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VB中不用控件获取本地IP

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GETIP.bas中

Private Const WS_VERSION_REQD = &H101
Private Const WS_VERSION_MAJOR = WS_VERSION_REQD \ &H100 And &HFF&
Private Const WS_VERSION_MINOR = WS_VERSION_REQD And &HFF&
Private Const MIN_SOCKETS_REQD = 1
Private Const SOCKET_ERROR = -1
Private Const WSADescription_Len = 256
Private Const WSASYS_Status_Len = 128
Private Type HOSTENT
hName As Long
hAliases As Long
hAddrType As Integer
hLength As Integer
hAddrList As Long
End Type
Private Type WSADATA
wversion As Integer
wHighVersion As Integer
szDescription(0 To WSADescription_Len) As Byte
szSystemStatus(0 To WSASYS_Status_Len) As Byte
iMaxSockets As Integer
iMaxUdpDg As Integer
lpszVendorInfo As Long
End Type
Private Declare Function WSAGetLastError Lib “WSOCK32.DLL” () As Long
Private Declare Function WSAStartup Lib “WSOCK32.DLL” (ByVal wVersionRequired&, lpWSAData As WSADATA) As Long
Private Declare Function WSACleanup Lib “WSOCK32.DLL” () As Long
Private Declare Function gethostbyname Lib “WSOCK32.DLL” (ByVal hostname$) As Long
Private Declare Sub RtlMoveMemory Lib “kernel32” (hpvDest As Any, ByVal hpvSource&, ByVal cbCopy&)
Public winsockstate As Boolean
Function hibyte(ByVal wParam As Integer)
hibyte = wParam \ &H100 And &HFF&
End Function
Function lobyte(ByVal wParam As Integer)
lobyte = wParam And &HFF&
End Function
Sub SocketsInitialize()
Dim WSAD As WSADATA
Dim iReturn As Integer
Dim sLowByte As String, sHighByte As String, sMsg As String
iReturn = WSAStartup(WS_VERSION_REQD, WSAD)
If iReturn <> 0 Then
winsockstate = True
End
End If
If lobyte(WSAD.wversion) < WS_VERSION_MAJOR or (lobyte(WSAD.wversion) = WS_VERSION_MAJOR And hibyte(WSAD.wversion) < WS_VERSION_MINOR) Then sHighByte = Trim$(Str$(hibyte(WSAD.wversion))) sLowByte = Trim$(Str$(lobyte(WSAD.wversion))) winsockstate = True End End If If WSAD.iMaxSockets < MIN_SOCKETS_REQD Then winsockstate = True End End If End Sub Sub SocketsCleanup() Dim lReturn As Long lReturn = WSACleanup() End Sub Public Function getlocalhostip() Dim hostent_addr As Long Dim host As HOSTENT Dim hostip_addr As Long Dim temp_ip_address() As Byte Dim i As Integer Dim ip_address As String On Error GoTo err hostent_addr = gethostbyname("") RtlMoveMemory host, hostent_addr, LenB(host) RtlMoveMemory hostip_addr, host.hAddrList, 4 ReDim temp_ip_address(1 To host.hLength) RtlMoveMemory temp_ip_address(1), hostip_addr, host.hLength For i = 1 To host.hLength ip_address = ip_address & temp_ip_address(i) & "." Next ip_address = Mid$(ip_address, 1, Len(ip_address) - 1) getlocalhostip = ip_address Exit Function err: getlocalhostip = "获取本地IP失败" End Function

使用方法:
在form中调用getlocalhostip就行了,
List1.AddItem (“内网IP:” & getlocalhostip)


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