Get host name without winsock control

How would i get the host name of the local machine without the winsock control?

This code will retrieve the IP Address and Hostname of the local machine.

Code:

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Option Explicit

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

  'must be OK, so lets do it
  SocketsInitialize = True
       
End Function

Usage:


Text1.text = GetIPHostName()
Text2.text = GetIPAddress()

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