NAME¶

QLocale - Converts between numbers and their string representations in various languages

SYNOPSIS¶

Almost all the functions in this class are reentrant when Qt is built with thread support. The exception is setDefault(). </p>

#include <qlocale.h>

DESCRIPTION¶

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

It is initialized with a country/language pair in its constructor and offers number-to-string and string-to-number conversion functions simmilar to those in QString.

    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 s2 = 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 member setDefault(). The default locale has the following effects:

If a QLocale object is constructed with the default constructor, it will use the default locale's settings.

QString::toDouble() interprets 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".

    QLocale::setDefault(QLocale(QLocale::Hebrew, QLocale::Israel));


    QLocale hebrew; // Constructs a default QLocale


    QString s1 = hebrew.toString(15714.3, 'e');




    bool ok;


    double d;




    QLocale::setDefault(QLocale::C);


    d = QString( "1234,56" ).toDouble(&ok); // ok == false


    d = QString( "1234.56" ).toDouble(&ok); // ok == true, d == 1234.56




    QLocale::setDefault(QLocale::German);


    d = QString( "1234,56" ).toDouble(&ok); // ok == true, d == 1234.56


    d = QString( "1234.56" ).toDouble(&ok); // ok == true, d == 1234.56




    QLocale::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 is AnyCountry, 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 (see setDefault()).

The "C" locale is identical to English/UnitedStates.

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

An alternative method for constructing a QLocale 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.

All the methods in QLocale, with the exception of setDefault(), are reentrant.

See also QString::toDouble(), QString::arg(), and Text Related Classes.

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.

QLocale::Country¶

This enumerated type is used to specify a country.

