QueryPerformanceFrequency (kernel32)
Last changed: -71.245.77.30
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Summary
The QueryPerformanceFrequency function retrieves the frequency of the high-resolution performance counter, if one exists. The frequency cannot change while the system is running.

C# Signature:

[DllImport("kernel32.dll", SetLastError=true)]
static extern bool QueryPerformanceFrequency(out long frequency);

User-Defined Types:

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Notes:

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Documentation
QueryPerformanceFrequency on MSDN