如何使用vb6.0制作拨号发送程序?

[biusrpgf]

如何使用vb6.0制作拨号发送程序?从客户端通过拨号,拨到服务器或另一终端上,进行文件传送.

[zwboy]

可以通过M$提供的RAS.DLL接口函数实现拨号，在MSDN中有完整的例子及详细说明（不过是用VC++编写的）。为了方便，我提供了一个用VB写的完整的例子。如有疑问，
请mailto:[e-mail]


'******************************************************************************

'取得目前连线信息
' Function GetAllConnects(ConnEntry() As RASCONN) As Long
'传回值: 总共连线数
'使用方式:
' Dim Conn() As RASCONN
' Dim icnt As Long
' icnt = GetAllConnects(Conn())


'取得所有拨号网络Entry的资讯 (不管有没有连线)
' Function GetRasNameEntries(Entry() As RASENTRYNAME, _
Optional PhonePath As String) As Long
'传回值: 总共Entry数
'使用方式:
' Dim Conn() As RASENTRYNAME
' Dim icnt As Long
' icnt = GetRasNameEntries(Conn())

'呼叫修改某一个连线Entry 的Window
' Sub EditEntry(ByVal EntryName As String, _
Optional ByVal PhonePath As String)
'在拨号网络中新增一个Entry
' Sub CreateEntry(Optional ByVal PhonePath As String)
'自动拨接
' Function DialUp(ByVal EntryName As String, ByVal UserN As String, _
ByVal Pwd As String, Optional ByVal PhonePath As String) As Long
'取消拨接
' Function HangUp(ByVal hconn As Long) As Boolean
' hconn的值来自於
' 1.DialUp()的传回值
' 2.GetAllConnects() RASCONN结构叁数中的hRasConn值

'取得连线状态
' Function GetConnectStatus(ByVal hocnn As Long) As Long
' hconn的值来自於
' 1.DialUp()的传回值
' 2.GetAllConnects() RASCONN结构叁数中的hRasConn值

'******************************************************************************
Option Explicit
Public Const RAS_MaxEntryName = 256
Public Const RAS_MaxDeviceName = 128
Public Const RAS_MaxDeviceType = 16
Public Const RAS_MaxPhoneNumber = 128
Public Const RAS_MaxCallbackNumber = 128
Public Const UNLEN = 256
Public Const PWLEN = 256
Public Const DNLEN = 15
Public Const ERROR_INVALID_HANDLE = 6

Type RASCONN
dwSize As Long '412
hRasConn As Long
szEntryName(RAS_MaxEntryName) As Byte
szDeviceType(RAS_MaxDeviceType) As Byte
szDeviceName(RAS_MaxDeviceName) As Byte
End Type

Type RASENTRYNAME
dwSize As Long '264
szEntryName(RAS_MaxEntryName) As Byte
End Type

Type RASDIALPARAMS
dwSize As Long '1052
szEntryName(RAS_MaxEntryName) As Byte
szPhoneNumber(RAS_MaxPhoneNumber) As Byte
szCallbackNumber(RAS_MaxCallbackNumber) As Byte
szUserName(UNLEN) As Byte
szPassword(PWLEN) As Byte
szDomain(DNLEN) As Byte
End Type

Type RASCONNSTATUS
dwSize As Long '144
RasConnState As Long
dwError As Long
szDeviceType(RAS_MaxDeviceType) As Byte
szDeviceName(RAS_MaxDeviceName) As Byte
End Type

Declare Function RasDial Lib "rasapi32" _
Alias "RasDialA" (DialExt As Long, ByVal lpPhoneBook As String, _
RasDialParam As RASDIALPARAMS, ByVal NotifyType As Long, _
ByVal Notifter As Long, hRasConn As Long) As Long
Declare Function RasCreatePhonebookEntry Lib "rasapi32" _
Alias "RasCreatePhonebookEntryA" (ByVal hWnd As Long, ByVal lpPhoneBook As String) As Long
Declare Function RasEditPhonebookEntry Lib "rasapi32" _
Alias "RasEditPhonebookEntryA" (ByVal hWnd As Long, ByVal lpPhoneBook As String, _
ByVal lpEntryName As String) As Long
Declare Function RasGetErrorString Lib "rasapi32" _
Alias "RasGetErrorStringA" (ByVal ErrValue As Long, ByVal lpErrStr As String, _
ByVal cSize As Long) As Long
Declare Function RasEnumEntries& Lib "rasapi32" _
Alias "RasEnumEntriesA" (ByVal res As String, ByVal lpszPhonebook As String, _
lpRasEntryBuffer As Any, lpcb As Long, lpcEntries As Long)
Declare Function RasEnumConnections Lib "rasapi32" Alias _
"RasEnumConnectionsA" (lprasconn As Any, _
lpcb As Long, lpConnect As Long) As Long
Declare Function RasHangUp Lib "rasapi32" Alias _
"RasHangUpA" (ByVal hRasConn As Long) As Long
Declare Function RasGetConnectStatus Lib "rasapi32" Alias _
"RasGetConnectStatusA" (ByVal hRasConn As Long, _
lprasconnstatus As RASCONNSTATUS) As Long
Declare Function RasGetEntryDialParams Lib "rasapi32" _
Alias "RasGetEntryDialParamsA" (ByVal lpszPhonebook As String, _
lpRasDialParams As RASDIALPARAMS, _
lpfPassword As Byte) As Long

