怎樣用VB斷開與internet的連接

如果你想終止與internet的連接，可以使用VB來斷開連接。
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怎樣用VB斷開與internet的連接？

如果你想終止與internet的連接，可以使用斷開連接的方法，首先你必須聲明以下函數和變量：

Declarations

Public Const RAS_MAXENTRYNAME As Integer = 256Public Const RAS_MAXDEVICETYPE As Integer = 16

Public Const RAS_MAXDEVICENAME As Integer = 128

Public Const RAS_RASCONNSIZE As Integer = 412Public Const ERROR_SUCCESS = 0&

Public Type RasEntryName

dwSize As Long

szEntryName(RAS_MAXENTRYNAME) As Byte

End Type

Public Type RasConn

dwSize As Long

hRasConn As Long

szEntryName(RAS_MAXENTRYNAME) As Byte

szDeviceType(RAS_MAXDEVICETYPE) As Byte

szDeviceName(RAS_MAXDEVICENAME) As Byte

End Type

Public Declare Function RasEnumConnections Lib _

"rasapi32.dll" Alias "RasEnumConnectionsA" (lpRasConn As _

Any, lpcb As Long, lpcConnections As Long) As Long

Public Declare Function RasHangUp Lib "rasapi32.dll" Alias _

"RasHangUpA" (ByVal hRasConn As Long) As Long

Public gstrISPName As String

Public ReturnCode As Long

斷開過程：

Public Sub HangUp()

Dim i As Long

Dim lpRasConn(255) As RasConn

Dim lpcb As Long

Dim lpcConnections As Long

Dim hRasConn As Long

lpRasConn(0).dwSize = RAS_RASCONNSIZE

lpcb = RAS_MAXENTRYNAME * lpRasConn(0).dwSize

lpcConnections = 0

ReturnCode = RasEnumConnections(lpRasConn(0), lpcb, _

lpcConnections)

If ReturnCode = ERROR_SUCCESS Then

For i = 0 To lpcConnections - 1

If Trim(ByteToString(lpRasConn(i).szEntryName)) _

= Trim(gstrISPName) Then

hRasConn = lpRasConn(i).hRasConn

ReturnCode = RasHangUp(ByVal hRasConn)

End If

Next i

End If

End Sub

Public Function ByteToString(bytString() As Byte) As String

Dim i As Integer

ByteToString = ""

i = 0

While bytString(i) = 0&

ByteToString = ByteToString & Chr(bytString(i))

i = i + 1

Wend

End Function

調用斷開過程：

Call HangUp

原文轉自：http://www.anti-gravitydesign.com