interface/wx/intl.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        intl.h
   3 // Purpose:     interface of wxLocale
   4 // Author:      wxWidgets team
   5 // RCS-ID:      $Id$
   6 // Licence:     wxWindows license
   7 /////////////////////////////////////////////////////////////////////////////
   8
   9
  10 // --- --- --- generated code begins here --- --- ---
  11
  12 /**
  13     The languages supported by wxLocale.
  14
  15     This enum is generated by misc/languages/genlang.py
  16     When making changes, please put them into misc/languages/langtabl.txt
  17 */
  18 enum wxLanguage
  19 {
  20     /// User's default/preferred language as got from OS.
  21     wxLANGUAGE_DEFAULT,
  22
  23     /// Unknown language, returned if wxLocale::GetSystemLanguage fails.
  24     wxLANGUAGE_UNKNOWN,
  25
  26     wxLANGUAGE_ABKHAZIAN,
  27     wxLANGUAGE_AFAR,
  28     wxLANGUAGE_AFRIKAANS,
  29     wxLANGUAGE_ALBANIAN,
  30     wxLANGUAGE_AMHARIC,
  31     wxLANGUAGE_ARABIC,
  32     wxLANGUAGE_ARABIC_ALGERIA,
  33     wxLANGUAGE_ARABIC_BAHRAIN,
  34     wxLANGUAGE_ARABIC_EGYPT,
  35     wxLANGUAGE_ARABIC_IRAQ,
  36     wxLANGUAGE_ARABIC_JORDAN,
  37     wxLANGUAGE_ARABIC_KUWAIT,
  38     wxLANGUAGE_ARABIC_LEBANON,
  39     wxLANGUAGE_ARABIC_LIBYA,
  40     wxLANGUAGE_ARABIC_MOROCCO,
  41     wxLANGUAGE_ARABIC_OMAN,
  42     wxLANGUAGE_ARABIC_QATAR,
  43     wxLANGUAGE_ARABIC_SAUDI_ARABIA,
  44     wxLANGUAGE_ARABIC_SUDAN,
  45     wxLANGUAGE_ARABIC_SYRIA,
  46     wxLANGUAGE_ARABIC_TUNISIA,
  47     wxLANGUAGE_ARABIC_UAE,
  48     wxLANGUAGE_ARABIC_YEMEN,
  49     wxLANGUAGE_ARMENIAN,
  50     wxLANGUAGE_ASSAMESE,
  51     wxLANGUAGE_AYMARA,
  52     wxLANGUAGE_AZERI,
  53     wxLANGUAGE_AZERI_CYRILLIC,
  54     wxLANGUAGE_AZERI_LATIN,
  55     wxLANGUAGE_BASHKIR,
  56     wxLANGUAGE_BASQUE,
  57     wxLANGUAGE_BELARUSIAN,
  58     wxLANGUAGE_BENGALI,
  59     wxLANGUAGE_BHUTANI,
  60     wxLANGUAGE_BIHARI,
  61     wxLANGUAGE_BISLAMA,
  62     wxLANGUAGE_BRETON,
  63     wxLANGUAGE_BULGARIAN,
  64     wxLANGUAGE_BURMESE,
  65     wxLANGUAGE_CAMBODIAN,
  66     wxLANGUAGE_CATALAN,
  67     wxLANGUAGE_CHINESE,
  68     wxLANGUAGE_CHINESE_SIMPLIFIED,
  69     wxLANGUAGE_CHINESE_TRADITIONAL,
  70     wxLANGUAGE_CHINESE_HONGKONG,
  71     wxLANGUAGE_CHINESE_MACAU,
  72     wxLANGUAGE_CHINESE_SINGAPORE,
  73     wxLANGUAGE_CHINESE_TAIWAN,
  74     wxLANGUAGE_CORSICAN,
  75     wxLANGUAGE_CROATIAN,
  76     wxLANGUAGE_CZECH,
  77     wxLANGUAGE_DANISH,
  78     wxLANGUAGE_DUTCH,
  79     wxLANGUAGE_DUTCH_BELGIAN,
  80     wxLANGUAGE_ENGLISH,
  81     wxLANGUAGE_ENGLISH_UK,
  82     wxLANGUAGE_ENGLISH_US,
  83     wxLANGUAGE_ENGLISH_AUSTRALIA,
  84     wxLANGUAGE_ENGLISH_BELIZE,
