Meaning of GLib-GIO-CRITICAL assertion error

Question

I successfully compiled the following program simple.cc:

#include <gtkmm.h>

int main (int argc, char *argv[])
{
  Glib::RefPtr<Gtk::Application> app = 
    Gtk::Application::create(argc, argv,
      "org.gtkmm.examples.base");

  Gtk::ApplicationWindow window;

  return app->run(window);
}

using the following command:

g++ simple.cc -o simple `pkg-config gtkmm-3.0 --cflags --libs`

Which gave me the executable simple, but when I tried to run it, I got the following error:

(simple:2964): GLib-GIO-CRITICAL **: g_application_list_actions: assertion `application->priv->is_registered' failed
Segmentation fault (core dumped)

As far as I can tell, I have the latest and greatest GLib packages. I'm running Ubuntu 12.04 LTS.

Answer 1

I had the same problem as I have just started on the same tutorial. Replace:

    Gtk::ApplicationWindow window;

with

    GTK::Window window;

If you read the description of the code in the tutorial the latter is actually the code that is discussed. Making this change made the program work for me.