QLocale::AnyCountry

QLocale::Afghanistan

QLocale::Albania

QLocale::Algeria

QLocale::AmericanSamoa

QLocale::Andorra

QLocale::Angola

QLocale::Anguilla

QLocale::Antarctica

QLocale::AntiguaAndBarbuda

QLocale::Argentina

QLocale::Armenia

QLocale::Aruba

QLocale::Australia

QLocale::Austria

QLocale::Azerbaijan

QLocale::Bahamas

QLocale::Bahrain

QLocale::Bangladesh

QLocale::Barbados

QLocale::Belarus

QLocale::Belgium

QLocale::Belize

QLocale::Benin

QLocale::Bermuda

QLocale::Bhutan

QLocale::Bolivia

QLocale::BosniaAndHerzegowina

QLocale::Botswana

QLocale::BouvetIsland

QLocale::Brazil

QLocale::BritishIndianOceanTerritory

QLocale::BruneiDarussalam

QLocale::Bulgaria

QLocale::BurkinaFaso

QLocale::Burundi

QLocale::Cambodia

QLocale::Cameroon

QLocale::Canada

QLocale::CapeVerde

QLocale::CaymanIslands

QLocale::CentralAfricanRepublic

QLocale::Chad

QLocale::Chile

QLocale::China

QLocale::ChristmasIsland

QLocale::CocosIslands

QLocale::Colombia

QLocale::Comoros

QLocale::DemocraticRepublicOfCongo

QLocale::PeoplesRepublicOfCongo

QLocale::CookIslands

QLocale::CostaRica

QLocale::IvoryCoast

QLocale::Croatia

QLocale::Cuba

QLocale::Cyprus

QLocale::CzechRepublic

QLocale::Denmark

QLocale::Djibouti

QLocale::Dominica

QLocale::DominicanRepublic

QLocale::EastTimor

QLocale::Ecuador

QLocale::Egypt

QLocale::ElSalvador

QLocale::EquatorialGuinea

QLocale::Eritrea

QLocale::Estonia

QLocale::Ethiopia

QLocale::FalklandIslands

QLocale::FaroeIslands

QLocale::FijiCountry

QLocale::Finland

QLocale::France

QLocale::MetropolitanFrance

QLocale::FrenchGuiana

QLocale::FrenchPolynesia

QLocale::FrenchSouthernTerritories

QLocale::Gabon

QLocale::Gambia

QLocale::Georgia

QLocale::Germany

QLocale::Ghana

QLocale::Gibraltar

QLocale::Greece

QLocale::Greenland

QLocale::Grenada

QLocale::Guadeloupe

QLocale::Guam

QLocale::Guatemala

QLocale::Guinea

QLocale::GuineaBissau

QLocale::Guyana

QLocale::Haiti

QLocale::HeardAndMcDonaldIslands

QLocale::Honduras

QLocale::HongKong

QLocale::Hungary

QLocale::Iceland

QLocale::India

QLocale::Indonesia

QLocale::Iran

QLocale::Iraq

QLocale::Ireland

QLocale::Israel

QLocale::Italy

QLocale::Jamaica

QLocale::Japan

QLocale::Jordan

QLocale::Kazakhstan

QLocale::Kenya

QLocale::Kiribati

QLocale::DemocraticRepublicOfKorea

QLocale::RepublicOfKorea

QLocale::Kuwait

QLocale::Kyrgyzstan

QLocale::Lao

QLocale::Latvia

QLocale::Lebanon

QLocale::Lesotho

QLocale::Liberia

QLocale::LibyanArabJamahiriya

QLocale::Liechtenstein

QLocale::Lithuania

QLocale::Luxembourg

QLocale::Macau

QLocale::Macedonia

QLocale::Madagascar

QLocale::Malawi

QLocale::Malaysia

QLocale::Maldives

QLocale::Mali

QLocale::Malta

QLocale::MarshallIslands

QLocale::Martinique

QLocale::Mauritania

QLocale::Mauritius

QLocale::Mayotte

QLocale::Mexico

QLocale::Micronesia

QLocale::Moldova

QLocale::Monaco

QLocale::Mongolia

QLocale::Montserrat

QLocale::Morocco

QLocale::Mozambique

QLocale::Myanmar

QLocale::Namibia

QLocale::NauruCountry

QLocale::Nepal

QLocale::Netherlands

QLocale::NetherlandsAntilles

QLocale::NewCaledonia

QLocale::NewZealand

QLocale::Nicaragua

QLocale::Niger

QLocale::Nigeria

QLocale::Niue

QLocale::NorfolkIsland

QLocale::NorthernMarianaIslands

QLocale::Norway

QLocale::Oman

QLocale::Pakistan

QLocale::Palau

QLocale::PalestinianTerritory

QLocale::Panama

QLocale::PapuaNewGuinea

QLocale::Paraguay

QLocale::Peru

QLocale::Philippines

QLocale::Pitcairn

QLocale::Poland

QLocale::Portugal

QLocale::PuertoRico

QLocale::Qatar

QLocale::Reunion

QLocale::Romania

QLocale::RussianFederation

QLocale::Rwanda

QLocale::SaintKittsAndNevis

QLocale::StLucia

QLocale::StVincentAndTheGrenadines

QLocale::Samoa

QLocale::SanMarino

QLocale::SaoTomeAndPrincipe

QLocale::SaudiArabia

QLocale::Senegal

QLocale::Seychelles

QLocale::SierraLeone

QLocale::Singapore

QLocale::Slovakia

QLocale::Slovenia

QLocale::SolomonIslands

QLocale::Somalia

QLocale::SouthAfrica

QLocale::SouthGeorgiaAndTheSouthSandwichIslands

QLocale::Spain

QLocale::SriLanka

QLocale::StHelena

QLocale::StPierreAndMiquelon

QLocale::Sudan

QLocale::Suriname

QLocale::SvalbardAndJanMayenIslands

QLocale::Swaziland

QLocale::Sweden

QLocale::Switzerland

QLocale::SyrianArabRepublic

QLocale::Taiwan

QLocale::Tajikistan

QLocale::Tanzania

QLocale::Thailand

QLocale::Togo

QLocale::Tokelau

QLocale::TongaCountry

QLocale::TrinidadAndTobago

QLocale::Tunisia

QLocale::Turkey

QLocale::Turkmenistan

QLocale::TurksAndCaicosIslands

QLocale::Tuvalu

QLocale::Uganda

QLocale::Ukraine

QLocale::UnitedArabEmirates

QLocale::UnitedKingdom

QLocale::UnitedStates

QLocale::UnitedStatesMinorOutlyingIslands

QLocale::Uruguay

QLocale::Uzbekistan

QLocale::Vanuatu

QLocale::VaticanCityState

QLocale::Venezuela

QLocale::VietNam

QLocale::BritishVirginIslands

QLocale::USVirginIslands

QLocale::WallisAndFutunaIslands

QLocale::WesternSahara

QLocale::Yemen

QLocale::Yugoslavia

QLocale::Zambia

QLocale::Zimbabwe

QLocale::Language¶

This enumerated type is used to specify a language.

