[C++-sig] [Boost.Python] Wrapping C library functions

[Stefan Seefeld]

On 02/14/2010 07:32 PM, TP wrote:
> Suppose I am attempting to use a C (not C++) library that has an .h 
> file with things like this:
>
>  extern PIX * pixCreate ( l_int32 width, l_int32 height, l_int32 depth );
>  extern void pixDestroy ( PIX **ppix );
>
>  extern PIX * pixClone ( PIX *pixs );
>  extern PIX * pixCopy ( PIX *pixd, PIX *pixs );
>
> Is it possible to use Boost.Python to wrap such functions?

Yes. Do you have the definition of PIX available ? In that case, you 
could use that via class_<PIX>....
Otherwise, you may want to create a tiny wrapper class for it, such as

class PIXWrapper
{
public:
   PIXWrapper(I_int32 w, I_int32 h, I_int32 d) : pix_(pixCreate(w, h, d) {}
  ~PIXWrapper() { pixDestroy(&pix_);}
  ...
private:
   PIX *pix_;
};

and then use that in the way described in the docs.

HTH,
         Stefan

-- 

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