www.pudn.com > vb_get_ip.rar > Form1.frm

VERSION 5.00 
Begin VB.Form Form1  
   Caption         =   "Form1" 
   ClientHeight    =   3090 
   ClientLeft      =   60 
   ClientTop       =   450 
   ClientWidth     =   4680 
   LinkTopic       =   "Form1" 
   ScaleHeight     =   3090 
   ScaleWidth      =   4680 
   StartUpPosition =   3  '´°¿Úȱʡ 
   Begin VB.CommandButton Command1  
      Caption         =   "Command1" 
      Height          =   480 
      Left            =   1185 
      TabIndex        =   0 
      Top             =   555 
      Width           =   1215 
   End 
End 
Attribute VB_Name = "Form1" 
Attribute VB_GlobalNameSpace = False 
Attribute VB_Creatable = False 
Attribute VB_PredeclaredId = True 
Attribute VB_Exposed = False 
    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 gethostname Lib "WSOCK32.DLL" (ByVal hostname$, _ 
     ByVal HostLen As Long) As Long 
     Private Declare Function gethostbyname Lib "WSOCK32.DLL" (ByVal _ 
     hostname$) 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 
      
     'iMaxSockets is not used in winsock 2. So the following check is only 
     'necessary for winsock 1. If winsock 2 is requested, 
     'the following check can be skipped. 
      
     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 
 
Private Sub Command1_Click() 
 Dim hostname As String * 256 
     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 
      
     If gethostname(hostname, 256) = SOCKET_ERROR Then 
     MsgBox "Windows Sockets error " & Str(WSAGetLastError()) 
     Exit Sub 
     Else 
     hostname = Trim$(hostname) 
     End If 
      
     hostent_addr = gethostbyname(hostname) 
      
     If hostent_addr = 0 Then 
     MsgBox "Winsock.dll is not responding." 
     Exit Sub 
     End If 
      
     RtlMoveMemory host, hostent_addr, LenB(host) 
     RtlMoveMemory hostip_addr, host.hAddrList, 4 
      
     MsgBox hostname 
      
     'get all of the IP address if machine is multi-homed 
      
     Do 
     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 
      
     ip_address = "" 
     host.hAddrList = host.hAddrList + LenB(host.hAddrList) 
     RtlMoveMemory hostip_addr, host.hAddrList, 4 
     Loop While (hostip_addr <> 0) 
End Sub 
 
Private Sub Form_Load() 
SocketsInitialize 
End Sub 
 
Private Sub Form_Unload(Cancel As Integer) 
SocketsCleanup 
End Sub