Re: Newbie: Problem with Signals

From: Ray (get_rayman_at_[hidden])
Date: 2003-05-19 10:49:46

--- In Boost-Users_at_[hidden], "Peter Dimov" <pdimov_at_m...> 
wrote:
> Ray wrote:
> > I am having some problems with boost::signals version 1_30_0 on 
XP,
> > compiled and linked using VC6.
> >
> > I am building a timer mechanism, similar to that with Qt.
> > A user instanciates a timer with some millisecond value, starts 
the
> > timer via t.Start(), and then enters the event loop (or in most
> > cases, returns from a function call by the event loop).
> >
> > Timer definition:
> >
> > class Timer  {
> >   typedef boost::signal1<void, int> TimerSignalType;
> >   typedef TimerSignalType::slot_type   TimerSlotType;
> > public:
> >   boost::signals::connection TimerConnect(const TimerSlotType& 
slot )
> >   { return OnRing.connect( slot ); }
> >   Timer();
> >   Timer( const Timer& );
> >   Timer( unsigned long millesecInterval, TimerType t = 
Continous );
> >   ~Timer();
> >
> >   void Start();
> >
> >   void           Ring() {OnRing( myId );}
> >
> > private:
> >
> >   TimerSignalType OnRing;
> >   int              myId;
> > };
> >
> > void Rang( int i )
> > {
> >    cout << "Received timer " << endl;
> > }
> >
> > main()
> > {
> >   EventLoop *eventLoop = EventLoop::Instance();
> >   Timer t1( 3000, Continous );
> >   t1.TimerConnect( boost::bind( Rang, _1) );
> >   t1.Start();
> >   eventLoop->Exec();
> > }
> >
> > eventLoop->Exec() start an event loop.
> > The code always crashes when atteping to execute the connected
> > function.
> >
> > What am I doing wrong?
> 
> I see nothing wrong with the code you posted. When I added the 
necessary
> stub definitions it compiled and ran fine.

Hmm.. Then it must be a dll problem. Maybe the dll I am linking 
against is not compatible with the other MS dll in my build. 
So then, this turns into a build issue.