* * HELP & MANUAL PREMIUM PACK 4 DEMO VERSION * *
This documentation was styled with a demo skin from the Premium Pack 4 add-on for Help & Manual. The contents of the skin are encrypted and not configurable. You can only publish HM projects with this skin. You cannot edit it or change it.
This version is copyright and may only be used for local testing purposes. It may not be distributed.
Please purchase the full version of the Premium Pack to get the configurable skins and remove this notice. The package will also include the Toolbox configuration utility for Premium Pack skins.
Description
Retrieves the current value of the high-resolution performance counter.
Syntax
n = QueryPerformanceCounter
Returns
Number
Parameters
Name |
Type |
Optional |
Meaning |
Remarks
Important notes
QueryPerformanceCounter and QueryPerformanceFrequency offer a bit better resolution, but have different issues. For example in Windows XP, all AMD Athlon X2 dual core CPUs return the PC of either of the cores "randomly" (the PC sometimes jumps a bit backwards), unless you specially install AMD dual core driver package to fix the issue. We haven't noticed any other dual+ core CPUs having similar issues (p4 dual, p4 ht, core2 dual, core2 quad, phenom quad). |
Restrictions
See also
Examples
