détection de l'état de la connexion internet

Question

Ben voila, j'expose le problème. Comment peut-on faire pour savoir si la connexion internet est active ? c pas possible avec winapi ?
Merci de me répondre assez rapidement.

BasicInstinct · Answer

utilise un winsock:
Winsock1.LocalIP="127.0.0.1" si tu n'est pas connecté

PierrotVB · Answer

Salut

Private Const INTERNET_CONNECTION_CONFIGURED = &H40
Private Const INTERNET_CONNECTION_LAN = &H2
Private Const INTERNET_CONNECTION_MODEM = &H1
Private Const INTERNET_CONNECTION_OFFLINE = &H20
Private Const INTERNET_CONNECTION_PROXY = &H4
Private Const INTERNET_RAS_INSTALLED = &H10
Private Declare Function InternetGetConnectedState Lib "wininet.dll" (ByRef lpdwFlags As Long, ByVal dwReserved As Long) As Long
Private Sub Form_Load()
    'KPD-Team 2001
    'URL: http://www.allapi.net/
    'E-Mail: KPDTeam@Allapi.net
    Dim Ret As Long
    Me.AutoRedraw = True
    'retrieve the connection status
    InternetGetConnectedState Ret, 0&
    'show the result
    If (Ret And INTERNET_CONNECTION_CONFIGURED) = INTERNET_CONNECTION_CONFIGURED Then Me.Print "Local system has a valid connection to the Internet, but it may or may not be currently connected."
    If (Ret And INTERNET_CONNECTION_LAN) = INTERNET_CONNECTION_LAN Then Me.Print "Local system uses a local area network to connect to the Internet."
    If (Ret And INTERNET_CONNECTION_MODEM) = INTERNET_CONNECTION_MODEM Then Me.Print "Local system uses a modem to connect to the Internet."
    If (Ret And INTERNET_CONNECTION_OFFLINE) = INTERNET_CONNECTION_OFFLINE Then Me.Print "Local system is in offline mode."
    If (Ret And INTERNET_CONNECTION_PROXY) = INTERNET_CONNECTION_PROXY Then Me.Print "Local system uses a proxy server to connect to the Internet."
    If (Ret And INTERNET_RAS_INSTALLED) = INTERNET_RAS_INSTALLED Then Me.Print "Local system has RAS installed."
End Sub

Captain Idiot · Answer

Utilise la fonction IsDestinationReachable de l'A.P.I.

plus d'info sur http://www.mvps.org/vbnet/index.html?code/network/isdestinationreachable.htm

cs_CanisLupus · Answer

Désolé, tous ces systèmes ne fonctionnent pas dans ma boite.

CanisLupus

Détection de l'état de la connexion internet

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