#!/usr/bin/env python

import gtk

dialog = gtk.Dialog (title = "Transient Parent (dialog)",
                     buttons = (gtk.STOCK_CLOSE, gtk.RESPONSE_ACCEPT))

def button_clicked (button, dialog):
    window = gtk.Window ()
    window.set_title ("Child (normal)")
    window.set_transient_for (dialog)
    window.show ()
    
button = gtk.Button (stock = gtk.STOCK_ADD)
button.connect ("clicked", button_clicked, dialog)
button.show ()
dialog.vbox.pack_start (button, False, False, 5)

dialog.run ()