Preventing Windows 7 embedded standard shutdown

Question

Other similar question mostly target Windows XP, where everything was easier. =)

I'd like my application to be able to postpone the windows shutdown transparently, without having windows show this screen:

Is there any option left to me after the Vista changes to the WM_QUERYENDSESSION handling?

The target here is Windows 7 standard embedded on an embedded device that runs only my application. Before shutting down the user needs to perform some manual steps that can not be postponed until the next start and must not be forgotten. I'd like to have the user confirm these steps before shutting down.

Answer 1

I've come to the conclusion, that there is no way to do this. =/

The workaround I've found is to allow shutdown only via the software at opportune moments. The start menu or task manager is not available to the user, and the hardware power button behavior can be configured to do nothing in the systems power options.