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Obtaining and Setting Timer Resolution

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The following example calls the timeGetDevCaps function to determine the minimum and maximum timer resolutions supported by the timer services. Before it sets up any timer events, the example establishes the minimum timer resolution by using the timeBeginPeriod function.

#define TARGET_RESOLUTION 1         // 1-millisecond target resolution

TIMECAPS tc;
UINT     wTimerRes;

if (timeGetDevCaps(&tc, sizeof(TIMECAPS)) != TIMERR_NOERROR) 
{
    // Error; application can't continue.
}

wTimerRes = min(max(tc.wPeriodMin, TARGET_RESOLUTION), tc.wPeriodMax);
timeBeginPeriod(wTimerRes);