LPSTR szFileName;//聲音文件名 
MMCKINFO mmckinfoParent; 
MMCKINFO mmckinfoSubChunk; 
DWORD dwFmtSize; 
HMMIO m_hmmio;//音頻文件句柄 
DWORD m_WaveLong; 
HPSTR lpData;//音頻數據 
HANDLE m_hData; 
HANDLE m_hFormat; 
WAVEFORMATEX * lpFormat; 
DWORD m_dwDataOffset; 
DWORD m_dwDataSize; 
WAVEHDR pWaveOutHdr; 
WAVEOUTCAPS pwoc; 
HWAVEOUT hWaveOut; 
//打開波形文件 
if(!(m_hmmio=mmioOpen(szFileName,NULL,MMIO_READ|MMIO_ALLOCBUF))) 
{ 
//File open Error 
Error("Failed to open the file.");//錯誤處理函數 
return false; 
} 
//檢查打開文件是否是聲音文件 
mmckinfoParent.fccType =mmioFOURCC('W','A','V','E'); 
if(mmioDescend(m_hmmio,(LPMMCKINFO)&mmckinfoParent,NULL,MMIO_FINDRIFF)) 
{ 
//NOT WAVE FILE AND QUIT 
} 
//尋找 'fmt' 塊 
mmckinfoSubChunk.ckid =mmioFOURCC('f','m','t',' '); 
if(mmioDescend(m_hmmio,&mmckinfoSubChunk,&mmckinfoParent,MMIO_FINDCHUNK)) 
{ 
//Can't find 'fmt' chunk 
} 
//獲得 'fmt '塊的大小，申請內存 
dwFmtSize=mmckinfoSubChunk.cksize ; 
m_hFormat=LocalAlloc(LMEM_MOVEABLE,LOWORD(dwFmtSize)); 
if(!m_hFormat) 
{ 
//failed alloc memory 
} 
lpFormat=(WAVEFORMATEX*)LocalLock(m_hFormat); 
if(!lpFormat) 
{ 
//failed to lock the memory 
} 
if((unsigned long)mmioRead(m_hmmio,(HPSTR)lpFormat,dwFmtSize)!=dwFmtSize) 
{ 
//failed to read format chunk 
} 
//離開 fmt 塊 
mmioAscend(m_hmmio,&mmckinfoSubChunk,0); 
//尋找 'data' 塊 
mmckinfoSubChunk.ckid=mmioFOURCC('d','a','t','a'); 
if(mmioDescend(m_hmmio,&mmckinfoSubChunk,&mmckinfoParent,MMIO_FINDCHUNK)) 
{ 
//Can't find 'data' chunk 
} 
//獲得 'data'塊的大小 
m_dwDataSize=mmckinfoSubChunk.cksize ; 
m_dwDataOffset =mmckinfoSubChunk.dwDataOffset ; 
if(m_dwDataSize==0L) 
{ 
//no data in the 'data' chunk 
} 
//為音頻數據分配內存 
lpData=new char[m_dwDataSize]; 
if(!lpData) 
{ 
//faile 
} 
if(mmioSeek(m_hmmio,SoundOffset,SEEK_SET)<0) 
{ 
//Failed to read the data chunk
} 
m_WaveLong=mmioRead(m_hmmio,lpData,SoundLong); 
if(m_WaveLong<0) 
{ 
//Failed to read the data chunk 
} 
//檢查音頻設備，返回音頻輸出設備的性能 
if(waveOutGetDeVCaps(WAVE_MAPPER,&pwoc,sizeof(WAVEOUTCAPS))!=0) 
{ 
//Unable to allocate or lock memory 
} 
//檢查音頻輸出設備是否能播放指定的音頻文件 
if(waveOutOpen(&hWaveOut,DevsNum,lpFormat,NULL,NULL,CALLBACK_NULL)!=0) 
{ 
//Failed to OPEN the wave out devices 
} 
//準備待播放的數據 
pWaveOutHdr.lpData =(HPSTR)lpData; 
pWaveOutHdr.dwBufferLength =m_WaveLong; 
pWaveOutHdr.dwFlags =0; 
if(waveOutPrepareHeader(hWaveOut,&pWaveOutHdr,sizeof(WAVEHDR))!=0) 
{ 
//Failed to prepare the wave data buffer 
} 
//播放音頻數據文件 
if(waveOutWrite(hWaveOut,&pWaveOutHdr,sizeof(WAVEHDR))!=0) 
{ 
//Failed to write the wave data buffer 
} 
//關閉音頻輸出設備,釋放內存 
waveOutReset(hWaveOut); 
waveOutClose(hWaveOut); 
LocalUnlock(m_hFormat); 
LocalFree(m_hFormat); 
delete [] lpData;