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