TsctlTimeusElapsedDesc

The start parameter to this function is the return value of a previous call to the Tick function. This function returns the number of microseconds that have passed since the call to Tick which returned the given start value.

A given Time object will have a maximum amount of elapsed time which can be measured before it will roll over and start at zero again. In addition, a 32-bit microsecond value can only represent a maximum of approximately 4295 seconds. If the Time object can measure longer intervals than this the usElapsed64 function (currently not defined) should be called instead.