combobox = GTK_COMBO_BOX (chooser);
model = gtk_combo_box_get_model (combobox);
gtk_combo_box_get_active_iter (combobox, &iter);
combobox = GTK_COMBO_BOX (chooser);
model = gtk_combo_box_get_model (combobox);
gtk_combo_box_get_active_iter (combobox, &iter);