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class template

std::messages

template <class charT> class messages;

Facet to access message catalogs

locale::facetmessages_base
messages

The messages standard facet is used to read individual strings from a message catalog.

The specifics on how messages are organized in a catalog depend on the library implementation.

The messages class template has a protected destructor: Programs shall only construct objects of derived classes, or use those installed in locale objects (through use_facet).

All standard locale objects support at least the following facet instantiations of the messages class template as part of the messages category:

facets in `locale` objects	description
`messages<char>`	narrow characters
`messages<wchar_t>`	wide characters

Template parameters

charT: Character type.
This is the type of characters for the returned messages.
Aliased as member char_type.

Member types

member type	definition	description
`char_type`	The template parameter (`charT`)	Character type
`string_type`	`basic_string<charT>`	The `basic_string` instantiation for characters of type `charT` (such as `string` for `char`).

The class also inherits the catalog type from messages_base. This type is a mere alias (typedef) of a signed integer type.

Member constants

The class contains a public static constant of type locale::id that uniquely identifies facets with money_put semantics.

Public member functions

(constructor): messages constructor (public member function)

open: Open message catalog (public member function)

get: Get message from catalog (public member function)

close: Closse message catalog (public member function)

Virtual protected member functionss

The class defines the virtual protected members which implement the behavior by default of their respective public member functions:

do_open: Open message catalog [virtual] (protected virtual member function)

do_get: Get message from catalog [virtual] (protected virtual member function)

do_close: Close message catalog (protected virtual member function)

Along with the class destructor:

(destructor): messages destructor (protected member function)

Specializations

At least the following specializations of this template are provided in all library implementations:

specialization
`messages<char>`
`messages<wchar_t>`

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functions

standard facets

public member functions