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如何用API播放CD-->zhuyiwen转移

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发表于 2002-9-27 22:37:00 | 只看该作者 回帖奖励 |倒序浏览 |阅读模式
'Author: Gordon F. MacLeod
' How to play a CD Audio disc via API
' Declare the following API
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
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