VB6获取本机所有IP地址公用函数
因为正好有用到，整了个公用函数，一次获取本机全部IP地址：
Option ExplicitPrivate Declare Function WSAstartup Lib "WSOCK32.DLL" Alias "WSAStartup" (ByVal wVersionRequired As Integer, ByRef lpWSAData As WSAdata) As LongPrivate Declare Function WsACleanup Lib "WSOCK32.DLL" Alias "WSACleanup" () As LongPrivate Declare Function WSAIoctl Lib "ws2_32.dll" (ByVal s As Long, ByVal dwIoControlCode As Long, lpvInBuffer As Any, ByVal cbInBuffer As Long, lpvOutBuffer As Any, ByVal cbOutBuffer As Long, lpcbBytesReturned As Long, lpOverlapped As Long, lpCompletionRoutine As Long) As LongPrivate Declare Function socket Lib "WSOCK32.DLL" (ByVal af As Long, ByVal s_type As Long, ByVal protocol As Long) As LongPrivate Declare Function closesocket Lib "WSOCK32.DLL" (ByVal s As Long) As LongPrivate Declare Sub CopyMemory Lib "kernel32.dll" Alias "RtlMoveMemory" (Destination As Any, Source As Any, ByVal Length As Long)Private Type sockaddr sin_family As Integer sin_port As Integer sin_addr As Long sin_zero As String * 8End TypePrivate Type sockaddr_gen AddressIn As sockaddr filler(0 To 7) As ByteEnd TypePrivate Type INTERFACE_INFO iiFlags As Long iiAddress As sockaddr_gen iiBroadcastAddress As sockaddr_gen iiNetmask As sockaddr_genEnd TypePrivate Type INTERFACEINFO iInfo(0 To 7) As INTERFACE_INFOEnd TypePrivate Type WSAdata wVersion As Integer wHighVersion As Integer szDescription As String * 255 szSystemStatus As String * 128 iMaxSockets As Integer iMaxUdpDg As Integer lpVendorInfo As LongEnd TypePrivate Const AF_INET = 2Private Const SOCK_STREAM = 1Private Const INVALID_SOCKET = -1Private Const SIO_GET_INTERFACE_LIST As Long = &H4004747FPrivate Function GetStrIPFromLong(nIP As Long) As String On Error Resume Next Dim btBuffer(3) As Byte Call CopyMemory(ByVal VarPtr(btBuffer(0)), ByVal VarPtr(nIP), 4) Let GetStrIPFromLong = btBuffer(0) & "." & btBuffer(1) & "." & btBuffer(2) & "." & btBuffer(3)End FunctionPublic Function EnumLocalIpAddress() As String() On Error GoTo Z Dim lngSocketHandle As Long Dim lngBytesReturned As Long Dim tpBuffer As INTERFACEINFO Dim nNumInterfaces As Integer Dim i As Integer Dim StartupInfo As WSAdata Dim strIPBuffer() As String If WSAstartup(&H202, StartupInfo) <> 0 Then Exit Function End If lngSocketHandle = socket(AF_INET, SOCK_STREAM, 0) If lngSocketHandle = INVALID_SOCKET Then Exit Function End If If WSAIoctl(lngSocketHandle, SIO_GET_INTERFACE_LIST, ByVal 0, ByVal 0, tpBuffer, 1024, lngBytesReturned, ByVal 0, ByVal 0) Then closesocket lngSocketHandle Exit Function End If nNumInterfaces = CInt(lngBytesReturned / 76) ReDim strIPBuffer(nNumInterfaces - 1) For i = 0 To nNumInterfaces - 1 strIPBuffer(i) = GetStrIPFromLong(tpBuffer.iInfo(i).iiAddress.AddressIn.sin_addr) Next i EnumLocalIpAddress = strIPBuffer closesocket lngSocketHandle WsACleanup Exit FunctionZ:End Function
使用很简单：
Dim i As Long, strIPAdd() As String strIPAdd = EnumLocalIpAddress If SafeArrayGetDim(strIPAdd) > 0 Then For i = 0 To UBound(strIPAdd) Debug.Print strIPAdd(i) Next End If
