İnternet Bağlantı Durumunu Öğrenmek

Bu kod sayesinde İnternet'e bağlı olup olmadığımız öğrenilir.

Option Explicit
Private Declare Function RasEnumConnections Lib "RasApi32.dll" _
Alias "RasEnumConnectionsA" (lpRasCon As Any, lpcb As _
Long, lpcConnections As Long] As Long
Private Declare Function RasGetConnectStatus Lib "RasApi32.dll" _
Alias "RasGetConnectStatusA" (ByVal hRasCon As Long, _
lpStatus As Any] As Long
Const RAS_MaxEntryName = 256
Const RAS_MaxDeviceType = 16
Const RAS_MaxDeviceName = 32
Private Type RASType
dwSize As Long
hRasCon As Long
szEntryName(RAS_MaxEntryName] As Byte
szDeviceType(RAS_MaxDeviceType] As Byte
szDeviceName(RAS_MaxDeviceName] As Byte
End Type
Private Type RASStatusType
dwSize As Long
RasConnState As Long
dwError As Long
szDeviceType(RAS_MaxDeviceType] As Byte
szDeviceName(RAS_MaxDeviceName] As Byte
End Type
Private Sub Form_Load(]
Timer1.Interval = 200
Timer1.Enabled = True
End Sub
Private Sub Timer1_Timer(]
DFÜStatus
End Sub
Private Function DFÜStatus(] As Boolean
Dim RAS(255] As RASType, RASStatus As RASStatusType
Dim lg&, lpcon&, Result&
RAS(0].dwSize = 412
lg = 256 * RAS(0].dwSize
Result = RasEnumConnections(RAS(0], lg, lpcon]
If lpcon = 0 Then
Label1.Caption = "Offline" '###
DFÜStatus = False
Else
RASStatus.dwSize = 160
Result = RasGetConnectStatus(RAS(0].hRasCon, RASStatus]
If RASStatus.RasConnState = &H2000 Then
Label1.Caption = "Online" '###
DFÜStatus = True
Else
Label1.Caption = "Baglanti Kopuk" '###
DFÜStatus = False
End If
End If
End Function 

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