I´ve a form with one texfield control
i create a property form called exit_form = .f.

in the thisform.txfield.valid
if thisform.exit_form
thisform.release
endif

if this.value >= date() or empty(this.value)
return .f.
endif

What i want to do is if i click on the form close button i want to exit the form, but the valid event don´t let me

where do i have to put thisform.exit_form = .t.
thisform.queryunload ...???

thank you ALL

João