Timer Resolution
To determine the minimum and maximum timer resolutions supported by the timer
services, use the
timeGetDevCaps function. This function fills the
wPeriodMin and
wPeriodMax members of the
TIMECAPS structure with the minimum and maximum resolutions. This range can vary
across computers and Windows platforms.
After you determine the minimum and maximum available timer resolutions, you
must establish the minimum resolution you want your application to use. Use the
timeBeginPeriod and
timeEndPeriod functions to set and clear this resolution. 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.
In both
timeBeginPeriod and
timeEndPeriod, the
uPeriod parameter indicates the minimum timer resolution, in milliseconds. You can
specify any timer resolution value within the range supported by the timer.
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