读取本机的IP地址？

[flfq]

有一块网卡连接局域网，用另一块网卡或猫上internet,如何获取上internet的ip地址？我用winsock控件读出的是连局域网的网卡的ip,只有将其禁用才能读internet的ip,如何让其正常工作又能读出internet的ip地址？

[w3k]

顶

[tztz520]

'获取本机IP地址,支持多网卡,可以分别获取多个网卡的IP

Option Explicit

Private Const MAX_ADAPTER_NAME_LENGTH As Long = 256
Private Const MAX_ADAPTER_DESCRIPTION_LENGTH As Long = 128
Private Const MAX_ADAPTER_ADDRESS_LENGTH As Long = 8
Private Const ERROR_SUCCESS As Long = 0

Private Type IP_ADDRESS_STRING
IpAddr(0 To 15) As Byte
End Type

Private Type IP_MASK_STRING
IpMask(0 To 15) As Byte
End Type

Private Type IP_ADDR_STRING
dwNext As Long
IpAddress As IP_ADDRESS_STRING
IpMask As IP_MASK_STRING
dwContext As Long
End Type

Private Type IP_ADAPTER_INFO
dwNext As Long
ComboIndex As Long '保留
sAdapterName(0 To (MAX_ADAPTER_NAME_LENGTH + 3)) As Byte
sDescription(0 To (MAX_ADAPTER_DESCRIPTION_LENGTH + 3)) As Byte
dwAddressLength As Long
sIPAddress(0 To (MAX_ADAPTER_ADDRESS_LENGTH - 1)) As Byte
dwIndex As Long
uType As Long
uDhcpEnabled As Long
CurrentIpAddress As Long
IpAddressList As IP_ADDR_STRING
GatewayList As IP_ADDR_STRING
DhcpServer As IP_ADDR_STRING
bHaveWins As Long
PrimaryWinsServer As IP_ADDR_STRING
SecondaryWinsServer As IP_ADDR_STRING
LeaseObtained As Long
LeaseExpires As Long
End Type


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

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

Private Type ADAPTER_STATUS
adapter_address(5) As Byte
rev_major As Byte
reserved0 As Byte
adapter_type As Byte
rev_minor As Byte
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 GetAdaptersInfo Lib "iphlpapi.dll" (pTcpTable As Any, pdwSize As Long) As Long
Private Declare Sub CopyMemory Lib "kernel32" Alias "RtlMoveMemory" (dst As Any, src As Any, ByVal bcount As Long)
Private Declare Function Netbios Lib "netapi32.dll" (pncb As NCB) As Byte
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 EthernetAddress(LanaNumber As Long) _
As String

Dim udtNCB As NCB
Dim bytResponse As Byte
Dim udtASTAT As ASTAT
Dim udtTempASTAT As ASTAT
Dim lngASTAT As Long
Dim strOut As String
Dim x As Integer

udtNCB.ncb_command = NCBRESET
bytResponse = Netbios(udtNCB)
udtNCB.ncb_command = NCBASTAT
udtNCB.ncb_lana_num = LanaNumber
udtNCB.ncb_callname = "* "
udtNCB.ncb_length = Len(udtASTAT)
lngASTAT = HeapAlloc(GetProcessHeap(), _
HEAP_GENERATE_EXCEPTIONS Or HEAP_ZERO_MEMORY, udtNCB.ncb_length)

strOut = ""
If lngASTAT Then
udtNCB.ncb_buffer = lngASTAT
bytResponse = Netbios(udtNCB)
CopyMemory udtASTAT, udtNCB.ncb_buffer, Len(udtASTAT)
With udtASTAT.adapt
For x = 0 To 5
strOut = strOut & Right$("00" & Hex$(.adapter_address(x)), 2)
Next x
End With
HeapFree GetProcessHeap(), 0, lngASTAT
End If
EthernetAddress = strOut
End Function

Public Function LocalIPAddress() As String
Dim cbRequired As Long
Dim buff() As Byte
Dim Adapter As IP_ADAPTER_INFO
Dim AdapterStr As IP_ADDR_STRING
Dim ptr1 As Long
Dim sIPAddr As String
Dim found As Boolean
Dim iFound As Integer
iFound = 0
sIPAddr = ""
Dim sReturn As String
sReturn = ""
Call GetAdaptersInfo(ByVal 0&, cbRequired)
If cbRequired > 0 Then
ReDim buff(0 To cbRequired - 1) As Byte
If GetAdaptersInfo(buff(0), cbRequired) = ERROR_SUCCESS Then
'获取存放在buff()中的数据的指针
ptr1 = VarPtr(buff(0))
Do While (ptr1 <> 0)
'将第一个网卡的数据转换到IP_ADAPTER_INFO结构中
CopyMemory Adapter, ByVal ptr1, LenB(Adapter)
With Adapter
'IpAddress.IpAddr成员给出了DHCP的IP地址
sIPAddr = TrimNull(StrConv(.IpAddressList.IpAddress.IpAddr, vbUnicode))
If Len(sIPAddr) > 0 Then
iFound = iFound + 1
sReturn = sReturn & "第" & iFound & "个网卡的iP是:" & sIPAddr & vbCrLf
found = True
' Exit Do
End If
ptr1 = .dwNext
End With 'With Adapter
'不再有网卡时，ptr1的值为0
Loop 'Do While (ptr1 <> 0)
End If 'If GetAdaptersInfo
End If 'If cbRequired > 0
'返回结果字符串
LocalIPAddress = sReturn
End Function

Function TrimNull(item As String)
Dim pos As Integer
pos = InStr(item, Chr$(0))
If pos Then
TrimNull = Left$(item, pos - 1)
Else: TrimNull = item
End If
End Function

Private Sub Command1_Click()
MsgBox LocalIPAddress
End Sub

[hhjjhjhj]

http://community.csdn.net/Expert/topic/3308/3308572.xml?temp=.7721674