When an editor is being opened, you can check to see if another of your
editors is already open. If it is, you can programatically close it first
(allowing the user to save first, obviously).
"Janek" <email@example.com> wrote in message
> I need to limit number of my gef application diagrams, that user can open.
> I'd like to have only one diagram opened. Is it possible? If so how can I
> do it?
> Thx for replies.