...l'utilisation d'un potentiomètre multicurseur permet de redéfinir les bornes utilisée pour jouer une AVI...

Private Const OF_SHARE_DENY_WRITE As Long = &H20
Private Type AVIFILEINFO
    dwMaxBytesPerSec As Long
    dwFlags As Long
    dwCaps As Long
    dwStreams As Long
    dwSuggestedBufferSize As Long
    dwWidth As Long
    dwHeight As Long
    dwScale As Long
    dwRate As Long
    dwLength As Long
    dwEditCount As Long
    szFileType As String * 64
End Type
Private Declare Function AVIFileOpen Lib "avifil32" Alias "AVIFileOpenA" (ppfile As Long, ByVal szFile As String, ByVal mode As Long, pclsidHandler As Any) As Long
Private Declare Function AVIFileRelease Lib "avifil32" (ByVal pfile As Long) As Long
Private Declare Function AVIFileInfo Lib "avifil32" Alias "AVIFileInfoA" (ByVal pfile As Long, pfi As AVIFILEINFO, ByVal lSize As Long) As Long
Private Declare Sub AVIFileInit Lib "avifil32" ()
Private Declare Sub AVIFileExit Lib "avifil32" ()
Private Sub Form_Load()
    Dim hFile As Long, AviInfo As AVIFILEINFO
    'initialize the AVIFile library
    AVIFileInit
    'create a handle to the AVI file
    If AVIFileOpen(hFile, "C:\SIERRA\Half-Life\valve\media\sierra.avi", OF_SHARE_DENY_WRITE, ByVal 0&) = 0 Then
        'retrieve the AVI information
        If AVIFileInfo(hFile, AviInfo, Len(AviInfo)) = 0 Then
            MsgBox "AVI dimensions: " + CStr(AviInfo.dwWidth) + "x" + CStr(AviInfo.dwHeight)
        Else
            MsgBox "Error while retrieving AVI information... :("
        End If
        'release the file handle
        AVIFileRelease hFile
    Else
        MsgBox "Error while opening the AVI file... :("
    End If
    'exit the AVIFile library and decrement the reference count for the library
    AVIFileExit
End Sub