Const RAS_MAXENTRYNAME As Integer = 256
Const RAS_MAXDEVICETYPE As Integer = 16
Const RAS_MAXDEVICENAME As Integer = 128
Const RAS_RASCONNSIZE As Integer = 412
Const ERROR_SUCCESS = 0&
Private Type RasEntryName
dwSize As Long
szEntryName(RAS_MAXENTRYNAME) As Byte
End Type
Private 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
Private Declare Function RasEnumConnections Lib "rasapi32.dll" Alias "RasEnumConnectionsA" _
(lpRasConn As Any, lpcb As Long, lpcConnections As Long) As Long
Private Declare Function RasHangUp Lib "rasapi32.dll" Alias
"RasHangUpA" _
(ByVal hRasConn As Long) As Long
Private gstrISPName As String
Public ReturnCode As Long
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
Private Sub Command1_Click()
Call HangUp
End Sub |
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