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QLocale Class Reference
[модуль QtCore ]

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

 #include <QLocale>

Note: All the functions in this class are reentrant, except setDefault().

Открытые типы

Открытые функции

  • QLocale ()
  • QLocale ( const QString & name )
  • QLocale ( Language language, Country country = AnyCountry )
  • QLocale ( const QLocale & other )
  • Country country () const
  • QString dateFormat ( FormatType format = LongFormat ) const
  • QString dayName ( int day, FormatType type = LongFormat ) const
  • QChar decimalPoint () const
  • QChar exponential () const
  • QChar groupSeparator () const
  • Language language () const
  • QString monthName ( int month, FormatType type = LongFormat ) const
  • QString name () const
  • QChar negativeSign () const
  • NumberOptions numberOptions () const
  • QChar percent () const
  • void setNumberOptions ( NumberOptions options )
  • QString timeFormat ( FormatType format = LongFormat ) const
  • double toDouble ( const QString & s, bool * ok = 0 ) const
  • float toFloat ( const QString & s, bool * ok = 0 ) const
  • int toInt ( const QString & s, bool * ok = 0, int base = 0 ) const
  • qlonglong toLongLong ( const QString & s, bool * ok = 0, int base = 0 ) const
  • short toShort ( const QString & s, bool * ok = 0, int base = 0 ) const
  • QString toString ( qlonglong i ) const
  • QString toString ( const QDate & date, const QString & format ) const
  • QString toString ( const QDate & date, FormatType format = LongFormat ) const
  • QString toString ( const QTime & time, const QString & format ) const
  • QString toString ( const QTime & time, FormatType format = LongFormat ) const
  • QString toString ( qulonglong i ) const
  • QString toString ( double i, char f = 'g', int prec = 6 ) const
  • QString toString ( short i ) const
  • QString toString ( ushort i ) const
  • QString toString ( int i ) const
  • QString toString ( uint i ) const
  • QString toString ( float i, char f = 'g', int prec = 6 ) const
  • uint toUInt ( const QString & s, bool * ok = 0, int base = 0 ) const
  • qlonglong toULongLong ( const QString & s, bool * ok = 0, int base = 0 ) const
  • ushort toUShort ( const QString & s, bool * ok = 0, int base = 0 ) const
  • QChar zeroDigit () const
  • bool operator!= ( const QLocale & other ) const
  • QLocale & operator= ( const QLocale & other )
  • bool operator== ( const QLocale & other ) const

Статические открытые члены


Подробное описание

The QLocale 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 in QString.

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 member setDefault(). Setting 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::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 use QLocale directly:

 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(&amp;ok);   // ok == false
 d = QString("1234.56").toDouble(&amp;ok);   // ok == true, d == 1234.56
 
 QLocale::setDefault(QLocale::German);
 d = QString("1234,56").toDouble(&amp;ok);   // ok == true, d == 1234.56
 d = QString("1234.56").toDouble(&amp;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.

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 also QString::arg(), QString::toInt(), and QString::toDouble().


Описание типов членов

enum QLocale::Country

This enumerated type is used to specify a country.


