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QueryPerformanceCounter function

Retrieves the current value of the performance counter, which is a high resolution (<1us) time stamp that can be used for time-interval measurements.

Syntax

C++


BOOL WINAPI QueryPerformanceCounter(
  _Out_  LARGE_INTEGER *lpPerformanceCount
);

Parameters

lpPerformanceCount [out]: A pointer to a variable that receives the current performance-counter value, in counts.

Return value

If the function succeeds, the return value is nonzero.

If the function fails, the return value is zero. To get extended error information, call GetLastError. On systems that run Windows XP or later, the function will always succeed and will thus never return zero.

Remarks

For more info about this function and its usage, see Acquiring high-resolution time stamps.

Windows Phone 8: This API is supported.

Requirements

Minimum supported client	Windows 2000 Professional [desktop apps \| Windows Store apps]
Minimum supported server	Windows 2000 Server [desktop apps \| Windows Store apps]
Header	Winbase.h (include Windows.h)
Library	Kernel32.lib
DLL	Kernel32.dll