标题: 如何用API播放CD-->zhuyiwen转移 [打印本页] 作者: WTM1 时间: 2002-9-27 22:37 标题: 如何用API播放CD-->zhuyiwen转移 '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)