Constant Value
QLocale::AnyCountry 0
QLocale::Afghanistan 1
QLocale::Albania 2
QLocale::Algeria 3
QLocale::AmericanSamoa 4
QLocale::Andorra 5
QLocale::Angola 6
QLocale::Anguilla 7
QLocale::Antarctica 8
QLocale::AntiguaAndBarbuda 9
QLocale::Argentina 10
QLocale::Armenia 11
QLocale::Aruba 12
QLocale::Australia 13
QLocale::Austria 14
QLocale::Azerbaijan 15
QLocale::Bahamas 16
QLocale::Bahrain 17
QLocale::Bangladesh 18
QLocale::Barbados 19
QLocale::Belarus 20
QLocale::Belgium 21
QLocale::Belize 22
QLocale::Benin 23
QLocale::Bermuda 24
QLocale::Bhutan 25
QLocale::Bolivia 26
QLocale::BosniaAndHerzegowina 27
QLocale::Botswana 28
QLocale::BouvetIsland 29
QLocale::Brazil 30
QLocale::BritishIndianOceanTerritory 31
QLocale::BruneiDarussalam 32
QLocale::Bulgaria 33
QLocale::BurkinaFaso 34
QLocale::Burundi 35
QLocale::Cambodia 36
QLocale::Cameroon 37
QLocale::Canada 38
QLocale::CapeVerde 39
QLocale::CaymanIslands 40
QLocale::CentralAfricanRepublic 41
QLocale::Chad 42
QLocale::Chile 43
QLocale::China 44
QLocale::ChristmasIsland 45
QLocale::CocosIslands 46
QLocale::Colombia 47
QLocale::Comoros 48
QLocale::DemocraticRepublicOfCongo 49
QLocale::PeoplesRepublicOfCongo 50
QLocale::CookIslands 51
QLocale::CostaRica 52
QLocale::IvoryCoast 53
QLocale::Croatia 54
QLocale::Cuba 55
QLocale::Cyprus 56
QLocale::CzechRepublic 57
QLocale::Denmark 58
QLocale::Djibouti 59
QLocale::Dominica 60
QLocale::DominicanRepublic 61
QLocale::EastTimor 62
QLocale::Ecuador 63
QLocale::Egypt 64
QLocale::ElSalvador 65
QLocale::EquatorialGuinea 66
QLocale::Eritrea 67
QLocale::Estonia 68
QLocale::Ethiopia 69
QLocale::FalklandIslands 70
QLocale::FaroeIslands 71
QLocale::FijiCountry 72
QLocale::Finland 73
QLocale::France 74
QLocale::MetropolitanFrance 75
QLocale::FrenchGuiana 76
QLocale::FrenchPolynesia 77
QLocale::FrenchSouthernTerritories 78
QLocale::Gabon 79
QLocale::Gambia 80
QLocale::Georgia 81
QLocale::Germany 82
QLocale::Ghana 83
QLocale::Gibraltar 84
QLocale::Greece 85
QLocale::Greenland 86
QLocale::Grenada 87
QLocale::Guadeloupe 88
QLocale::Guam 89
QLocale::Guatemala 90
QLocale::Guinea 91
QLocale::GuineaBissau 92
QLocale::Guyana 93
QLocale::Haiti 94
QLocale::HeardAndMcDonaldIslands 95
QLocale::Honduras 96
QLocale::HongKong 97
QLocale::Hungary 98
QLocale::Iceland 99
QLocale::India 100
QLocale::Indonesia 101
QLocale::Iran 102
QLocale::Iraq 103
QLocale::Ireland 104
QLocale::Israel 105
QLocale::Italy 106
QLocale::Jamaica 107
QLocale::Japan 108
QLocale::Jordan 109
QLocale::Kazakhstan 110
QLocale::Kenya 111
QLocale::Kiribati 112
QLocale::DemocraticRepublicOfKorea 113
QLocale::RepublicOfKorea 114
QLocale::Kuwait 115
QLocale::Kyrgyzstan 116
QLocale::Lao 117
QLocale::Latvia 118
QLocale::Lebanon 119
QLocale::Lesotho 120
QLocale::Liberia 121
QLocale::LibyanArabJamahiriya 122
QLocale::Liechtenstein 123
QLocale::Lithuania 124
