The main way to avoid a default exit on Mac OS is to create a `menu-bar%` with the parent 'root. That menu bar becomes active when no windows (i.e., frames) are open.
Another way is to not rely on the implicit `(yield (current-eventspace))` of a GUI executable, and instead use something like `(yield never-evt)` so that the application doesn't exit until `exit` is used. At Fri, 27 Apr 2018 12:39:21 -0500, Philip McGrath wrote: > I know that, on Mac at least, it's expected behavior for the application to > exit when all windows are hidden with `(send frame show #f)`. I personally > think this is a great default, because it prevents the annoying behavior of > other applications that hang around open even when you mean to have closed > them unless you explicitly "quit". I believe there is a way to stop this > from happening when it makes sense for the application to be able to exist > with no windows (I think DrRacket does this, for example), but I've never > tried. > > I wonder, though, about what you say about using a tcp server in another > thread: do you mean a Racket thread, a Racket place, or a machine thread > through some other mechanism? Racket's threads are "green" — they all run > in the same machine thread, giving you concurrency but not parallelism — > so, if that's what you mean, you could communicate over a channel or other > synchronization construct rather than converting messages to TCP-able > bytes. Using the Racket constructs to communicate between Racket threads > would certainly be more convenient than going through TCP, and probably > more efficient as well. > > -Philip > > On Fri, Apr 27, 2018 at 12:21 PM, Tony Fischetti <[email protected]> > wrote: > > > > > Hi all, > > > > I've been stuck on this for a while. > > Short version: When I hide a GUI window with `(send frame show #f)` the > > application (on a mac, at least) *exits* when I'd like it to just hide the > > application and leave it still running. > > > > More information: > > I'm developing a small (personal) application launcher on macOS to help me > > learn Racket. Since I'd like the input window to come up lightning quick, I > > currently have the application spin up a tcp server in another thread. It > > responds to TCP events by hiding and showing the input window. Everything > > works, except that when the main window is hidden, the application closes > > and the server with it. > > > > Any ideas would be greatly appreciated! Thanks!! > > > > Tony > > > > -- > > You received this message because you are subscribed to the Google Groups > > "Racket Users" group. > > To unsubscribe from this group and stop receiving emails from it, send an > > email to [email protected]. > > For more options, visit https://groups.google.com/d/optout. > > > > -- > You received this message because you are subscribed to the Google Groups > "Racket Users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "Racket Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