  85     wxLANGUAGE_ENGLISH_BOTSWANA,
  86     wxLANGUAGE_ENGLISH_CANADA,
  87     wxLANGUAGE_ENGLISH_CARIBBEAN,
  88     wxLANGUAGE_ENGLISH_DENMARK,
  89     wxLANGUAGE_ENGLISH_EIRE,
  90     wxLANGUAGE_ENGLISH_JAMAICA,
  91     wxLANGUAGE_ENGLISH_NEW_ZEALAND,
  92     wxLANGUAGE_ENGLISH_PHILIPPINES,
  93     wxLANGUAGE_ENGLISH_SOUTH_AFRICA,
  94     wxLANGUAGE_ENGLISH_TRINIDAD,
  95     wxLANGUAGE_ENGLISH_ZIMBABWE,
  96     wxLANGUAGE_ESPERANTO,
  97     wxLANGUAGE_ESTONIAN,
  98     wxLANGUAGE_FAEROESE,
  99     wxLANGUAGE_FARSI,
 100     wxLANGUAGE_FIJI,
 101     wxLANGUAGE_FINNISH,
 102     wxLANGUAGE_FRENCH,
 103     wxLANGUAGE_FRENCH_BELGIAN,
 104     wxLANGUAGE_FRENCH_CANADIAN,
 105     wxLANGUAGE_FRENCH_LUXEMBOURG,
 106     wxLANGUAGE_FRENCH_MONACO,
 107     wxLANGUAGE_FRENCH_SWISS,
 108     wxLANGUAGE_FRISIAN,
 109     wxLANGUAGE_GALICIAN,
 110     wxLANGUAGE_GEORGIAN,
 111     wxLANGUAGE_GERMAN,
 112     wxLANGUAGE_GERMAN_AUSTRIAN,
 113     wxLANGUAGE_GERMAN_BELGIUM,
 114     wxLANGUAGE_GERMAN_LIECHTENSTEIN,
 115     wxLANGUAGE_GERMAN_LUXEMBOURG,
 116     wxLANGUAGE_GERMAN_SWISS,
 117     wxLANGUAGE_GREEK,
 118     wxLANGUAGE_GREENLANDIC,
 119     wxLANGUAGE_GUARANI,
 120     wxLANGUAGE_GUJARATI,
 121     wxLANGUAGE_HAUSA,
 122     wxLANGUAGE_HEBREW,
 123     wxLANGUAGE_HINDI,
 124     wxLANGUAGE_HUNGARIAN,
 125     wxLANGUAGE_ICELANDIC,
 126     wxLANGUAGE_INDONESIAN,
 127     wxLANGUAGE_INTERLINGUA,
 128     wxLANGUAGE_INTERLINGUE,
 129     wxLANGUAGE_INUKTITUT,
 130     wxLANGUAGE_INUPIAK,
 131     wxLANGUAGE_IRISH,
 132     wxLANGUAGE_ITALIAN,
 133     wxLANGUAGE_ITALIAN_SWISS,
 134     wxLANGUAGE_JAPANESE,
 135     wxLANGUAGE_JAVANESE,
 136     wxLANGUAGE_KANNADA,
 137     wxLANGUAGE_KASHMIRI,
 138     wxLANGUAGE_KASHMIRI_INDIA,
 139     wxLANGUAGE_KAZAKH,
 140     wxLANGUAGE_KERNEWEK,
 141     wxLANGUAGE_KINYARWANDA,
 142     wxLANGUAGE_KIRGHIZ,
 143     wxLANGUAGE_KIRUNDI,
 144     wxLANGUAGE_KONKANI,
 145     wxLANGUAGE_KOREAN,
 146     wxLANGUAGE_KURDISH,
 147     wxLANGUAGE_LAOTHIAN,
 148     wxLANGUAGE_LATIN,
 149     wxLANGUAGE_LATVIAN,
 150     wxLANGUAGE_LINGALA,
 151     wxLANGUAGE_LITHUANIAN,
 152     wxLANGUAGE_MACEDONIAN,
 153     wxLANGUAGE_MALAGASY,
 154     wxLANGUAGE_MALAY,
 155     wxLANGUAGE_MALAYALAM,
 156     wxLANGUAGE_MALAY_BRUNEI_DARUSSALAM,
 157     wxLANGUAGE_MALAY_MALAYSIA,
 158     wxLANGUAGE_MALTESE,
 159     wxLANGUAGE_MANIPURI,
 160     wxLANGUAGE_MAORI,
 161     wxLANGUAGE_MARATHI,
 162     wxLANGUAGE_MOLDAVIAN,
 163     wxLANGUAGE_MONGOLIAN,
 164     wxLANGUAGE_NAURU,
 165     wxLANGUAGE_NEPALI,
 166     wxLANGUAGE_NEPALI_INDIA,
 167     wxLANGUAGE_NORWEGIAN_BOKMAL,
 168     wxLANGUAGE_NORWEGIAN_NYNORSK,
 169     wxLANGUAGE_OCCITAN,
 170     wxLANGUAGE_ORIYA,
