Serena Fritsch wrote:
Hi All,
Apologies if there are multiple psoting of this message.
I want to use the boost::statechart library. However i encountered a
small problem with using the orthogonal regions. In the statechart
tutorial, every class declaration is put into one file, however i
would like to put each class declaration into separate files.
[code & error snipped]
The ultimate problem lies in in Main.cpp (received by private email):
#include "Machine.h"
#include "C.h"
#include <iostream>
namespace sc = boost::statechart;
int main(){
Machine machine;
machine.initiate();
machine.displayStateConfiguration(machine);
return 0;
}
At the point of initiate() only one part of the initial state
configuration is known (C and A). B is missing (which MSVC duly reports
with an appropriate error message). Adding the following include to
Main.cpp solves the problem:
#include "B.h"
For more information please see:
http://www.boost-consulting.com/boost/libs/statechart/doc/faq.html#HideInner...
This item says that the *initial state* must be known at the point of
calling initiate() but it should more correctly say that the *initial
state configuration* must be known at the point where initiate is
called. That is, in addition to the state passed as InitialState to
state_machine, all its direct and indirect inner states must also be
known. There are ways to enhance encapsulation by means of
custom_reactions (which probably need to be triggered by posting
internal events in your case), please see:
http://www.boost-consulting.com/boost/libs/statechart/doc/tutorial.html#Spre...
HTH,
--
Andreas Huber
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