hchriz

As I am new in the field of programming externals for Max, I have crawled for a week the web to find a solution to the entitled problem, but no luck :-(

More specifically, I have a main .c file for my external that makes use of various other .cpp files and libraries. For that reason I want to compile it as a .cpp file. As far as I know, there shouldn't be a problem with that. However, when I am trying to compile it in Visual Studio I get the following error:

"error C2664: 't_object *object_alloc(t_object *,const char *,...)' : cannot convert argument 1 from 'void *' to 't_object *' "

There are many topics related to "error C2664: cannot convert parameter 1 from 'X' to 'X'" but none of the proposed solutions was suitable for my case, since it seems to be a specific t_object issue.

I am using the latest Max 6, 32bit version.

vs-2013-error-c2664-when-trying-to-compile-a-c-file-as-cpp

it would probably work more to encapsulate your c code in a .cpp ? with a

it would probably work more to encapsulate your c code in a .cpp ? with aextern "C"
at the beginning ?


Thanks Vichug, but this did not work. Sorry for the late reply but I was trying to find a solution.

Fortunately this came a lot easier than I initially supposed :-). I found it in the Max/Msp 6 API documentation and I am posting it just for the record. Thanks again.

It was all about the initialization routine. Taking the instructions that can be found in the API document p.10, paragraph 3.3, I changed the declaration of the t_class to:

instead of the previous existed declaration:

It was all about the initialization routine. Taking the instructions that can be found in the API document p.10, paragraph 3.3, I changed the declaration of the t_class to:static t_class *this_class;

instead of the previous existed declaration:void *this_class;


VS 2013 error C2664 when trying to compile a .c file as .cpp