## wxEncodingConverter

This class is capable of converting strings between any two 8-bit encodings/charsets. It can also convert from/to Unicode (but only if you compiled wxWindows with wxUSE_WCHAR_T set to 1).

Derived from

wxObject

Include files

<wx/encconv.h>

See also

wxFontMapper, wxMBConv, Writing non-English applications

Members

wxEncodingConverter::wxEncodingConverter
wxEncodingConverter::Init
wxEncodingConverter::Convert
wxEncodingConverter::GetPlatformEquivalents
wxEncodingConverter::GetAllEquivalents

### wxEncodingConverter::wxEncodingConverter

wxEncodingConverter()

Constructor.

### wxEncodingConverter::Init

bool Init(wxFontEncoding input_enc, wxFontEncoding output_enc, int method = wxCONVERT_STRICT)

Initialize conversion. Both output or input encoding may be wxFONTENCODING_UNICODE, but only if wxUSE_ENCODING is set to 1. All subsequent calls to Convert() will interpret its argument as a string in input_enc encoding and will output string in output_enc encoding. You must call this method before calling Convert. You may call it more than once in order to switch to another conversion. Method affects behaviour of Convert() in case input character cannot be converted because it does not exist in output encoding:

wxCONVERT_STRICT | follow behaviour of GNU Recode - just copy unconvertible characters to output and don't change them (its integer value will stay the same)
wxCONVERT_SUBSTITUTE | try some (lossy) substitutions - e.g. replace unconvertible latin capitals with acute by ordinary capitals, replace en-dash or em-dash by '-' etc.

Both modes guarantee that output string will have same length as input string.

Return value

FALSE if given conversion is impossible, TRUE otherwise (conversion may be impossible either if you try to convert to Unicode with non-Unicode build of wxWindows or if input or output encoding is not supported.)

### wxEncodingConverter::Convert

void Convert(const char* input, char* output)

void Convert(const wchar_t* input, wchar_t* output)

void Convert(const char* input, wchar_t* output)

void Convert(const wchar_t* input, char* output)

Convert input string according to settings passed to Init and writes the result to output.

void Convert(char* str)

void Convert(wchar_t* str)

Convert input string according to settings passed to Init in-place, i.e. write the result to the same memory area.

wxString Convert(const wxString& input)

Convert wxString and return new wxString object.

Notes

You must call Init before using this method!

`wchar_t` versions of the method are not available if wxWindows was compiled with `wxUSE_WCHAR_T` set to 0.

### wxEncodingConverter::GetPlatformEquivalents

static wxFontEncodingArray GetPlatformEquivalents(wxFontEncoding enc, int platform = wxPLATFORM_CURRENT)

Return equivalents for given font that are used under given platform. Supported platforms:

- wxPLATFORM_UNIX
- wxPLATFORM_WINDOWS
- wxPLATFORM_OS2
- wxPLATFORM_MAC
- wxPLATFORM_CURRENT

wxPLATFORM_CURRENT means the platform this binary was compiled for.

Examples:

    current platform   enc          returned value
    ----------------------------------------------
    unix            CP1250             {ISO8859_2}
    unix         ISO8859_2             {ISO8859_2}
    windows      ISO8859_2                {CP1250}
    unix            CP1252  {ISO8859_1,ISO8859_15}

Equivalence is defined in terms of convertibility: two encodings are equivalent if you can convert text between then without losing information (it may - and will - happen that you lose special chars like quotation marks or em-dashes but you shouldn't lose any diacritics and language-specific characters when converting between equivalent encodings).

Remember that this function does NOT check for presence of fonts in system. It only tells you what are most suitable encodings. (It usually returns only one encoding.)

Notes

- Note that argument enc itself may be present in the returned array, so that you can, as a side-effect, detect whether the encoding is native for this platform or not.
- Convert is not limited to converting between equivalent encodings, it can convert between two arbitrary encodings.
- If enc is present in the returned array, then it is always the first item of it.
- Please note that the returned array may contain no items at all.

### wxEncodingConverter::GetAllEquivalents

static wxFontEncodingArray GetAllEquivalents(wxFontEncoding enc)

Similar to GetPlatformEquivalents, but this one will return ALL equivalent encodings, regardless of the platform, and including itself.

This platform's encodings are before others in the array. And again, if enc is in the array, it is the very first item in it.