explicit wstring_convert( Codecvt* pcvt = new Codecvt ); | (1) | |
wstring_convert( Codecvt* pcvt, state_type state); | (2) | |
explicit wstring_convert( const byte_string& byte_err,
const wide_string& wide_err = wide_string() ); | (3) | |
wstring_convert(const std::wstring_convert&) = delete; | (4) | (since C++14) |
1) Constructs the
wstring_convert object with a specified conversion facet, using default-constructed values for the shift state and the error strings 2) Constructs the
wstring_convert object with a specified conversion facet and specified shift state, using default-constructed values for the error strings 3) 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. 4) The copy constructor is deleted, wstring_convert is not
CopyConstructible Parameters
| pcvt | - | pointer to the conversion facet of type Codecvt (behavior is undefined if this pointer is null) |
| state | - | initial value of the conversion shift state |
| byte_err | - | narrow string to display on errors |
| wide_err | - | wide string to display on errors |
Example
#include <locale>
#include <utility>
#include <codecvt>
// utility wrapper to adapt locale-bound facets for wstring/wbuffer convert
template<class Facet>
struct deletable_facet : Facet
{
using Facet::Facet; // inherit constructors
~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"));
}
Please login to continue.