import gtk

class PyApp(gtk.Window):
   def __init__(self):
      super(PyApp, self).__init__()
      
      self.set_title("Button Box demo")
      self.set_size_request(200,100)
      self.set_position(gtk.WIN_POS_CENTER)
      vb = gtk.VBox()
      box1 = gtk.VButtonBox()
      btn1 = gtk.Button(stock = gtk.STOCK_OK)
      btn2 = gtk.Button(stock = gtk.STOCK_CANCEL)
        
      box1.pack_start(btn1, True, True, 0)
      box1.pack_start(btn2, True, True, 0)
      box1.set_border_width(5)
        
      vb.add(box1)
      box2 = gtk.HButtonBox()
      btn3 = gtk.Button(stock = gtk.STOCK_OK)
      btn4 = gtk.Button(stock = gtk.STOCK_CANCEL)
        
      ent = gtk.Entry()
      box2.pack_start(btn3, True, True, 0)
      box2.pack_start(btn4, True, True, 0)
      box1.set_border_width(5)
        
      vb.add(box2)
      self.add(vb)
      self.show_all()

PyApp()
gtk.main()