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Qt Documentation

QLocale Class

TheQLocale class converts between numbers and their string representations in various languages.More...

Header:#include <QLocale>

Note: All functions in this class arereentrant, except forsetDefault(), which is nonreentrant.

Public Types

classData
enumCountry { AnyCountry, Afghanistan, Albania, Algeria, ..., LatinAmericaAndTheCaribbean }
enumCurrencySymbolFormat { CurrencyIsoCode, CurrencySymbol, CurrencyDisplayName }
enumFormatType { LongFormat, ShortFormat, NarrowFormat }
enumLanguage { AnyLanguage, C, Abkhazian, Afan, ..., Shambala }
enumMeasurementSystem { MetricSystem, ImperialSystem }
enumNumberOption { OmitGroupSeparator, RejectGroupSeparator }
flagsNumberOptions
enumQuotationStyle { StandardQuotation, AlternateQuotation }
enumScript { AnyScript, ArabicScript, CyrillicScript, DeseretScript, ..., TifinaghScript }

Public Functions

QLocale()
QLocale(const QString & name)
QLocale(Language language, Country country = AnyCountry)
QLocale(Language language, Script script, Country country)
QLocale(const QLocale & other)
QStringamText() const
QStringbcp47Name() const
Countrycountry() const
QStringcreateSeparatedList(const QStringList & list) const
QStringcurrencySymbol(CurrencySymbolFormat format = CurrencySymbol) const
QStringdateFormat(FormatType format = LongFormat) const
QStringdateTimeFormat(FormatType format = LongFormat) const
QStringdayName(int day, FormatType type = LongFormat) const
QChardecimalPoint() const
QCharexponential() const
Qt::DayOfWeekfirstDayOfWeek() const
QChargroupSeparator() const
Languagelanguage() const
MeasurementSystemmeasurementSystem() const
QStringmonthName(int month, FormatType type = LongFormat) const
QStringname() const
QStringnativeCountryName() const
QStringnativeLanguageName() const
QCharnegativeSign() const
NumberOptionsnumberOptions() const
QCharpercent() const
QStringpmText() const
QCharpositiveSign() const
QStringquoteString(const QString & str, QuotationStyle style = StandardQuotation) const
QStringquoteString(const QStringRef & str, QuotationStyle style = StandardQuotation) const
Scriptscript() const
voidsetNumberOptions(NumberOptions options)
QStringstandaloneDayName(int day, FormatType type = LongFormat) const
QStringstandaloneMonthName(int month, FormatType type = LongFormat) const
Qt::LayoutDirectiontextDirection() const
QStringtimeFormat(FormatType format = LongFormat) const
QStringtoCurrencyString(qlonglong value, const QString & symbol = QString()) const
QStringtoCurrencyString(qulonglong value, const QString & symbol = QString()) const
QStringtoCurrencyString(double value, const QString & symbol = QString()) const
QStringtoCurrencyString(short value, const QString & symbol = QString()) const
QStringtoCurrencyString(ushort value, const QString & symbol = QString()) const
QStringtoCurrencyString(int value, const QString & symbol = QString()) const
QStringtoCurrencyString(uint value, const QString & symbol = QString()) const
QStringtoCurrencyString(float value, const QString & symbol = QString()) const
QDatetoDate(const QString & string, FormatType format = LongFormat) const
QDatetoDate(const QString & string, const QString & format) const
QDateTimetoDateTime(const QString & string, FormatType format = LongFormat) const
QDateTimetoDateTime(const QString & string, const QString & format) const
doubletoDouble(const QString & s, bool * ok = 0) const
floattoFloat(const QString & s, bool * ok = 0) const
inttoInt(const QString & s, bool * ok = 0, int base = 0) const
qlonglongtoLongLong(const QString & s, bool * ok = 0, int base = 0) const
QStringtoLower(const QString & str) const
shorttoShort(const QString & s, bool * ok = 0, int base = 0) const
QStringtoString(qlonglong i) const
QStringtoString(const QDate & date, const QString & format) const
QStringtoString(const QDate & date, FormatType format = LongFormat) const
QStringtoString(const QTime & time, const QString & format) const
QStringtoString(const QTime & time, FormatType format = LongFormat) const
QStringtoString(const QDateTime & dateTime, FormatType format = LongFormat) const
QStringtoString(const QDateTime & dateTime, const QString & format) const
QStringtoString(qulonglong i) const
QStringtoString(double i, char f = 'g', int prec = 6) const
QStringtoString(short i) const
QStringtoString(ushort i) const
QStringtoString(int i) const
QStringtoString(uint i) const
QStringtoString(float i, char f = 'g', int prec = 6) const
QTimetoTime(const QString & string, FormatType format = LongFormat) const
QTimetoTime(const QString & string, const QString & format) const
uinttoUInt(const QString & s, bool * ok = 0, int base = 0) const
qlonglongtoULongLong(const QString & s, bool * ok = 0, int base = 0) const
ushorttoUShort(const QString & s, bool * ok = 0, int base = 0) const
QStringtoUpper(const QString & str) const
QStringListuiLanguages() const
QList<Qt::DayOfWeek>weekdays() const
QCharzeroDigit() const
booloperator!=(const QLocale & other) const
QLocale &operator=(const QLocale & other)
booloperator==(const QLocale & other) const

Static Public Members

QLocalec()
QStringcountryToString(Country country)
QStringlanguageToString(Language language)
QList<QLocale>matchingLocales(QLocale::Language language, QLocale::Script script, QLocale::Country country)
QStringscriptToString(Script script)
voidsetDefault(const QLocale & locale)
QLocalesystem()

Detailed Description

TheQLocale class converts between numbers and their string representations in various languages.

QLocale is initialized with a language/country pair in its constructor and offers number-to-string and string-to-number conversion functions similar to those inQString.

