Thread: Problem using boost::signals2

Hello all,

I'm using boost::signals2 on my application.

When I try to make a connection between a signal and a slot, both taking the same arguments. I get a compilation error.

I reduced the code to a mininum reproducible example:

Code:

#include <boost/signals2.hpp>
class dest {
public:
    dest() {}
    ~dest() {}
    
    void pslot(int *x , int i) {
        *x += i;
    }
};

class caller {
private:
    dest *pd;
public:
    caller() {}
    ~caller() { }
    
    boost::signals2::signal<void(int * , int)> sigEv;
    
    void init() {
        pd = new dest;
        sigEv.connect( boost::bind(&dest::pslot,pd) ); // <--- this line triggers the error
    }
    
};

This is the error I get, instantiated from the line that I indicate in the comment.

target/usr/include/boost/bind/mem_fn.hpp:342: error: invalid use of non-static member function

This is probably some silly error but I can't figure it out.

Can anyone help me?
Many thanks!
--to

Originally Posted by Codeplug

Boost: bind.hpp documentation
Tutorial

I would try "boost::bind(&dest:slot, pd, _1, _2)"

gg

Thanks, that solved it!

Cheers,
--to