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QueryPerformanceFrequency

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Windows Embedded CE 6.0 R3

4/8/2010

This function retrieves the frequency of the high-resolution performance counter if one is provided by the OEM.

Syntax

BOOL QueryPerformanceFrequency(
  LARGE_INTEGER* lpFrequency
);

Parameters

  • lpFrequency
    [out] Pointer to a variable that the function sets, in counts per second, to the current performance-counter frequency.

    If the installed hardware does not support a high-resolution performance counter, the value passed back through this pointer can be zero.

Return Value

TRUE indicates that a performance frequency value was successfully filled in. FALSE indicates failure.

Remarks

If the hardware does not support a high frequency counter, QueryPerformanceFrequency will return 1000 because the API defaults to a milliseconds GetTickCount implementation.

Requirements

Header winbase.h
Library coredll.lib
Windows Embedded CE Windows CE 2.0 and later
Windows Mobile Windows Mobile Version 5.0 and later

See Also

Reference

Time Functions
QueryPerformanceCounter

Other Resources