Simple hello world gtkmm app fail.

[sajimon]

Hello, i have this gtkmm application example from gnome development documentation

i put it all in one file, here is a code
http://dpaste.com/693447/

when i run application i got plenty of error massages



(process:28961): GLib-GObject-CRITICAL **: /build/buildd/glib2.0-2.30.0/./gobject/gtype.c:2708: You forgot to call g_type_init()

(process:28961): GLib-CRITICAL **: g_once_init_leave: assertion `initialization_value != 0' failed

(process:28961): GLib-GObject-CRITICAL **: /build/buildd/glib2.0-2.30.0/./gobject/gtype.c:2708: You forgot to call g_type_init()

(process:28961): GLib-GObject-WARNING **: cannot add class private field to invalid type '<invalid>'

(process:28961): GLib-GObject-CRITICAL **: /build/buildd/glib2.0-2.30.0/./gobject/gtype.c:2708: You forgot to call g_type_init()

(process:28961): GLib-GObject-CRITICAL **: g_type_add_interface_static: assertion `G_TYPE_IS_INSTANTIATABLE (instance_type)' failed

(process:28961): GLib-GObject-CRITICAL **: /build/buildd/glib2.0-2.30.0/./gobject/gtype.c:2708: You forgot to call g_type_init()

(process:28961): GLib-GObject-CRITICAL **: g_type_interface_add_prerequisite: assertion `G_TYPE_IS_INTERFACE (interface_type)' failed

(process:28961): GLib-CRITICAL **: g_once_init_leave: assertion `initialization_value != 0' failed

(process:28961): GLib-GObject-CRITICAL **: g_type_add_interface_static: assertion `G_TYPE_IS_INSTANTIATABLE (instance_type)' failed

(process:28961): GLib-GObject-CRITICAL **: /build/buildd/glib2.0-2.30.0/./gobject/gtype.c:2708: You forgot to call g_type_init()

i looks like Gtk::Main kit(); wasn't called or something.
I'm using gtkmm-3

[gmargo]

According to this tutorial: http://developer.gnome.org/gtkmm-tutorial/3.0/sec-helloworld.html.en
you are calling GTK:: Main kit() and Gtk::Main::run() incorrectly.

Try this for your main() routine:


int main(int argc, char** argv)
{
Gtk::Main kit(argc, argv);

HelloWorld hw;

Gtk::Main::run(hw);

return 0;
}
BTW, you could have put your code here, in a code block. Much better for future reference than an external paste site.

[sajimon]

Hey, thanks for reply.

I'm afraid thats not it, kit() parameters are optional, but ofcourse I checked it anyway - didn't helped.

[t1497f35]

For some reason you need to pass argc & argv:



int main(int argc, char *argv[]) {
Gtk::Main kit(argc, argv);
...


Also, don't forget to pass the Gtk::Window "hw" to Gtk::Main::run():


Gtk::Main::run(hw);