Want to exclude panel applet from window list

[NP <noopy org gmail com>]

Hello,

I'm writing a panel applet and when I run the applet, it leaves an
icon that represents the process in the window list.  This is not the
behavior I'd prefer.  What I'm looking to mimic is what the clock
applet does: clock applet runs, no process listed in window list or
process table on system, right button can be used to close applet,
etc.

Does anybody have any suggestions as to functions I can use to
accomplish this?  A link to a function reference or sample code is
totally fine; I can take it from there.

Thanks!

-- 
NP