expand short file name to long

Posted on 2004-08-04
Medium Priority
Last Modified: 2012-08-13
When I call a function like Environ("TEMP"), I often get a result that looks like this "C:\DOCUME~1\..." instead of this: "c:\Documents and Settings\...".  Is there a way, in VB6, to translate from the short filename to the long?
Question by:dannykrouk
LVL 33

Expert Comment

ID: 11723359

Accepted Solution

ZenMasterrr earned 500 total points
ID: 11723961

cant get that link to open,


Public Function LongFileName(ByVal short_name As String) As _
Dim pos As Integer
Dim result As String
Dim long_name As String

    ' Start after the drive letter if any.
    If Mid$(short_name, 2, 1) = ":" Then
        result = Left$(short_name, 2)
        pos = 3
        result = ""
        pos = 1
    End If

    ' Consider each section in the file name.
    Do While pos > 0
        ' Find the next \.
        pos = InStr(pos + 1, short_name, "\")

        ' Get the next piece of the path.
        If pos = 0 Then
            long_name = Dir$(short_name, vbNormal + _
                vbHidden + vbSystem + vbDirectory)
            long_name = Dir$(Left$(short_name, pos - 1), _
                vbNormal + vbHidden + vbSystem + _
        End If
        result = result & "\" & long_name

    LongFileName = result
End Function

danny, in case you didn't get that link to work :))
LVL 33

Expert Comment

ID: 11724033
Opens ok in mine , just takes a long time for it to load fully.
LVL 26

Expert Comment

ID: 11725037
Private Declare Function GetFullPathName Lib "kernel32" Alias "GetFullPathNameA" (ByVal lpFileName As String, ByVal nBufferLength As Long, ByVal lpBuffer As String, ByVal lpFilePart As String) As Long
Private Sub Form_Load()
    'KPD-Team 2000
    'URL: http://www.allapi.net/
    'E-Mail: KPDTeam@Allapi.net
    Dim Buffer As String, Ret As Long
    'create a buffer
    Buffer = Space(255)
    'copy the current directory to the buffer and append 'myfile.ext'
    Ret = GetFullPathName("myfile.ext", 255, Buffer, "")
    'remove the unnecessary chr$(0)'s
    Buffer = Left(Buffer, Ret)
    'show the result
    MsgBox Buffer
End Sub
LVL 11

Expert Comment

ID: 11725624

Here is the code..

Private Declare Function GetLongPathName Lib "kernel32" Alias "GetLongPathNameA" (ByVal lpszShortPath As String, ByVal lpszLongPath As String, ByVal cchBuffer As Long) As Long

Const MAX_PATH = 260

' Convert a short file/path name to a long name the file or path must exist returns a null string in case of error
' IMPORTANT: this function is only available under Windows 98 and Windows 2000

Public Function LongPathName(ByVal FileName As String) As String
    Dim length As Long, res As String
    On Error Resume Next
    res = String$(MAX_PATH, 0)
    length = GetLongPathName(FileName, res, Len(res))
    If length And Err = 0 Then
        LongPathName = Left$(res, length)
    End If
End Function


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