Re: [Swig-user] Vector of object pointers

[Marcelo M. <mm...@ac...>]

Did you include the class declaration before the template directive?, ie:


%include "std_vector.i"

%{
#include "Object.h"
%}
%include "Object.h"

%template(ObjectVector) std::vector<Object *>;


Marcelo

Dave Dribin wrote:

> I've got an API that returns a vector of object pointers:
>
>   std::vector<Object *> getObjects();
>
> I'm trying to get this to work in C#, Ruby, Perl, and Python, but I'm  
> having quite some difficulty.  I am using std_vector.i:
>
>   %include "std_vector.i"
>   %template(ObjectVector) std::vector<Object *>;
>
> However, the Ruby wrapper generates a compiler error similar to:
>
>   error: no matching function for call to 'Object::Object(Object*&)'
>
> And if I try C#, I can compile the wrapper, but then ObjectVector.cs  
> fails to compile with an error like:
>
>   ObjectVector.cs(59,17): error CS0208: Cannot take the address of,  
> get the size of, or declare a pointer to a managed type `Object'
>
> The generated C# code is:
>
>   public Object * this[int index]  { ... }
>
> So, clearly, I've hit a use case that causes problems.  Is there a  
> technical reason why a vector of object pointers is difficult?  Or  
> are the typemaps just in need of work in this area?  Hopefully it's  
> the latter, so I can try and work out the issues.
>
> Thanks,
>
> -Dave
>
>
>
>
>
>
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