Boost Users :
Subject: Re: [Boost-users] [signals] References rather than copies of functors in slots
From: Steven Watanabe (watanabesj_at_[hidden])
Date: 2009-05-14 13:26:51
James C.Sutherland wrote:
> It appears that when a slot is attached to a signal it is copied in.
> However, if the slot contains a functor, and I want to modify the
> contents of the functor object, then those changes are not made in the
> slot since it is a copy of the original object.
> This is probably a really simple question, but how do tell a signal to
> hold references/pointers to slot objects rather than copies? Is there
> a trick with boost::shared_ptr or something?
Using boost::ref should work.
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