VB实现ADSL自动拨号的2种方法

VB实现ADSL自动拨号的2种方法

方法1:

Private Sub Command1_Click()
shell "rasdial <连接名称> <连接用户名> <连接密码>"
End Sub

方法2:

1、第一个问题还要添上连接名（就是拨号连接的名字）
我这里有一个现成的代码，挺长的，能上网、断网、查看网络状态、查看连接数目，如果其它的不需要的话，自己看函数的名字，删了即可
把一下代码粘贴到模块中，在窗体某控件的时间中写：
Dim recAdConn&
recAdConn = AddConnection("连接名", "", "", "用户名", "密码", "")
Public Type RASCONN95
dwSize As Long
hRasConn As Long
szEntryName(256) As Byte
szDeviceType(16) As Byte
szDeviceName(128) As Byte
End Type
Public Type RASCONNSTATUS95
dwSize As Long
RasConnState As Long
dwError As Long
szDeviceType(16) As Byte
szDeviceName(128) As Byte
End Type
Public Declare Function RasGetConnectStatus Lib "RasApi32.DLL" Alias "RasGetConnectStatusA" (ByVal hRasCon As Long, lpStatus As Any) As Long
Public Declare Function lstrcpy Lib "kernel32" Alias "lstrcpyA" (lpString1 As Any, ByVal lpString2 As String) As Long
Public Declare Function RasDial Lib "RasApi32.DLL" Alias "RasDialA" (lpRasDialExtensions As Any, ByVal lpszPhonebook As String, lprasdialparams As Any, ByVal dwNotifierType As Long, lpvNotifier As Long, lphRasConn As Long) As Long
Public Declare Function RasHangUp Lib "RasApi32.DLL" Alias "RasHangUpA" (ByVal hRasConn As Long) As Long
Public Declare Function RasEnumConnections Lib "RasApi32.DLL" Alias "RasEnumConnectionsA" (lprasconn As Any, lpcb As Long, lpcConnections As Long) As Long

Public Function AddConnection(strNewEntryName As String, strNewPhoneNumber As String, strNewCallbackNumber As String, strNewUsername As String, strNewPassword As String, strNewDomain As String) As Long
Const APINULL = 0&
Dim lngRetCode As Long
Dim lngRetLstrcpy As Long
Dim lngRetHangUp As Long
Dim lprasdialparams As RASDIALPARAMS95
On Error GoTo 10
lprasdialparams.dwSize = 1052
lngRetLstrcpy = lstrcpy(lprasdialparams.szEntryName(0), strNewEntryName)
lngRetLstrcpy = lstrcpy(lprasdialparams.szPhoneNumber(0), strNewPhoneNumber)
lngRetLstrcpy = lstrcpy(lprasdialparams.szCallbackNumber(0), strNewCallbackNumber)
lngRetLstrcpy = lstrcpy(lprasdialparams.szUserName(0), strNewUsername)
lngRetLstrcpy = lstrcpy(lprasdialparams.szPassword(0), strNewPassword)
lngRetLstrcpy = lstrcpy(lprasdialparams.szDomain(0), strNewDomain)
Screen.MousePointer = vbHourglass
hRasConn = 0
lngRetCode = RasDial(ByVal APINULL, vbNullString, lprasdialparams, APINULL, ByVal APINULL, hRasConn)
Screen.MousePointer = vbDefault
If lngRetCode Then
lngRetHangUp = RasHangUp(hRasConn)
End If
10
AddConnection = lngRetCode
End Function

Public Function GetConnections() As Long
Dim lngRetCode As Long
Dim lpcb As Long
Dim lpcConnections As Long
Dim intArraySize As Long

ReDim lprasconn95(intArraySize) As RASCONN95
lprasconn95(0).dwSize = 412
lpcb = 256 * lprasconn95(0).dwSize
lngRetCode = RasEnumConnections(lprasconn95(0), lpcb, lpcConnections)
GetConnections = lpcConnections
End Function

Public Function HangUpAll() As Boolean
Dim lngRetCode As Long
Dim lpcb As Long
Dim lpcConnections As Long
Dim intArraySize As Long
Dim intLooper As Long

ReDim lprasconn95(intArraySize) As RASCONN95
lprasconn95(0).dwSize = 412
lpcb = 256 * lprasconn95(0).dwSize
lngRetCode = RasEnumConnections(lprasconn95(0), lpcb, lpcConnections)

If lngRetCode = 0 Then
If lpcConnections > 0 Then
For intLooper = 0 To lpcConnections - 1
RasHangUp lprasconn95(intLooper).hRasConn
Next intLooper
Else
HangUpAll = False
Exit Function
End If
End If
HangUpAll = True
End Function
Public Function IsConnected() As Boolean
Dim TRasCon(255) As RASCONN95
Dim lg As Long
Dim lpcon As Long
Dim RetVal As Long
Dim Tstatus As RASCONNSTATUS95
TRasCon(0).dwSize = 412
lg = 256 * TRasCon(0).dwSize
RetVal = RasEnumConnections(TRasCon(0), lg, lpcon)
Tstatus.dwSize = 160
RetVal = RasGetConnectStatus(TRasCon(0).hRasConn, Tstatus)
IsConnected = IIf(Tstatus.RasConnState = &H2000, True, False)
End Function

2、查看当前IP
没有现成的代码，网上应该有的是吧！自己查一查
http://www.baidu.com/s?wd=VB+%B2%E9%BF%B4%B5%B1%C7%B0IP&cl=3

3、断网：第一个问题中已经说了，调用：
在控件事件中写
HangUpAll
完事

方法3:

