C / C++ / MFC

 void CPipe::StartPlayingFromFile(CString FileName)
{
	m_pFile = new CSoundFile(FileName);
	if(m_pFile && m_pFile->IsOK())
		m_SoundOut.Start(m_pFile->GetFormat());
	else
		ErrorMsg("Unable to open file");
}

bool CSoundOut::Start(WAVEFORMATEX* format)
{
	MMRESULT mmReturn = 0;
	
	if(m_bPlaying || GetDataToSoundOut == NULL || m_pOwner == NULL)
	{
		// already recording!
		return FALSE;
	}
	else
	{
		if(format != NULL)		// was this function called with at specific format
			m_Format = *format;
		
		// open wavein device
		mmReturn = ::waveOutOpen( &m_hPlay, WAVE_MAPPER, &m_Format, m_ThreadID, NULL, CALLBACK_THREAD);
		if(mmReturn)
		{
			waveOutErrorMsg(mmReturn, "in start()");
			return FALSE;
		}
		else
		{
			m_bPlaying = true;
			
			// we need at least 2 -> one for playing, one for refilling (3 is better)
			for(int i=0; i<3; i++)
			{
				CBuffer buf(m_Format.nBlockAlign*m_BufferSize, false);
				GetDataToSoundOut(&buf, m_pOwner);
				AddOutputBufferToQueue(&buf);
			}
		}
	}
	return TRUE;

}

void CAlarmeView::OnTimer(UINT nIDEvent)
{
	SYSTEMTIME SystemTime;
	GetLocalTime(&SystemTime);

	CTime timeTime(SystemTime);  // CTime from C run-time time

	CEventObj *pCls = GetDocument()->GetFirstEvent();
	if(!LockOut && (pCls) && (pCls->GetTime().GetHour() == SystemTime.wHour) &&
		(pCls->GetTime().GetMinute() == SystemTime.wMinute) &&
		(SystemTime.wSecond == 0))
	{
		if(!pCls->IsSoundSupressed())
			StartPlayingFromFile(pCls->GetSound());

		ResetList(true);
		GetDocument()->OnFileSave();
	}
	__super::OnTimer(nIDEvent);
}

brdavid wrote:

What's the timer interval that triggers the sound(s)?
I'm using the OnTimer(UINT nIDEvent) function in the View.cpp file