Havoc's reply is probably the right way to go, but couldn't you just wrap your while(gtk_events_pending()) in a while (1) loop? > From: Paul Barton-Davis [mailto:[EMAIL PROTECTED]] > i wanted to emulate XForm's way of handling signals, in which, without > using a pipe or other heavyweight mechanism, i could notify a GTK UI > that a (POSIX) signal had been received. this is hard to do because > you can't use a signal handler - it runs asynchronously with respect > to GTK, and we can't use GTK_THREAD_ENTER/GTK_THREAD_LEAVE because > that may take too long to complete. > > at the time, Miguel agreed that XForm's way of doing this was good, > but pointed out that it wasn't part of the current GTK release, and > unlikely to be part of a future release. so, Miguel wrote: > > >Actually, that makes sense. You just need to have your own gtk_main: > > > >music_main () > >{ > > while (gtk_events_pending ()){ > > gtk_main_iteration (); > > if (alarm_handler_flag){ > > alarm_handler_flag = 0; > > do_alarm_thingie (); > > } > > } > >} > > finally, as i get around to porting the particular program (which > makes heavy use of SIGALRM, every 20ms or so), i decided to try this > out. > > alas, it doesn't work. in fact, the loop above isn't even what > gtk_main() does. what this will do is process all X traffic necessary > to flush the queue of pending stuff (created by prior calls to GTK > functions), and then will exit the loop because gtk_events_pending() > will return FALSE. this is OK when you're doing this as a recursive > invocation of "gtk_main()", but its certainly not the equivalent of a > top level gtk_main(). > > so, i'm looking for some way to say: "every time gtk_main_iteration() > is done, please check this flag, do this if its set, and then unset > it". as far as i can tell, the operation of gtk_main() fundamentally > comes down to: > > if (g_main_is_running (main_loops->data)) > { > GDK_THREADS_LEAVE (); > g_main_run (loop); > GDK_THREADS_ENTER (); > gdk_flush (); > } > > in turn, g_main_run () mostly calls g_main_iterate() telling it to > both block and dispatch: > > loop->is_running = TRUE; > while (loop->is_running) > g_main_iterate (TRUE, TRUE); > > i could use: > while (gtk_main_iteration()); > but i have no idea how to know when to leave the loop. > > in short, i can see no way to actually accomplish the effect i want > without writing my own version of gtk_main(), which is OK, but clearly > not very optimal. > > any ideas ? > > --p -- To unsubscribe: mail -s unsubscribe [EMAIL PROTECTED] < /dev/null
