# sigc::bound_argument< const_reference_wrapper< T_wrapped > > Class Template Reference

bound_argument object for a bound argument that is passed by bind() or returned by bind_return() by const reference, specialized for const reference_wrapper<> types. More...

`#include <sigc++/adaptors/bound_argument.h>`

List of all members.

## Public Member Functions
| bound_argument (const const_reference_wrapper< T_wrapped >& _A_argument)
| Constructor.
const const_limit_reference < T_wrapped >& | visit () const
| Retrieve the entity to visit in visit_each().
const T_wrapped& | invoke ()
| Retrieve the entity to pass to the bound functor or return.

## Detailed Description

### template <class T_wrapped>
class sigc::bound_argument< const_reference_wrapper< T_wrapped > >

bound_argument object for a bound argument that is passed by bind() or returned by bind_return() by const reference, specialized for const reference_wrapper<> types.

- T_wrapped The type of the bound argument.

## Constructor & Destructor Documentation

template <class T_wrapped >

sigc::bound_argument< const_reference_wrapper< T_wrapped > >::bound_argument | ( | const const_reference_wrapper< T_wrapped >& | _A_argument | ) | `[inline]`

Constructor.

Parameters:

  | _A_argument | The argument to bind.

## Member Function Documentation

template <class T_wrapped >

const T_wrapped& sigc::bound_argument< const_reference_wrapper< T_wrapped > >::invoke | ( |  | ) | `[inline]`

Retrieve the entity to pass to the bound functor or return.

Returns:
  The bound argument.

template <class T_wrapped >

const const_limit_reference<T_wrapped>& sigc::bound_argument< const_reference_wrapper< T_wrapped > >::visit | ( |  | ) | const`[inline]`

Retrieve the entity to visit in visit_each().

Returns:
  The const_limited_reference to the bound argument.