如何用vb编程实现读取本地计算机的IP地址??

这是一个获取本机的IP的思路：

添加一个WINSOCK控件

在一个窗体上添加一个text

Private Sub Form_Load()

Text1.Text = Winsock1.LocalIP

End Sub

获取物理地址的代码：

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 = &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(sIP As String) As String

Dim sRtn As String

Dim myNcb As NCB

Dim bRet As Byte

Dim aIP() As String

Dim X As Long

Dim nIP As String

If InStr(sIP, ".") = 0 Then

GetMACAddress = "Invaild IP Address."

Exit Function

End If

aIP = Split(sIP, ".", -1, vbTextCompare)

If UBound(aIP()) <> 3 Then

GetMACAddress = "Invaild IP Address."

Exit Function

End If

For X = 0 To UBound(aIP())

If Len(aIP(X)) > 3 Then

GetMACAddress = "Invaild IP Address"

Exit Function

End If

If IsNumeric(aIP(X)) = False Then

GetMACAddress = "Invaild IP Address"

Exit Function

End If

If InStr(aIP(X), ",") <> 0 Then

GetMACAddress = "Invaild IP Address"

Exit Function

End If

If CLng(aIP(X)) > 255 Then

GetMACAddress = "Invaild IP Address"

Exit Function

End If

If nIP = "" Then

nIP = String(3 - Len(aIP(X)), "0") & aIP(X)

Else

nIP = nIP & "." & String(3 - Len(aIP(X)), "0") & aIP(X)

End If

Next

sRtn = ""

myNcb.ncb_command = NCBRESET

bRet = Netbios(myNcb)

myNcb.ncb_command = NCBASTAT

myNcb.ncb_lana_num = 0

myNcb.ncb_callname = nIP & Chr(0)

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

GetMACAddress = "memory allcoation failed!"

Exit Function

End If

myNcb.ncb_buffer = pASTAT

bRet = Netbios(myNcb)

If bRet <> 0 Then

GetMACAddress = "Can not get the MAC Address from IP Address: " & sIP

Exit Function

End If

CopyMemory myASTAT, myNcb.ncb_buffer, Len(myASTAT)

Dim sTemp As String

Dim I As Long

For I = 0 To 5

sTemp = Hex(myASTAT.adapt.adapter_address(I))

If I = 0 Then

sRtn = IIf(Len(sTemp) < 2, "0" & sTemp, sTemp)

Else

sRtn = sRtn & Space(1) & IIf(Len(sTemp) < 2, "0" & sTemp, sTemp)

End If

Next

HeapFree GetProcessHeap(), 0, pASTAT

GetMACAddress = sRtn

End Function

Private Sub Command1_Click()

'修改IP地址即可

MsgBox GetMACAddress("192.168.0.1")

End Sub

//main.cpp

#include <iostream>

#include <fstream>

#include <string>

#include <sstream>

#include <念扮cstdlib>

using namespace std

//产生随机IP地址

string RandIP()

{

stringstream ss

for (int i=0i<4++i)

{

ss <<(rand()%256)

if (i<3)

ss <<'.'

}

return ss.str()

}

//写IP地址到文件filename中

void WriteIP(const string&filename)

{

ofstream fout(filename.c_str())

fout <<RandIP()

}

//从仔派灶文件filename中读取IP地址

unsigned long ReadIP(const string&filename)

{

ifstream fin(filename.c_str())

int val=0

char ch=0

unsigned long ip_val=0

for (int i=0i<4++i)

{

fin >>val >>ch

ip_val = (ip_val<<8) + val

}

return ip_val

}

int main()

{

string filename("ip.txt")

WriteIP(filename)

unsigned long ip_val=ReadIP(filename)

cout <<ip_val <羡氏<endl

return 0

}

IP地址有私有地址和公有地址之分。不管如何，从同一局域网内的计算机上直接获取到的"本机IP"是一定不会相同的。DNS地址没有参考价值，这只是一台用来将www.baidu.com这种地址解析成IP的服务器。如果是使用私网地址的局域网（绝大多数的局域网是如此），局域网里的电脑的“公网地址”并非一定相同，但是可能出现的地址一定是固定的几个，关键看你们有几个公网IP，以及公私网地余简址转换的方式。不管怎么说：私网地址绝对不可以一样。

不知道你们公司是搏陪不是有域环境，如果是的话就容易得多了，可以判断运行基毁蠢这个程序的电脑是不是在你们公司的域环境里（域中的计算机名会是类似于 computername.domainname.com.cn 的形式）。如果不是域环境的话，你需要获取该计算机的公网IP。相关代码网上有很多，这个你可以百度一下。

---