As David says, QueryUnload is called by the 'X' by the ControlBox. You should consider putting all of your form validation (asking if user wants to save uncommitted changes, etc.) in the QueryUnload and calling this from your Exit button with

if thisform.queryunload()
   thisform.release()
endif

>I've been closing forms in VFP5/6 by calling the form's .Release() method. In there I call the default (DODEFAULT) then do any other cleanup that may be required. I was wondering if the .Release() is really the most efficient way to go? Does this, indeed, take care of all the tables, datasessions, etc.? Should I call the .QueryUnLoad()? It doesn't seem to make much difference if I do or not...
>
>Thanks
>
>RicU
>RicU@att.net