typedef PK_ERROR_code_t (*PK_ERROR_handler_f_t)( PK_ERROR_sf_t * );

struct PK_ERROR_frustrum_s
    {
    PK_ERROR_handler_f_t handler_fn;
    };
typedef struct PK_ERROR_frustrum_s PK_ERROR_frustrum_t;




This data structure holds a pointer to the error handling function the
application wishes to register with the PK using PK_ERROR_register_callbacks.


The handler must be a function which receives a standard error structure
and returns an error_code.