How to know the Palm state is sleep?

[jack]

Hi All,
I want to know the plam current state.  Is it sleeping or  Is it running an
application.
Who can tell me how to know it?
thanks,
-Ligou


-- 
For information on using the Palm Developer Forums, or to unsubscribe, please see 
http://www.palmos.com/dev/tech/support/forums/