[Ecls-list] How to wrap and return constant pointers with c-inline?

[Dietrich Bollmann]

On Sun, Jul 7, 2013 at 9:48 PM, ... <. <enerccio at gmail.com>..> wrote:

> Why cant you just cast it in the inline part? (void*) comes to mind...
>

Because I thought that it is not possible to "cast away" a const
qualification...

...But you are completely right:  even if this might not be a good thing to
do under normal circumstances, it actually is possible and solves the
problem :)

Thanks for the advice!

Dietrich



On Sun, Jul 7, 2013 at 8:52 PM, Dietrich Bollmann <dietrich at formgames.org>wrote:

> Hi,
>
> How can I wrap and return the constant pointer
>
>   const CRhinoCommandContext *context;
>
> with c-inline?
>
> Using something like
>
>   (ffi:c-inline () () :pointer-void "context" :one-liner t)
>
> results in the error
>
>   error C2664: 'ecl_make_foreign_data' : cannot convert parameter 3 from
> 'const CRhinoCommandContext *' to 'void *'
>         Conversion loses qualifiers
>
> But I couldn't find something like :const-pointer-void...
>
> How can I solve this problem?
>
> Thanks,
>
> Dietrich
>
>
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