I was about to reply with the same answer as Matthias, but with define/override instead of define/augment, but I kept getting an error. Does it say anywhere in the docs whether a method is declared using pubment or public? I couldnt find it.
On Wed, May 22, 2013 at 7:06 PM, Matthias Felleisen <matth...@ccs.neu.edu> wrote: > > Here we go: > > #lang racket/gui > > (define my-frame% > (class frame% > (super-new) > (define/augment (on-close) > (displayln "closing now")))) > > (define frame > (new my-frame% [label "on closing"][width 300][height 200])) > > (send frame show #t) > > > > On May 22, 2013, at 6:55 PM, Zelah Hutchinson wrote: > >> From the documentation I gather that I need to augment the on-close method. >> I do not understand how to do this. Can someone show me a tiny example of >> how to perform an operation when a window is closed? Thank you. >> >> ____________________________________________________________ >> FREE 3D MARINE AQUARIUM SCREENSAVER - Watch dolphins, sharks & orcas on your >> desktop! >> Check it out at http://www.inbox.com/marineaquarium >> >> >> >> ____________________ >> Racket Users list: >> http://lists.racket-lang.org/users > > > ____________________ > Racket Users list: > http://lists.racket-lang.org/users ____________________ Racket Users list: http://lists.racket-lang.org/users
