最简单的是用 Winsock 控件
解决方案 »
- 语法错误(操作符丢失)在查询表达式 ' 所属类别='厂家'and姓名='张"中
- ListView控件问题
- 怎样测试一个文件下载地址有效,在线等
- 初学vb,但是这个问题都好难
- 小弟请大家喝茶,做题目(在线等待,立马结贴.斑竹不要删贴,这也是学习)
- where语句错误
- 如何让多条记录相同的字段只显示一次?(特急)
- 如何在一个EXE文件中激活另一个正在运行的EXE文件?
- 想将自己的控件编译成ocx文件时,提示“检测到非公共的 UserControl”,是怎么回事?怎么解决??
- VB中的画图主要做什么用呢?
- 想写一个多线程抓网页, 然后分析当中有用的信息, 存储到数据库
- 一个对于各位来说比较简单的问题
'2.在窗口上添加一个 按钮
'3.把下面代码全部复制到窗体代码区中
'4.运行程序,点一下按钮,弹出的msgbox会显示出LocalHost的IPPrivate 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 = 128Private Type HOSTENT
hName As Long
hAliases As Long
hAddrType As Integer
hLength As Integer
hAddrList As Long
End TypePrivate 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 TypePrivate 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$) As Long
Private Declare Sub RtlMoveMemory Lib "KERNEL32" (hpvDest As Any, ByVal hpvSource&, ByVal cbCopy&)
Function hibyte(ByVal wParam As Integer)
hibyte = wParam \ &H100 And &HFF&
End FunctionFunction lobyte(ByVal wParam As Integer)
lobyte = wParam And &HFF&
End FunctionSub SocketsInitialize()
Dim WSAD As WSADATA
Dim iReturn As Integer
Dim sLowByte As String, sHighByte As String, sMsg As String
iReturn = WSAStartup(WS_VERSION_REQD, WSAD)
If iReturn <> 0 Then
MsgBox "Winsock.dll is not responding."
End
End If
If lobyte(WSAD.wversion) < WS_VERSION_MAJOR Or (lobyte(WSAD.wversion) = WS_VERSION_MAJOR And hibyte(WSAD.wversion) < WS_VERSION_MINOR) Then
sHighByte = Trim$(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$(MIN_SOCKETS_REQD)) & " supported sockets."
MsgBox sMsg
End
End If
End SubSub SocketsCleanup()
Dim lReturn As Long
lReturn = WSACleanup()
If lReturn <> 0 Then
MsgBox "Socket error " & Trim$(Str$(lReturn)) & " occurred in Cleanup "
End
End If
End SubSub Form_Load()
SocketsInitialize
End SubPrivate Sub Form_Unload(Cancel As Integer)
SocketsCleanup
End SubPrivate Sub Command1_click()
Dim hostent_addr As Long
Dim host As HOSTENT
Dim hostip_addr As Long
Dim temp_ip_address() As Byte
Dim i As Integer
Dim ip_address As String
hostent_addr = gethostbyname(Text1)
If hostent_addr = 0 Then
MsgBox "Can't resolve name."
Exit Sub
End If
RtlMoveMemory host, hostent_addr, LenB(host)
RtlMoveMemory hostip_addr, host.hAddrList, 4
ReDim temp_ip_address(1 To host.hLength)
RtlMoveMemory temp_ip_address(1), hostip_addr, host.hLength
For i = 1 To host.hLength
ip_address = ip_address & temp_ip_address(i) & "."
Next
ip_address = Mid$(ip_address, 1, Len(ip_address) - 1)
MsgBox ip_address '这个就是 ip 了
End Sub
'一点问题也没有,散分吧 :)