From: JSW <jsw@...>
Date: 2005-11-05T07:22:09+09:00
Subject: Re: In an extension, doing a Data_Make_Struct and getting value back

A snippet  of the code around the Get and Make parts:
.....
    SQLHANDLE hDb;
    VALUE retVal;
    handle  hCon;
    VALUE conRet;
    sConnect *sC;

    conRet = Data_Make_Struct(cDB2Conn, sConnect, 0, free, sC);
    sC->connection = hDb;
    return conRet;

and the later part where it's used:

    handle *hCon;
    Data_Get_Struct( conHandle, handle, hCon );

This is where it fails with "incorrect class - Data expected"

Does this give anyone an additional thought?

Scott Walton


"Phil Tomson" <ptkwt@aracnet.com> wrote in message 
news:dkeqlq018mr@enews2.newsguy.com...
> In article <Gczaf.1562$p37.1202@newssvr17.news.prodigy.com>,
> JSW <jsw@abc.com> wrote:
>>I have done Data_Make_Struct(klass, c-type, 0, free(), c_var*) and now I
>>want to get the data back so I do a Data_Get_Struct( ruby_Var, c-type,
>>c_var*) and it says that its the wrong type  it's "klass" and should be
>>"Data".
>>
>>I know I'm missing a very important (probably simple) step here, but I 
>>can't
>>figure out what it is.
>>
>>Anyone have a clue?
>>
>
> Could you post the actual code?
>
> I notice above that you have:
> Data_Make_Struct(klass, c-type, 0, free(), c_var*)
>
> Whereas the pickaxe says it should be:
>  Data_Make_Struct(klass, c-type, 0, free(), c_type*)
>
> Not sure if that's an issue or not...
>
> Phil