This document covers the following topics:
ActiveX Controls, List Box Control, List View Control, Tree View Control.
If not suppressed, this event is received by an ActiveX or list box control that has the keyboard focus when the user triggers a tool bar item, menu item or signal of type "Undo". The event code should respond to this event by undoing the effect of the last action applied to the control, if possible.
Note:
Natural cannot provide any default handling for this event because it
is ambiguous as to what action should be taken.