gtk_button_box_set_layout (GTK_BUTTON_BOX (bbox), GTK_BUTTONBOX_START);
gtk_box_pack_start (GTK_BOX (vbox), bbox, FALSE, FALSE, 0);
button = gtk_button_new_with_label ("Select all");
g_signal_connect (button, "clicked", G_CALLBACK (select_all), icon_list);
gtk_button_box_set_layout (GTK_BUTTON_BOX (bbox), GTK_BUTTONBOX_START);
gtk_box_pack_start (GTK_BOX (vbox), bbox, FALSE, FALSE, 0);
button = gtk_button_new_with_label ("Select all");
g_signal_connect (button, "clicked", G_CALLBACK (select_all), icon_list);