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Determine if the computer has established a modem connection

Determine if the computer has established a modem connection

API Declarations


Public Declare Function RasGetConnectStatus Lib "RasApi32.dll" Alias "RasGetConnectStatusA" (ByVal hRasCon As Long, lpStatus As Any) As Long
Public Const RAS95_MaxEntryName = 256
Public Const RAS95_MaxDeviceType = 16
Public Const RAS95_MaxDeviceName = 32
Public Type RASCONN95
dwSize As Long
hRasCon As Long
szEntryName(RAS95_MaxEntryName) As Byte
szDeviceType(RAS95_MaxDeviceType) As Byte
szDeviceName(RAS95_MaxDeviceName) As Byte
End Type
Public Type RASCONNSTATUS95
dwSize As Long
RasConnState As Long
dwError As Long
szDeviceType(RAS95_MaxDeviceType) As Byte
szDeviceName(RAS95_MaxDeviceName) As Byte
End Type



Rate Determine if the computer has established a modem connection

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    Dim TRasCon(255) As RASCONN95
    Dim lg As Long
    Dim lpcon As Long
    Dim RetVal As Long
    Dim Tstatus As RASCONNSTATUS95
    TRasCon(0).dwSize = 412
    lg = 256 * TRasCon(0).dwSize
    RetVal = RasEnumConnections(TRasCon(0), lg, lpcon)
    If RetVal <> 0 Then
         MsgBox "ERROR"
         Exit Function
    End If
    
    Tstatus.dwSize = 160
    RetVal = RasGetConnectStatus(TRasCon(0).hRasCon, Tstatus)
    If Tstatus.RasConnState = &H2000 Then
      IsModemConnected = True
     Else
      IsModemConnected = False
    End If
End Function