Example:

QLocale egyptian(QLocale::Arabic,QLocale::Egypt);QString s1= egyptian.toString(1.571429E+07,'e');QString s2= egyptian.toString(10);double d= egyptian.toDouble(s1);int i= egyptian.toInt(s2);

QLocale supports the concept of a default locale, which is determined from the system's locale settings at application startup. The default locale can be changed by calling the static membersetDefault(). Setting the default locale has the following effects:

  • If aQLocale object is constructed with the default constructor, it will use the default locale's settings.
  • QString::toInt(),QString::toDouble(), etc., interpret the string according to the default locale. If this fails, it falls back on the "C" locale.
  • QString::arg() uses the default locale to format a number when its position specifier in the format string contains an 'L', e.g. "%L1".

The following example illustrates how to useQLocale directly:

QLocale::setDefault(QLocale(QLocale::Hebrew,QLocale::Israel));QLocale hebrew;// Constructs a default QLocaleQString s1= hebrew.toString(15714.3,'e');bool ok;double d;QLocale::setDefault(QLocale::C);d=QString("1234,56").toDouble(&ok);// ok == falsed=QString("1234.56").toDouble(&ok);// ok == true, d == 1234.56QLocale::setDefault(QLocale::German);d=QString("1234,56").toDouble(&ok);// ok == true, d == 1234.56d=QString("1234.56").toDouble(&ok);// ok == true, d == 1234.56QLocale::setDefault(QLocale(QLocale::English,QLocale::UnitedStates));str=QString("%1 %L2 %L3").arg(12345).arg(12345).arg(12345,0,16);// str == "12345 12,345 3039"

When a language/country pair is specified in the constructor, one of three things can happen:

  • If the language/country pair is found in the database, it is used.
  • If the language is found but the country is not, or if the country isAnyCountry, the language is used with the most appropriate available country (for example, Germany for German),
  • If neither the language nor the country are found,QLocale defaults to the default locale (seesetDefault()).

Uselanguage() andcountry() to determine the actual language and country values used.

An alternative method for constructing aQLocale object is by specifying the locale name.

QLocale korean("ko");QLocale swiss("de_CH");

This constructor converts the locale name to a language/country pair; it does not use the system locale database.

Note:For the current keyboard input locale take a look atQApplication::keyboardInputLocale().

QLocale's data is based on Common Locale Data Repository v2.0.

The double-to-string and string-to-double conversion functions are covered by the following licenses:

Copyright (c) 1991 by AT&T.

Permission to use, copy, modify, and distribute this software for any purpose without fee is hereby granted, provided that this entire notice is included in all copies of any software which is or includes a copy or modification of this software and in all copies of the supporting documentation for such software.

THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED WARRANTY. IN PARTICULAR, NEITHER THE AUTHOR NOR AT&T MAKES ANY REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.

This product includes software developed by the University of California, Berkeley and its contributors.

See alsoQString::arg(),QString::toInt(),QString::toDouble(), andQApplication::keyboardInputLocale().

Member Type Documentation

enum QLocale::Country

This enumerated type is used to specify a country.

