gtk_box_pack_start(GTK_BOX(vbox), buttonbox,
FALSE/*expand*/, FALSE/*fill*/, 1/*padding*/);
gtk_container_add(GTK_CONTAINER(login_window), vbox);
gtk_box_pack_start(GTK_BOX(vbox), buttonbox,
FALSE/*expand*/, FALSE/*fill*/, 1/*padding*/);
gtk_container_add(GTK_CONTAINER(login_window), vbox);