How to use an object of the @class type in C++

[Carnë Draug]

Hi

if I pass an object from the @class type (such as FTP), how could I
use it my oct file? I suppose I have to somehow get an octave_class
object from an octave_value but how? I don't see any appropriate
method. I can get its correct name with class_name() but I don't know
how to actually use the class methods.

In my particular example, I have a strel object and would like to use
the getsequence, getheight, and getnhood.

Carnë