ConstantValue
QLocale::AnyCountry0
QLocale::Afghanistan1
QLocale::Albania2
QLocale::Algeria3
QLocale::AmericanSamoa4
QLocale::Andorra5
QLocale::Angola6
QLocale::Anguilla7
QLocale::Antarctica8
QLocale::AntiguaAndBarbuda9
QLocale::Argentina10
QLocale::Armenia11
QLocale::Aruba12
QLocale::Australia13
QLocale::Austria14
QLocale::Azerbaijan15
QLocale::Bahamas16
QLocale::Bahrain17
QLocale::Bangladesh18
QLocale::Barbados19
QLocale::Belarus20
QLocale::Belgium21
QLocale::Belize22
QLocale::Benin23
QLocale::Bermuda24
QLocale::Bhutan25
QLocale::Bolivia26
QLocale::BosniaAndHerzegowina27
QLocale::Botswana28
QLocale::BouvetIsland29
QLocale::Brazil30
QLocale::BritishIndianOceanTerritory31
QLocale::BruneiDarussalam32
QLocale::Bulgaria33
QLocale::BurkinaFaso34
QLocale::Burundi35
QLocale::Cambodia36
QLocale::Cameroon37
QLocale::Canada38
QLocale::CapeVerde39
QLocale::CaymanIslands40
QLocale::CentralAfricanRepublic41
QLocale::Chad42
QLocale::Chile43
QLocale::China44
QLocale::ChristmasIsland45
QLocale::CocosIslands46
QLocale::Colombia47
QLocale::Comoros48
QLocale::DemocraticRepublicOfCongo49
QLocale::PeoplesRepublicOfCongo50
QLocale::CookIslands51
QLocale::CostaRica52
QLocale::IvoryCoast53
QLocale::Croatia54
QLocale::Cuba55
QLocale::Cyprus56
QLocale::CzechRepublic57
QLocale::Denmark58
QLocale::Djibouti59
QLocale::Dominica60
QLocale::DominicanRepublic61
QLocale::EastTimor62
QLocale::Ecuador63
QLocale::Egypt64
QLocale::ElSalvador65
QLocale::EquatorialGuinea66
QLocale::Eritrea67
QLocale::Estonia68
QLocale::Ethiopia69
QLocale::FalklandIslands70
QLocale::FaroeIslands71
QLocale::FijiCountry72
QLocale::Finland73
QLocale::France74
QLocale::MetropolitanFrance75
QLocale::FrenchGuiana76
QLocale::FrenchPolynesia77
QLocale::FrenchSouthernTerritories78
QLocale::Gabon79
QLocale::Gambia80
QLocale::Georgia81
QLocale::Germany82
QLocale::Ghana83
QLocale::Gibraltar84
QLocale::Greece85
QLocale::Greenland86
QLocale::Grenada87
QLocale::Guadeloupe88
QLocale::Guam89
QLocale::Guatemala90
QLocale::Guinea91
QLocale::GuineaBissau92
QLocale::Guyana93
QLocale::Haiti94
QLocale::HeardAndMcDonaldIslands95
QLocale::Honduras96
QLocale::HongKong97
QLocale::Hungary98
QLocale::Iceland99
QLocale::India100
QLocale::Indonesia101
QLocale::Iran102
QLocale::Iraq103
QLocale::Ireland104
QLocale::Israel105
QLocale::Italy106
QLocale::Jamaica107
QLocale::Japan108
QLocale::Jordan109
QLocale::Kazakhstan110
QLocale::Kenya111
QLocale::Kiribati112
QLocale::DemocraticRepublicOfKorea113
QLocale::RepublicOfKorea114
QLocale::Kuwait115
QLocale::Kyrgyzstan116
QLocale::Lao117
QLocale::Latvia118
QLocale::Lebanon119
QLocale::Lesotho120
QLocale::Liberia121
QLocale::LibyanArabJamahiriya122
QLocale::Liechtenstein123
QLocale::Lithuania124
QLocale::Luxembourg125
QLocale::Macau126
QLocale::Macedonia127
QLocale::Madagascar128
QLocale::Malawi129
QLocale::Malaysia130
QLocale::Maldives131
QLocale::Mali132
QLocale::Malta133
QLocale::MarshallIslands134
QLocale::Martinique135
QLocale::Mauritania136
QLocale::Mauritius137
QLocale::Mayotte138
QLocale::Mexico139
QLocale::Micronesia140
QLocale::Moldova141
QLocale::Monaco142
QLocale::Mongolia143
QLocale::Montserrat144
QLocale::Morocco145
QLocale::Mozambique146
QLocale::Myanmar147
QLocale::Namibia148
QLocale::NauruCountry149
QLocale::Nepal150
QLocale::Netherlands151
QLocale::NetherlandsAntilles152
QLocale::NewCaledonia153
QLocale::NewZealand154
QLocale::Nicaragua155
QLocale::Niger156
QLocale::Nigeria157
QLocale::Niue158
QLocale::NorfolkIsland159
QLocale::NorthernMarianaIslands160
QLocale::Norway161
QLocale::Oman162
QLocale::Pakistan163
QLocale::Palau164
QLocale::PalestinianTerritory165
QLocale::Panama166
QLocale::PapuaNewGuinea167
QLocale::Paraguay168
QLocale::Peru169
QLocale::Philippines170
QLocale::Pitcairn171
QLocale::Poland172
QLocale::Portugal173
QLocale::PuertoRico174
QLocale::Qatar175
QLocale::Reunion176
QLocale::Romania177
QLocale::RussianFederation178
QLocale::Rwanda179
QLocale::SaintKittsAndNevis180
QLocale::StLucia181
QLocale::StVincentAndTheGrenadines182
QLocale::Samoa183
QLocale::SanMarino184
QLocale::SaoTomeAndPrincipe185
QLocale::SaudiArabia186
QLocale::Senegal187
QLocale::SerbiaAndMontenegro241
QLocale::Seychelles188
QLocale::SierraLeone189
QLocale::Singapore190
QLocale::Slovakia191
QLocale::Slovenia192
QLocale::SolomonIslands193
QLocale::Somalia194
QLocale::SouthAfrica195
QLocale::SouthGeorgiaAndTheSouthSandwichIslands196
QLocale::Spain197
QLocale::SriLanka198
QLocale::StHelena199
QLocale::StPierreAndMiquelon200
QLocale::Sudan201
QLocale::Suriname202
QLocale::SvalbardAndJanMayenIslands203
QLocale::Swaziland204
QLocale::Sweden205
QLocale::Switzerland206
QLocale::SyrianArabRepublic207
QLocale::Taiwan208
QLocale::Tajikistan209
QLocale::Tanzania210
QLocale::Thailand211
QLocale::Togo212
QLocale::Tokelau213
QLocale::TongaCountry214
QLocale::TrinidadAndTobago215
QLocale::Tunisia216
QLocale::Turkey217
QLocale::Turkmenistan218
QLocale::TurksAndCaicosIslands219
QLocale::Tuvalu220
QLocale::Uganda221
QLocale::Ukraine222
QLocale::UnitedArabEmirates223
QLocale::UnitedKingdom224
QLocale::UnitedStates225
QLocale::UnitedStatesMinorOutlyingIslands226
QLocale::Uruguay227
QLocale::Uzbekistan228
QLocale::Vanuatu229
QLocale::VaticanCityState230
QLocale::Venezuela231
QLocale::VietNam232
QLocale::BritishVirginIslands233
QLocale::USVirginIslands234
QLocale::WallisAndFutunaIslands235
QLocale::WesternSahara236
QLocale::Yemen237
QLocale::Yugoslavia238
QLocale::Zambia239
QLocale::Zimbabwe240
QLocale::Montenegro242
QLocale::Serbia243
QLocale::SaintBarthelemy244
QLocale::SaintMartin245
QLocale::LatinAmericaAndTheCaribbean246

See alsocountry() andcountryToString().

enum QLocale::CurrencySymbolFormat

Specifies the format of the currency symbol.

ConstantValueDescription
QLocale::CurrencyIsoCode0a ISO-4217 code of the currency.
QLocale::CurrencySymbol1a currency symbol.
QLocale::CurrencyDisplayName2a user readable name of the currency.

This enum was introduced or modified in Qt 4.8.

enum QLocale::FormatType

This enum describes the types of format that can be used when convertingQDate andQTime objects to strings.

ConstantValueDescription
QLocale::LongFormat0The long version of day and month names; for example, returning "January" as a month name.
QLocale::ShortFormat1The short version of day and month names; for example, returning "Jan" as a month name.
QLocale::NarrowFormat2A special version of day and month names for use when space is limited; for example, returning "J" as a month name. Note that the narrow format might contain the same text for different months and days or it can even be an empty string if the locale doesn't support narrow names, so you should avoid using it for date formatting. Also, for the system locale this format is the same as ShortFormat.

enum QLocale::Language

This enumerated type is used to specify a language.

