macaddress.cls

100个asp简单学习例子

VERSION 1.0 CLASS
BEGIN
  MultiUse = -1  'True
  Persistable = 0  'NotPersistable
  DataBindingBehavior = 0  'vbNone
  DataSourceBehavior  = 0  'vbNone
  MTSTransactionMode  = 0  'NotAnMTSObject
END
Attribute VB_Name = "MacAddress"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = True
Attribute VB_PredeclaredId = False
Attribute VB_Exposed = True
Option Explicit

 Const NCBASTAT = &H33
 Const NCBNAMSZ = 16
 Const HEAP_ZERO_MEMORY = &H8
 Const HEAP_GENERATE_EXCEPTIONS = &H4
 Const NCBRESET = &H32

Private Type NCB
    ncb_command As Byte 'Integer
    ncb_retcode As Byte 'Integer
    ncb_lsn As Byte 'Integer
    ncb_num As Byte ' Integer
    ncb_buffer As Long 'String
    ncb_length As Integer
    ncb_callname As String * NCBNAMSZ
    ncb_name As String * NCBNAMSZ
    ncb_rto As Byte 'Integer
    ncb_sto As Byte ' Integer
    ncb_post As Long
    ncb_lana_num As Byte 'Integer
    ncb_cmd_cplt As Byte 'Integer
    ncb_reserve(9) As Byte ' Reserved, must be 0
    ncb_event As Long
End Type

Private Type ADAPTER_STATUS
    adapter_address(5) As Byte 'As String * 6
    rev_major As Byte 'Integer
    reserved0 As Byte 'Integer
    adapter_type As Byte 'Integer
    rev_minor As Byte 'Integer
    duration As Integer
    frmr_recv As Integer
    frmr_xmit As Integer
    iframe_recv_err As Integer
    xmit_aborts As Integer
    xmit_success As Long
    recv_success As Long
    iframe_xmit_err As Integer
    recv_buff_unavail As Integer
    t1_timeouts As Integer
    ti_timeouts As Integer
    Reserved1 As Long
    free_ncbs As Integer
    max_cfg_ncbs As Integer
    max_ncbs As Integer
    xmit_buf_unavail As Integer
    max_dgram_size As Integer
    pending_sess As Integer
    max_cfg_sess As Integer
    max_sess As Integer
    max_sess_pkt_size As Integer
    name_count As Integer
End Type

Private Type NAME_BUFFER
    name As String * NCBNAMSZ
    name_num As Integer
    name_flags As Integer
End Type

Private Type ASTAT
    adapt As ADAPTER_STATUS
    NameBuff(30) As NAME_BUFFER
End Type

Private Declare Function Netbios Lib "netapi32.dll" (pncb As NCB) As Byte
Private Declare Sub CopyMemory Lib "kernel32" Alias "RtlMoveMemory" _
    (hpvDest As Any, ByVal hpvSource As Long, ByVal cbCopy As Long)
Private Declare Function GetProcessHeap Lib "kernel32" () As Long
Private Declare Function HeapAlloc Lib "kernel32" _
    (ByVal hHeap As Long, ByVal dwFlags As Long, _
    ByVal dwBytes As Long) As Long
Private Declare Function HeapFree Lib "kernel32" (ByVal hHeap As Long, _
    ByVal dwFlags As Long, lpMem As Any) As Long

Public Function GetMACAddress() As String
    Dim myNcb As NCB
    Dim bRet As Byte, i As Integer, str As String, macaddress As String
    myNcb.ncb_command = NCBRESET
    bRet = Netbios(myNcb)
    myNcb.ncb_command = NCBASTAT
    myNcb.ncb_lana_num = 0
    myNcb.ncb_callname = "*　　　　　　 "
    Dim myASTAT As ASTAT, tempASTAT As ASTAT
    Dim pASTAT As Long
    myNcb.ncb_length = Len(myASTAT)
    pASTAT = HeapAlloc(GetProcessHeap(), HEAP_GENERATE_EXCEPTIONS _
        Or HEAP_ZERO_MEMORY, myNcb.ncb_length)
    If pASTAT = 0 Then
        Exit Function
    End If
    myNcb.ncb_buffer = pASTAT
    bRet = Netbios(myNcb)
    CopyMemory myASTAT, myNcb.ncb_buffer, Len(myASTAT)
    macaddress = ""
    For i = 0 To 5
       str = CStr(Hex(myASTAT.adapt.adapter_address(i)))
       macaddress = macaddress & IIf(Len(str) = 1, "0" & str, str) & " "
    Next i
    HeapFree GetProcessHeap(), 0, pASTAT
    GetMACAddress = macaddress
End Function