Hi!

Use the Timer Control, and set the Interval to a certain amount of time,(the one you might need to) and after that period of time, check if there has been any activity with the mouse move event or the keypress event on the form, call to a boolean Variable and assign the false value if there has not been any activity, that way you can close the app without the problem of thinking that you might loose some info, or maybe the timer is just cutting the app when the user is about to start over again.

dont forget to set the timer again to start counting, everytime you execute this, ok?

if you need some code, I can send you an snnipet of it, just let me know fellow!

I hope this can help you,

cheers!