On Wed, 2015-12-02 at 14:52 -0700, Jason Calhoun wrote:
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 gtkmm-list gnome org https://mail.gnome.org/mailman/listinfo/gtkmm-list
Not sure, but you might want to use gdb to see where you code is stuck. Cheers -ritz
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