#!/usr/bin/env python
 
# example base.py
 
import pygtk
pygtk.require('2.0')
import gtk
 
class HelloWorld:
 
 def hello(self, widget, data=None):
  print "Hello world"
 
 def delete_event(self, widget, event, data=None):
 
  print "delete event occured"
 
  return gtk.FALSE
 
 def destroy(self, widget, data=None):
  gtk.main_quit()
 
 def _init_(self):
 
  self.window = gtk.Window(gtk.WINDOW.TOPLEVEL)
   
  self.window.connect("delete event", self.delete_event)
  self.window.connect("destroy", self.destroy)
  self.window.set_border_width(10)
  self.button = gtk.Button("Hello World" )
  self.button.connect("clicked", self.hello, None)
  self.button.connect_object("clicked", gtk.Widget.destroy, self.window)
  self.window.add(self.button)
  self.button.show()
  self.window.show()
   
 def main(self):
 
  gtk.main()
 
if __name__ == "__main__":
 hello = HelloWorld()
 hello.main()