Adds a handler to be invoked when an action is undone.
[Visual Basic] Sub AddOnUndo( _ ByVal handler As ActionUnitEventHandler _ ) [C#] void AddOnUndo( ActionUnitEventHandler handler ); [C++] void AddOnUndo( ActionUnitEventHandler* handler ) = 0; [JScript] function AddOnUndo( handler : ActionUnitEventHandler );
IUndoService Interface | IUndoService Members | System.ComponentModel.Design Namespace