ListView - onEdited

Hi all, I wonder how to track the cancelation of an edit action in a
TreeView. There is an event fired on finish editing with the <enter>
key but I need to detect the cancelation of editing too.
Does anyone know how to do this?
TIA
- Ulli -
===
"On no account allow a Vogon to read poetry at you!"
Ulli Conrad
http://www.gwdg.de/~uconrad1
Public PGP-Key at http://www.gwdg.de/~uconrad1/upgpkey.asc