>I've read further and you had the idea of using a dummy window for finding out, when the designer is closed.
>
>Well, as my solution uses the project hook, if the form or class is open in the designer, the QueryModifyFile is through, but I attach an Eventhandler, so when closing the class or form designer, the object is destroyed and if I bind to destroy the eventhandler could do something at that point.
>
>Bye, Olaf.

Actually, Naomi had the idea to use the designer within a form.

A project hook sounds doable, too, though I don't do all my class/form mods with the project open.