popover1 = gtk_popover_menu_new_from_model_full (NULL, model, GTK_POPOVER_MENU_NESTED);
gtk_menu_button_set_popover (GTK_MENU_BUTTON (button1), popover1);
+ g_object_unref (builder);
builder = gtk_builder_new_from_file ("popover2.ui");
popover2 = (GtkWidget *)gtk_builder_get_object (builder, "popover");
gtk_menu_button_set_popover (GTK_MENU_BUTTON (button2), popover2);
g_object_bind_property (combo, "active", box, "valign", G_BINDING_SYNC_CREATE);
gtk_grid_attach (GTK_GRID (grid), label , 1, 5, 1, 1);
gtk_grid_attach (GTK_GRID (grid), combo, 2, 5, 1, 1);
+ g_object_unref (builder);
g_signal_connect (win, "destroy", G_CALLBACK (gtk_main_quit), NULL);