Contents

NSUndoManagerDidOpenUndoGroup

Posted whenever an undo manager opens an undo group.

Declaration

static let NSUndoManagerDidOpenUndoGroup: NSNotification.Name

Discussion

This notification originates in the implementation of the beginUndoGrouping() method.

The notification object is the NSUndoManager object. This notification doesn’t contain a userInfo dictionary.

The system posts this notification on the actor, thread, or dispatch queue that calls beginUndoGrouping().

See Also

Working with notifications