 171     wxLANGUAGE_OROMO,
 172     wxLANGUAGE_PASHTO,
 173     wxLANGUAGE_POLISH,
 174     wxLANGUAGE_PORTUGUESE,
 175     wxLANGUAGE_PORTUGUESE_BRAZILIAN,
 176     wxLANGUAGE_PUNJABI,
 177     wxLANGUAGE_QUECHUA,
 178     wxLANGUAGE_RHAETO_ROMANCE,
 179     wxLANGUAGE_ROMANIAN,
 180     wxLANGUAGE_RUSSIAN,
 181     wxLANGUAGE_RUSSIAN_UKRAINE,
 182     wxLANGUAGE_SAMI,
 183     wxLANGUAGE_SAMOAN,
 184     wxLANGUAGE_SANGHO,
 185     wxLANGUAGE_SANSKRIT,
 186     wxLANGUAGE_SCOTS_GAELIC,
 187     wxLANGUAGE_SERBIAN,
 188     wxLANGUAGE_SERBIAN_CYRILLIC,
 189     wxLANGUAGE_SERBIAN_LATIN,
 190     wxLANGUAGE_SERBO_CROATIAN,
 191     wxLANGUAGE_SESOTHO,
 192     wxLANGUAGE_SETSWANA,
 193     wxLANGUAGE_SHONA,
 194     wxLANGUAGE_SINDHI,
 195     wxLANGUAGE_SINHALESE,
 196     wxLANGUAGE_SISWATI,
 197     wxLANGUAGE_SLOVAK,
 198     wxLANGUAGE_SLOVENIAN,
 199     wxLANGUAGE_SOMALI,
 200     wxLANGUAGE_SPANISH,
 201     wxLANGUAGE_SPANISH_ARGENTINA,
 202     wxLANGUAGE_SPANISH_BOLIVIA,
 203     wxLANGUAGE_SPANISH_CHILE,
 204     wxLANGUAGE_SPANISH_COLOMBIA,
 205     wxLANGUAGE_SPANISH_COSTA_RICA,
 206     wxLANGUAGE_SPANISH_DOMINICAN_REPUBLIC,
 207     wxLANGUAGE_SPANISH_ECUADOR,
 208     wxLANGUAGE_SPANISH_EL_SALVADOR,
 209     wxLANGUAGE_SPANISH_GUATEMALA,
 210     wxLANGUAGE_SPANISH_HONDURAS,
 211     wxLANGUAGE_SPANISH_MEXICAN,
 212     wxLANGUAGE_SPANISH_MODERN,
 213     wxLANGUAGE_SPANISH_NICARAGUA,
 214     wxLANGUAGE_SPANISH_PANAMA,
 215     wxLANGUAGE_SPANISH_PARAGUAY,
 216     wxLANGUAGE_SPANISH_PERU,
 217     wxLANGUAGE_SPANISH_PUERTO_RICO,
 218     wxLANGUAGE_SPANISH_URUGUAY,
 219     wxLANGUAGE_SPANISH_US,
 220     wxLANGUAGE_SPANISH_VENEZUELA,
 221     wxLANGUAGE_SUNDANESE,
 222     wxLANGUAGE_SWAHILI,
 223     wxLANGUAGE_SWEDISH,
 224     wxLANGUAGE_SWEDISH_FINLAND,
 225     wxLANGUAGE_TAGALOG,
 226     wxLANGUAGE_TAJIK,
 227     wxLANGUAGE_TAMIL,
 228     wxLANGUAGE_TATAR,
 229     wxLANGUAGE_TELUGU,
 230     wxLANGUAGE_THAI,
 231     wxLANGUAGE_TIBETAN,
 232     wxLANGUAGE_TIGRINYA,
 233     wxLANGUAGE_TONGA,
 234     wxLANGUAGE_TSONGA,
 235     wxLANGUAGE_TURKISH,
 236     wxLANGUAGE_TURKMEN,
 237     wxLANGUAGE_TWI,
 238     wxLANGUAGE_UIGHUR,
 239     wxLANGUAGE_UKRAINIAN,
 240     wxLANGUAGE_URDU,
 241     wxLANGUAGE_URDU_INDIA,
 242     wxLANGUAGE_URDU_PAKISTAN,
 243     wxLANGUAGE_UZBEK,
 244     wxLANGUAGE_UZBEK_CYRILLIC,
 245     wxLANGUAGE_UZBEK_LATIN,
 246     wxLANGUAGE_VALENCIAN,
 247     wxLANGUAGE_VIETNAMESE,
 248     wxLANGUAGE_VOLAPUK,
 249     wxLANGUAGE_WELSH,
 250     wxLANGUAGE_WOLOF,
 251     wxLANGUAGE_XHOSA,
 252     wxLANGUAGE_YIDDISH,
 253     wxLANGUAGE_YORUBA,
 254     wxLANGUAGE_ZHUANG,
 255     wxLANGUAGE_ZULU,
 256
 257     /// For custom, user-defined languages.
