The screen is freeze, when I press Ctrl+Alt+Del said VFP [Not Respond].
I make so many test of this code, please if you have 3 minutes, try to do it.

Write the little code (a loop of 10 times with an Inkey(1) and calculate the elapsed time) and save it.
Quit of VFP
Set your system time to 23:59:40
Run VFP
And run the code.

Thanks for your quickly reply!