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QueryPerformanceFrequency The QueryPerformanceFrequency function retrieves the frequency of the high-resolution performance counter, if one exists.
VB4-32,5,6
Declare Function QueryPerformanceFrequency Lib "kernel32" (lpFrequency As LARGE_INTEGER) As Long |
VB.NET
System.Diagnostics.PerformanceCounter |
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Operating Systems Supported |
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Requires Windows NT 3.1 or later; Requires Windows 95 or later |
- 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. |
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. |
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