 258     wxLANGUAGE_USER_DEFINED
 259 };
 260
 261 // --- --- --- generated code ends here --- --- ---
 262
 263
 264
 265 /**
 266     This is the layout direction stored in wxLanguageInfo and returned by
 267     wxApp::GetLayoutDirection() for RTL (right-to-left) languages support.
 268 */
 269 enum wxLayoutDirection
 270 {
 271     wxLayout_Default,
 272     wxLayout_LeftToRight,
 273     wxLayout_RightToLeft
 274 };
 275
 276 /**
 277     wxLanguageInfo: encapsulates ::wxLanguage to OS native lang.desc.
 278                     translation information
 279 */
 280 struct WXDLLIMPEXP_BASE wxLanguageInfo
 281 {
 282     /// ::wxLanguage id. It should be greater than wxLANGUAGE_USER_DEFINED.
 283     int Language;
 284     wxString CanonicalName;         //!< Canonical name, e.g. fr_FR.
 285 #ifdef __WXMSW__
 286     wxUint32 WinLang,               //!< Win32 language identifiers (LANG_xxxx, SUBLANG_xxxx).
 287              WinSublang;
 288 #endif // __WXMSW__
 289     wxString Description;           //!< Human-readable name of the language.
 290     wxLayoutDirection LayoutDirection;
 291
 292 #ifdef __WXMSW__
 293     /// Return the LCID corresponding to this language.
 294     wxUint32 GetLCID() const;
 295 #endif // __WXMSW__
 296
 297     /// Return the locale name corresponding to this language usable with
 298     /// setlocale() on the current system
 299     wxString GetLocaleName() const;
 300 };
 301
 302
 303 /**
 304     @class wxLocale
 305
 306     wxLocale class encapsulates all language-dependent settings and is a
 307     generalization of the C locale concept.
 308
 309     In wxWidgets this class manages message catalogs which contain the translations
 310     of the strings used to the current language.
 311
 312     For a list of the supported languages, please see ::wxLanguage enum values.
 313     These constants may be used to specify the language in wxLocale::Init and
 314     are returned by wxLocale::GetSystemLanguage.
 315
 316     @beginWxPerlOnly
 317     In wxPerl you can't use the '_' function name, so
 318     the @c Wx::Locale module can export the @c gettext and
 319     @c gettext_noop under any given name.
 320
 321     @code
 322       # this imports gettext ( equivalent to Wx::GetTranslation
 323       # and gettext_noop ( a noop )
 324       # into your module
 325       use Wx::Locale qw(:default);
 326
 327       # ....
 328
 329       # use the functions
 330       print gettext( "Panic!" );
 331
 332       button = Wx::Button-new( window, -1, gettext( "Label" ) );
 333     @endcode
 334
 335     If you need to translate a lot of strings, then adding gettext( ) around
 336     each one is a long task ( that is why _( ) was introduced ), so just choose
 337     a shorter name for gettext:
 338
 339     @code
 340       use Wx::Locale 'gettext' = 't',
 341                      'gettext_noop' = 'gettext_noop';
 342
 343       # ...
 344
 345       # use the functions
 346       print t( "Panic!!" );
 347
 348       # ...
 349     @endcode
 350     @endWxPerlOnly
 351
 352     @library{wxbase}
 353     @category{misc}
 354
 355     @see @ref overview_i18n, @ref page_samples_internat, wxXLocale
 356 */
 357 class wxLocale
 358 {
 359 public:
 360     /**
 361         This is the default constructor and it does nothing to initialize the object:
 362         Init() must be used to do that.
 363     */
 364     wxLocale();
 365
 366     /**
 367         See Init() for parameters description.
 368     */
 369     wxLocale(int language,
 370              int flags = wxLOCALE_LOAD_DEFAULT | wxLOCALE_CONV_ENCODING);
 371
 372     /**
 373         See Init() for parameters description.
 374
 375         The call of this function has several global side effects which you should
 376         understand: first of all, the application locale is changed - note that this
 377         will affect many of standard C library functions such as printf() or strftime().
