porting Gtk to Qt?

[mismael85]

hi everybody;
i have a problem in porting Gtk code to Qt ,i am using the following code.

control = location_gpsd_control_get_default();
device = (LocationGPSDevice *)g_object_new(LOCATION_TYPE_GPS_DEVICE, NULL);

g_object_set(G_OBJECT(control),
"preferred-method", LOCATION_METHOD_USER_SELECTED,
"preferred-interval", LOCATION_INTERVAL_DEFAULT,
NULL);

g_signal_connect(control, "error-verbose", G_CALLBACK(on_error), loop);
g_signal_connect(device, "changed", G_CALLBACK(on_changed), control);
g_signal_connect(control, "gpsd-stopped", G_CALLBACK(on_stop), loop);

i got an error

invalid use of member (did you forget the '&' ?)
how can i use g_signal_connect in Qt application?

[franz]

Signals & slots (http://doc.trolltech.com/latest/signalsandslots.html)