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Thread: determining an IP address........

  1. #1

    Thread Starter
    Addicted Member Smie's Avatar
    Join Date
    Jun 1999
    Location
    Columbus, OH
    Posts
    249

    Question

    how would i be able to determine what my IP address it through VB? thanks!

  2. #2
    Guest
    Add the Microsoft Winsock Control to your form and use this:

    Code:
    MyIPAddress = Winsock1.LocalIP
    Hope this helps.

  3. #3
    Guest
    You can also use api to do it.

    Code:
    'Here's sample code for gethostbyname()
    
    'Add a textbox (Text1) And a Command button (Command1) To a New form And use the
    following code:
    
    'Usage: Fill in the textbox with the name you want to resolve and click the
    command button to resolve the name.
    
    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&)
    
    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
          MsgBox "Winsock.dll is not responding."
          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)))
          sMsg = "Windows Sockets version " & sLowByte & "." & sHighByte
          sMsg = sMsg & " is not supported by winsock.dll "
          MsgBox sMsg
          End
       End If
    
       If WSAD.iMaxSockets < MIN_SOCKETS_REQD Then
          sMsg = "This application requires a minimum of "
          sMsg = sMsg & Trim$(Str$(MIN_SOCKETS_REQD)) & " supported sockets."
          MsgBox sMsg
          End
       End If
    
    End Sub
    
    Sub SocketsCleanup()
       Dim lReturn As Long
    
       lReturn = WSACleanup()
    
       If lReturn <> 0 Then
          MsgBox "Socket error " & Trim$(Str$(lReturn)) & " occurred in Cleanup "
          End
       End If
    
    End Sub
    
    Sub Form_Load()
    
       SocketsInitialize
    
    End Sub
    
    Private Sub Form_Unload(Cancel As Integer)
    
       SocketsCleanup
    
    End Sub
    
    Private Sub Command1_click()
       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
    
       hostent_addr = gethostbyname(Text1)
    
       If hostent_addr = 0 Then
          MsgBox "Can't resolve name."
          Exit Sub
       End If
    
       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)
    
       MsgBox ip_address
    
    End Sub

  4. #4
    Frenzied Member
    Join Date
    Jul 1999
    Posts
    1,800
    WOW
    I think I'll stick with the winsock control.

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