 378         Second, this wxLocale object becomes the new current global locale for the
 379         application and so all subsequent calls to ::wxGetTranslation() will try to
 380         translate the messages using the message catalogs for this locale.
 381     */
 382     wxLocale(const wxString& name,
 383              const wxString& short = wxEmptyString,
 384              const wxString& locale = wxEmptyString,
 385              bool bLoadDefault = true,
 386              bool bConvertEncoding = false);
 387
 388     /**
 389         The destructor, like the constructor, also has global side effects: the
 390         previously set locale is restored and so the changes described in
 391         Init() documentation are rolled back.
 392     */
 393     virtual ~wxLocale();
 394
 395     /**
 396         Add a catalog for use with the current locale: it is searched for in standard
 397         places (current directory first, then the system one), but you may also prepend
 398         additional directories to the search path with AddCatalogLookupPathPrefix().
 399
 400         All loaded catalogs will be used for message lookup by GetString() for
 401         the current locale.
 402
 403         In this overload, @c msgid strings are assumed
 404         to be in English and written only using 7-bit ASCII characters.
 405         If you have to deal with non-English strings or 8-bit characters in the
 406         source code, see the instructions in @ref overview_nonenglish.
 407
 408         @return
 409             @true if catalog was successfully loaded, @false otherwise (which might
 410             mean that the catalog is not found or that it isn't in the correct format).
 411     */
 412     bool AddCatalog(const wxString& domain);
 413
 414     /**
 415         Add a catalog for use with the current locale: it is searched for in standard
 416         places (current directory first, then the system one), but you may also prepend
 417         additional directories to the search path with AddCatalogLookupPathPrefix().
 418
 419         All loaded catalogs will be used for message lookup by GetString() for
 420         the current locale.
 421
 422         This overload takes two additional arguments, @a msgIdLanguage and @a msgIdCharset.
 423
 424         @param domain
 425             The catalog domain to add.
 426
 427         @param msgIdLanguage
 428             Specifies the language of "msgid" strings in source code
 429             (i.e. arguments to GetString(), wxGetTranslation() and the _() macro).
 430             It is used if AddCatalog() cannot find any catalog for current language:
 431             if the language is same as source code language, then strings from source
 432             code are used instead.
 433
 434         @param msgIdCharset
 435             Lets you specify the charset used for msgids in sources
 436             in case they use 8-bit characters (e.g. German or French strings).
 437             This argument has no effect in Unicode build, because literals in sources are
 438             Unicode strings; you have to use compiler-specific method of setting the right
 439             charset when compiling with Unicode.
 440
 441         @return
 442             @true if catalog was successfully loaded, @false otherwise (which might
 443             mean that the catalog is not found or that it isn't in the correct format).
 444     */
 445     bool AddCatalog(const wxString& domain, wxLanguage msgIdLanguage,
 446                     const wxString& msgIdCharset);
 447
 448     /**
 449         Add a prefix to the catalog lookup path: the message catalog files will
 450         be looked up under prefix/lang/LC_MESSAGES, prefix/lang and prefix
 451         (in this order).
 452
 453         This only applies to subsequent invocations of AddCatalog().
 454     */
 455     static void AddCatalogLookupPathPrefix(const wxString& prefix);
 456
 457     /**
 458         Adds custom, user-defined language to the database of known languages.
 459         This database is used in conjunction with the first form of Init().
 460     */
 461     static void AddLanguage(const wxLanguageInfo& info);
 462
 463     /**
 464         This function may be used to find the language description structure for the
 465         given locale, specified either as a two letter ISO language code (for example,
 466         "pt"), a language code followed by the country code ("pt_BR") or a full, human
 467         readable, language description ("Portuguese-Brazil").
 468
 469         Returns the information for the given language or @NULL if this language
 470         is unknown. Note that even if the returned pointer is valid, the caller
 471         should @e not delete it.
 472
 473         @see GetLanguageInfo()
 474     */
 475     static const wxLanguageInfo* FindLanguageInfo(const wxString& locale);
 476
 477     /**
 478         Returns the canonical form of current locale name. Canonical form is the
 479         one that is used on UNIX systems: it is a two- or five-letter string in xx or
 480         xx_YY format, where xx is ISO 639 code of language and YY is ISO 3166 code of
 481         the country. Examples are "en", "en_GB", "en_US" or "fr_FR".