ConstantValueDescription
QLocale::AnyLanguage0 
QLocale::C1The "C" locale is identical in behavior to English/UnitedStates.
QLocale::Abkhazian2 
QLocale::Afan3 
QLocale::Afar4 
QLocale::Afrikaans5 
QLocale::Albanian6 
QLocale::Amharic7 
QLocale::Arabic8 
QLocale::Armenian9 
QLocale::Assamese10 
QLocale::Aymara11 
QLocale::Azerbaijani12 
QLocale::Bashkir13 
QLocale::Basque14 
QLocale::Bengali15 
QLocale::Bhutani16 
QLocale::Bihari17 
QLocale::Bislama18 
QLocale::Bosnian142 
QLocale::Breton19 
QLocale::Bulgarian20 
QLocale::Burmese21 
QLocale::Byelorussian22 
QLocale::Cambodian23 
QLocale::Catalan24 
QLocale::Chinese25 
QLocale::Cornish145 
QLocale::Corsican26 
QLocale::Croatian27 
QLocale::Czech28 
QLocale::Danish29 
QLocale::Divehi143 
QLocale::Dutch30 
QLocale::English31 
QLocale::Esperanto32 
QLocale::Estonian33 
QLocale::Faroese34 
QLocale::FijiLanguage35 
QLocale::Finnish36 
QLocale::French37 
QLocale::Frisian38 
QLocale::Gaelic39 
QLocale::Galician40 
QLocale::Georgian41 
QLocale::German42 
QLocale::Greek43 
QLocale::Greenlandic44 
QLocale::Guarani45 
QLocale::Gujarati46 
QLocale::Hausa47 
QLocale::Hebrew48 
QLocale::Hindi49 
QLocale::Hungarian50 
QLocale::Icelandic51 
QLocale::Indonesian52 
QLocale::Interlingua53 
QLocale::Interlingue54 
QLocale::Inuktitut55 
QLocale::Inupiak56 
QLocale::Irish57 
QLocale::Italian58 
QLocale::Japanese59 
QLocale::Javanese60 
QLocale::Kannada61 
QLocale::Kashmiri62 
QLocale::Kazakh63 
QLocale::Kinyarwanda64 
QLocale::Kirghiz65 
QLocale::Korean66 
QLocale::Kurdish67 
QLocale::KurundiRundi 
QLocale::Laothian69 
QLocale::Latin70 
QLocale::Latvian71 
QLocale::Lingala72 
QLocale::Lithuanian73 
QLocale::Macedonian74 
QLocale::Malagasy75 
QLocale::Malay76 
QLocale::Malayalam77 
QLocale::Maltese78 
QLocale::Manx144 
QLocale::Maori79 
QLocale::Marathi80 
QLocale::Moldavian81 
QLocale::Mongolian82 
QLocale::NauruLanguage83 
QLocale::Nepali84 
QLocale::Norwegian85 
QLocale::NorwegianBokmalNorwegian 
QLocale::Nynorsk141Obsolete, please use NorwegianNynorsk
QLocale::NorwegianNynorskNynorsk 
QLocale::Occitan86 
QLocale::Oriya87 
QLocale::Pashto88 
QLocale::Persian89 
QLocale::Polish90 
QLocale::Portuguese91 
QLocale::Punjabi92 
QLocale::Quechua93 
QLocale::RhaetoRomance94 
QLocale::Romanian95 
QLocale::Russian96 
QLocale::Samoan97 
QLocale::Sangho98 
QLocale::Sanskrit99 
QLocale::Serbian100 
QLocale::SerboCroatian101 
QLocale::Sesotho102 
QLocale::Setswana103 
QLocale::Shona104 
QLocale::Sindhi105 
QLocale::Singhalese106 
QLocale::Siswati107 
QLocale::Slovak108 
QLocale::Slovenian109 
QLocale::Somali110 
QLocale::Spanish111 
QLocale::Sundanese112 
QLocale::Swahili113 
QLocale::Swedish114 
QLocale::Tagalog115 
QLocale::Tajik116 
QLocale::Tamil117 
QLocale::Tatar118 
QLocale::Telugu119 
QLocale::Thai120 
QLocale::Tibetan121 
QLocale::Tigrinya122 
QLocale::TongaLanguage123 
QLocale::Tsonga124 
QLocale::Turkish125 
QLocale::Turkmen126 
QLocale::Twi127 
QLocale::Uigur128 
QLocale::Ukrainian129 
QLocale::Urdu130 
QLocale::Uzbek131 
QLocale::Vietnamese132 
QLocale::Volapuk133 
QLocale::Welsh134 
QLocale::Wolof135 
QLocale::Xhosa136 
QLocale::Yiddish137 
QLocale::Yoruba138 
QLocale::Zhuang139 
QLocale::Zulu140 
QLocale::Bosnian142 
QLocale::Divehi143 
QLocale::Manx144 
QLocale::Cornish145 
QLocale::Akan146 
QLocale::Konkani147 
QLocale::Ga148 
QLocale::Igbo149 
QLocale::Kamba150 
QLocale::Syriac151 
QLocale::Blin152 
QLocale::Geez153 
QLocale::Koro154 
QLocale::Sidamo155 
QLocale::Atsam156 
QLocale::Tigre157 
QLocale::Jju158 
QLocale::Friulian159 
QLocale::Venda160 
QLocale::Ewe161 
QLocale::Walamo162 
QLocale::Hawaiian163 
QLocale::Tyap164 
QLocale::Chewa165 
QLocale::Filipino166 
QLocale::SwissGerman167 
QLocale::SichuanYi168 
QLocale::Kpelle169 
QLocale::LowGerman170 
QLocale::SouthNdebele171 
QLocale::NorthernSotho172 
QLocale::NorthernSami173 
QLocale::Taroko174 
QLocale::Gusii175 
QLocale::Taita176 
QLocale::Fulah177 
QLocale::Kikuyu178 
QLocale::Samburu179 
QLocale::Sena180 
QLocale::NorthNdebele181 
QLocale::Rombo182 
QLocale::Tachelhit183 
QLocale::Kabyle184 
QLocale::Nyankole185 
QLocale::Bena186 
QLocale::Vunjo187 
QLocale::Bambara188 
QLocale::Embu189 
QLocale::Cherokee190 
QLocale::Morisyen191 
QLocale::Makonde192 
QLocale::Langi193 
QLocale::Ganda194 
QLocale::Bemba195 
QLocale::Kabuverdianu196 
QLocale::Meru197 
QLocale::Kalenjin198 
QLocale::Nama199 
QLocale::Machame200 
QLocale::Colognian201 
QLocale::Masai202 
QLocale::Soga203 
QLocale::Luyia204 
QLocale::Asu205 
QLocale::Teso206 
QLocale::Saho207 
QLocale::KoyraChiini208 
QLocale::Rwa209 
QLocale::Luo210 
QLocale::Chiga211 
QLocale::CentralMoroccoTamazight212 
QLocale::KoyraboroSenni213 
QLocale::Shambala214 

See alsolanguage() andlanguageToString().

enum QLocale::MeasurementSystem

This enum defines which units are used for measurement.

