Test the internet connection on the system through visual c++ application

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I want to know my system is connected to a network or not and I am working in visual c++ 6.0. How could i detect a network through a visual c++ application ???? I also need the codes for same.

Posted 15-Feb-12 20:31pm

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Varun Sareen · Answer 1 · 2012-02-15T20:41:00

Solution 1

This link might be helpful:-

http://social.msdn.microsoft.com/Forums/en/vcgeneral/thread/ea29ed9e-9506-4fd5-9f69-b348a6e5ebdf[^]

Mark this as your answer if it helps you out or else response with query

Posted 15-Feb-12 20:41pm

Varun Sareen

Jochen Arndt · Answer 2 · 2012-02-15T21:21:00

Solution 2

Use InternetGetConnectedState() [^] to get the state. When configured and offline, you may connect using InternetAttemptConnect(0) [^] (this may show the dial-up dialog).

You may also use InternetCheckConnection(), but this uses pings which may fail if ICMP echo request (pings) are blocked somewhere on the route to the host URL.

Posted 15-Feb-12 21:21pm

Jochen Arndt

Comments

chaiein 5-Apr-12 6:43am

should we use any header file in vc9.0?
Even i need this solution.

Jochen Arndt 5-Apr-12 6:52am

The above links mention the requirements including the wininet.h header file. If not included, the compiler will throw an error. A common place to include this header file is stdafx.h.

chaiein · Answer 3 · 2012-04-05T01:00:00

Solution 3

C++

#include "Wininet.h"
bool bstate= InternetGetConnectedState(&dwFlags,0);

This works where bstate shows 0 or 1 where 0 is no connection else 1 is with internet connection.

Posted 5-Apr-12 1:00am

chaiein