 482         This form is internally used when looking up message catalogs.
 483         Compare GetSysName().
 484     */
 485     wxString GetCanonicalName() const;
 486
 487     /**
 488         Returns the header value for header @a header.
 489         The search for @a header is case sensitive. If an @a domain is passed,
 490         this domain is searched. Else all domains will be searched until a
 491         header has been found.
 492
 493         The return value is the value of the header if found. Else this will be empty.
 494     */
 495     wxString GetHeaderValue(const wxString& header,
 496                             const wxString& domain = wxEmptyString) const;
 497
 498     /**
 499         Returns the ::wxLanguage constant of current language.
 500
 501         Note that you can call this function only if you used the form of
 502         Init() that takes ::wxLanguage argument.
 503     */
 504     int GetLanguage() const;
 505
 506     /**
 507         Returns a pointer to wxLanguageInfo structure containing information about
 508         the given language or @NULL if this language is unknown. Note that even if
 509         the returned pointer is valid, the caller should @e not delete it.
 510
 511         See AddLanguage() for the wxLanguageInfo description.
 512         As with Init(), @c wxLANGUAGE_DEFAULT has the special meaning if passed
 513         as an argument to this function and in this case the result of
 514         GetSystemLanguage() is used.
 515     */
 516     static const wxLanguageInfo* GetLanguageInfo(int lang);
 517
 518     /**
 519         Returns English name of the given language or empty string if this
 520         language is unknown.
 521
 522         See GetLanguageInfo() for a remark about special meaning of @c wxLANGUAGE_DEFAULT.
 523     */
 524     static wxString GetLanguageName(int lang);
 525
 526     /**
 527         Returns the locale name as passed to the constructor or Init().
 528
 529         This is a full, human-readable name, e.g. "English" or "French".
 530     */
 531     const wxString& GetLocale() const;
 532
 533     /**
 534         Returns the current short name for the locale (as given to the constructor or
 535         the Init() function).
 536     */
 537     const wxString& GetName() const;
 538
 539     /**
 540         Retrieves the translation for a string in all loaded domains unless the @a domain
 541         parameter is specified (and then only this catalog/domain is searched).
 542
 543         Returns original string if translation is not available (in this case an
 544         error message is generated the first time a string is not found; use
 545         wxLogNull to suppress it).
 546
 547         @remarks Domains are searched in the last to first order, i.e. catalogs
 548                  added later override those added before.
 549     */
 550     virtual const wxString& GetString(const wxString& origString,
 551                                       const wxString& domain = wxEmptyString) const;
 552
 553     /**
 554         Retrieves the translation for a string in all loaded domains unless the @a domain
 555         parameter is specified (and then only this catalog/domain is searched).
 556
 557         Returns original string if translation is not available (in this case an
 558         error message is generated the first time a string is not found; use
 559         wxLogNull to suppress it).
 560
 561         This form is used when retrieving translation of string that has different
 562         singular and plural form in English or different plural forms in some
 563         other language.
 564         It takes two extra arguments: @a origString parameter must contain the
 565         singular form of the string to be converted.
 566
 567         It is also used as the key for the search in the catalog.
 568         The @a origString2 parameter is the plural form (in English).
 569
 570         The parameter @a n is used to determine the plural form.
 571         If no message catalog is found @a origString is returned if 'n == 1',
 572         otherwise @a origString2.
 573
 574         See GNU gettext manual for additional information on plural forms handling.
 575         This method is called by the wxGetTranslation() function and _() macro.
 576
 577         @remarks Domains are searched in the last to first order, i.e. catalogs
 578                  added later override those added before.
 579     */
 580     virtual const wxString& GetString(const wxString& origString,
 581                                       const wxString& origString2, size_t n,
 582                                       const wxString& domain = wxEmptyString) const;
 583
 584     /**
 585         Returns current platform-specific locale name as passed to setlocale().
 586         Compare GetCanonicalName().
 587     */
 588     wxString GetSysName() const;
 589
 590     /**
 591         Tries to detect the user's default font encoding.
 592         Returns wxFontEncoding() value or @c wxFONTENCODING_SYSTEM if it
 593         couldn't be determined.
 594     */
 595     static wxFontEncoding GetSystemEncoding();
 596
 597     /**
 598         Tries to detect the name of the user's default font encoding.
 599         This string isn't particularly useful for the application as its form is
 600         platform-dependent and so you should probably use GetSystemEncoding() instead.