ConstantValueDescription
QLocale::MetricSystem0This value indicates metric units, such as meters, centimeters and millimeters.
QLocale::ImperialSystem1This value indicates imperial units, such as inches and miles. There are several distinct imperial systems in the world; this value stands for the official United States imperial units.

This enum was introduced or modified in Qt 4.4.

enum QLocale::NumberOption
flags QLocale::NumberOptions

This enum defines a set of options for number-to-string and string-to-number conversions. They can be retrieved withnumberOptions() and set withsetNumberOptions().

ConstantValueDescription
QLocale::OmitGroupSeparator0x01If this option is set, the number-to-string functions will not insert group separators in their return values. The default is to insert group separators.
QLocale::RejectGroupSeparator0x02If this option is set, the string-to-number functions will fail if they encounter group separators in their input. The default is to accept numbers containing correctly placed group separators.

The NumberOptions type is a typedef forQFlags<NumberOption>. It stores an OR combination of NumberOption values.

See alsosetNumberOptions() andnumberOptions().

enum QLocale::QuotationStyle

This enum defines a set of possible styles for locale specific quotation.

ConstantValueDescription
QLocale::StandardQuotation0If this option is set, the standard quotation marks will be used to quote strings.
QLocale::AlternateQuotation1If this option is set, the alternate quotation marks will be used to quote strings.

This enum was introduced or modified in Qt 4.8.

See alsoquoteString().

enum QLocale::Script

This enumerated type is used to specify a script.

ConstantValueDescription
QLocale::AnyScript0 
QLocale::ArabicScript1 
QLocale::CyrillicScript2 
QLocale::DeseretScript3 
QLocale::GurmukhiScript4 
QLocale::SimplifiedHanScript5same as SimplifiedChineseScript
QLocale::SimplifiedChineseScriptSimplifiedHanScriptsame as SimplifiedHanScript
QLocale::TraditionalHanScript6same as TraditionalChineseScript
QLocale::TraditionalChineseScriptTraditionalHanScriptsame as TraditionalHanScript
QLocale::LatinScript7 
QLocale::MongolianScript8 
QLocale::TifinaghScript9 

This enum was introduced or modified in Qt 4.8.

See alsoscript(),scriptToString(), andlanguageToString().

Member Function Documentation

QLocale::QLocale()

Constructs aQLocale object initialized with the default locale. If no default locale was set using setDefaultLocale(), this locale will be the same as the one returned bysystem().

See alsosetDefault().

QLocale::QLocale(constQString & name)

Constructs aQLocale object with the specifiedname, which has the format "language[_script][_country][.codeset][@modifier]" or "C", where:

  • language is a lowercase, two-letter, ISO 639 language code,
  • script is a titlecase, four-letter, ISO 15924 script code,
  • country is an uppercase, two- or three-letter, ISO 3166 country code (also "419" as defined by United Nations),
  • and codeset and modifier are ignored.

The separator can be either underscore or a minus sign.

If the string violates the locale format, or language is not a valid ISO 369 code, the "C" locale is used instead. If country is not present, or is not a valid ISO 3166 code, the most appropriate country is chosen for the specified language.

The language, script and country codes are converted to their respectiveLanguage,Script andCountry enums. After this conversion is performed the constructor behaves exactly likeQLocale(Country, Script, Language).

This constructor is much slower thanQLocale(Country, Script, Language).

See alsobcp47Name().

QLocale::QLocale(Language language,Country country = AnyCountry)

Constructs aQLocale object with the specifiedlanguage andcountry.

  • If the language/country pair is found in the database, it is used.
  • If the language is found but the country is not, or if the country isAnyCountry, the language is used with the most appropriate available country (for example, Germany for German),
  • If neither the language nor the country are found,QLocale defaults to the default locale (seesetDefault()).

The language and country that are actually used can be queried usinglanguage() andcountry().

See alsosetDefault(),language(), andcountry().

QLocale::QLocale(Language language,Script script,Country country)

Constructs aQLocale object with the specifiedlanguage,script andcountry.

  • If the language/script/country is found in the database, it is used.
  • If bothscript isAnyScript andcountry isAnyCountry, the language is used with the most appropriate available script and country (for example, Germany for German),
  • If eitherscript isAnyScript orcountry isAnyCountry, the language is used with the first locale that matches the givenscript andcountry.
  • If neither the language nor the country are found,QLocale defaults to the default locale (seesetDefault()).

The language, script and country that are actually used can be queried usinglanguage(),script() andcountry().

This function was introduced in Qt 4.8.

See alsosetDefault(),language(),script(), andcountry().

QLocale::QLocale(constQLocale & other)

Constructs aQLocale object as a copy ofother.

QString QLocale::amText() const

Returns the localized name of the "AM" suffix for times specified using the conventions of the 12-hour clock.

This function was introduced in Qt 4.5.

See alsopmText().

QString QLocale::bcp47Name() const

Returns the dash-separated language, script and country (and possibly other BCP47 fields) of this locale as a string.

Unlike theuiLanguages() the returned value of the bcp47Name() represents the locale name of theQLocale data but not the language the user-interface should be in.

This function tries to conform the locale name to BCP47.

This function was introduced in Qt 4.8.

See alsolanguage(),country(),script(), anduiLanguages().

[static]QLocale QLocale::c()

Returns aQLocale object initialized to the "C" locale.

See alsosystem().

Country QLocale::country() const

Returns the country of this locale.

See alsolanguage(),script(),countryToString(), andbcp47Name().

[static]QString QLocale::countryToString(Country country)

Returns aQString containing the name ofcountry.

See alsolanguageToString(),scriptToString(),country(), andbcp47Name().

QString QLocale::createSeparatedList(constQStringList & list) const

Returns a string that represents a join of a givenlist of strings with a separator defined by the locale.

