# IOleUndoManager::Enable

Enables or disables the undo manager.

HRESULT Enable(

BOOL fEnable | //Indicates whether to enable or disable the undo manager
); |

Parameters

fEnable
  [in] Indicates whether to enable or disable the undo manager. If TRUE, the undo manager should be enabled. If FALSE, the undo manager should be disabled.

Return Values

S_OK
  The undo manager was successfully enabled or disabled.
E_UNEXPECTED
  There is an open undo unit on the stack or the undo manager is currently performing an undo or a redo.

Remarks

The undo manager should clear both stacks when making the transition from enabled to disabled.

If the undo manager is disabled, each method in IOleUndoManager must behave as specified. See each method for details.

See Also

IOleUndoManager