Seleccionar carpeta

En un Módulo de VB6...

Option Explicit

Private Type BROWSEINFO
  hOwner As Long
  pidlRoot As Long
  pszDisplayName As String
  lpszTitle As String
  ulFlags As Long
  lpfn As Long
  lParam As Long
  iImage As Long
End Type

Private Declare Function SHGetPathFromIDList Lib "shell32.dll" Alias _
            "SHGetPathFromIDListA" (ByVal pidl As Long, _
            ByVal pszPath As String) As Long
            
Private Declare Function SHBrowseForFolder Lib "shell32.dll" Alias _
            "SHBrowseForFolderA" (lpBrowseInfo As BROWSEINFO) _
            As Long
            
Private Const BIF_SOLOCARPETAS = &H1
Private Const BIF_NUEVODIALOGO = 64

Public Function ElegirCarpeta(szDialogTitle As String) As String
  Dim x As Long, bi As BROWSEINFO, dwIList As Long
  Dim szPath As String, wPos As Integer
  
    With bi
        .hOwner = 0
        .lpszTitle = szDialogTitle
        .ulFlags = BIF_SOLOCARPETAS + BIF_NUEVODIALOGO
    End With
    
    dwIList = SHBrowseForFolder(bi)
    szPath = Space$(512)
    x = SHGetPathFromIDList(ByVal dwIList, ByVal szPath)
    
    If x Then
        wPos = InStr(szPath, Chr(0))
        ElegirCarpeta = Left$(szPath, wPos - 1)
    Else
        ElegirCarpeta = ""
    End If
End Function

Luego en un botón...

Private Sub Command1_Click()
    Dim Carpeta As String
    
    Carpeta = ElegirCarpeta("Elegí una carpeta")
    If Carpeta <> "" Then
        Ruta = Carpeta
        CarpetaSeleccionada.Text = Carpeta
    End If
End Sub