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std::wstring_convert

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Defined in header <locale>
template< class Codecvt,

          class Elem = wchar_t,
          class Wide_alloc = std::allocator<Elem>,
          class Byte_alloc = std::allocator<char> >

class wstring_convert;
(since C++11)

Class template std::wstring_convert performs conversions between byte string std::string and wide string std::basic_string<Elem>, using an individual code conversion facet Codecvt. std::wstring_convert assumes ownership of the conversion facet, and cannot use a facet managed by a locale. The standard facets suitable for use with std::wstring_convert are std::codecvt_utf8 for UTF-8/UCS2 and UTF-8/UCS4 conversions and std::codecvt_utf8_utf16 for UTF-8/UTF-16 conversions.

[edit] Member types

Member type Definition
byte_string std::basic_string<char, char_traits<char>, Byte_alloc>
wide_string std::basic_string<Elem, char_traits<Elem>, Wide_alloc>
state_type Codecvt::state_type
int_type wide_string::traits_type::int_type

[edit] Member functions

constructs a new wstring_convert
(public member function) [edit]
operator=
the copy assignment operator is deleted
(public member function)
destructs the wstring_convert and its conversion facet
(public member function) [edit]
converts a byte string into a wide string
(public member function) [edit]
converts a wide string into a byte string
(public member function) [edit]
returns the number of characters successfully converted
(public member function) [edit]
returns the current conversion state
(public member function) [edit]

[edit] See also

Character
conversions
narrow multibyte
(char)
UTF-8
(char)
UTF-16
(char16_t)
UTF-16 mbrtoc16 / c16rtomb codecvt<char16_t, char, mbstate_t>
codecvt_utf8_utf16<char16_t>
codecvt_utf8_utf16<char32_t>
codecvt_utf8_utf16<wchar_t>
N/A
UCS2 No codecvt_utf8<char16_t> codecvt_utf16<char16_t>
UTF-32/UCS4
(char32_t)
mbrtoc32 / c32rtomb codecvt<char32_t, char, mbstate_t>
codecvt_utf8<char32_t>
codecvt_utf16<char32_t>
UCS2/UCS4
(wchar_t)
No codecvt_utf8<wchar_t> codecvt_utf16<wchar_t>
wide
(wchar_t)
codecvt<wchar_t, char, mbstate_t>
mbsrtowcs / wcsrtombs
No No
performs conversion between a byte stream buffer and a wide stream buffer
(class template) [edit]
converts between UTF-8 and UCS2/UCS4
(class template) [edit]
converts between UTF-8 and UTF-16
(class template) [edit]