questions to anyone who uses wxPython

[damacy]

hello. i'm using wxPython as my GUI package and whenever my program
executes a long process which takes at least 2 or 3 seconds, the user
interface gets corrupted while executing the progrocess during the
period.

i have tried the following lines of code...

frame = mainwindow(None, -1, 'my program')
...
...
frame.UpdateWindowUI()

and it did not make any difference at all. 

could anyone help me?