Anti Reserse Clock
Posted on 2001-08-04
I wanna ask how can I make anti reverse clock .
I have written a demo application expire in specific date,
and I want to prevent program run again, if its expire and the user try to change back the date.
Do any one have good techniques, and what's the method to do that.
I know that any application change the system time send WM_TIMECHANGE to all top windows .
we can capure this message and detect if the system time has been changed.
first, how can I capture this meesage. if I use a background services capture this message. and is this technique usefull.
is there another techniques can I use ..?