hey you can use pointer functions in c data structures

[Jonm1]

a pointer function holds the value of a function

you can do

#include <stdlib.h>
#include <stdio.h>


struct win{
};

struct api{
};
struct Windows{
  struct api (*pfunc)(struct api,int);
};

and in cpp you can include classes in pointer function arguments/definitons

hope this helps!

can work excellently in messaging, you can hold the value of something like a form and follow it with attributes