timeBeginPeriod

The timeBeginPeriod function sets the minimum timer resolution for an application or device driver.

MMRESULT timeBeginPeriod(
  UINT uPeriod  
);
 

Parameters

uPeriod

Minimum timer resolution, in milliseconds, for the application or device driver.

Return Values

Returns TIMERR_NOERROR if successful or TIMERR_NOCANDO if the resolution specified in uPeriod is out of range.

Remarks

Call this function immediately before using timer services, and call the timeEndPeriod function immediately after you are finished using the timer services.

You must match each call to timeBeginPeriod with a call to timeEndPeriod, specifying the same minimum resolution in both calls. An application can make multiple timeBeginPeriod calls as long as each call is matched with a call to timeEndPeriod.

QuickInfo

  Windows NT: Requires version 3.1 or later.
  Windows: Requires Windows 95 or later.
  Windows CE: Unsupported.
  Header: Declared in mmsystem.h.
  Import Library: Use winmm.lib.

See Also

Multimedia Timers Overview, Multimedia Timer Functions, timeEndPeriod