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Code:
Public Const MAX_WSADescription = 256 Public Const MAX_WSASYSStatus = 128 Public Const ERROR_SUCCESS As Long = 0 Public Const WS_VERSION_REQD As Long = &H101 Public Const WS_VERSION_MAJOR As Long = WS_VERSION_REQD \ &H100 And &HFF& Public Const WS_VERSION_MINOR As Long = WS_VERSION_REQD And &HFF& Public Const MIN_SOCKETS_REQD As Long = 1 Public Const SOCKET_ERROR As Long = -1 Public Type HOSTENT hName As Long hAliases As Long hAddrType As Integer hLen As Integer hAddrList As Long End Type Public Type WSADATA wVersion As Integer wHighVersion As Integer szDescription(0 To MAX_WSADescription) As Byte szSystemStatus(0 To MAX_WSASYSStatus) As Byte wMaxSockets As Integer wMaxUDPDG As Integer dwVendorInfo As Long End Type Public Declare Function WSAGetLastError Lib "WSOCK32.DLL" () As Long Public Declare Function WSAStartup Lib "WSOCK32.DLL" (ByVal wVersionRequired As Long, lpWSADATA As WSADATA) As Long Public Declare Function WSACleanup Lib "WSOCK32.DLL" () As Long Public Declare Function gethostname Lib "WSOCK32.DLL" (ByVal szHost As String, ByVal dwHostLen As Long) As Long Public Declare Function gethostbyname Lib "WSOCK32.DLL" (ByVal szHost As String) As Long Public Declare Sub CopyMemory Lib "kernel32" Alias "RtlMoveMemory" (hpvDest As Any, ByVal hpvSource As Long, ByVal cbCopy As Long) Public Function GetIPAddress() As String Dim sHostName As String * 256 Dim lpHost As Long Dim HOST As HOSTENT Dim dwIPAddr As Long Dim tmpIPAddr() As Byte Dim i As Integer Dim sIPAddr As String If Not SocketsInitialize() Then GetIPAddress = "" Exit Function End If If gethostname(sHostName, 256) = SOCKET_ERROR Then GetIPAddress = "" MsgBox "Windows Sockets error " & Str$(WSAGetLastError()) & " has occurred. Unable to successfully get Host Name." SocketsCleanup Exit Function End If sHostName = Trim$(sHostName) lpHost = gethostbyname(sHostName) If lpHost = 0 Then GetIPAddress = "" MsgBox "Windows Sockets are not responding. " & "Unable to successfully get Host Name." SocketsCleanup Exit Function End If CopyMemory HOST, lpHost, Len(HOST) CopyMemory dwIPAddr, HOST.hAddrList, 4 ReDim tmpIPAddr(1 To HOST.hLen) CopyMemory tmpIPAddr(1), dwIPAddr, HOST.hLen For i = 1 To HOST.hLen sIPAddr = sIPAddr & tmpIPAddr(i) & "." Next GetIPAddress = Mid$(sIPAddr, 1, Len(sIPAddr) - 1) SocketsCleanup End Function Public Function GetIPHostName() As String Dim sHostName As String * 256 If Not SocketsInitialize() Then GetIPHostName = "" Exit Function End If If gethostname(sHostName, 256) = SOCKET_ERROR Then GetIPHostName = "" MsgBox "Windows Sockets error " & Str$(WSAGetLastError()) & " has occurred. Unable to successfully get Host Name." SocketsCleanup Exit Function End If GetIPHostName = Left$(sHostName, InStr(sHostName, Chr(0)) - 1) SocketsCleanup End Function Public Function HiByte(ByVal wParam As Integer) HiByte = wParam \ &H100 And &HFF& End Function Public Function LoByte(ByVal wParam As Integer) LoByte = wParam And &HFF& End Function Public Sub SocketsCleanup() If WSACleanup() <> ERROR_SUCCESS Then MsgBox "Socket error occurred in Cleanup." End If End Sub Public Function SocketsInitialize() As Boolean Dim WSAD As WSADATA Dim sLoByte As String Dim sHiByte As String If WSAStartup(WS_VERSION_REQD, WSAD) <> ERROR_SUCCESS Then MsgBox "The 32-bit Windows Socket is not responding." SocketsInitialize = False Exit Function End If If WSAD.wMaxSockets < MIN_SOCKETS_REQD Then MsgBox "This application requires a minimum of " & CStr(MIN_SOCKETS_REQD) & " supported sockets." SocketsInitialize = False Exit Function End If If LoByte(WSAD.wVersion) < WS_VERSION_MAJOR Or (LoByte(WSAD.wVersion) = WS_VERSION_MAJOR And HiByte(WSAD.wVersion) < WS_VERSION_MINOR) Then sHiByte = CStr(HiByte(WSAD.wVersion)) sLoByte = CStr(LoByte(WSAD.wVersion)) MsgBox "Sockets version " & sLoByte & "." & sHiByte & " is not supported by 32-bit Windows Sockets." SocketsInitialize = False Exit Function End If SocketsInitialize = True End Function
Code:
Private Sub Form_Load() MsgBox "IP Host Name: " & GetIPHostName() MsgBox "IP Adress: " & GetIPAddress() End Sub
