Re: [Boost-users] boost::statechart "custom::reaction"

Subject: Re: [Boost-users] boost::statechart "custom::reaction"
From: Slava (Viatcheslav.Sysoltsev_at_[hidden])
Date: 2013-11-04 08:37:13

On Mon, 04 Nov 2013 14:08:01 +0100, rahul baruah <rahul03baruah_at_[hidden]>  
wrote:

> I am using boost::statechart. Instead of simple_state , using boost::
> statechart::state.
> Now i am able to access the state_machine member variable. but when i am
> using custom::reaction or mpl::list it throught error.
> Code Snippet:
>
> struct NotReady : StateBase< NotReady, TopState >
> {
>   //typedef NotReadyStateList reactions;
>   NotReady (my_context ctx) : my_base( ctx ){
>   outermost_context().maxPairedDevices = 3;
>   cout << outermost_context().maxPairedDevices << endl;
>   }
>
>   template< class MostDerived >
>   sc::result react( const PairingBaseEvents< MostDerived > & );
> public:
>   typedef sc::custom_reaction< StartEvent > reactions;
> };
>
> Error:
> ndefined reference to `boost::statechart::detail::safe_reaction_result
> NotReady::react<StartEvent>(PairingBaseEvents<StartEvent> const&)'
>

As it seems your compiler cannot match your react() signature against an  
expected one. Without complete compiling example it is hard to predict why.

Regards, Slava