Application:
Multiple forms run within a top level form. Each form is invoked by a menu which runs within the top level form. Config.fpw has application.visible = .F.

Question:
How can I insure that only one instance of each form can be invoked. I do want the user to be able to be using a second form at the same time.

Alternatives thought about:
Grey out the menu selection after it is selected, reactivate after the form is closed.

Thanks.