Writing a Timer Callback Function

The following callback function, OneShotTimer, invalidates the identifier for the single timer event and calls a timer routine to handle the application-specific tasks. For more information, see TimeProc12763FI.

void CALLBACK OneShotTimer(UINT wTimerID, UINT msg,

    DWORD dwUser, DWORD dw1, DWORD dw2)

{ 

    NPSEQ npSeq;             // pointer to sequencer data

    npSeq = (NPSEQ)dwUser;
    npSeq->wTimerID = 0;     // invalidate timer ID (no longer in use)

    TimerRoutine(npSeq);     // handle tasks

}