Starting a Single Timer Event

To start a single timer event, an application must call the timeSetEvent function, specifying the amount of time before the callback occurs, the resolution, the address of the callback function (see TimeProc), and the user data to supply with the callback function. An application can use a function like the following to start a single timer event.

UINT SetTimerCallback(NPSEQ npSeq, // sequencer data

UINT msInterval) // event interval

{

npSeq->wTimerID = timeSetEvent(

msInterval, // delay

wTimerRes, // resolution (global variable)

OneShotCallback, // callback function

(DWORD)npSeq, // user data

TIME_ONESHOT ); // single timer event

if(! npSeq->wTimerID)

return ERR_TIMER;

else

return ERR_NOERROR;

}

For an example of the callback function OneShotCallback, see Writing a Timer Callback Function.

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