can buttons know what happens to programs they launch?

[Eric Mesa]

In my plasmoid I have a button that launches a python program with certain
arguments.  Is it possible for the button to know whether or not the
application exited with an error?  And if so, is it possible to have it
change colour based on that?
--
Eric Mesa
http://about.me/ericmesa
http://www.ericsbinaryworld.com
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