QLocale::Luxembourg 125
QLocale::Macau 126
QLocale::Macedonia 127
QLocale::Madagascar 128
QLocale::Malawi 129
QLocale::Malaysia 130
QLocale::Maldives 131
QLocale::Mali 132
QLocale::Malta 133
QLocale::MarshallIslands 134
QLocale::Martinique 135
QLocale::Mauritania 136
QLocale::Mauritius 137
QLocale::Mayotte 138
QLocale::Mexico 139
QLocale::Micronesia 140
QLocale::Moldova 141
QLocale::Monaco 142
QLocale::Mongolia 143
QLocale::Montserrat 144
QLocale::Morocco 145
QLocale::Mozambique 146
QLocale::Myanmar 147
QLocale::Namibia 148
QLocale::NauruCountry 149
QLocale::Nepal 150
QLocale::Netherlands 151
QLocale::NetherlandsAntilles 152
QLocale::NewCaledonia 153
QLocale::NewZealand 154
QLocale::Nicaragua 155
QLocale::Niger 156
QLocale::Nigeria 157
QLocale::Niue 158
QLocale::NorfolkIsland 159
QLocale::NorthernMarianaIslands 160
QLocale::Norway 161
QLocale::Oman 162
QLocale::Pakistan 163
QLocale::Palau 164
QLocale::PalestinianTerritory 165
QLocale::Panama 166
QLocale::PapuaNewGuinea 167
QLocale::Paraguay 168
QLocale::Peru 169
QLocale::Philippines 170
QLocale::Pitcairn 171
QLocale::Poland 172
QLocale::Portugal 173
QLocale::PuertoRico 174
QLocale::Qatar 175
QLocale::Reunion 176
QLocale::Romania 177
QLocale::RussianFederation 178
QLocale::Rwanda 179
QLocale::SaintKittsAndNevis 180
QLocale::StLucia 181
QLocale::StVincentAndTheGrenadines 182
QLocale::Samoa 183
QLocale::SanMarino 184
QLocale::SaoTomeAndPrincipe 185
QLocale::SaudiArabia 186
QLocale::Senegal 187
QLocale::SerbiaAndMontenegro 241
QLocale::Seychelles 188
QLocale::SierraLeone 189
QLocale::Singapore 190
QLocale::Slovakia 191
QLocale::Slovenia 192
QLocale::SolomonIslands 193
QLocale::Somalia 194
QLocale::SouthAfrica 195
QLocale::SouthGeorgiaAndTheSouthSandwichIslands 196
QLocale::Spain 197
QLocale::SriLanka 198
QLocale::StHelena 199
QLocale::StPierreAndMiquelon 200
QLocale::Sudan 201
QLocale::Suriname 202
QLocale::SvalbardAndJanMayenIslands 203
QLocale::Swaziland 204
QLocale::Sweden 205
QLocale::Switzerland 206
QLocale::SyrianArabRepublic 207
QLocale::Taiwan 208
QLocale::Tajikistan 209
QLocale::Tanzania 210
QLocale::Thailand 211
QLocale::Togo 212
QLocale::Tokelau 213
QLocale::TongaCountry 214
QLocale::TrinidadAndTobago 215
QLocale::Tunisia 216
QLocale::Turkey 217
QLocale::Turkmenistan 218
QLocale::TurksAndCaicosIslands 219
QLocale::Tuvalu 220
QLocale::Uganda 221
QLocale::Ukraine 222
QLocale::UnitedArabEmirates 223
QLocale::UnitedKingdom 224
QLocale::UnitedStates 225
QLocale::UnitedStatesMinorOutlyingIslands 226
QLocale::Uruguay 227
QLocale::Uzbekistan 228
QLocale::Vanuatu 229
QLocale::VaticanCityState 230
QLocale::Venezuela 231
QLocale::VietNam 232
QLocale::BritishVirginIslands 233
QLocale::USVirginIslands 234
QLocale::WallisAndFutunaIslands 235
QLocale::WesternSahara 236
QLocale::Yemen 237
QLocale::Yugoslavia 238
QLocale::Zambia 239
QLocale::Zimbabwe 240