 601
 602         Returns a user-readable string value or an empty string if it couldn't be
 603         determined.
 604     */
 605     static wxString GetSystemEncodingName();
 606
 607     /**
 608         Tries to detect the user's default language setting.
 609         Returns the ::wxLanguage value or @b wxLANGUAGE_UNKNOWN if the language-guessing
 610         algorithm failed.
 611     */
 612     static int GetSystemLanguage();
 613
 614     /**
 615         Initializes the wxLocale instance.
 616
 617         The call of this function has several global side effects which you should
 618         understand: first of all, the application locale is changed - note that
 619         this will affect many of standard C library functions such as printf()
 620         or strftime().
 621         Second, this wxLocale object becomes the new current global locale for
 622         the application and so all subsequent calls to wxGetTranslation() will
 623         try to translate the messages using the message catalogs for this locale.
 624
 625         @param language
 626             ::wxLanguage identifier of the locale.
 627             @c wxLANGUAGE_DEFAULT has special meaning -- wxLocale will use system's
 628             default language (see GetSystemLanguage()).
 629         @param flags
 630             Combination of the following:
 631             - wxLOCALE_LOAD_DEFAULT: Load the message catalog for the given locale
 632               containing the translations of standard wxWidgets messages
 633               automatically.
 634             - wxLOCALE_CONV_ENCODING: Automatically convert message catalogs to
 635               platform's default encoding. Note that it will do only basic
 636               conversion between well-known pair like iso8859-1 and windows-1252 or
 637               iso8859-2 and windows-1250. See @ref overview_nonenglish for
 638               detailed description of this behaviour.
 639               Note that this flag is meaningless in Unicode build.
 640
 641         @return @true on success or @false if the given locale couldn't be set.
 642     */
 643     bool Init(int language = wxLANGUAGE_DEFAULT,
 644               int flags = wxLOCALE_LOAD_DEFAULT | wxLOCALE_CONV_ENCODING);
 645
 646     /**
 647         @deprecated
 648         This form is deprecated, use the other one unless you know what you are doing.
 649
 650         @param name
 651             The name of the locale. Only used in diagnostic messages.
 652         @param short
 653             The standard 2 letter locale abbreviation; it is used as the
 654             directory prefix when looking for the message catalog files.
 655         @param locale
 656             The parameter for the call to setlocale().
 657             Note that it is platform-specific.
 658         @param bLoadDefault
 659             May be set to @false to prevent loading of the message catalog for the
 660             given locale containing the translations of standard wxWidgets messages.
 661             This parameter would be rarely used in normal circumstances.
 662         @param bConvertEncoding
 663             May be set to @true to do automatic conversion of message catalogs to
 664             platform's native encoding. Note that it will do only basic conversion
 665             between well-known pair like iso8859-1 and windows-1252 or iso8859-2
 666             and windows-1250.
 667             See @ref overview_nonenglish for detailed description of this behaviour.
 668     */
 669     bool Init(const wxString& name, const wxString& short = wxEmptyString,
 670               const wxString& locale = wxEmptyString, bool bLoadDefault = true,
 671               bool bConvertEncoding = false);
 672
 673     /**
 674         Check whether the operating system and/or C run time environment supports
 675         this locale. For example in Windows 2000 and Windows XP, support for many
 676         locales is not installed by default. Returns @true if the locale is
 677         supported.
 678
 679         The argument @a lang is the ::wxLanguage identifier. To obtain this for a
 680         given a two letter ISO language code, use FindLanguageInfo() to obtain its
 681         wxLanguageInfo structure.
 682         See AddLanguage() for the wxLanguageInfo description.
 683
 684         @since 2.7.1.
 685     */
 686     static bool IsAvailable(int lang);
 687
 688     /**
 689         Check if the given catalog is loaded, and returns @true if it is.
 690
 691         According to GNU gettext tradition, each catalog normally corresponds to
 692         'domain' which is more or less the application name.
 693
 694         @see AddCatalog()
 695     */
 696     bool IsLoaded(const wxString& domain) const;
 697
 698     /**
 699         Returns @true if the locale could be set successfully.
 700     */
 701     bool IsOk() const;
 702 };
 703
 704
 705
 706
 707 // ============================================================================
 708 // Global functions/macros
 709 // ============================================================================
 710
 711 /** @addtogroup group_funcmacro_string */
 712 //@{
 713
 714 /**
 715     This macro is identical to _() but for the plural variant of
 716     wxGetTranslation().
