As Gregory mentions ReleaseType is a property that will teel how the form was close and if the user uses the "X: in the corner to release the form, that will trigger the QueryUnload of the form where you could put your code.

>Can any one tell me how to track a user when he/she click on a Form's close box at top right hand corner (i.e.: the Cross Image)?
>I wish to enable this click function but I wish to track it because I need to do some logout steps in my application.
>Thanks in advance.
>Samuel