how can I conver a short dos path to windows path?

How can I conver one of those shortened paths like msdos paths to windows paths (the actual file is not shortened)
(like when you have progra~1 instead of program files)

VB Code:

Public Declare Function GetLongPathName Lib "kernel32" Alias "GetLongPathNameA" (ByVal lpszShortPath As String, ByVal lpszLongPath As String, ByVal cchBuffer As Long) As Long
 
 
Public Function GetLongFilename(ByVal sShortFilename As String) As String
    Dim lRet As Long
    Dim sLongFilename As String
    sLongFilename = String$(1024, " ")
    lRet = GetLongPathName(sShortFilename, sLongFilename, Len(sLongFilename))
    
    If lRet > Len(sLongFilename) Then
        sLongFilename = String$(lRet + 1, " ")
        lRet = GetLongPathName(sShortFilename, sLongFilename, Len(sLongFilename))
    End If
    
    If lRet > 0 Then
        GetLongFilename = Left$(sLongFilename, lRet)
    End If
    
End Function