When using a form in VFP9, I want to capture the "mouse click" on the red "X" close button and do some testing before I allow the user to close the form.

If certain things have not been done I want to warn the user that they are exiting (closing) the form without finishing these tasks and give them a "Yes / Cancel" choice. If they click on "Yes" the form would close but if they click on "Cancel" the focus would return to the form and it would not be closed.

Is this doable?

Thanks,
Robert Wright