desktop exit signals

[Jaap Karssenberg <j g karssenberg student utwente nl>]

Hi,

I was wondering which signal I need to intercept if I want to know when 
the desktop exits while my application is still open. I tried catching 
SIGHUP, SIGTERM and SIGKILL but no luck so far. (The obvious purpose of 
this is to save the state of the application before it exits.)

I know this has been discussed before and the "right" way to do this 
would be using gnome session. The problem is that I do not want to 
depend on gnome libs unless really necessary.

Thanks,

-- Jaap <pardus cpan org>