 717
 718     @return A const wxString.
 719
 720     @header{wx/intl.h}
 721 */
 722 #define wxPLURAL(string, plural, n)
 723
 724 /**
 725     This macro doesn't do anything in the program code -- it simply expands to
 726     the value of its argument.
 727
 728     However it does have a purpose which is to mark the literal strings for the
 729     extraction into the message catalog created by @c xgettext program. Usually
 730     this is achieved using _() but that macro not only marks the string for
 731     extraction but also expands into a wxGetTranslation() call which means that
 732     it cannot be used in some situations, notably for static array
 733     initialization.
 734
 735     Here is an example which should make it more clear: suppose that you have a
 736     static array of strings containing the weekday names and which have to be
 737     translated (note that it is a bad example, really, as wxDateTime already
 738     can be used to get the localized week day names already). If you write:
 739
 740     @code
 741     static const char * const weekdays[] = { _("Mon"), ..., _("Sun") };
 742     ...
 743     // use weekdays[n] as usual
 744     @endcode
 745
 746     The code wouldn't compile because the function calls are forbidden in the
 747     array initializer. So instead you should do this:
 748
 749     @code
 750     static const char * const weekdays[] = { wxTRANSLATE("Mon"), ...,
 751     wxTRANSLATE("Sun") };
 752     ...
 753     // use wxGetTranslation(weekdays[n])
 754     @endcode
 755
 756     Note that although the code @b would compile if you simply omit
 757     wxTRANSLATE() in the above, it wouldn't work as expected because there
 758     would be no translations for the weekday names in the program message
 759     catalog and wxGetTranslation() wouldn't find them.
 760
 761     @return A const wxChar*.
 762
 763     @header{wx/intl.h}
 764 */
 765 #define wxTRANSLATE(string)
 766
 767 /**
 768     This function returns the translation of @a string in the current
 769     @c locale(). If the string is not found in any of the loaded message
 770     catalogs (see @ref overview_i18n), the original string is returned. In
 771     debug build, an error message is logged -- this should help to find the
 772     strings which were not yet translated.  If @a domain is specified then only
 773     that domain/catalog is searched for a matching string.  As this function is
 774     used very often, an alternative (and also common in Unix world) syntax is
 775     provided: the _() macro is defined to do the same thing as
 776     wxGetTranslation().
 777
 778     This function calls wxLocale::GetString().
 779
 780     @note This function is not suitable for literal strings in Unicode builds
 781           since the literal strings must be enclosed into _T() or wxT() macro
 782           which makes them unrecognised by @c xgettext, and so they are not
 783           extracted to the message catalog. Instead, use the _() and wxPLURAL()
 784           macro for all literal strings.
 785
 786     @see wxGetTranslation(const wxString&, const wxString&, size_t, const wxString&)
 787
 788     @header{wx/intl.h}
 789 */
 790 const wxString& wxGetTranslation(const wxString& string,
 791                                  const wxString& domain = wxEmptyString);
 792
 793 /**
 794     This is an overloaded version of
 795     wxGetTranslation(const wxString&, const wxString&), please see its
 796     documentation for general information.
 797
 798     This version is used when retrieving translation of string that has
 799     different singular and plural forms in English or different plural forms in
 800     some other language. Like wxGetTranslation(const wxString&,const wxString&),
 801     the @a string parameter must contain the singular form of the string to be
 802     converted and is used as the key for the search in the catalog. The
 803     @a plural parameter is the plural form (in English). The parameter @a n is
 804     used to determine the plural form. If no message catalog is found,
 805     @a string is returned if "n == 1", otherwise @a plural is returned.
 806
 807     See GNU gettext Manual for additional information on plural forms handling:
 808     <http://www.gnu.org/software/gettext/manual/gettext.html#Plural-forms>
 809     For a shorter alternative see the wxPLURAL() macro.
 810
 811     This function calls wxLocale::GetString().
 812
 813     @header{wx/intl.h}
 814 */
 815 const wxString& wxGetTranslation(const wxString& string,
 816                                  const wxString& plural, size_t n,
 817                                  const wxString& domain = wxEmptyString);
 818
 819 /**
 820     This macro expands into a call to wxGetTranslation(), so it marks the
 821     message for the extraction by @c xgettext just as wxTRANSLATE() does, but
 822     also returns the translation of the string for the current locale during
 823     execution.
 824
 825     Don't confuse this with _T()!
 826
 827     @header{wx/intl.h}
 828 */
 829 const wxString& _(const wxString& string);
 830
 831 //@}
 832