On Tue, 18 Aug 2009 17:18:25 +0100 Andreas wrote: > Okay I found a workaround: > Please try not to top-post. Replies to posts, even your own, should quote the relevant bits only and THEN respond to them. I've shuffled things below: > Andreas Sommer wrote: > > > > I have a function /putMessageBox/ which shows a message box dialog > > like this (it's Python but I think it's not specific to that language): > > > > ... > > dialog.run() > > dialog.hide() > > ... > > That function is fine if you want to execute the dialog as a "modal" dialog, i.e. the other windows block until it's been acknowledged. If you want the dialog non-modal (i.e. works in parallel with other windows) you should use a different approach. > > Calling the function normally from somewhere in the main thread works, > > but when I execute it with > > > > def helper(): > > putMessageBox(...) > > gobject.idle_add(helper) > > > > it deadlocks as soon as I press the OK button on the dialog. You appear to be showing the dialog whenever the GTK loop is idle. This seems a very unlikely requirement for a modal dialog. >> The > > dialog does not disappear, the buttons stays pressed and the complete > > application is stuck. Same with timeout_add, of course. That may not be a strictly accurate assessment. What happens, I suspect, is that the dialog is shown and handled, but when the user clicks "OK" and closes it, the main loop drops back to the idle state and immediately re-runs the dialog. Later you wrote: > Okay I found a workaround: > > def helper(): > *gtk.gdk.threads_enter()* > putMessageBox(...) > * gtk.gdk.threads_leave()* > gobject.idle_add(helper) > > But why do I have to do that? Note that I call the above from the main > thread, no multithreading involved. Please can somebody explain why this > is necessary? > There is some threading involved, of sorts. The dialog.run call creates a new GTK mainloop purely for that dialog. It's possible that the threads_enter is preventing the dialog's main loop from running the idle tasks that would otherwise re-run the dialog when you don't want it. I think we will need to see much more of the structure of your application to be able to help further. HTH Rob _______________________________________________ gtk-list mailing list gtk-list@xxxxxxxxx http://mail.gnome.org/mailman/listinfo/gtk-list
