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#!/usr/bin/python
import wnck
import gobject

DESIRED_WINDOW = "Buddy List"
def window_changed(screen):
     win = screen.get_active_window()
     if win is not None and win.get_name() == DESIRED_WINDOW: 
	exit(0)
     else:
	exit(1)
if __name__ == '__main__':
     default_screen = wnck.screen_get_default()
     default_screen.connect('active-window-changed', window_changed)
     gobject.MainLoop().run()