Option Explicit
Option Base 1

Const SORT_ASC = 1
Const SORT_DES = 2
Const SORT_RAND = 3

Function SortAbc(SortMode As Integer) As String
        Dim iChar() As Byte
        Dim bExist  As Boolean
        Dim i%, ind%, iRnd%
        Dim sData$

  ReDim Preserve iChar(0 To (vbKeyZ - vbKeyA)) As Byte

  Call Randomize(vbKeyZ)

  For i = vbKeyA To vbKeyZ
    Select Case SortMode
      Case SORT_DES
        sData = sData & Chr$((vbKeyZ - i) + vbKeyA)
      Case SORT_ASC
        sData = sData & Chr$(i)
      Case SORT_RAND
NewNum:
        iRnd = Rnd * vbKeyZ
        
        If iRnd < vbKeyA Then GoTo NewNum
        
        For ind = 1 To (vbKeyZ - vbKeyA)
          If iChar(ind) = iRnd Then
            bExist = True
            Exit For
          End If
        Next
        
        If ind >= 25 Then bExist = False
        
        If bExist Then GoTo NewNum
        
        iChar(i - vbKeyA) = iRnd
        sData = sData & Chr$(iChar(i - vbKeyA))
        
    End Select
  Next

  SortAbc = sData
End Function

Private Sub Form_KeyDown(KeyCode As Integer, Shift As Integer)
  If Shift = vbShiftMask Then
    'Si está presionada la tecla shift.
    '
    Select Case KeyCode
      Case vbKeyNumpad6:
      Case vbKeyNumpad8:
    End Select
  Else
    'Lo que haría con la misma tecla si Shift no está presionado.
    '
    Select Case KeyCode
      Case vbKeyNumpad6:
      Case vbKeyNumpad8:
    End Select
  End If

Function MakeName() As String
  MakeName = "TM" & Hex$(Timer) & ".TMP"
End Function

Call AppActivate("Título de la ventana")