Declare Sub Sleep Lib "kernel32" (ByVal dwMilliseconds As Long)
Enum RasConnState
RASCS_OpenPort = 0
RASCS_PortOpened '1
RASCS_ConnectDevice '2
RASCS_DeviceConnected '3
RASCS_AllDevicesConnected '4
RASCS_Authenticate '5
RASCS_AuthNotify '6
RASCS_AuthRetry '7
RASCS_AuthCallback '8
RASCS_AuthChangePassword '9
RASCS_AuthProject '10
RASCS_AuthLinkSpeed '11
RASCS_AuthAck '12
RASCS_ReAuthenticate '13
RASCS_Authenticated '14
RASCS_PrepareForCallback '15
RASCS_WaitForModemReset '16
RASCS_WaitForCallback '17
RASCS_Projected '18
RASCS_StartAuthentication '19
RASCS_CallbackComplete '20
RASCS_LogonNetwork '21
RASCS_Interactive = &H1000 '4096
RASCS_RetryAuthentication '4097
RASCS_CallbackSetByCaller '4098
RASCS_PasswordExpired '4099
RASCS_Connected = &H2000 '8192
RASCS_Disconnected '8193
End Enum


'取得目前连线资讯
Public Function GetAllConnections(Conn() As RASCONN) As Long
Dim dl&, size&, validConnection&, counter%
ReDim Conn(0)
Conn(0).dwSize = 412
size = 412
dl& = RasEnumConnections(Conn(0), size, validConnection)
If validConnection > 0 Then
ReDim Conn(validConnection - 1)
Conn(0).dwSize = 412
size = validConnection * 412
dl& = RasEnumConnections(Conn(0), size, validConnection)
End If
If dl = 0 Then
GetAllConnections = validConnection
Else
GetAllConnections = -1
End If
End Function

'取得所有拨号网路Entry的资讯(不管有没有连线)
Public Function GetRasNameEntries(Entry() As RASENTRYNAME, Optional PhonePath As String) As Long
Dim di As Long, lpcb As Long, lpentries As Long
Dim addit As Long
Dim i As Long
Dim len5
di& = RasEnumEntries(vbNullString, PhonePath, 0, 0, lpentries)
If lpentries > 0 Then
i = lpentries - 1
ReDim Entry(i)
len5 = LenB(Entry(0))
addit = (4 - (len5 Mod 4)) Mod 4
Entry(0).dwSize = len5 + addit
lpcb = Entry(0).dwSize * (i + 1)
di& = RasEnumEntries(vbNullString, PhonePath, Entry(0), lpcb, lpentries)
End If
If di = 0 Then
GetRasNameEntries = lpentries
Else
GetRasNameEntries = -1
End If
End Function
'呼叫修改某一个连线Entry 的Window
Public Sub EditEntry(ByVal EntryName As String, Optional ByVal PhonePath As String)
Dim di As Long
di = RasEditPhonebookEntry(0, PhonePath, EntryName)
End Sub
'於拨号网路中新增一个Entry
Public Sub CreateEntry(Optional ByVal PhonePath As String)
Call RasCreatePhonebookEntry(0, PhonePath)
End Sub

'自动拨接(Win95 4, 5 个叁数不传，或为vbNullString)
Public Function DialUp(ByVal EntryName As String, ByVal UserN As String, _
ByVal Pwd As String, Optional ByVal PhoneBook As String, Optional sDomain As String) As Long
Dim RasDialPara As RASDIALPARAMS
Dim bya() As Byte, di As Long
Dim len5 As Long, i As Long
Dim hRasConn As Long

len5 = LenB(RasDialPara)
i = (4 - (len5 Mod 4)) Mod 4
RasDialPara.dwSize = len5 + i '1052
bya = StrConv(EntryName, vbFromUnicode) + ChrB(0)
Call CopyByte(RasDialPara.szEntryName, bya)

bya = StrConv(UserN, vbFromUnicode) + ChrB(0)
Call CopyByte(RasDialPara.szUserName, bya)

bya = StrConv(Pwd, vbFromUnicode) + ChrB(0)
Call CopyByte(RasDialPara.szPassword, bya)

bya = StrConv(sDomain, vbFromUnicode) + ChrB(0)
Call CopyByte(RasDialPara.szDomain, bya)
'若使用以下CallBack function的方式，则RasDial()不等连线成功或失败便结束。
di = RasDial(0, PhoneBook, RasDialPara, 0, AddressOf RasDialFunc, hRasConn)

'若第二、三个叁数都是0则，RasDial会等连线成功或失败後才执行下一行指令
'di = RasDial(0, PhoneBook, RasDialPara, 0, 0, hRasConn)

