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    std::wstring_convert::wstring_convert

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    <metanoindex/>

     
    C++
     
    Localizzazioni libreria
    Impostazioni internazionali e sfaccettature
    Original:
    Locales and facets
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    locale
    Carattere classificazione
    Original:
    Character classification
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    Conversioni
    Original:
    Conversions
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    Facet categoria classi di base
    Original:
    Facet category base classes
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    Facet categorie
    Original:
    Facet categories
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    Locale specifici aspetti
    Original:
    Locale-specific facets
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    Codice di conversione sfaccettature
    Original:
    Code conversion facets
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    codecvt_utf8(C++11)
    codecvt_utf16(C++11)
    C locale
    Original:
    C locale
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    std::wstring_convert
    Membri funzioni
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    Member functions
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    wstring_convert::wstring_convert
    wstring_convert::~wstring_convert
    wstring_convert::from_bytes
    wstring_convert::to_bytes
    wstring_convert::converted
    wstring_convert::state
     
    <tbody> </tbody>
    wstring_convert( Codecvt* pcvt = new Codecvt );
    		 (1)
    wstring_convert( Codecvt* pcvt, state_type state);
    		 (2)
    wstring_convert( const byte_string& byte_err, const wide_string& wide_err = wide_string() );
    		 (3)

    1)

    Costruisce l'oggetto wstring_convert con una sfaccettatura di conversione specificato, utilizzando i valori di default-costruiti per lo stato del cambio e le stringhe di errore
    Original:
    Constructs the wstring_convert object with a specified conversion facet, using default-constructed values for the shift state and the error strings
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    2)

    Costruisce l'oggetto wstring_convert con un aspetto di conversione specificato e stato di spostamento specificato, utilizzando di default-costruiti i valori per le stringhe di errore
    Original:
    Constructs the wstring_convert object with a specified conversion facet and specified shift state, using default-constructed values for the error strings
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    3)

    Costruisce l'oggetto wstring_convert con stringhe di errore specificati, utilizzando new Codecvt come la faccetta conversione e di default costruito state_type come stato del cambio.
    Original:
    Constructs the wstring_convert object with specified error strings, using new Codecvt as the conversion facet and the default-constructed state_type as shift state.
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    Parametri

    pcvt -
    puntatore alla faccetta Codecvt conversione di tipo
    Original:
    pointer to the conversion facet of type Codecvt
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    state -
    valore iniziale dello stato spostamento di conversione
    Original:
    initial value of the conversion shift state
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    byte_err -
    stringa stretta per visualizzare in caso di errori
    Original:
    narrow string to display on errors
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    wide_err -
    stringa ampio per visualizzare in caso di errori
    Original:
    wide string to display on errors
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    Esempio

    #include <locale>
#include <utility>
#include <codecvt>

// utility wrapper to adapt locale-bound facets for wstring/wbuffer convert
template<class Facet>
struct deletable_facet : Facet
{
    template<class ...Args>
    deletable_facet(Args&& ...args) : Facet(std::forward<Args>(args)...) {}
    ~deletable_facet() {}
};

int main()
{
    // UTF-16le / UCS4 conversion
    std::wstring_convert<std::codecvt_utf16<char32_t, 0x10ffff, std::little_endian>> u16to32;

    // UTF-8 / wide string conversion with custom messages
    std::wstring_convert<std::codecvt_utf8<wchar_t>> u8towide("Error!", L"Error!");

    // GB18030 / wide string conversion facet
    typedef deletable_facet<std::codecvt_byname<wchar_t, char, std::mbstate_t>> F;
    std::wstring_convert<F> gbtowide(new F("zh_CN.gb18030"));
}