How to shutdown on app close

[Liam Proven]

I'm setting up an Ubuntu box which will run a single full-screen app,
all the time, and nothing else. I have set it up to automatically log
in and then automatically start the app, but I am missing one step,
the final one.

When the user quits the app, I want the machine to shut down.

Is there a straightforward way to accomplish this?

All I could think of was that rather than run my app, I'd run a
script, and the next line would say "shutdown now" or "telinit 0". The
snag is, I think that requires root privileges & I don't want them to
have to enter a password just to quit!

-- 
Liam Proven • Profile: http://www.linkedin.com/in/liamproven
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