[Boost-users] [statechart] Getting state information into the machine

From: Commander Pirx (CmdPirx_at_[hidden])
Date: 2008-03-03 05:56:17

I'm using the Statechart Library in conjunction with the really exciting 
Asio Library to set up a communication server. There is a very helpful 
documentation of the Statechart Library too. But one topic is puzzling me: 
How to to get data into the state machine?

Here is an simple example: Each session object of the server has two states: 
signed-off and authorized. Receiving a login event leads to a transition to 
the authorized state. Thats pretty easy. But the login data (stored in the 
login event) got lost. I can hold this data in the state machine itself 
(outermost_context()). Or I can use a pseudo event to forward this data to 
the authorized state. But I'm looking for a nifty way to avoid this 
overhead. I like this concept of state-local storage very much. But I'm not 
shure about how to use it.