If di = 0 Then
DialUp = hRasConn
Else
DialUp = 0
Dim str5 As String
str5 = String(255, Chr(0))
Call RasGetErrorString(di, str5, 256)
MsgBox Left(str5, InStr(1, str5, Chr(0)) - 1), vbCritical
Call HangUp(hRasConn)
frmRasSet.frameMsg.Visible = False
End If
End Function

Public Sub RasDialFunc(ByVal unMsg As Long, _
ByVal ConnState As Long, _
ByVal dwError As Long)
Dim strMsg As String
Select Case ConnState
Case 0
strMsg = "正在打开．．．"
Case 1
strMsg = "端口已经打开！"
Case 2
strMsg = "正在连接设备．．．"
Case 3
strMsg = "设备已经连接"
Case 4
strMsg = "所有设备已经连接"
Case 5
strMsg = "正在验证用户名及口令．．．"
Case 6
strMsg = "验证通告．．．"
Case 7
strMsg = "验证重试．．．"
Case 8
strMsg = "验证回叫．．．"
Case 9
strMsg = "验证回叫．．．"
Case 10
strMsg = "验证项目．．．"
Case 11
strMsg = "验证连接速度．．．"
Case 12
strMsg = "验证请求．．．"
Case 13
strMsg = "重新验证．．．"
Case 14
strMsg = "验证完成！"
Case 15
strMsg = "准备回叫．．．"
Case 16
strMsg = "等待调制解调器复位"
Case 17
strMsg = "等待回叫．．．"
Case 18
strMsg = "projected"
Case 19
strMsg = "开始鉴定．．．"
Case 20
strMsg = "回叫完成！"
Case 21
strMsg = "正在登录网络．．．"
Case 4096
strMsg = "连接已经成功！"
Case 4097
strMsg = "重新鉴定．．．"
Case 4098
strMsg = "设置回叫．．．"
Case 4099
strMsg = "口令错误！"
Case 8192
strMsg = "已经连接啦！"
Case 8193
strMsg = "已经断开啦！"
End Select

frmRasSet.lstMsg.AddItem strMsg
frmRasSet.lstMsg.ListIndex = frmRasSet.lstMsg.NewIndex
If ConnState = RASCS_Connected Or ConnState = RASCS_Interactive Then
'frmRasSet.frameMsg.Visible = False
Load frmRemote
Unload frmRasSet
frmRemote.Show
End If
If ConnState = RASCS_Disconnected Then
MsgBox "拨号网络连接失败！"
frmRasSet.frameMsg.Visible = False
End If
End Sub
'取消拨接
Public Function HangUp(ByVal hconn As Long) As Boolean
Dim st As Long, len5 As Long
Dim i As Long, ConStatus As RASCONNSTATUS
st = RasHangUp(hconn)
len5 = LenB(ConStatus)
i = (4 - (len5 Mod 4)) Mod 4
ConStatus.dwSize = len5 + i
Do While True
Call Sleep(0)
i = RasGetConnectStatus(hconn, ConStatus)
If i = ERROR_INVALID_HANDLE Then
Exit Do
End If
Loop
If st = 0 Then
HangUp = True
Else
HangUp = False
End If
End Function
'取得连线状态
Public Function GetConnectStatus(ByVal hconn As Long) As Long
Dim i As Long, ConStatus As RASCONNSTATUS
Dim len5 As Long
len5 = LenB(ConStatus)
i = (4 - (len5 Mod 4)) Mod 4
ConStatus.dwSize = len5 + i
i = RasGetConnectStatus(hconn, ConStatus)
If i = 0 Then
GetConnectStatus = ConStatus.RasConnState
Else
GetConnectStatus = -1
End If
End Function
Private Sub CopyByte(dest() As Byte, sour() As Byte)
Dim sourL As Long, sourU As Long
Dim destL As Long, destU As Long, i As Long, J As Long
sourL = LBound(sour)
sourU = UBound(sour)
destL = LBound(dest)
destU = UBound(dest)
J = 0
For i = sourL To sourU
dest(destL + J) = sour(i)
J = J + 1
If J >= (destU - destL) + 1 Then
Exit For
End If
Next i
End Sub

[Un1]

参见：

http://www.midatech.com/csdn/expert/TopicView.asp?id=4191
http://www.midatech.com/csdn/expert/TopicView.asp?id=4115
http://www.midatech.com/csdn/expert/TopicView.asp?id=1954

http://www.midatech.com/csdn/expert/TopicView.asp?id=1670

[Chen_Lin]

PPP,建立TCP/IP，然后用FTP传送文件。

[007]

使用Comm控件,其使用方法例程中有,另外,你得熟悉Modem的AT命令集,方法如下:
1.在服务器端发字符串"ats0=1"设振铃响几声后自动连接
2.从客户端打开串口,发字符串"atd....(电话号码)"
3.如果电话接好的话,可以听到拨号,连接的声音
4.连接后,向串口发数据即可完成远程通讯

还碰见具体问题时,可以与我联系email:[e-mail]