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Thread: windows media player

  1. #1

    Thread Starter
    Lively Member
    Join Date
    Jul 2000
    Location
    Sydney, Australia
    Posts
    74

    Cool

    I would like to be able to use windows media player, or something else if someone can offer an alternative to play an mp3 file.

    The only constraint is that it can't be from a component on a form or web page. A friend of mine was able to do this using delphi to convert the component into some sort of class file which was then called to play the mp3. Is the same thing possible in VB?

  2. #2
    Guest
    Here is a module that can Start and Stop MP3 Play
    it also has a few extra functions that I needed when I used it.
    PS:
    I really wish you newbies would search for something before posting, this is like the 3rd or 4th time I have posted this code.
    Code:
    Public Declare Function mciGetErrorString Lib "winmm.dll" Alias "mciGetErrorStringA" (ByVal dwError As Long, ByVal lpstrBuffer As String, ByVal uLength As Long) As Long
    Public Declare Function GetShortPathName Lib "kernel32" Alias "GetShortPathNameA" (ByVal lpszLongPath As String, ByVal lpszShortPath As String, ByVal cchBuffer As Long) As Long
    Public Declare Function mciSendString Lib "winmm.dll" Alias "mciSendStringA" (ByVal lpstrCommand As String, ByVal lpstrReturnString As String, ByVal uReturnLength As Long, ByVal hwndCallback As Long) As Long
    Public Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As Long
    Public Declare Function ReleaseCapture Lib "user32" () As Long
    Public Declare Function SetWindowPos Lib "user32" (ByVal hwnd As Long, ByVal hWndInsertAfter As Long, ByVal x As Long, ByVal y As Long, ByVal cx As Long, ByVal cy As Long, ByVal wFlags As Long) As Long
    Public Const SWP_NOMOVE = &H2
    Public Const SWP_NOSIZE = &H1
    Public Const HWND_TOPMOST = -1
    Public Const HWND_NOTOPMOST = -2
    Public TheFileName As String
    
    
    
    Public Function IsItPlaying() As Boolean
    Static yn As String * 30
        mciSendString "status MP3Play mode", yn, Len(yn), 0
        IsPlaying = (Mid$(yn, 1, 7) = "playing")
    End Function
    
    Public Function mp3Play(FileName As String)
    Dim cmdToDo As String * 255
    Dim dwReturn As Long
    Dim ret As String * 128
    
    Dim tmp As String * 255
    Dim lenShort As Long
    Dim ShortPathAndFie As String
        
        If Dir(FileName) = "" Then
            mmOpen = "Error with input file"
            Exit Function
        End If
        lenShort = GetShortPathName(FileName, tmp, 255)
        ShortPathAndFie = Left$(tmp, lenShort)
        glo_hWnd = hwnd
        cmdToDo = "open " & ShortPathAndFie & " type MPEGVideo Alias MP3Play"
        dwReturn = mciSendString(cmdToDo, 0&, 0&, 0&)
    
        If dwReturn <> 0 Then  'not success
            mciGetErrorString dwReturn, ret, 128
            mmOpen = ret
            MsgBox ret, vbCritical
            Exit Function
        End If
        
        mmOpen = "Success"
        mciSendString "play MP3Play", 0, 0, 0
    End Function
    
    Public Function mp3Pause()
        mciSendString "pause MP3Play", 0, 0, 0
    End Function
    
    Public Function mp3Stop() As String
        mciSendString "stop MP3Play", 0, 0, 0
        mciSendString "close MP3Play", 0, 0, 0
    End Function
    
    Public Function PositionInSec()
    Static PIS As String * 30
        mciSendString "set MP3Play time format milliseconds", 0, 0, 0
        mciSendString "status MP3Play position", PIS, Len(PIS), 0
        PositionInSec = Round(Mid$(PIS, 1, Len(PIS)) / 1000)
    End Function
    
    Public Function Position()
    Static P As String * 30
        mciSendString "set MP3Play time format milliseconds", 0, 0, 0
        mciSendString "status MP3Play position", P, Len(P), 0
        sec = Round(Mid$(P, 1, Len(P)) / 1000)
        If sec < 60 Then Position = "0:" & Format(sec, "00")
        If sec > 59 Then
            mins = Int(sec / 60)
            sec = sec - (mins * 60)
            Position = Format(mins, "00") & ":" & Format(sec, "00")
        End If
    End Function
    
    Public Function LengthInSec()
    Static L As String * 30
        mciSendString "set MP3Play time format milliseconds", 0, 0, 0
        mciSendString "status MP3Play length", L, Len(s), 0
        LengthInSec = Round(Val(Mid$(L, 1, Len(L))) / 1000) 'Round(CInt(Mid$(s, 1, Len(s))) / 1000)
    End Function
    
    Public Function Length()
    Static L As String * 30
        mciSendString "set MP3Play time format milliseconds", 0, 0, 0
        mciSendString "status MP3Play length", L, Len(L), 0
        sec = Round(Val(Mid$(L, 1, Len(L))) / 1000) 'Round(CInt(Mid$(l, 1, Len(l))) / 1000)
        If sec < 60 Then Length = "0:" & Format(sec, "00")
        If sec > 59 Then
            mins = Int(sec / 60)
            sec = sec - (mins * 60)
            Length = Format(mins, "00") & ":" & Format(sec, "00")
        End If
    End Function
    
    
    Public Function SeekTo(Second)
        mciSendString "set MP3Play time format milliseconds", 0, 0, 0
        If IsItPlaying = True Then mciSendString "play MP3Play from " & Second, 0, 0, 0
        If IsItPlaying = False Then mciSendString "seek MP3Play to " & Second, 0, 0, 0
    End Function
    
    Public Sub FormDrag(frm As Form)
    ReleaseCapture
    Call SendMessage(frm.hwnd, 161, 2, 0&)
    End Sub
    
    Public Sub FormOnTop(frm As Form, OTTF As Boolean)
      Select Case OTTF
        Case True
          Call SetWindowPos(frm.hwnd, HWND_TOPMOST, 0, 0 _
            , 0, 0, SWP_NOMOVE Or SWP_NOSIZE)
        Case False
          Call SetWindowPos(frm.hwnd, HWND_NOTOPMOST, 0, 0 _
            , 0, 0, SWP_NOMOVE Or SWP_NOSIZE)
      End Select
    End Sub
    
    Public Function RevInStr(ByVal sIn As String, sFind As String, Optional nStart As Long = 1, Optional bCompare As VbCompareMethod = vbBinaryCompare) As Long
    Dim nPos As Long
        nPos = InStr(nStart, sIn, sFind, bCompare)
        If nPos = 0 Then
            RevInStr = 0
        Else
            RevInStr = Len(sIn) - nPos - Len(sFind) + 2
        End If
    End Function

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