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如何用API播放CD

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Declare Function mciSendString& Lib "MMSYSTEM" (ByVal lpstrCommand$,ByVal lpstrReturnStr As Any, ByVal wReturnLen%, ByVal hCallBack%)

'Add the code below to appropriate routines

Sub cmdPlay_Click ()
  Dim lRet As Long
  Dim nCurrentTrack As Integer

  'Open the device
  lRet = mciSendString("open cdaudio alias cd wait", 0&, 0, 0)

  'Set the time format to Tracks (default is milliseconds)
  lRet = mciSendString("set cd time format tmsf", 0&, 0, 0)

  'Then to play from the beginning
  lRet = mciSendString("play cd", 0&, 0, 0)

  'Or to play from a specific track, say track 4
  nCurrentTrack = 4
  lRet = mciSendString("play cd from" & Str(nCurrentTrack), 0&, 0, 0)

End Sub

' Remember to Close the device when ending playback

Sub cmdStop_Click ()
  Dim lRet As Long

  'Stop the playback
  lRet = mciSendString("stop cd wait", 0&, 0, 0)

  DoEvents  'Let Windows process the event

  'Close the device
  lRet = mciSendString("close cd", 0&, 0, 0)

End Sub
//该片段来自于http://outofmemory.cn

标签:VB,系统

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