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      std::wstring_convert

      From cppreference.com
      <cpp‎ |locale
       
       
       
      Localization library
       
       
      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)
      (deprecated in C++17)
      (removed in C++26)

      Class templatestd::wstring_convert performs conversions between byte stringstd::string and wide stringstd::basic_string<Elem>, using an individual code conversion facetCodecvt.std::wstring_convert assumes ownership of the conversion facet, and cannot use a facet managed by a locale.

      The standard facets suitable for use withstd::wstring_convert arestd::codecvt_utf8 for UTF-8/UCS-2 and UTF-8/UCS-4 conversions andstd::codecvt_utf8_utf16 for UTF-8/UTF-16 conversions.

      Contents

      [edit]Nested types

      Type Definition
      byte_stringstd::basic_string<char,std::char_traits<char>, Byte_alloc>
      wide_stringstd::basic_string<Elem,std::char_traits<Elem>, Wide_alloc>
      state_typetypename Codecvt::state_type
      int_typetypename wide_string::traits_type::int_type

      [edit]Data members

      Member Description
      byte_stringbyte_err_string the byte string to display on errors
      (exposition-only member object*)
      wide_stringwide_err_string the wide string to display on errors
      (exposition-only member object*)
      Codecvt*cvtptr a pointer to the allocated conversion object
      (exposition-only member object*)
      state_typecvtstate the conversion state object
      (exposition-only member object*)
      std::size_tcvtcount the conversion count
      (exposition-only member object*)

      [edit]Member functions

      constructs a newwstring_convert
      (public member function)[edit]
      operator=
      		 the copy assignment operator is deleted
      (public member function)
      destructs thewstring_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      		locale-defined multibyte
      (UTF-8, GB18030)      		UTF-8
      		UTF-16
      UTF-16mbrtoc16 /c16rtomb(with C11's DR488)

      codecvt<char16_t,char,mbstate_t>
      codecvt_utf8_utf16<char16_t>
      codecvt_utf8_utf16<char32_t>
      codecvt_utf8_utf16<wchar_t>

      		N/A
      UCS-2c16rtomb(without C11's DR488)codecvt_utf8<char16_t>codecvt_utf16<char16_t>
      UTF-32

      mbrtoc32 /c32rtomb

      codecvt<char32_t,char,mbstate_t>
      codecvt_utf8<char32_t>

      codecvt_utf16<char32_t>

      systemwchar_t:

      UTF-32(non-Windows)
      UCS-2(Windows)

      mbsrtowcs /wcsrtombs
      use_facet<codecvt
      <wchar_t,char,mbstate_t>>(locale)

      		codecvt_utf8<wchar_t>codecvt_utf16<wchar_t>
      (C++11)(deprecated in C++17)(removed in C++26)
      		 performs conversion between a byte stream buffer and a wide stream buffer
      (class template)[edit]
      (C++11)(deprecated in C++17)(removed in C++26)
      		 converts between UTF-8 and UCS-2/UCS-4
      (class template)[edit]
      (C++11)(deprecated in C++17)(removed in C++26)
      		 converts between UTF-8 and UTF-16
      (class template)[edit]
      Retrieved from "https://en.cppreference.com/mwiki/index.php?title=cpp/locale/wstring_convert&oldid=177197"
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