This function was introduced in Qt 4.8.

QString QLocale::currencySymbol(CurrencySymbolFormat format = CurrencySymbol) const

Returns a currency symbol according to theformat.

This function was introduced in Qt 4.8.

QString QLocale::dateFormat(FormatType format = LongFormat) const

Returns the date format used for the current locale.

Ifformat isLongFormat the format will be a long version. Otherwise it uses a shorter version.

This function was introduced in Qt 4.1.

See alsoQDate::toString() andQDate::fromString().

QString QLocale::dateTimeFormat(FormatType format = LongFormat) const

Returns the date time format used for the current locale.

Ifformat isShortFormat the format will be a short version. Otherwise it uses a longer version.

This function was introduced in Qt 4.4.

See alsoQDateTime::toString() andQDateTime::fromString().

QString QLocale::dayName(int day,FormatType type = LongFormat) const

Returns the localized name of theday (where 1 represents Monday, 2 represents Tuesday and so on), in the format specified bytype.

This function was introduced in Qt 4.2.

See alsomonthName() andstandaloneDayName().

QChar QLocale::decimalPoint() const

Returns the decimal point character of this locale.

This function was introduced in Qt 4.1.

QChar QLocale::exponential() const

Returns the exponential character of this locale.

This function was introduced in Qt 4.1.

Qt::DayOfWeek QLocale::firstDayOfWeek() const

Returns the first day of the week according to the current locale.

This function was introduced in Qt 4.8.

QChar QLocale::groupSeparator() const

Returns the group separator character of this locale.

This function was introduced in Qt 4.1.

Language QLocale::language() const

Returns the language of this locale.

See alsoscript(),country(),languageToString(), andbcp47Name().

[static]QString QLocale::languageToString(Language language)

Returns aQString containing the name oflanguage.

See alsocountryToString(),scriptToString(), andbcp47Name().

[static]QList<QLocale> QLocale::matchingLocales(QLocale::Language language,QLocale::Script script,QLocale::Country country)

Returns a list of valid locale objects that match the givenlanguage,script andcountry.

Getting a list of all locales:QList<QLocale> allLocales = QLocale::matchingLocales(QLocale::AnyLanguage,QLocale::AnyScript,QLocale::AnyCountry);

This function was introduced in Qt 4.8.

MeasurementSystem QLocale::measurementSystem() const

Returns the measurement system for the locale.

This function was introduced in Qt 4.4.

QString QLocale::monthName(int month,FormatType type = LongFormat) const

Returns the localized name ofmonth, in the format specified bytype.

This function was introduced in Qt 4.2.

See alsodayName() andstandaloneMonthName().

QString QLocale::name() const

Returns the language and country of this locale as a string of the form "language_country", where language is a lowercase, two-letter ISO 639 language code, and country is an uppercase, two- or three-letter ISO 3166 country code.

Note that even ifQLocale object was constructed with an explicit script, name() will not contain it for compatibility reasons. Usebcp47Name() instead if you need a full locale name.

See alsoQLocale(),language(),script(),country(), andbcp47Name().

QString QLocale::nativeCountryName() const

Returns a native name of the country for the locale. For example "España" for Spanish/Spain locale.

This function was introduced in Qt 4.8.

See alsonativeLanguageName() andcountryToString().

QString QLocale::nativeLanguageName() const

Returns a native name of the language for the locale. For example "Schwiizertüütsch" for Swiss-German locale.

This function was introduced in Qt 4.8.

See alsonativeCountryName() andlanguageToString().

QChar QLocale::negativeSign() const

Returns the negative sign character of this locale.

This function was introduced in Qt 4.1.

NumberOptions QLocale::numberOptions() const

Returns the options related to number conversions for thisQLocale instance.

By default, no options are set for the standard locales.

This function was introduced in Qt 4.2.

See alsosetNumberOptions().

QChar QLocale::percent() const

Returns the percent character of this locale.

This function was introduced in Qt 4.1.

QString QLocale::pmText() const

Returns the localized name of the "PM" suffix for times specified using the conventions of the 12-hour clock.

This function was introduced in Qt 4.5.

See alsoamText().

QChar QLocale::positiveSign() const

Returns the positive sign character of this locale.

This function was introduced in Qt 4.5.

QString QLocale::quoteString(constQString & str,QuotationStyle style = StandardQuotation) const

Returnsstr quoted according to the current locale using the given quotationstyle.

This function was introduced in Qt 4.8.

QString QLocale::quoteString(constQStringRef & str,QuotationStyle style = StandardQuotation) const

This is an overloaded function.

This function was introduced in Qt 4.8.

Script QLocale::script() const

Returns the script of this locale.

This function was introduced in Qt 4.8.

See alsolanguage(),country(),languageToString(),scriptToString(), andbcp47Name().

[static]QString QLocale::scriptToString(Script script)

Returns aQString containing the name ofscript.

This function was introduced in Qt 4.8.

See alsolanguageToString(),countryToString(),script(), andbcp47Name().

[static]void QLocale::setDefault(constQLocale & locale)

Sets the global default locale tolocale. These values are used when aQLocale object is constructed with no arguments. If this function is not called, the system's locale is used.

Warning: In a multithreaded application, the default locale should be set at application startup, before any non-GUI threads are created.

Warning: This function is notreentrant.

See alsosystem() andc().

void QLocale::setNumberOptions(NumberOptions options)

Sets theoptions related to number conversions for thisQLocale instance.

This function was introduced in Qt 4.2.

See alsonumberOptions().

QString QLocale::standaloneDayName(int day,FormatType type = LongFormat) const

Returns the localized name of theday (where 1 represents Monday, 2 represents Tuesday and so on) that is used as a standalone text, in the format specified bytype.

If the locale information does not specify the standalone day name then return value is the same as indayName().

This function was introduced in Qt 4.5.

See alsodayName() andstandaloneMonthName().

QString QLocale::standaloneMonthName(int month,FormatType type = LongFormat) const

Returns the localized name ofmonth that is used as a standalone text, in the format specified bytype.

If the locale information doesn't specify the standalone month name then return value is the same as inmonthName().

This function was introduced in Qt 4.5.

See alsomonthName() andstandaloneDayName().