QLocale::C - Identical to English/UnitedStates

QLocale::Abkhazian

QLocale::Afan

QLocale::Afar

QLocale::Afrikaans

QLocale::Albanian

QLocale::Amharic

QLocale::Arabic

QLocale::Armenian

QLocale::Assamese

QLocale::Aymara

QLocale::Azerbaijani

QLocale::Bashkir

QLocale::Basque

QLocale::Bengali

QLocale::Bhutani

QLocale::Bihari

QLocale::Bislama

QLocale::Breton

QLocale::Bulgarian

QLocale::Burmese

QLocale::Byelorussian

QLocale::Cambodian

QLocale::Catalan

QLocale::Chinese

QLocale::Corsican

QLocale::Croatian

QLocale::Czech

QLocale::Danish

QLocale::Dutch

QLocale::English

QLocale::Esperanto

QLocale::Estonian

QLocale::Faroese

QLocale::FijiLanguage

QLocale::Finnish

QLocale::French

QLocale::Frisian

QLocale::Gaelic

QLocale::Galician

QLocale::Georgian

QLocale::German

QLocale::Greek

QLocale::Greenlandic

QLocale::Guarani

QLocale::Gujarati

QLocale::Hausa

QLocale::Hebrew

QLocale::Hindi

QLocale::Hungarian

QLocale::Icelandic

QLocale::Indonesian

QLocale::Interlingua

QLocale::Interlingue

QLocale::Inuktitut

QLocale::Inupiak

QLocale::Irish

QLocale::Italian

QLocale::Japanese

QLocale::Javanese

QLocale::Kannada

QLocale::Kashmiri

QLocale::Kazakh

QLocale::Kinyarwanda

QLocale::Kirghiz

QLocale::Korean

QLocale::Kurdish

QLocale::Kurundi

QLocale::Laothian

QLocale::Latin

QLocale::Latvian

QLocale::Lingala

QLocale::Lithuanian

QLocale::Macedonian

QLocale::Malagasy

QLocale::Malay

QLocale::Malayalam

QLocale::Maltese

QLocale::Maori

QLocale::Marathi

QLocale::Moldavian

QLocale::Mongolian

QLocale::NauruLanguage

QLocale::Nepali

QLocale::Norwegian

QLocale::Occitan

QLocale::Oriya

QLocale::Pashto

QLocale::Persian

QLocale::Polish

QLocale::Portuguese

QLocale::Punjabi

QLocale::Quechua

QLocale::RhaetoRomance

QLocale::Romanian

QLocale::Russian

QLocale::Samoan

QLocale::Sangho

QLocale::Sanskrit

QLocale::Serbian

QLocale::SerboCroatian

QLocale::Sesotho

QLocale::Setswana

QLocale::Shona

QLocale::Sindhi

QLocale::Singhalese

QLocale::Siswati

QLocale::Slovak

QLocale::Slovenian

QLocale::Somali

QLocale::Spanish

QLocale::Sundanese

QLocale::Swahili

QLocale::Swedish

QLocale::Tagalog

QLocale::Tajik

QLocale::Tamil

QLocale::Tatar

QLocale::Telugu

QLocale::Thai

QLocale::Tibetan

QLocale::Tigrinya

QLocale::TongaLanguage

QLocale::Tsonga

QLocale::Turkish

QLocale::Turkmen

QLocale::Twi

QLocale::Uigur

QLocale::Ukrainian

QLocale::Urdu

QLocale::Uzbek

QLocale::Vietnamese

QLocale::Volapuk

QLocale::Welsh

QLocale::Wolof

QLocale::Xhosa

QLocale::Yiddish

QLocale::Yoruba

QLocale::Zhuang

QLocale::Zulu

MEMBER FUNCTION DOCUMENTATION¶

QLocale::QLocale ()¶

Constructs a QLocale object initialized with the default locale.

See also setDefault().

QLocale::QLocale ( const QString & name )¶

Constructs a QLocale object with the specified name, which has the format" language[_country][.codeset][@modifier]" or "C", where:

language is a lowercase, two-letter, ISO 639 language code,

territory is an uppercase, two-letter, ISO 3166 country code,

and codeset and modifier are ignored.

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 and country codes are converted to their respective Language and Country enums. After this conversion is performed the constructor behaves exactly like QLocale(Country, Language).

This constructor is much slower than QLocale(Country, Language).

See also name().

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

Constructs a QLocale object with the specified language and country.

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 is AnyCountry, 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 (see setDefault()).

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

See also setDefault(), language(), and country().

QLocale::QLocale ( const QLocale & other )¶

Constructs a QLocale object as a copy of other.

QLocale QLocale::c () [static]¶

Returns a QLocale object initialized to the "C" locale.

See also system().

Country QLocale::country () const¶

Returns the country of this locale.

See also QLocale().

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

Returns a QString containing the name of country.

Language QLocale::language () const¶

Returns the language of this locale.

See also QLocale().

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

Returns a QString containing the name of language.

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-letter ISO 3166 country code.

See also QLocale().

QLocale & QLocale::operator= ( const QLocale & other )¶

Assigns other to this QLocale object and returns a reference to this QLocale object.

void QLocale::setDefault ( const QLocale & locale ) [static]¶

Warning: This function is not reentrant.</p>

Sets the global default locale to locale. These values are used when a QLocale 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.

