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QueryPerformanceFrequency info  Overview  Group

The QueryPerformanceFrequency function retrieves the frequency of the high-resolution performance counter, if one exists.

BOOL QueryPerformanceFrequency(

    LARGE_INTEGER *lpFrequency 

// address of current frequency

   );

Parameters

lpFrequency
Points 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, this parameter can be to zero.

Return Values

If the installed hardware supports a high-resolution performance counter, the return value is nonzero.

If the installed hardware does not support a high-resolution performance counter, the return value is zero.

See Also

QueryPerformanceCounter 

file: /Techref/os/win/api/win32/func/src/f69_7.htm, 1KB, , updated: 2000/4/7 11:19, local time: 2024/11/25 21:42,
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