Retrieves the frequency of the high-resolution performance counter (which is the same as the processor clock).

BOOLEAN QueryPerformanceFrequency(
    LARGE_INTEGER* pFrequency
);

Parameters

pFrequency

Pointer to a variable that receives the current performance counter frequency, in counts per second.

Return Values

Non-zero

Success.

0 (zero)

Failure. For extended error information, see GetLastError.

Requirements

Note

This function operates in the real-time portion of your application.

See Also

QueryPerformanceCounter, iwin32 API, iwin32 Overview