Hello, I try to understand how boost::statechart work - so I have some questions. If the FSM implements a communication protocol how does the FSM interact with the environment? 1. Problem: How to passing callback-functions to the FSM? * The callback should be invoked if the FSM is in a certain state and some conditions are met. * Do I have to pass the callback(s) with an event which has to be injected to the FSM from outside and store them in a given state? 2. Problem: How to pass initialization parameter into the FSM? * Some states need to be initialized with parameters (for instance host and port in order to create a socket). * Do I Have to pass the parameters via injected events? 3. Problem: How to pass data between several states in an FSM? * Same as Problem 2? With best regards, Oliver