PPT Slide
box = gtk_vbox_new(False, 0);
gtk_box_pack_start(GTK_BOX(box),
button1, FALSE, FALSE, 0);
gtk_box_pack_start(GTK_BOX(box),
button2, FALSE, FALSE, 0);
When “gtk_box_pack_start” is used in a vbox, widgets are inserted at the top of the box, any others added at the top go below.