| The millisecond counter returned from
SysTime() will wrap around to 0 after Windows has been running for
49 days. As Cicode integers are 32 bit numbers, this causes no
problems - because you should only compare or subract two system
time variables. When you compare (or subtract two variables) and
one of them crosses 0, the correct result is still returned.
The only problem you could encounter is if you want to time some
event over a period greater than 49 days (i.e the event goes on now
and off at say 60 days). In this case the time period would be
incorrect. You can time any event that is less than 49 days with
SysTime. For example, if an event is on in 20 days and off in 60
days (so total time is only 40 days). If you want to time an event
over a period greater than 49 days, use the TimeCurrent()
function. |