Option Explicit
Public hRasConn As Long '定义一个指向RAS调用的全局句柄
Public Const APINULL = 0&
Public Const UNLEN = 256
Public Const DNLEN = 15
Public Const PWLEN = 256
Public Const RAS95_MaxPhoneNumber = 128
Public Const RAS95_MaxEntryName = 256
Public Const RAS95_MaxCallbackNumber = RAS95_MaxPhoneNumber

'dwSize表示该结构的大小（以字节为单位）。
'szEntryName表示一个远程访问的入口名，也就是WINDOWS下的拨号网络中的连接图标小的文字；
'szEntryName参数可是是空串，表示仅与第一个有效的MODEM建立远程连接。
'szPhoneNumber为表示呼叫的号码。当szEntryName是空时，
'zPhoneNumber不能为空。szCallbackNumber表示回叫号码，一般都设为空。szUserName为建立远程访问的用户名。
'szPassword为建立远程访问的密码。szDomain为进行远程访问用户名和密码认证的域名。
'我们将szDomain设为空，表示远程访问的服务器也是该域名下的成员
Public Type RASDIALPARAMS95
dwSize As Long
szEntryName(RAS95_MaxEntryName) As Byte
szPhoneNumber(RAS95_MaxPhoneNumber) As Byte
szCallbackNumber(RAS95_MaxCallbackNumber) As Byte
szUserName(UNLEN) As Byte
szPassword(PWLEN) As Byte
szDomain(DNLEN) As Byte
End Type
'**********************************
'* RAS调用错误代号 *
'**********************************
Public Const NOT_SUPPORTED = 120&
Public Const RASBASEERROR = 600&
Public Const SUCCESS = 0&
Public Const ERROR_PORT_ALREADY_OPEN = (RASBASEERROR + 2)
Public Const ERROR_UNKNOWN = (RASBASEERROR + 35)
Public Const ERROR_REQUEST_TIMEOUT = (RASBASEERROR + 38)
Public Const ERROR_PASSWD_EXPIRED = (RASBASEERROR + 48)
Public Const ERROR_NO_DIALIN_PERMISSION = (RASBASEERROR + 49)
Public Const ERROR_SERVER_NOT_RESPONDING = (RASBASEERROR + 50)
Public Const ERROR_UNRECOGNIZED_RESPONSE = (RASBASEERROR + 52)
Public Const ERROR_NO_RESPONSES = (RASBASEERROR + 60)
Public Const ERROR_DEVICE_NOT_READY = (RASBASEERROR + 66)
Public Const ERROR_LINE_BUSY = (RASBASEERROR + 76)
Public Const ERROR_NO_ANSWER = (RASBASEERROR + 78)
Public Const ERROR_NO_CARRIER = (RASBASEERROR + 79)
Public Const ERROR_NO_DIALTONE = (RASBASEERROR + 80)
Public Const ERROR_AUTHENTICATION_FAILURE = (RASBASEERROR + 91)
Public Const ERROR_PPP_TIMEOUT = (RASBASEERROR + 118)
'**********************************
'* RAS API 声明 *
'**********************************
Public Declare Function RasDial Lib "RasApi32.DLL" Alias "RasDialA" (lpRasDialExtensions As Any, ByVal lpszPhonebook As String, lprasdialparams As Any, ByVal dwNotifierType As Long, lpvNotifier As Long, lphRasConn As Long) As Long
'RASHANGUP函数用于断开一个RAS连接。其参数hRasConn为指向一个RAS连接的句柄
Public Declare Function RasHangUp Lib "RasApi32.DLL" Alias "RasHangUpA" (ByVal hRasConn As Long) As Long
Public Declare Function lstrcpy Lib "kernel32" Alias "lstrcpyA" (lpString1 As Any, ByVal lpString2 As String) As Long

Public Function AddConnection(strNewEntryName As String, strNewPhoneNumber As String, strNewCallbackNumber As String, strNewUsername As String, strNewPassword As String, strNewDomain As String) As Integer
Dim lngRetCode As Long
Dim lngRetLstrcpy As Long
Dim lngRetHangUp As Long
Dim lprasdialparams As RASDIALPARAMS95
lprasdialparams.dwSize = 1052
'在WINDOWS95/98中必须将dwSize设为1052'利用lstrcpy函数将字符串拷贝到BYTE数组
lngRetLstrcpy = lstrcpy(lprasdialparams.szEntryName(0), strNewEntryName)
lngRetLstrcpy = lstrcpy(lprasdialparams.szPhoneNumber(0), strNewPhoneNumber)

lngRetLstrcpy = lstrcpy(lprasdialparams.szCallbackNumber(0), strNewCallbackNumber)
lngRetLstrcpy = lstrcpy(lprasdialparams.szUserName(0), strNewUsername)
'MsgBox (lprasdialparams.szUserName(0))
lngRetLstrcpy = lstrcpy(lprasdialparams.szPassword(0), strNewPassword)
lngRetLstrcpy = lstrcpy(lprasdialparams.szDomain(0), strNewDomain)
'我们使用同步通信
Screen.MousePointer = vbHourglass
hRasConn = 0
lngRetCode = RasDial(ByVal APINULL, vbNullString, lprasdialparams, APINULL, ByVal APINULL, hRasConn)
Screen.MousePointer = vbDefault
'测试有没有错误
If lngRetCode Then
lngRetHangUp = RasHangUp(hRasConn)
End If
AddConnection = lngRetCode
End Function
Public Sub RemoveConnection(H_RasConn As Long)
Call RasHangUp(hRasConn)
End Sub 
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