[pygtk] gtk.combo problem

[rhitam sanyal]

Hi all.. i am trying to create a combo with the pop down list being modfied 
in real time as i type each character :
[CODE=python]
import gtk
window=gtk.Window(gtk.WINDOW_TOPLEVEL)
window.connect("destroy",gtk.main_quit)
combo=gtk.Combo()
combo.set_use_arrows(True)

wordlist=['aata','abbay','acute','adistance','bobbby','cat','cbount','daddy']
def entry_callback(widget,combo):
# ------

combo.entry.connect("activate",entry_callback,combo)
window.add(combo)
window.show()
combo.show()
gtk.main()
[/CODE]

now my aim is when i enter a chareacter 'a' into the combo.entry field .. 
all the words beginning with the letter 'a'  wud be set in the popdown list 
... if the next character is 'c' , meaning now the entry is 'ac' then the pop 
down list should be modified to only the word 'acute' .. now the problem is 
the combo.entry.get_text() function will return a string only when the enter 
key is pressed .. how do i set the pop down list without pressing the enter 
key ?  :(    assuming i already haev a function which is  a python version 
of the C function getch() . returning the character which is pressed on the 
keyboard .. here is the fucntion:

[CODE=python]

def getch():
	import os, tty

	fd = sys.stdin.fileno()
	tty_mode = tty.tcgetattr(fd)
	tty.setcbreak(fd)
	try:
	        ch = os.read(fd, 1)
	finally:
	        tty.tcsetattr(fd, tty.TCSAFLUSH, tty_mode)

	return ch
[/CODE]

but this wud catch a chaarcter entered in the console .. how do i do the 
same for the entry box of the combo.. any help appreciated.
regards,
Rhitam

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