如何在程序中得到自己的Internet IP地址?

[shlp]

提要:哪位仁兄知道怎样在VB中得到自己的Internet IP地址?(Not Local IP)
要求:1.程序短小精悍;2.方法简便.

(:> 这40分可不是好拿的啊......

[Firing_Sky]

用API函数：gethostbyname

[jing]

gethostbyaddr

[littletao]

winsock控件，
strIP=winsock1.localIP

[littletao]

啊，sorry,没看到no local ip.hehe
不过自己的 internet ip是什么意思？
拨号时的？

[jing]

winsock.dll

[kxy]

function GetIP: string;
type
TaPInAddr = Array[0..10] of PInAddr;
PaPInAddr = ^TaPInAddr;
var
phe: PHostEnt;
pptr: PaPInAddr;
Buffer: Array[0..63] of Char;
I: Integer;
GInitData: TWSAData;
IP: String;
begin
WSAStartup($101, GInitData);
Result := False;
GetHostName(Buffer, SizeOf(Buffer));
phe := GetHostByName(buffer);
if phe = nil then Exit;
pPtr := PaPInAddr(phe^.h_addr_list);
I := 0;
while pPtr^[I] <> nil do
begin
IP := inet_ntoa(pptr^[I]^);
Inc(I);
end;
WSACleanup;
Result := IP;
end;
要使用winsock.h 自己改成VC的吧.

[shlp]

"gethostbyaddr"或"gethostbyname"函数具体如何声明?

[kxy]

你打开winsock.h看看不就行了.

[wyj]

人家要VB的，老K你怎么粘上一段DELPHI的，哈哈..

[freeboy]

http://www.quanqiu.com/vb 上有我的详细例程(VB6)。

[shlp]

请问:"gethostbyaddr"或"gethostbyname"函数具体如何声明?
不知在哪个DLL文件中?

[olo]

winsock.h

[PerduBug]

得到IP地址其实有N多方法,我是利用WinSock来得到的:首先调用WSAStartup()初始化winsock32.DLL,才能调用 gethostname()得到HostName,再利用得到的HostName调用gethostbyname()得到一个Hostent类型的结构体,该结构体中就包含了IP地址:inet_ntoa (*((struct in_addr*)*(HostName->h_addr_list))).

[bjseaman]

窗体中需要一个command1控件

Option Explicit
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$, HostLen&) As Long
Private Declare Function gethostbyname Lib "WSOCK32.DLL" (ByVal hostname$) 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



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

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 hostname
MsgBox ip_address

End Sub

Private Sub Form_Load()
SocketsInitialize
End Sub


Private Sub Form_Unload(Cancel As Integer)
SocketsCleanup
End Sub