src_corelib_text_qlocale.cpp

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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
 
#include <QLocale>
 
void wrapInFunction()
{
    {
        //! [0]
        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);
        //! [0]
    }
 
    {
        //! [1]
        bool ok;
        double d;
 
        QLocale::setDefault(QLocale::C);      // uses '.' as a decimal point
        QLocale cLocale;                      // default-constructed C locale
        d = cLocale.toDouble("1234,56", &ok); // ok == false, d == 0
        d = cLocale.toDouble("1234.56", &ok); // ok == true,  d == 1234.56
 
        QLocale::setDefault(QLocale::German); // uses ',' as a decimal point
        QLocale german;                       // default-constructed German locale
        d = german.toDouble("1234,56", &ok);  // ok == true,  d == 1234.56
        d = german.toDouble("1234.56", &ok);  // ok == false, d == 0
 
        QLocale::setDefault(QLocale::English);
        // Default locale now uses ',' as a group separator.
        QString str = QString("%1 %L2 %L3").arg(12345).arg(12345).arg(12345, 0, 16);
        // str == "12345 12,345 3039"
        //! [1]
    }
 
    {
        //! [2]
        QLocale korean("ko");
        QLocale swiss("de_CH");
        //! [2]
    }
 
    {
        //! [3]
        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, d == 0
 
        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 == 0
 
        d = german.toDouble("1.234", &ok);    // ok == true,  d == 1234.0
        //! [3]
    }
 
    {
        //! [3-qstringview]
        bool ok;
        double d;
 
        QLocale c(QLocale::C);
        d = c.toDouble(u"1234.56", &ok);  // ok == true,  d == 1234.56
        d = c.toDouble(u"1,234.56", &ok); // ok == true,  d == 1234.56
        d = c.toDouble(u"1234,56", &ok);  // ok == false, d == 0
 
        QLocale german(QLocale::German);
        d = german.toDouble(u"1234,56", &ok);  // ok == true,  d == 1234.56
        d = german.toDouble(u"1.234,56", &ok); // ok == true,  d == 1234.56
        d = german.toDouble(u"1234.56", &ok);  // ok == false, d == 0
 
        d = german.toDouble(u"1.234", &ok);    // ok == true,  d == 1234.0
        //! [3-qstringview]
    }
}