API call for getting your IP

[Evil_Cowgod]

Is there an API call that returns your IP address?

I know theres other ways to get it, but I would like an API call for it.

Thanks

[jim mcnamara]

Private Const MAX_ADAPTER_NAME_LENGTH         As Long = 256
Private Const MAX_ADAPTER_DESCRIPTION_LENGTH  As Long = 128
Private Const MAX_ADAPTER_ADDRESS_LENGTH      As Long = 8
Private Const ERROR_SUCCESS  As Long = 0

Private Type IP_ADDRESS_STRING
    IpAddr(0 To 15)  As Byte
End Type

Private Type IP_MASK_STRING
    IpMask(0 To 15)  As Byte
End Type

Private Type IP_ADDR_STRING
    dwNext     As Long
    IpAddress  As IP_ADDRESS_STRING
    IpMask     As IP_MASK_STRING
    dwContext  As Long
End Type

Private Type IP_ADAPTER_INFO
  dwNext                As Long
  ComboIndex            As Long  'reserved
  sAdapterName(0 To (MAX_ADAPTER_NAME_LENGTH + 3))        As Byte
  sDescription(0 To (MAX_ADAPTER_DESCRIPTION_LENGTH + 3)) As Byte
  dwAddressLength       As Long
  sIPAddress(0 To (MAX_ADAPTER_ADDRESS_LENGTH - 1))       As Byte
  dwIndex               As Long
  uType                 As Long
  uDhcpEnabled          As Long
  CurrentIpAddress      As Long
  IpAddressList         As IP_ADDR_STRING
  GatewayList           As IP_ADDR_STRING
  DhcpServer            As IP_ADDR_STRING
  bHaveWins             As Long
  PrimaryWinsServer     As IP_ADDR_STRING
  SecondaryWinsServer   As IP_ADDR_STRING
  LeaseObtained         As Long
  LeaseExpires          As Long
End Type

Private Declare Function GetAdaptersInfo Lib "iphlpapi.dll" _
  (pTcpTable As Any, _
   pdwSize As Long) As Long
   
Private Declare Sub CopyMemory Lib "kernel32" _
   Alias "RtlMoveMemory" _
  (dst As Any, _
   src As Any, _
   ByVal bcount As Long)
   

Private Sub Command1_Click()

   Text1.Text = LocalIPAddress()

End Sub

   
Private Function LocalIPAddress() As String
   
  'api vars
   Dim cbRequired  As Long
   Dim buff()      As Byte
   Dim Adapter     As IP_ADAPTER_INFO
   Dim AdapterStr  As IP_ADDR_STRING
    
  'working vars
   Dim ptr1        As Long
   Dim sIPAddr     As String
   Dim found       As Boolean
   
   Call GetAdaptersInfo(ByVal 0&, cbRequired)

   If cbRequired > 0 Then
    
      ReDim buff(0 To cbRequired - 1) As Byte
      
      If GetAdaptersInfo(buff(0), cbRequired) = ERROR_SUCCESS Then
      
        'get a pointer to the data stored in buff()
         ptr1 = VarPtr(buff(0))

         Do While (ptr1 <> 0) 'And (found = False)
            CopyMemory Adapter, ByVal ptr1, LenB(Adapter)
         
            With Adapter
                       
              'the DHCP IP address is in the
              'IpAddress.IpAddr member
                 
               sIPAddr = TrimNull(StrConv(.IpAddressList.IpAddress.IpAddr, vbUnicode))
                  
               If Len(sIPAddr) > 0 Then
                  found = True
                  Exit Do
               End If

               ptr1 = .dwNext
                              
            End With 
            
         Loop  

      End If  'If GetAdaptersInfo
   End If  'If cbRequired > 0
   LocalIPAddress = sIPAddr
      
End Function


Private Function TrimNull(item As String)

    Dim pos As Integer
   
   'double check that there is a chr$(0) in the string
    pos = InStr(item, Chr$(0))
    If pos Then
          TrimNull = Left$(item, pos - 1)
    Else: TrimNull = item
    End If
  
End Function