Thanks. After I confirmed 'Alt-F4' would terminate and close a win32 application running independently, I installed 'SendKeys' module and tested with the following code under both Cygwin and Python Windows
import os, SendKeys os.system('program datafile') SendKeys.SendKeys(""" {PAUSE 0.25} %{F4} """) What happened was that the 'program' ran correctly, but it stayed, not closing the window under Cygwin and Python Windows. So it seems to me that this does not work. One more thing: How do I control the pause time if I do not know the execution time of an application? Thanks in advance. KB -- http://mail.python.org/mailman/listinfo/python-list