<div class="gmail_extra"> <div class="gmail_quote">On Tue, Nov 27, 2012 at 5:43 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">Is the callback than handles the c-f1 keystroke running in gui-eventspace or in some other eventspace? </blockquote><div> It's in the gui-eventspace (just checked with a printf and a comparison with `(eq? (current-eventspace) gui-eventspace)'), and so is the button callback. </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> Robby <div class="HOEnZb"><div class="h5"> On Tue, Nov 27, 2012 at 10:25 AM, Laurent <<a href="mailto:laurent.orseau@gmail.com">laurent.orseau@gmail.com</a>> wrote: > > > On Tue, Nov 27, 2012 at 3:58 PM, Kieron Hardy <<a href="mailto:kieron.hardy@gmail.com">kieron.hardy@gmail.com</a>> > wrote: >> >> Laurent, do you have a bit of code that demonstrates your issue? > > > Well, it's not easy to show a minimal example, as it (seems to) depends on > an X event loop processing while grabbing the root window. > > But I have something like that: > [...] > ; create a new event space and use it for all graphics > (define gui-eventspace (make-eventspace)) > (current-eventspace gui-eventspace) > [...] > > (define menu2 (new popup-menu% [...]) > (define f (new frame% [label "Frame"])) > (define cb (new button% [parent f] [label "Menu"] > [callback (λ(cb ev)(send f popup-menu menu2 100 150))])) > > ; keybindings to run commands > (add-bindings global-keymap > "C-F1" (thunk* (send f popup-menu menu2 100 100)) > "C-F2" (thunk* (send f show #t)) ; to show the frame after the event loop > has started > ) > > [...] > > (run-event-loop) > > > When the program starts, I press Ctrl-F2 to show the frame, and then I can > press the button to show the popup, several times in a row, and the popup > menu does work correctly. > But if I press Ctrl-F1 to show the popup menu by attaching it directly to > the frame instead of going through the callback, not only does it not show > up, but after that pressing the button does not work anymore (actually, I > can press the button and it changes its state, so it's not frozen, but the > popup menu just does not appear). > > I've tried to surround the call inside the first thunk* with a `thread' and > also with a `(parameterize ([current-eventspace (make-eventspace)])' or with > the gui-eventspace just in case, but without success. > > Laurent > > >> >> >> >> On Nov 27, 2012, at 4:09, Laurent <<a href="mailto:laurent.orseau@gmail.com">laurent.orseau@gmail.com</a>> wrote: >> >> Update: >> Independently of the server and the keybindings: >> If I create a frame with a button which callback pops up a menu, it works. >> If I create a frame and call popup-menu on it directly, it fails (the menu >> does not appear, and the button above does not show its own menu anymore >> either, which may mean something about eventspaces being frozen? Although I >> can still click on another button that hides the frame) >> >> Any idea? I'm kind of stuck in the eventspace... >> >> Laurent >> >> >> On Mon, Nov 26, 2012 at 4:55 PM, Laurent <<a href="mailto:laurent.orseau@gmail.com">laurent.orseau@gmail.com</a>> wrote: >>> >>> There is a remaining problem: I can show frames and buttons alright, and >>> press them, but popup-menus seem to resist (although the frame I call >>> show-popup-menu on does show up). >>> >>> What's strange is that they work when called from the console (in a >>> different thread, in a different namespace with eval, but with >>> namespace-anchor), but not via a keybinding (in the main thread, and in the >>> main namespace), and I could not yet reproduce this behavior in a simpler >>> setting than in the server thread... >>> >>> Is there something special about popup-menus? >>> >>> Laurent >>> >>> >>> >>> On Sun, Nov 25, 2012 at 6:30 PM, Laurent <<a href="mailto:laurent.orseau@gmail.com">laurent.orseau@gmail.com</a>> >>> wrote: >>>> >>>> It works! Thank you very much! >>> >>> >> >> ____________________ >> Racket Users list: >> <a href="http://lists.racket-lang.org/users" target="_blank">http://lists.racket-lang.org/users</a> > > > > ____________________ > Racket Users list: > <a href="http://lists.racket-lang.org/users" target="_blank">http://lists.racket-lang.org/users</a> > </div></div></blockquote></div> </div>