[static]QLocale QLocale::system()

Returns aQLocale object initialized to the system locale.

On Windows and Mac, this locale will use the decimal/grouping characters and date/time formats specified in the system configuration panel.

See alsoc().

Qt::LayoutDirection QLocale::textDirection() const

Returns the text direction of the language.

This function was introduced in Qt 4.7.

QString QLocale::timeFormat(FormatType format = LongFormat) const

Returns the time format used for the current locale.

Ifformat isLongFormat the format will be a long version. Otherwise it uses a shorter version.

This function was introduced in Qt 4.1.

See alsoQTime::toString() andQTime::fromString().

QString QLocale::toCurrencyString(qlonglong value, constQString & symbol = QString()) const

Returns a localized string representation ofvalue as a currency. If thesymbol is provided it is used instead of the default currency symbol.

This function was introduced in Qt 4.8.

See alsocurrencySymbol().

QString QLocale::toCurrencyString(qulonglong value, constQString & symbol = QString()) const

This is an overloaded function.

This function was introduced in Qt 4.8.

QString QLocale::toCurrencyString(double value, constQString & symbol = QString()) const

This is an overloaded function.

This function was introduced in Qt 4.8.

QString QLocale::toCurrencyString(short value, constQString & symbol = QString()) const

This is an overloaded function.

This function was introduced in Qt 4.8.

QString QLocale::toCurrencyString(ushort value, constQString & symbol = QString()) const

This is an overloaded function.

This function was introduced in Qt 4.8.

QString QLocale::toCurrencyString(int value, constQString & symbol = QString()) const

This is an overloaded function.

This function was introduced in Qt 4.8.

QString QLocale::toCurrencyString(uint value, constQString & symbol = QString()) const

This is an overloaded function.

This function was introduced in Qt 4.8.

QString QLocale::toCurrencyString(float value, constQString & symbol = QString()) const

This is an overloaded function.

This function was introduced in Qt 4.8.

QDate QLocale::toDate(constQString & string,FormatType format = LongFormat) const

Parses the date string given instring and returns the date. The format of the date string is chosen according to theformat parameter (seedateFormat()).

If the date could not be parsed, returns an invalid date.

This function was introduced in Qt 4.4.

See alsodateFormat(),toTime(),toDateTime(), andQDate::fromString().

QDate QLocale::toDate(constQString & string, constQString & format) const

Parses the date string given instring and returns the date. SeeQDate::fromString() for information on the expressions that can be used with this function.

This function searches month names and the names of the days of the week in the current locale.

If the date could not be parsed, returns an invalid date.

This function was introduced in Qt 4.4.

See alsodateFormat(),toTime(),toDateTime(), andQDate::fromString().

QDateTime QLocale::toDateTime(constQString & string,FormatType format = LongFormat) const

Parses the date/time string given instring and returns the time. The format of the date/time string is chosen according to theformat parameter (seedateTimeFormat()).

If the string could not be parsed, returns an invalidQDateTime.

This function was introduced in Qt 4.4.

See alsodateTimeFormat(),toTime(),toDate(), andQDateTime::fromString().

QDateTime QLocale::toDateTime(constQString & string, constQString & format) const

Parses the date/time string given instring and returns the time. SeeQDateTime::fromString() for information on the expressions that can be used with this function.

Note:The month and day names used must be given in the user's local language.

If the string could not be parsed, returns an invalidQDateTime.

This function was introduced in Qt 4.4.

See alsodateTimeFormat(),toTime(),toDate(), andQDateTime::fromString().

double QLocale::toDouble(constQString & s,bool * ok = 0) const

Returns the double represented by the localized strings, or 0.0 if the conversion failed.

Ifok is not 0, reports failure by setting *ok to false and success by setting *ok to true.

UnlikeQString::toDouble(), this function does not fall back to the "C" locale if the string cannot be interpreted in this locale.

bool ok;double d;QLocalec(QLocale::C);d= c.toDouble("1234.56",&ok );// ok == true, d == 1234.56d= c.toDouble("1,234.56",&ok );// ok == true, d == 1234.56d= c.toDouble("1234,56",&ok );// ok == falseQLocale german(QLocale::German);d= german.toDouble("1234,56",&ok );// ok == true, d == 1234.56d= german.toDouble("1.234,56",&ok );// ok == true, d == 1234.56d= german.toDouble("1234.56",&ok );// ok == falsed= german.toDouble("1.234",&ok );// ok == true, d == 1234.0

Notice that the last conversion returns 1234.0, because '.' is the thousands group separator in the German locale.

This function ignores leading and trailing whitespace.

See alsotoFloat(),toInt(), andtoString().

float QLocale::toFloat(constQString & s,bool * ok = 0) const

Returns the float represented by the localized strings, or 0.0 if the conversion failed.

Ifok is not 0, reports failure by setting *ok to false and success by setting *ok to true.

This function ignores leading and trailing whitespace.

See alsotoDouble(),toInt(), andtoString().

int QLocale::toInt(constQString & s,bool * ok = 0,int base = 0) const

Returns the int represented by the localized strings, using basebase. Ifbase is 0 the base is determined automatically using the following rules: If the string begins with "0x", it is assumed to be hexadecimal; if it begins with "0", it is assumed to be octal; otherwise it is assumed to be decimal.

If the conversion fails the function returns 0.

Ifok is not 0, failure is reported by setting *ok to false, and success by setting *ok to true.

This function ignores leading and trailing whitespace.

See alsotoUInt() andtoString().

qlonglong QLocale::toLongLong(constQString & s,bool * ok = 0,int base = 0) const

Returns the long long int represented by the localized strings, using basebase. Ifbase is 0 the base is determined automatically using the following rules: If the string begins with "0x", it is assumed to be hexadecimal; if it begins with "0", it is assumed to be octal; otherwise it is assumed to be decimal.

If the conversion fails the function returns 0.

Ifok is not 0, failure is reported by setting *ok to false, and success by setting *ok to true.

This function ignores leading and trailing whitespace.

See alsotoInt(),toULongLong(),toDouble(), andtoString().

QString QLocale::toLower(constQString & str) const

Returns a lowercase copy ofstr.

