C++ (Cpp) GetCurrentTrack示例

示例#1

文件： winCDAudio.cpp 项目： elemem/ExMplayer

//=============================================================================
// Move to the previous track
//=============================================================================
MCIERROR CCDAudio::Backward()
{			
    TCHAR szBuff2[128], szBuff3[32];

	int nCurrTrack = GetCurrentTrack();
	const int nLastTrack = GetTracksCount();

	if( (nCurrTrack == 0) || (nLastTrack == 0) || (nCurrTrack == 1) ) 
		return 0;
	
    nCurrTrack--;

	_stprintf( szBuff2, _T("status cdaudio position track %d"), nCurrTrack ); 

    m_nErrorCode = mciSendString( szBuff2, szBuff3, sizeof(szBuff3), NULL );
	if( m_nErrorCode != 0 ){ 
		MCIError( m_nErrorCode ); 
		return m_nErrorCode;
	}

	memset(szBuff2, 0, sizeof(szBuff2));
	
    _stprintf( szBuff2, _T("play cdaudio from %s"), szBuff3 );

	m_nErrorCode = mciSendString( szBuff2, NULL, 0, NULL );
	if( m_nErrorCode != 0 ){ 
		MCIError( m_nErrorCode ); 
		return m_nErrorCode;
	}

	return m_nErrorCode;
}

示例#2

文件： amsvmc_MCStack.C 项目： krafczyk/AMS

//_____________________________________________________________________________
Int_t  amsvmc_MCStack::GetCurrentParentTrackNumber() const 
{
/// \return  The current track parent ID.

  TParticle* current = GetCurrentTrack();

  if (current) 
    return current->GetFirstMother();
  else 
    return -1;
}  

示例#3

文件： BL_CDEngine.cpp 项目： HaikuArchives/BeFAR

void 
BL_CDEngine::Previous()
{
  if (IsDeviceOpened()) {
    tCdState lState = GetState();	

    if (lState == STATE_NO_DISC) {
      return;
    }

    Play(GetCurrentTrack() - 1);

    // Make sure we don't start playing if we were paused before.
	if (lState == STATE_PAUSED) {
      Pause();
    }
  }
}

示例#4

文件： winCDAudio.cpp 项目： elemem/ExMplayer

//=============================================================================
// Move to the next track
//=============================================================================
MCIERROR CCDAudio::Forward()
{   		
    TCHAR szBuff2[128], szBuff3[32];
	
    int nCurrTrack = GetCurrentTrack();
	const int nLastTrack = GetTracksCount();
	
	// now the current track is the last track
	if( (nCurrTrack == nLastTrack) || (nLastTrack == 0) ) 
		return 0;

	// increment track position	
    nCurrTrack++;

	// form the command string
	_stprintf( szBuff2, _T("status cdaudio position track %d"), nCurrTrack ); 

	// send the command string
    m_nErrorCode = mciSendString( szBuff2, szBuff3, sizeof(szBuff3), NULL );
	if( m_nErrorCode != 0 ){ 
		MCIError( m_nErrorCode ); 
		return m_nErrorCode;
	}

	memset(szBuff2, 0, sizeof(szBuff2));
	
	// form the command string
    _stprintf( szBuff2, _T("play cdaudio from %s"), szBuff3 );

	// send the command string
	m_nErrorCode = mciSendString( szBuff2, NULL, 0, NULL );
	if( m_nErrorCode != 0 ){ 
		MCIError( m_nErrorCode ); 
		return m_nErrorCode;
	}

	return m_nErrorCode;
}