Using SNMP to extract the MAC Address in Builder 6

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3 total messages Started by Richard Tue, 24 Aug 2004 10:07

#5371

Author: Richard
Date: Tue, 24 Aug 2004 10:07

6 lines
1320 bytes

 In the article http://bdn.borland.com/article/0,1410,26040,00.html 3 methods of how to obtain the MAC addresses of NICs are described. The third method uses SNMP and seems to work perfectly with Builder 5, but I cannot get it to work with Builder 6. The program compiles and runs, but does not report any NICs present. Exceptions are also thrown as the routine crashes due to no NICs.

Any help would be greatly appreciated.

Thanks, Richard

Re: Using SNMP to extract the MAC Address in Builder 6

#5372

Author: Mark Jacobs
Date: Tue, 24 Aug 2004 10:38

49 lines
2413 bytes

On 24 Aug 2004 03:07:02 -0700, Richard <Richard.Gallois@footfall.com>  
wrote:

> In the article http://bdn.borland.com/article/0,1410,26040,00.html 3  
> methods of how to obtain the MAC addresses of NICs are
> described. The third method uses SNMP and seems to work perfectly with  
> Builder 5, but I cannot get it to work with Builder 6. The
> program compiles and runs, but does not report any NICs present.  
> Exceptions are also thrown as the routine crashes due to no NICs.

AnsiString mjgetnicinfo()
{
   IP_ADAPTER_INFO AdapterInfo[16]; AnsiString retv=""; unsigned int ii;  
DWORD dwBufLen,dwStatus;
   dwBufLen=sizeof(AdapterInfo);  
dwStatus=GetAdaptersInfo(AdapterInfo,&dwBufLen);
   if (dwStatus!=ERROR_SUCCESS) return "**Could not Obtain NIC Info";
   PIP_ADAPTER_INFO pAdapterInfo=AdapterInfo;
   do
   {
     retv+="Name :"+AnsiString(pAdapterInfo->AdapterName)+"\r\nDescription  
:"+
           AnsiString(pAdapterInfo->Description)+"\r\nMAC :";
     for (ii=0;ii<pAdapterInfo->AddressLength;++ii)  
retv+=IntToHex(pAdapterInfo->Address[ii],2)+" ";
     retv+="\r\n"; pAdapterInfo=pAdapterInfo->Next;
   }
   while (pAdapterInfo);
   return retv;
}

Does the routine above work? Hope it helps.
-- 
Mark Jacobs
DK Computing
http://www.dkcomputing.co.uk
markj atty critical dotty co dotty uk

Re: Using SNMP to extract the MAC Address in Builder 6

#5374

Author: Richard
Date: Tue, 24 Aug 2004 11:14

58 lines
2619 bytes

Many thanks Mark. Your code works perfecly on BCB6/WinXP. I
was not aware of all the great functions available in 
IPHLPAPI.lib. I definitely will not be playing with the
unbelievably complicated SNMP API again.

Richard

"Mark Jacobs" <markjattycriticaldottycodottyuk> wrote:
>On 24 Aug 2004 03:07:02 -0700, Richard <Richard.Gallois@footfall.com>  =
>
>wrote:
>
>> In the article http://bdn.borland.com/article/0,1410,26040,00.html 3  =
>
>> methods of how to obtain the MAC addresses of NICs are
>> described. The third method uses SNMP and seems to work perfectly with=
>  =
>
>> Builder 5, but I cannot get it to work with Builder 6. The
>> program compiles and runs, but does not report any NICs present.  =
>
>> Exceptions are also thrown as the routine crashes due to no NICs.
>
>AnsiString mjgetnicinfo()
>{
>   IP_ADAPTER_INFO AdapterInfo[16]; AnsiString retv=3D""; unsigned int i=
>i;  =
>
>DWORD dwBufLen,dwStatus;
>   dwBufLen=3Dsizeof(AdapterInfo);  =
>
>dwStatus=3DGetAdaptersInfo(AdapterInfo,&dwBufLen);
>   if (dwStatus!=3DERROR_SUCCESS) return "**Could not Obtain NIC Info";
>   PIP_ADAPTER_INFO pAdapterInfo=3DAdapterInfo;
>   do
>   {
>     retv+=3D"Name :"+AnsiString(pAdapterInfo->AdapterName)+"\r\nDescrip=
>tion  =
>
>:"+
>           AnsiString(pAdapterInfo->Description)+"\r\nMAC :";
>     for (ii=3D0;ii<pAdapterInfo->AddressLength;++ii)  =
>
>retv+=3DIntToHex(pAdapterInfo->Address[ii],2)+" ";
>     retv+=3D"\r\n"; pAdapterInfo=3DpAdapterInfo->Next;
>   }
>   while (pAdapterInfo);
>   return retv;
>}
>
>Does the routine above work? Hope it helps.
>-- =
>
>Mark Jacobs
>DK Computing
>http://www.dkcomputing.co.uk
>markj atty critical dotty co dotty uk

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