Robby,
Sorry for the long delay in replying.
Never mind---I have been distracted by other things recently, and now I am back to work on this, so your reply is in fact just in time, thanks :)
You should be able to use handler:insert-format-handler to open your frame when a file with your extension is opened via the open dialog.
Good, insert-format-handler will suffice my needs I think. Dumb question follows: what is the best place to call insert-format-handler from? To be more specific about my goals: I have a Racket installation, and I would like to have this format handler registered by the moment a user starts DrRacket and opens some file in it. I tried and hijacked /opt/racket/share/pkgs/drracket/drracket/private/main.rkt to insert my (handler:insert-format-handler) to it, but this surely does not seem to be a good solution. My spreadsheet-editing module is currently in a collection that is "raco link"-ed to the Racket installation. Is there a way to call (handler:insert-format-handler) from a collection module before the collection is (require)-d? Or can I form a package from my collection and use some package mechanism for that? Also, a related question: what would you recommend for adding a certain file type to the DrRacket's file->open dialog, where currently are "Racket Sources" and "Any"? Best regards, Dmitry ____________________ Racket Users list: http://lists.racket-lang.org/users
