'Declaration Protected Overridable Sub OnIsVisibleChanged( _ ByVal e As RoutedPropertyChangedEventArgs(Of Boolean) _ )
'Usage Dim instance As AnnObject Dim e As RoutedPropertyChangedEventArgs(Of Boolean) instance.OnIsVisibleChanged(e)
protected: virtual void OnIsVisibleChanged( RoutedPropertyChangedEventArgs<bool>^ e )
Raising an event invokes the event handler through a delegate.
The OnIsVisibleChanged 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 OnIsVisibleChanged in a derived class, be sure to call the base class's OnIsVisibleChanged method so that registered delegates receive the event.