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代码是我们论坛示例中的,如果更换其它音乐时,却无法调节播放时间长度,求帮助,感谢!
目前只重复滴滴滴的声音
'Sound APIs
Private Declare Function apiPlaySound Lib "Winmm.dll" Alias "sndPlaySoundA" _
(ByVal lpszSoundName As String, ByVal uFlags As Long) As Long
'AVI APIs
Private Declare Function apimciSendString Lib "Winmm.dll" Alias "mciSendStringA" _
(ByVal lpstrCommand As String, ByVal lpstrReturnString As String, _
ByVal uReturnLength As Long, ByVal hwndCallback As Long) As Long
Private Declare Function apimciGetErrorString Lib "Winmm.dll" _
Alias "mciGetErrorStringA" (ByVal dwError As Long, _
ByVal lpstrBuffer As String, ByVal uLength As Long) As Long
Function fPlayStuff(ByVal strFilename As String, _
Optional intPlayMode As Integer) As Long
'MUST pass a filename _with_ extension
'Supports Wav, AVI, MID type files
Dim lngRet As Long
Dim strTemp As String
Select Case LCase(fGetFileExt(strFilename))
Case "wav":
If Not IsMissing(intPlayMode) Then
lngRet = apiPlaySound(strFilename, intPlayMode)
Else
MsgBox "Must specify play mode."
Exit Function
End If
Case "avi", "mid":
strTemp = String$(256, 0)
lngRet = apimciSendString("play " & strFilename, strTemp, 255, 0)
End Select
fPlayStuff = lngRet
End Function
Function fStopStuff(ByVal strFilename As String)
'Stops a multimedia playback
Dim lngRet As Long
Dim strTemp As String
Select Case LCase(fGetFileExt(strFilename))
Case "Wav":
lngRet = apiPlaySound(0, pcsASYNC)
Case "avi", "mid":
strTemp = String$(256, 0)
lngRet = apimciSendString("stop " & strFilename, strTemp, 255, 0)
End Select
fStopStuff = lngRet
End Function
Private Function fGetFileExt(ByVal strFullPath As String) As String
Dim intPos As Integer, intLen As Integer
intLen = Len(strFullPath)
If intLen Then
For intPos = intLen To 1 Step -1
'Find the last \
If Mid$(strFullPath, intPos, 1) = "." Then
fGetFileExt = Mid$(strFullPath, intPos + 1)
Exit Function
End If
Next intPos
End If
End Function
Function fGetError(ByVal lngErrNum As Long) As String
' Translate the error code to a string
Dim lngx As Long
Dim strErr As String
strErr = String$(256, 0)
lngx = apimciGetErrorString(lngErrNum, strErr, 255)
strErr = left$(strErr, Len(strErr) - 1)
fGetError = strErr
End Function
Function fatest()
Dim a As Long
a = fPlayStuff("C:\winnt\clock.avi")
'a = fStopStuff("C:\winnt\clock.avi")
End Function
Private Sub Form_Load()
Me.TimerInterval = 1000
End Sub
Private Sub Form_Timer()
Call fPlayStuff(CurrentProject.Path & "\WAV\报警声音.wav", 1)
End Sub