源代码推荐：vb的GUID生成算法

´RETURNS:  GUID if successful; blank string otherwise.
´Unlike the GUIDS in the registry, this function returns GUID
´without "-" characters.  See comments for how to modify if you
´want the dash.

Public Function GUID() As String
    Dim lRetVal As Long
    Dim udtGuid As GUID
   
    Dim sPartOne As String
    Dim sPartTwo As String
    Dim sPartThree As String
    Dim sPartFour As String
    Dim iDataLen As Integer
    Dim iStrLen As Integer
    Dim iCtr As Integer
    Dim sAns As String
  
    On Error GoTo errorhandler
    sAns = ""
   
    lRetVal = CoCreateGuid(udtGuid)
   
    If lRetVal = 0 Then
   
       ´First 8 chars
        sPartOne = Hex$(udtGuid.PartOne)
        iStrLen = Len(sPartOne)
        iDataLen = Len(udtGuid.PartOne)
        sPartOne = String((iDataLen * 2) - iStrLen, "0") _
        & Trim$(sPartOne)
       
        ´Next 4 Chars
        sPartTwo = Hex$(udtGuid.PartTwo)
        iStrLen = Len(sPartTwo)
        iDataLen = Len(udtGuid.PartTwo)
        sPartTwo = String((iDataLen * 2) - iStrLen, "0") _
        & Trim$(sPartTwo)
          
        ´Next 4 Chars
        sPartThree = Hex$(udtGuid.PartThree)
        iStrLen = Len(sPartThree)
        iDataLen = Len(udtGuid.PartThree)
        sPartThree = String((iDataLen * 2) - iStrLen, "0") _
        & Trim$(sPartThree)   ´Next 2 bytes (4 hex digits)
          
        ´Final 16 chars
        For iCtr = 0 To 7
            sPartFour = sPartFour & _
            Format$(Hex$(udtGuid.PartFour(iCtr)), "00")
        Next

     ´To create GUID with "-", change line below to:
     ´sAns = sPartOne & "-" & sPartTwo & "-" & sPartThree _
     ´& "-" & sPartFour
      
       sAns = sPartOne & sPartTwo & sPartThree & sPartFour
           
        End If
       
        GUID = sAns
Exit Function

errorhandler:
´return a blank string if there´s an error
Exit Function
End Function