internet connection alive? 1

[bobo12]

how do i check if internet connection is alive on xp,2000,98? are they the same funcs or different?

 

[timmay3141]

Use winsock and try to connect to some web page, like Google, and see if it fails or not.

 

[bobo12]

yes this works, but i was thinking of something rather more behind the scenes, so the user won't actually see a browser trying to open google.com. any other advice,

 

[cpjust]

Why would the user see a browser opening?

 

[sedj]

Use something like MFC WinInet to connect to a web server, and download a page to test the connection - you don't need to open a browser ...

http://msdn.microsoft.com/library/d...teps_in_a_typical_http_client_application.asp

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[bobo12]

hi, here is my short code to basically check for internet connection but i keep getting these 3 unresovled external symbols errors listed below...

my code...
HINTERNET hINet, hConnection, hData;
CHAR buffer[2048] ;

DWORD dwRead, dwFlags, dwStatus ;

hINet = InternetOpen("InetURL/1.0", INTERNET_OPEN_TYPE_PRECONFIG, NULL, NULL, 0 );

if ( !hINet )
{
;
}


hConnection = InternetConnect( hINet, "

http://www.google.com",

80, " "," ", INTERNET_SERVICE_HTTP, 0, 0 );


if ( !hConnection )
{
InternetCloseHandle(hINet);
return TRUE;
}

ERRORS:
adware error LNK2019: unresolved external symbol __imp__InternetCloseHandle@4 referenced in function _WinMain@16

adware error LNK2019: unresolved external symbol __imp__InternetConnectA@32 referenced in function _WinMain@16

adware error LNK2019: unresolved external symbol __imp__InternetOpenA@20 referenced in function _WinMain@16

does anyone know how i can fix this?
thanks a lot

 

[ArkM]

All these WinInet functions are placed in wininet.lib import library. Is it added to your project?

 

[bobo12]

yes i already have #include <wininet.h> in my code but the problem still persists?

 

[ArkM]

It's not a header file problem because of you have linker errors. Add library to your project (see IDE help).