See also country().

enum QLocale::FormatType

This enum describes the types of format that can be used when converting QDate and QTime objects to strings.


Constant Value
QLocale::LongFormat 0
QLocale::ShortFormat 1

enum QLocale::Language

This enumerated type is used to specify a language.


Constant Value Description
QLocale::C 1
QLocale::Abkhazian 2
QLocale::Afan 3
QLocale::Afar 4
QLocale::Afrikaans 5
QLocale::Albanian 6
QLocale::Amharic 7
QLocale::Arabic 8
QLocale::Armenian 9
QLocale::Assamese 10
QLocale::Aymara 11
QLocale::Azerbaijani 12
QLocale::Bashkir 13
QLocale::Basque 14
QLocale::Bengali 15
QLocale::Bhutani 16
QLocale::Bihari 17
QLocale::Bislama 18
QLocale::Bosnian 142
QLocale::Breton 19
QLocale::Bulgarian 20
QLocale::Burmese 21
QLocale::Byelorussian 22
QLocale::Cambodian 23
QLocale::Catalan 24
QLocale::Chinese 25
QLocale::Cornish 145
QLocale::Corsican 26
QLocale::Croatian 27
QLocale::Czech 28
QLocale::Danish 29
QLocale::Divehi 143
QLocale::Dutch 30
QLocale::English 31
QLocale::Esperanto 32
QLocale::Estonian 33
QLocale::Faroese 34
QLocale::FijiLanguage 35
QLocale::Finnish 36
QLocale::French 37
QLocale::Frisian 38
QLocale::Gaelic 39
QLocale::Galician 40
QLocale::Georgian 41
QLocale::German 42
QLocale::Greek 43
QLocale::Greenlandic 44
QLocale::Guarani 45
QLocale::Gujarati 46
QLocale::Hausa 47
QLocale::Hebrew 48
QLocale::Hindi 49
QLocale::Hungarian 50
QLocale::Icelandic 51
QLocale::Indonesian 52
QLocale::Interlingua 53
QLocale::Interlingue 54
QLocale::Inuktitut 55
QLocale::Inupiak 56
QLocale::Irish 57
QLocale::Italian 58
QLocale::Japanese 59
QLocale::Javanese 60
QLocale::Kannada 61
QLocale::Kashmiri 62
QLocale::Kazakh 63
QLocale::Kinyarwanda 64
QLocale::Kirghiz 65
QLocale::Korean 66
QLocale::Kurdish 67
QLocale::Kurundi 68
QLocale::Laothian 69
QLocale::Latin 70
QLocale::Latvian 71
QLocale::Lingala 72
QLocale::Lithuanian 73
QLocale::Macedonian 74
QLocale::Malagasy 75
QLocale::Malay 76
QLocale::Malayalam 77
QLocale::Maltese 78
QLocale::Manx 144
QLocale::Maori 79
QLocale::Marathi 80
QLocale::Moldavian 81
QLocale::Mongolian 82
QLocale::NauruLanguage 83
QLocale::Nepali 84
QLocale::Norwegian 85
QLocale::NorwegianBokmal Norwegian
QLocale::Nynorsk NorwegianNynorsk Obsolete, please use NorwegianNynorsk
QLocale::NorwegianNynorsk 141
QLocale::Occitan 86
QLocale::Oriya 87
QLocale::Pashto 88
QLocale::Persian 89
QLocale::Polish 90
QLocale::Portuguese 91
QLocale::Punjabi 92
QLocale::Quechua 93
QLocale::RhaetoRomance 94
QLocale::Romanian 95
QLocale::Russian 96
QLocale::Samoan 97
QLocale::Sangho 98
QLocale::Sanskrit 99
QLocale::Serbian 100
QLocale::SerboCroatian 101
QLocale::Sesotho 102
QLocale::Setswana 103
QLocale::Shona 104
QLocale::Sindhi 105
QLocale::Singhalese 106
QLocale::Siswati 107
QLocale::Slovak 108
QLocale::Slovenian 109
QLocale::Somali 110
QLocale::Spanish 111
QLocale::Sundanese 112
QLocale::Swahili 113
QLocale::Swedish 114
QLocale::Tagalog 115
QLocale::Tajik 116
QLocale::Tamil 117
QLocale::Tatar 118
QLocale::Telugu 119
QLocale::Thai 120
QLocale::Tibetan 121
QLocale::Tigrinya 122
QLocale::TongaLanguage 123
QLocale::Tsonga 124
QLocale::Turkish 125
QLocale::Turkmen 126
QLocale::Twi 127
QLocale::Uigur 128
QLocale::Ukrainian 129
QLocale::Urdu 130
QLocale::Uzbek 131
QLocale::Vietnamese 132
QLocale::Volapuk 133
QLocale::Welsh 134
QLocale::Wolof 135
QLocale::Xhosa 136
QLocale::Yiddish 137
QLocale::Yoruba 138
QLocale::Zhuang 139
QLocale::Zulu 140
QLocale::Bosnian 142
QLocale::Divehi 143
QLocale::Manx 144
QLocale::Cornish 145
QLocale::Akan 146
QLocale::Konkani 147
QLocale::Ga 148
QLocale::Igbo 149
QLocale::Kamba 150
QLocale::Syriac 151
QLocale::Blin 152
QLocale::Geez 153
QLocale::Koro 154
QLocale::Sidamo 155
QLocale::Atsam 156
QLocale::Tigre 157
QLocale::Jju 158
QLocale::Friulian 159
QLocale::Venda 160
QLocale::Ewe 161
QLocale::Walamo 162
QLocale::Hawaiian 163
QLocale::Tyap 164
QLocale::Chewa 165

See also language().

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 with numberOptions() and set with setNumberOptions().


Constant Value Description
QLocale::OmitGroupSeparator 0x01 If this option is set, the number-to-string functions will not insert group separators in their return values. The default is to insert group seperators.
QLocale::RejectGroupSeparator 0x02 If 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 for QFlags<NumberOption>. It stores an OR combination of NumberOption values.

See also setNumberOptions() and numberOptions().


Описание функций-членов

QLocale::QLocale ()

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

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().

QList< Country> QLocale::countriesForLanguage ( Language language ) [static]

Returns the list of countries that have entires for language in Qt's locale database. If the result is an empty list, then language is not represented in Qt's locale database.

This function was introduced in Qt 4.3.

Country QLocale::country () const

Returns the country of this locale.

See also language(), countryToString(), and name().

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

Returns a QString containing the name of country.

See also country() and name().

