Closing my internet connection from a VB program

the command of comm1 of vb doesn't work
How I can make what I ask in my title
blade_mikeAsked:
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KhollADCommented:
The code below is a VB way to hangup the connection via Ras API :

'use ---> Call HangUp()

Private Const RAS_MAXENTRYNAME As Integer = 256
Private Const RAS_MAXDEVICETYPE As Integer = 16
Private Const RAS_MAXDEVICENAME As Integer = 128
Private Const RAS_RASCONNSIZE As Integer = 412
Private 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
Private ReturnCode As Long



Private 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

Private 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
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Visual Basic Classic

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