Ah ok I see now. I didn't look hard enough. I saw the "frame%" so I was clicking around here: http://docs.racket-lang.org/tools/drracket_unit.html?q=on-close#%28meth._%28%28%28lib._drracket%2Ftool-lib..rkt%29._drracket~3aunit~3aframe~25%29._on-close%29%29
On Wed, May 22, 2013 at 7:59 PM, Matthias Felleisen <matth...@ccs.neu.edu> wrote: > > From the docs: > > " > method > (send a-top-level-window on-close) → void? > > Refine this method with augment. > ... > " > > > > On May 22, 2013, at 7:14 PM, Stephen Chang wrote: > >> 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
