🚀 go-pugleaf

Thanks Ed, i had a couple of goes at reading the description
for this...now it makes sense :-) cheers derek 

"Ed Mulroy [TeamB]" <dont_email_me@bitbuc.ket> wrote:
>If you look at the docs on that function one of the reasons for the invalid
>parameter return value is for the situation where you do not own the memory
>at the address given.  By convention your program does not own the NULL
>address, it is an invalid addres, so the error makes sense.  Put the address
>of something in there.  Here is an example I ran just to illustrate:
>
>  ------------------
>  C:\Documents and Settings\Administrator\My Documents\Lookat\Temp
>  >type temp5.cpp
>
>  #include <windows.h>
>  #include <iphlpapi.h>
>  #include <stdio.h>
>
>  const char *GetReason(DWORD val)
>    {
>    char *msg;
>
>    switch (val)
>      {
>      case ERROR_BUFFER_OVERFLOW :
>        msg = "ERROR_BUFFER_OVERFLOW";
>        break;
>      case ERROR_INVALID_PARAMETER :
>        msg = "ERROR_INVALID_PARAMETER";
>        break;
>      default :
>        msg = "Other message";
>        break;
>      }
>
>    return msg;
>    }
>
>  int main()
>    {
>    unsigned long ulAdapterSize=0;
>
>    DWORD result = GetAdaptersInfo(NULL, &ulAdapterSize);
>
>    printf("NULL gives %s\n", GetReason(result));
>
>    char c;
>
>    result = GetAdaptersInfo((PIP_ADAPTER_INFO) &c, &ulAdapterSize);
>    printf("&char gives %s\n", GetReason(result));
>
>    return 0;
>    }
>
>  C:\Documents and Settings\Administrator\My Documents\Lookat\Temp
>  >ver
>
>  Microsoft Windows XP [Version 5.1.2600]
>
>  C:\Documents and Settings\Administrator\My Documents\Lookat\Temp
>  >temp5
>  NULL gives ERROR_BUFFER_OVERFLOW
>  &char gives ERROR_INVALID_PARAMETER
>
>  C:\Documents and Settings\Administrator\My Documents\Lookat\Temp
>  >
>  ------------------
>
>.  Ed
>
>> derek wrote in message
>> news:40237638$1@newsgroups.borland.com...
>>
>> Does any one know why the call to GetAdaptersInfo returns:
>>
>> ERROR_BUFFER_OVERFLOW on my Win2k machine...but
>> ERROR_INVALID_PARAMETER on an XP machine?
>>
>> I'm using CB5 pro on both machines.
>>
>> ULONG ulAdapterSize=0;
>>
>> if(GetAdaptersInfo(NULL, &ulAdapterSize) ==
>>  ERROR_BUFFER_OVERFLOW)
>> {
>> <--SNIP-->
>
>