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