I suppose your application is multithreaded. RFID reader and GTK main loop should be runned in same thread. Otherwise you should use Glib::Dispatcher to deliver events (signals) from thread that read RFID tag to GTK thread (that update graphics).
В Срд, 02/12/2015 в 14:52 -0700, Jason Calhoun пишет: > Hi, > > I'm developing an application using gtkmm-3.0, and running into a bug > with the UI I haven't been able to track down. I've never used GTK or > gtkmm before, and haven't done any real development on linux either. > > The application uses a Phidgets RFID reader to read an RFID tag, and > display some information on a simple UI. The problem is that the UI > seems to freeze at some point while handling events. Once the UI is > hung, I can close the window, at which point I get the error at the > console "GLib-CRITICAL **: Source ID XXX was not found when attempting > to remove it". This warning or error occurs only in cases when the UI > has hung. However, even with the UI apparently hung, the application > continues to run, it can still read tags and output to the console, for > instance. Also, I've noticed this problem only on the target platform, > which is a Raspberry Pi running the Ubuntu MATE distribution available > on raspberrypi.org. I haven't been able to duplicate it on my desktop > machine, which is running slightly older versions of the glibmm and > gtkmm libraries. > > I use the event handlers defined by the Phidgets library to emit sigc > signals so I can handle those events in the application's main window. > In the signal handlers, there are a few simple calls to update the UI, > such as using the set_text method to update the text in a label, and > display or clear an image. I use the built in timeout signal to display > a clock, and reset the display after a certain period of time. > > I'm not sure if the UI freeze is due to some error in my code, or due to > an error in the gtk/glib libraries somewhere. I would appreciate any > help anyone can offer. I can provide code samples and/or more details > as needed. > > Can anyone help? > > > Thanks, > Jason > > > > > > _______________________________________________ > gtkmm-list mailing list > [email protected] > https://mail.gnome.org/mailman/listinfo/gtkmm-list -- Regards, Andrew _______________________________________________ gtkmm-list mailing list [email protected] https://mail.gnome.org/mailman/listinfo/gtkmm-list
