Re: Some help for a C++ guy

[Matthew Heaney <matthewjheaney@earthlink.net>]

defaultuserbr@yahoo.com writes:

> To tell the truth, there probably should be some sort of parameter.
> Each message has a unique message ID that really should be carried in
> the package/class/whatever.

Can you move the state data into the handler?

package P is

   type Handler_Type is abstract tagged limited null record;

   procedure Process_Status
     (Handler : in out Handler_Type;
      Status  : in     Status_Type) is abstract;

   procedure Register (Handler : in Handler_Type);

...
end P;

Clients derive from Handler_Type and add state as necessary.