This function was introduced in Qt 4.8.

short QLocale::toShort(constQString & s,bool * ok = 0,int base = 0) const

Returns the short int represented by the localized strings, using basebase. Ifbase is 0 the base is determined automatically using the following rules: If the string begins with "0x", it is assumed to be hexadecimal; if it begins with "0", it is assumed to be octal; otherwise it is assumed to be decimal.

If the conversion fails the function returns 0.

Ifok is not 0, failure is reported by setting *ok to false, and success by setting *ok to true.

This function ignores leading and trailing whitespace.

See alsotoUShort() andtoString().

QString QLocale::toString(qlonglong i) const

Returns a localized string representation ofi.

See alsotoLongLong().

QString QLocale::toString(constQDate & date, constQString & format) const

Returns a localized string representation of the givendate in the specifiedformat. Ifformat is an empty string, an empty string is returned.

QString QLocale::toString(constQDate & date,FormatType format = LongFormat) const

Returns a localized string representation of the givendate according to the specifiedformat.

QString QLocale::toString(constQTime & time, constQString & format) const

Returns a localized string representation of the giventime according to the specifiedformat. Ifformat is an empty string, an empty string is returned.

QString QLocale::toString(constQTime & time,FormatType format = LongFormat) const

Returns a localized string representation of the giventime in the specifiedformat.

QString QLocale::toString(constQDateTime & dateTime,FormatType format = LongFormat) const

Returns a localized string representation of the givendateTime according to the specifiedformat.

This function was introduced in Qt 4.4.

QString QLocale::toString(constQDateTime & dateTime, constQString & format) const

Returns a localized string representation of the givendateTime according to the specifiedformat. Ifformat is an empty string, an empty string is returned.

This function was introduced in Qt 4.4.

QString QLocale::toString(qulonglong i) const

This is an overloaded function.

See alsotoULongLong().

QString QLocale::toString(double i,char f = 'g',int prec = 6) const

This is an overloaded function.

f andprec have the same meaning as inQString::number(double, char, int).

See alsotoDouble().

QString QLocale::toString(short i) const

This is an overloaded function.

See alsotoShort().

QString QLocale::toString(ushort i) const

This is an overloaded function.

See alsotoUShort().

QString QLocale::toString(int i) const

This is an overloaded function.

See alsotoInt().

QString QLocale::toString(uint i) const

This is an overloaded function.

See alsotoUInt().

QString QLocale::toString(float i,char f = 'g',int prec = 6) const

This is an overloaded function.

f andprec have the same meaning as inQString::number(double, char, int).

See alsotoDouble().

QTime QLocale::toTime(constQString & string,FormatType format = LongFormat) const

Parses the time string given instring and returns the time. The format of the time string is chosen according to theformat parameter (seetimeFormat()).

If the time could not be parsed, returns an invalid time.

This function was introduced in Qt 4.4.

See alsotimeFormat(),toDate(),toDateTime(), andQTime::fromString().

QTime QLocale::toTime(constQString & string, constQString & format) const

Parses the time string given instring and returns the time. SeeQTime::fromString() for information on what is a valid format string.

If the time could not be parsed, returns an invalid time.

This function was introduced in Qt 4.4.

See alsotimeFormat(),toDate(),toDateTime(), andQTime::fromString().

uint QLocale::toUInt(constQString & s,bool * ok = 0,int base = 0) const

Returns the unsigned int represented by the localized strings, using basebase. Ifbase is 0 the base is determined automatically using the following rules: If the string begins with "0x", it is assumed to be hexadecimal; if it begins with "0", it is assumed to be octal; otherwise it is assumed to be decimal.

If the conversion fails the function returns 0.

Ifok is not 0, failure is reported by setting *ok to false, and success by setting *ok to true.

This function ignores leading and trailing whitespace.

See alsotoInt() andtoString().

qlonglong QLocale::toULongLong(constQString & s,bool * ok = 0,int base = 0) const

Returns the unsigned long long int represented by the localized strings, using basebase. Ifbase is 0 the base is determined automatically using the following rules: If the string begins with "0x", it is assumed to be hexadecimal; if it begins with "0", it is assumed to be octal; otherwise it is assumed to be decimal.

If the conversion fails the function returns 0.

Ifok is not 0, failure is reported by setting *ok to false, and success by setting *ok to true.

This function ignores leading and trailing whitespace.

See alsotoLongLong(),toInt(),toDouble(), andtoString().

ushort QLocale::toUShort(constQString & s,bool * ok = 0,int base = 0) const

Returns the unsigned short int represented by the localized strings, using basebase. Ifbase is 0 the base is determined automatically using the following rules: If the string begins with "0x", it is assumed to be hexadecimal; if it begins with "0", it is assumed to be octal; otherwise it is assumed to be decimal.

If the conversion fails the function returns 0.

Ifok is not 0, failure is reported by setting *ok to false, and success by setting *ok to true.

This function ignores leading and trailing whitespace.

See alsotoShort() andtoString().

QString QLocale::toUpper(constQString & str) const

Returns an uppercase copy ofstr.

This function was introduced in Qt 4.8.

QStringList QLocale::uiLanguages() const

Returns an ordered list of locale names for translation purposes in preference order.

The return value represents locale names that the user expects to see the UI translation in.

Most like you do not need to use this function directly, but just pass theQLocale object to theQTranslator::load() function.

The first item in the list is the most preferred one.

This function was introduced in Qt 4.8.

See alsoQTranslator andbcp47Name().

QList<Qt::DayOfWeek> QLocale::weekdays() const

Returns a list of days that are considered weekdays according to the current locale.

This function was introduced in Qt 4.8.

QChar QLocale::zeroDigit() const

Returns the zero digit character of this locale.

This function was introduced in Qt 4.1.

bool QLocale::operator!=(constQLocale & other) const

Returns true if theQLocale object is not the same as theother locale specified; otherwise returns false.

QLocale & QLocale::operator=(constQLocale & other)

Assignsother to thisQLocale object and returns a reference to thisQLocale object.

bool QLocale::operator==(constQLocale & other) const

Returns true if theQLocale object is the same as theother locale specified; otherwise returns false.

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