undefined reference to GetAdaptersInfo@8

[remy06]

Hi all,

When I tried to build my test code,it prompts this error: undefined reference to GetAdaptersInfo@8 although I've included iphlpapi.h....

The following is my test code eg:

#include <QtCore/QCoreApplication>
#include <windows.h>
#include <iphlpapi.h>    
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
//#include <netcon.h> 
 
PIP_ADAPTER_INFO pAdapterInfo;
ULONG bufferLen;
 
int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);
 
	if( GetAdaptersInfo(pAdapterInfo, &bufferLen) != ERROR_SUCCESS )
	{
 
        }
 
    return a.exec();
}

#include <QtCore/QCoreApplication>
#include <windows.h>
#include <iphlpapi.h>    
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
//#include <netcon.h> 

PIP_ADAPTER_INFO pAdapterInfo;
ULONG bufferLen;

int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);
 
	if( GetAdaptersInfo(pAdapterInfo, &bufferLen) != ERROR_SUCCESS )
	{
           
        }

    return a.exec();
}

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Need some help with this...

Secondly,How do I include netcon.h and its required files for use in my application?I tried #include <netcon.h> but it says no such file or directory...

Thanks in advanced.

[spirit]

how this issue related with Qt?

[jpn]

You need to link against the library providing GetAdaptersInfo(). According to MSDN it's Iphlpapi.lib so try adding this to your .pro file:

win32:LIBS += -lIphlpap

win32:LIBS += -lIphlpap

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[wysota]

If you are using WinXP or later you should use a different function:

On Windows XP and later: Use the GetAdaptersAddresses function instead of GetAdaptersInfo.

By the way, if you're programming for windows using winapi, pasting the offending function in MSDN might be a better idea than seeking help on a forum dedicated to Qt

[remy06]

hi all,

thanks for the reply.The reason I posted here is because I felt the issue is trying to link the proper libraries required to do the work in Qt,which I've encountered many problems trying to do so.The error I've mentioned here could be because I did not link it properly.

Anyway,thanks to jpn I've included the link in my .pro file but I use libiphlpapi.a instead of Iphlpapi.lib since it is found in C:\Qt\2009.01\mingw\lib folder.I rebuild it and it works so far.

thanks wysota for the info I will check it out as well.

[jpn]

but I use libiphlpapi.a instead of Iphlpapi.lib

That's why I proposed using "-lIphlpap" since it should work for both cases.