Vladimir Nesterovsky wrote:

Thank You, That is a good solution yes, and I have to test if th
behaviour is ok (when I get to my computer at work). GetTickCoun
resolution is not good, but i just has to measure if a hardware devic
respond or not, and I do not need high resolution, a brute fix for m
problem was to insert Sleep(10) between two tickCount query. What i
realy bother me is god old GetTickCount can trigger such problems (on
of my programs returned with serious bugreport, I search and tested i
any circumstances, the bug does not apear, after that I get a ne
computer to be in the same condition like the client, and the bug wa
there... (somethime negative elapsed time) ... :(...