Re: [Boost-users] [statechart] using events for passing information

From: Christian Bähnisch (christian-baehnisch_at_[hidden])
Date: 2007-08-17 10:17:24

> There is a to-do item (no. 2) for this:
>
> <http://www.boost.org/libs/statechart/doc/future_and_history.html#ToDoList>
>
> Please let me know whether that would cover what you need.

This is exactly what I want! I would make heavy use of this feature but know 
after reading your comment on this point I'm not sure if this is a good idea 
and if I should do a redesign.

On Thursday 16 August 2007 19:30:42 Andreas Huber wrote:
> Hi Christian
>
> > I wonder if it is possible to use events for passing in data to
> > states.
>
> Yes, it is. You can define a transition action, which receives the
> triggering event as a parameter. Problem is, the UML standard mandates that
> the transition action is executed when all states of the origin state
> configuration have been left and before any of the states of the
> destination configuration are entered. Only the innermost common context or
> any of its contexts can therefore store the event data.
>
> > I even cannot find some hints in the statechart
> > documentation how to determine in some state which event caused a
> > transistion to the this state!
>
> There is a to-do item (no. 2) for this:
>
> <http://www.boost.org/libs/statechart/doc/future_and_history.html#ToDoList>
>
> Please let me know whether that would cover what you need.
>
> Thanks,