Re: [Boost-users] [statechart] using the same event handler in multiplestates.

From: Andreas Huber (ahd6974-spamboostorgtrap_at_[hidden])
Date: 2008-04-29 19:23:17

Hi Paul

> I'm trying to implement a state machine using the boost statechart
> library. It has 3 main states (call them "State 1", "State 2", and
> "State 3") and 3 classes of events ("Class 1", "Class 2", and
> "Class 3").
> State 1 should have event handlers for all Class 1 events. State
> 2 should have handlers for Class 1 and 2 events. State 3 should
> have handlers for Class 1, 2, and 3 events.

> The handling of each class of events is essentially the same
> regardless of what state the machine is in.

It sounds like you should put state 2 & state 3 in an outer state A. Then 
put state A and State 1 into an outer state B. Let state B handle class 1 
events and let state A handle class 2 events. Finally, let state 3 handle 
class 3 events.

HTH,

-- 
Andreas Huber
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