TdxRichEditControlBase.CanUndo Method

Returns a value indicating whether the Undo command is currently available to end-users.

Declaration

delphi

function CanUndo: Boolean;

Type
Boolean

If this function returns True , an end-user can execute the Undo command; otherwise – False.

The Undo command is available only if all following conditions are met:

The action history functionality is enabled;
At least a single action is performed within the current document (note that each execution of the Undo command moves an action from the undo to redo action list).