Applies to
Declaration
procedure Undo;
procedure Redo;
Description
The Undo method undoes the last operation. Property CanUndo may be used to determine if this method will have any effect. Similarly, Redo redoes the last undo. Property CanRedo may be used to determine if any redo information is present in the control at one time.
TPlusMemo supports multi level undo-redo. This means that all the previous text edition operations can be undone. Also, all the previous undo operations since the last edition can be redone.
Whenever the user presses Ctrl-Z when a TPlusMemo has focus, Undo is called internally. Upon pressing Ctrl-Shift-Z, Redo is called internally.
See also
CanUndo, CanRedo properties
ClearUndo method
UndoMaxLevels, UndoMaxSpace properties