See also system() and c().

QLocale QLocale::system () [static]¶

Returns a QLocale object initialized to the system locale.

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

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

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

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

        bool ok;


        double d;




        QLocale c(QLocale::C);


        d = c.toDouble( "1234.56", &ok );  // ok == true, d == 1234.56


        d = c.toDouble( "1,234.56", &ok ); // ok == true, d == 1234.56


        d = c.toDouble( "1234,56", &ok );  // ok == false




        QLocale german(QLocale::German);


        d = german.toDouble( "1234,56", &ok );  // ok == true, d == 1234.56


        d = german.toDouble( "1.234,56", &ok ); // ok == true, d == 1234.56


        d = german.toDouble( "1234.56", &ok );  // ok == false




        d = 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 also toString() and QString::toDouble().

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

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

If ok 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 also toString().

int QLocale::toInt ( const QString & s, bool * ok = 0 ) const¶

Returns the int represented by the localized string s, or 0 if the conversion failed.

If ok 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 also toString().

Q_LONG QLocale::toLong ( const QString & s, bool * ok = 0 ) const¶

Returns the long int represented by the localized string s, or 0 if the conversion failed.

If ok 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 also toString().

Q_LLONG QLocale::toLongLong ( const QString & s, bool * ok = 0 ) const¶

Returns the long long int represented by the localized string s, or 0 if the conversion failed.

If ok 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 also toString().

short QLocale::toShort ( const QString & s, bool * ok = 0 ) const¶

Returns the short int represented by the localized string s, or 0 if the conversion failed.

If ok 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 also toString().

QString QLocale::toString ( Q_LLONG i ) const¶

Returns a localized string representation of i.

See also toLongLong().

QString QLocale::toString ( short i ) const¶

This is an overloaded member function, provided for convenience. It behaves essentially like the above function.

See also toShort().

QString QLocale::toString ( ushort i ) const¶

This is an overloaded member function, provided for convenience. It behaves essentially like the above function.

See also toUShort().

QString QLocale::toString ( int i ) const¶

This is an overloaded member function, provided for convenience. It behaves essentially like the above function.

See also toInt().

QString QLocale::toString ( uint i ) const¶

This is an overloaded member function, provided for convenience. It behaves essentially like the above function.

See also toUInt().

QString QLocale::toString ( Q_LONG i ) const¶

This is an overloaded member function, provided for convenience. It behaves essentially like the above function.

See also toLong().

QString QLocale::toString ( Q_ULONG i ) const¶

This is an overloaded member function, provided for convenience. It behaves essentially like the above function.

See also toULong().

QString QLocale::toString ( Q_ULLONG i ) const¶

This is an overloaded member function, provided for convenience. It behaves essentially like the above function.

See also toULongLong().

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

This is an overloaded member function, provided for convenience. It behaves essentially like the above function.

f and prec have the same meaning as in QString::number(double, char, int).

See also toDouble().

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

This is an overloaded member function, provided for convenience. It behaves essentially like the above function.

f and prec have the same meaning as in QString::number(double, char, int).

See also toDouble().

uint QLocale::toUInt ( const QString & s, bool * ok = 0 ) const¶

Returns the unsigned int represented by the localized string s, or 0 if the conversion failed.

If ok 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 also toString().

Q_ULONG QLocale::toULong ( const QString & s, bool * ok = 0 ) const¶

Returns the unsigned long int represented by the localized string s, or 0 if the conversion failed.

If ok 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 also toString().

Q_ULLONG QLocale::toULongLong ( const QString & s, bool * ok = 0 ) const¶

Returns the unsigned long long int represented by the localized string s, or 0 if the conversion failed.

If ok 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 also toString().

ushort QLocale::toUShort ( const QString & s, bool * ok = 0 ) const¶

Returns the unsigned short int represented by the localized string s, or 0 if the conversion failed.

If ok 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 also toString().

SEE ALSO¶

http://doc.trolltech.com/qlocale.html http://www.trolltech.com/faq/tech.html

COPYRIGHT¶

Copyright 1992-2007 Trolltech ASA, http://www.trolltech.com. See the license file included in the distribution for a complete license statement.

AUTHOR¶

Generated automatically from the source code.

BUGS¶

If you find a bug in Qt, please report it as described in http://doc.trolltech.com/bughowto.html. Good bug reports help us to help you. Thank you.

The definitive Qt documentation is provided in HTML format; it is located at $QTDIR/doc/html and can be read using Qt Assistant or with a web browser. This man page is provided as a convenience for those users who prefer man pages, although this format is not officially supported by Trolltech.

If you find errors in this manual page, please report them to qt-bugs@trolltech.com. Please include the name of the manual page (qlocale.3qt) and the Qt version (3.3.8).