【轉(zhuǎn)載】VB6獲取本機(jī)IP的API，可以獲取局域網(wǎng)IP和互聯(lián)網(wǎng)IP【恢復(fù)】 中國電子開發(fā)網(wǎng)...
Option Explicit
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 gethostname Lib "WSOCK32.DLL" (ByVal hostname$, ByVal HostLen As Long) As Long
Private Declare Function gethostbyname Lib "WSOCK32.DLL" (ByVal hostname$) As Long
Private Declare Sub RtlMoveMemory Lib "kernel32" (hpvDest As Any, ByVal hpvSource&, ByVal cbCopy&)
Private Function hibyte(ByVal wParam As Integer)
hibyte = wParam \ &H100 And &HFF&
End Function
Private Function lobyte(ByVal wParam As Integer)
lobyte = wParam And &HFF&
End Function
Private 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
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)))
sMsg = "Windows Sockets version " & sLowByte & "." & sHighByte
'Debug.Print sMsg
'sMsg = sMsg & " winsock.dll tarafindan desteklenmiyor. "
'MsgBox sMsg
'End
End If
Else
'Debug.Print "Winsock.dll Error."
End If
End Sub
Public Function GetCurrentIP(ByVal blnExternalIP As Boolean) As String
Dim hostname As String * 256
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
Dim IP As String
Dim Internal As String
Dim EXTERNAL As String
If gethostname(hostname, 256) <> SOCKET_ERROR Then
hostname = Trim$(hostname)
hostent_addr = gethostbyname(hostname)
If hostent_addr <> 0 Then
RtlMoveMemory host, hostent_addr, LenB(host)
RtlMoveMemory hostip_addr, host.hAddrList, 4
Do
ReDim temp_ip_address(1 To host.hLength)
RtlMoveMemory temp_ip_address(1), hostip_addr, host.hLength
For i = 1 To host.hLength
ip_address = ip_address & temp_ip_address(i) & "."
Next
ip_address = Mid$(ip_address, 1, Len(ip_address) - 1)
' Return Both LAN and External IP Fix
' Master Yoda 30-05-2000
' ##########################################
' HERE'S THE PROBLEM!!!
'TheIP = TheIP + ip_address
' ##########################################
' HERE'S THE FIX!!!
Internal = IP ' Send ONLY the External IP to the CurrentIP Function
EXTERNAL = ip_address ' Send the External IP to the function parameter External
IP = ip_address ' Send LAN IP to the function para Internal
' You don't really need to return parameters,
' it just allows you to get both IPs :)
' ##########################################
ip_address = ""
host.hAddrList = host.hAddrList + LenB(host.hAddrList)
RtlMoveMemory hostip_addr, host.hAddrList, 4
Loop While (hostip_addr <> 0)
If blnExternalIP = True Then
GetCurrentIP = EXTERNAL
Else
GetCurrentIP = Internal
End If
Else
'Debug.Print "Winsock.dll error."
GetCurrentIP = ""
End If
Else
'Debug.Print "Windows Socket Error " & Str(WSAGetLastError())
GetCurrentIP = ""
End If
End Function
Private Sub SocketsCleanup()
Dim lReturn As Long
lReturn = WSACleanup()
If lReturn <> 0 Then
'MsgBox "Socket Error " & Trim$(Str$(lReturn)) & " occurred In Cleanup "
End If
End Sub
Private Sub Class_Initialize()
SocketsInitialize
End Sub
Private Sub Class_Terminate()
SocketsCleanup
End Sub
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