CanUndo Property

public virtual bool CanUndo {get;}

 get_CanUndo(); 

Property Value

If this property value is true, you can call Undo to undo the previous operation performed in this AnnAutomation. You can use this property to update your user interface; for example, to enable/disable an Undo menu item.

Use the UndoCapacity property to get or set the number of user actions that can be reversed using the Undo method, or reapplied using the Redo method. The default for the UndoCapacity property is 10 actions.

For information on undoing or redoing automation operations, refer to Undoing Annotation Automation Operations.

Please note: the Undo operation does not work for the Realize operation that has been performed with the Realize method to realize the an image.

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference

AnnAutomation Class
AnnAutomation Members