Sounds like that is the problem. As indicated I have work around with using menu-bind, so nothing critical. On a related topic is there a way to "label" my custom keybindings. Right now "Show active keybinds" from the menu shows the line number in my keybindings file. <div class="gmail_quote">On Sat, Oct 27, 2012 at 9:56 PM, Robby Findler <<a href="mailto:robby@eecs.northwestern.edu" target="_blank">robby@eecs.northwestern.edu</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> Okay, it looks like on-subwindow-char is not being called properly anymore. Here's a small program that illustrates the problem. It prints out the frame, but I think it should print out the editor-canvas. This seems to be linux specific. #lang racket/gui (define f% (class frame% (define/override (on-subwindow-char receiver evt) (printf "receiver: ~s\n" receiver) #f) (super-new))) (define f (new f% [label ""] [width 400] [height 400])) (define t (new text%)) (define ec (new editor-canvas% [parent f] [editor t])) (send ec focus) (send f show #t) Robby </blockquote></div>