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

Returns the date format used for the current locale.

If format is ShortFormat the format will be a short version. Otherwise it uses a longer version.

This function was introduced in Qt 4.1.

See also QDate::toString() and QDate::fromString().

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

Returns the localized name of day, in the format specified by type.

This function was introduced in Qt 4.2.

See also monthName().

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.

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 also country(), languageToString(), and name().

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

Returns a QString containing the name of language.

See also countryToString() and name().

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

Returns the localized name of month, in the format specified by type.

This function was introduced in Qt 4.2.

See also dayName().

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 language() and country().

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 this QLocale instance.

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

This function was introduced in Qt 4.2.

See also setNumberOptions().

QChar QLocale::percent () const

Returns the percent character of this locale.

This function was introduced in Qt 4.1.

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

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.

Warning: This function is not reentrant.

See also system() and c().

void QLocale::setNumberOptions ( NumberOptions options )

Sets the options related to number conversions for this QLocale instance.

This function was introduced in Qt 4.2.

See also numberOptions().

QLocale QLocale::system () [static]

Returns a QLocale 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 also QTextCodec::locale() and c().

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

Returns the time format used for the current locale.

If format is ShortFormat the format will be a short version. Otherwise it uses a longer version.

This function was introduced in Qt 4.1.

See also QTime::toString() and QTime::fromString().

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", &amp;ok );  // ok == true, d == 1234.56
 d = c.toDouble( "1,234.56", &amp;ok ); // ok == true, d == 1234.56
 d = c.toDouble( "1234,56", &amp;ok );  // ok == false
 
 QLocale german(QLocale::German);
 d = german.toDouble( "1234,56", &amp;ok );  // ok == true, d == 1234.56
 d = german.toDouble( "1.234,56", &amp;ok ); // ok == true, d == 1234.56
 d = german.toDouble( "1234.56", &amp;ok );  // ok == false
 
 d = german.toDouble( "1.234", &amp;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 toFloat(), toInt(), and toString().

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 toDouble(), toInt(), and toString().

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

Returns the int represented by the localized string s, using base base. If base 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.

If ok 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 also toUInt() and toString().

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

Returns the long long int represented by the localized string s, using base base. If base 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.

If ok 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 also toInt(), toULongLong(), toDouble(), and toString().

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

Returns the short int represented by the localized string s, using base base. If base 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.

If ok 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 also toUShort() and toString().

QString QLocale::toString ( qlonglong i ) const

Returns a localized string representation of i.

See also toLongLong().

QString QLocale::toString ( const QDate & date, const QString & format ) const

This is an overloaded member function, provided for convenience.

Returns a localized string representation of the given date in the specified format. If format is an empty string, an empty string is returned.

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

This is an overloaded member function, provided for convenience.

Returns a localized string representation of the given date according to the specified format.

QString QLocale::toString ( const QTime & time, const QString & format ) const

This is an overloaded member function, provided for convenience.

Returns a localized string representation of the given time according to the specified format. If format is an empty string, an empty string is returned.

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

This is an overloaded member function, provided for convenience.

Returns a localized string representation of the given time in the specified format.

QString QLocale::toString ( qulonglong i ) const

This is an overloaded member function, provided for convenience.

See also toULongLong().

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

This is an overloaded member function, provided for convenience.

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

See also toDouble().

QString QLocale::toString ( short i ) const

This is an overloaded member function, provided for convenience.

See also toShort().

QString QLocale::toString ( ushort i ) const

This is an overloaded member function, provided for convenience.

See also toUShort().

QString QLocale::toString ( int i ) const

This is an overloaded member function, provided for convenience.

See also toInt().

QString QLocale::toString ( uint i ) const

This is an overloaded member function, provided for convenience.

See also toUInt().

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

This is an overloaded member function, provided for convenience.

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, int base = 0 ) const

Returns the unsigned int represented by the localized string s, using base base. If base 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.

If ok 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 also toInt() and toString().

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

Returns the unsigned long long int represented by the localized string s, using base base. If base 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.

If ok 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 also toLongLong(), toInt(), toDouble(), and toString().

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

Returns the unsigned short int represented by the localized string s, using base base. If base 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.

If ok 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 also toShort() and toString().

QChar QLocale::zeroDigit () const

Returns the zero digit character of this locale.

This function was introduced in Qt 4.1.

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

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

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

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

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

Returns true if the QLocale object is the same as the other locale specified; otherwise returns false.


Copyright © 2007 Trolltech Trademarks
Qt 4.3.2