[rezame]

Dear Sirs,
I am beginner in C++ and have problem with one my program.
I am C++ dll for protection my Expert advisor(Metatrader software).
I want make demo version for my client and want using time limit on that.
For example each client able use this software for 7 days and after that not workable for him/her.
I want simple code that check this time for me.
I am using win32 console.
Thanks.

[LynxSI]

You should do a quick google search for "Software Rights Management" or "Software License Protection" or similar. There are many third party libraries you can purchase to accomplish this. I myself am primarily a .net developer, so the solution I use may not be of any use to you (Xheo - I use both his obfuscation/encryption system and licensing system).

If you roll your own copy protection scheme it will likely be easily defeatable.
- Ben

[Mike911]

The problem is you need a reliable and trustable time.