下面是一个遍历系统中安装的网卡并返回网卡MAC地址的代码: Private Function MACAddress() As String Set objs = GetObject("winmgmts:").ExecQuery( _ "SELECT MACAddress " & _ "FROM Win32_NetworkAdapter " & _ "WHERE " & _ "((MACAddress Is Not NULL) " & _ "AND (Manufacturer <> " & _ "注释:Microsoft注释:))") For Each obj In objs MACAddress = obj.MACAddress Exit For Next obj End Function
1)在Visual Basic生成标准的EXE文件。缺省创建 Form1。 2)在Form1中添加一命令按钮,缺省名为Command1。 3)把下列代码放到Form1中说明部分。Option Explicit Private Const NCBASTAT = &H33 Private Const NCBNAMSZ = 16 Private Const HEAP_ZERO_MEMORY = &H8 Private Const HEAP_GENERATE_EXCEPTIONS = &H4 Private Const NCBRESET = &H32Private 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 TypePrivate 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_s As Integer max_sess_pkt_size As Integer name_count As Integer End TypePrivate Type NAME_BUFFER name As String * NCBNAMSZ name_num As Integer name_flags As Integer End TypePrivate Type ASTAT adapt As ADAPTER_STATUS NameBuff(30) As NAME_BUFFER End TypePrivate 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把下面的代码放入Command1_Click的事件中:Private Sub Command1_Click() Dim myNcb As NCB Dim bRet As Byte 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) Debug.Print Err.LastDllError pASTAT = HeapAlloc(GetProcessHeap(), HEAP_GENERATE_EXCEPTIONS Or HEAP_ZERO_MEMORY, myNcb.ncb_length) If pASTAT = 0 Then Debug.Print "memory allcoation failed!" Exit Sub End If myNcb.ncb_buffer = pASTAT bRet = Netbios(myNcb) Debug.Print Err.LastDllError CopyMemory myASTAT, myNcb.ncb_buffer, Len(myASTAT) MsgBox Hex(myASTAT.adapt.adapter_address(0)) & " " & Hex(myASTAT.adapt.adapter_address(1)) _ & " " & Hex(myASTAT.adapt.adapter_address(2)) & " " _ & Hex(myASTAT.adapt.adapter_address(3)) _ & " " & Hex(myASTAT.adapt.adapter_address(4)) & " " _ & Hex(myASTAT.adapt.adapter_address(5)) HeapFree GetProcessHeap(), 0, pASTAT End Sub4)按F5,运行该程序。 5)点击Command1。注意,网卡地址将在一信息框中显示出来。
Private Function MACAddress() As String Set objs = GetObject("winmgmts:").ExecQuery( _
"SELECT MACAddress " & _
"FROM Win32_NetworkAdapter " & _
"WHERE " & _
"((MACAddress Is Not NULL) " & _
"AND (Manufacturer <> " & _
"注释:Microsoft注释:))")
For Each obj In objs
MACAddress = obj.MACAddress
Exit For
Next obj
End Function
2)在Form1中添加一命令按钮,缺省名为Command1。
3)把下列代码放到Form1中说明部分。Option Explicit
Private Const NCBASTAT = &H33
Private Const NCBNAMSZ = 16
Private Const HEAP_ZERO_MEMORY = &H8
Private Const HEAP_GENERATE_EXCEPTIONS = &H4
Private Const NCBRESET = &H32Private 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 TypePrivate 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_s As Integer
max_sess_pkt_size As Integer
name_count As Integer
End TypePrivate Type NAME_BUFFER
name As String * NCBNAMSZ
name_num As Integer
name_flags As Integer
End TypePrivate Type ASTAT
adapt As ADAPTER_STATUS
NameBuff(30) As NAME_BUFFER
End TypePrivate 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把下面的代码放入Command1_Click的事件中:Private Sub Command1_Click()
Dim myNcb As NCB
Dim bRet As Byte
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)
Debug.Print Err.LastDllError
pASTAT = HeapAlloc(GetProcessHeap(), HEAP_GENERATE_EXCEPTIONS Or HEAP_ZERO_MEMORY, myNcb.ncb_length)
If pASTAT = 0 Then
Debug.Print "memory allcoation failed!"
Exit Sub
End If
myNcb.ncb_buffer = pASTAT
bRet = Netbios(myNcb)
Debug.Print Err.LastDllError
CopyMemory myASTAT, myNcb.ncb_buffer, Len(myASTAT)
MsgBox Hex(myASTAT.adapt.adapter_address(0)) & " " & Hex(myASTAT.adapt.adapter_address(1)) _
& " " & Hex(myASTAT.adapt.adapter_address(2)) & " " _
& Hex(myASTAT.adapt.adapter_address(3)) _
& " " & Hex(myASTAT.adapt.adapter_address(4)) & " " _
& Hex(myASTAT.adapt.adapter_address(5))
HeapFree GetProcessHeap(), 0, pASTAT
End Sub4)按F5,运行该程序。
5)点击Command1。注意,网卡地址将在一信息框中显示出来。