Question

I’m using boost::signals2 library and here is the simple code:

boost::signals2<void ()> sig;
class Foo {
   void Slot() {}
};

Foo obj;
sig.connect( boost.bind(&Foo::Slot, &obj) );

Everything works well. But now I want my signal to pass some data in arguments:

boost::signals2<void (std::vector<float>)> sig2;
class Foo {
   void Slot2(std::vector<float>) {}
};

What is the right way to bind Slot2 to signal again?

Here is the error: http://dpaste.com/752076/ when I use same connect&binding code.

Answer 1

You need to use a placeholder:

sig.connect( boost::bind(&Foo::Slot, &obj, _1) );