Occurs when the TextView is about to be measured and will regenerate its visual lines. This event may be used to mark visual lines as invalid that would otherwise be reused.

public event EventHandler<VisualLineConstructionStartEventArgs> VisualLineConstructionStarting

Public Event VisualLineConstructionStarting As EventHandler(Of VisualLineConstructionStartEventArgs)

public:
 event EventHandler<VisualLineConstructionStartEventArgs^>^ VisualLineConstructionStarting {
	void add (EventHandler<VisualLineConstructionStartEventArgs^>^ value);
	void remove (EventHandler<VisualLineConstructionStartEventArgs^>^ value);
}