src_corelib_io_qsettings.cpp

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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
 
QSettings settings("MySoft", "Star Runner");
QColor color = settings.value("DataPump/bgcolor").value<QColor>();
 
 
QSettings settings("MySoft", "Star Runner");
QColor color = palette().background().color();
settings.setValue("DataPump/bgcolor", color);
 
 
QSettings settings("/home/petra/misc/myapp.ini",
                   QSettings::IniFormat);
 
 
QSettings settings("/Users/petra/misc/myapp.plist",
                   QSettings::NativeFormat);
 
 
QSettings settings("HKEY_CURRENT_USER\\Software\\Microsoft\\Office",
                   QSettings::NativeFormat);
 
 
settings.setValue("11.0/Outlook/Security/DontTrustInstalledFiles", 0);
 
 
settings.setValue("HKEY_CURRENT_USER\\MySoft\\Star Runner\\Galaxy", "Milkyway");
settings.setValue("HKEY_CURRENT_USER\\MySoft\\Star Runner\\Galaxy\\Sun", "OurStar");
settings.value("HKEY_CURRENT_USER\\MySoft\\Star Runner\\Galaxy\\Default"); // returns "Milkyway"
 
 
#ifdef Q_OS_DARWIN
    QSettings settings("grenoullelogique.fr", "Squash");
#else
    QSettings settings("Grenoulle Logique", "Squash");
#endif
 
 
pos = @Point(100 100)
 
 
 
windir = C:\Windows
 
 
QSettings settings("Moose Tech", "Facturo-Pro");
 
 
QSettings settings("Moose Soft", "Facturo-Pro");
 
 
QCoreApplication::setOrganizationName("Moose Soft");
QCoreApplication::setApplicationName("Facturo-Pro");
QSettings settings;
 
 
settings.beginGroup("mainwindow");
settings.setValue("size", win->size());
settings.setValue("fullScreen", win->isFullScreen());
settings.endGroup();
 
settings.beginGroup("outputpanel");
settings.setValue("visible", panel->isVisible());
settings.endGroup();
 
 
settings.beginGroup("alpha");
// settings.group() == "alpha"
 
settings.beginGroup("beta");
// settings.group() == "alpha/beta"
 
settings.endGroup();
// settings.group() == "alpha"
 
settings.endGroup();
// settings.group() == ""
 
 
struct Login {
    QString userName;
    QString password;
};
QList<Login> logins;
...
 
QSettings settings;
int size = settings.beginReadArray("logins");
for (int i = 0; i < size; ++i) {
    settings.setArrayIndex(i);
    Login login;
    login.userName = settings.value("userName").toString();
    login.password = settings.value("password").toString();
    logins.append(login);
}
settings.endArray();
 
 
struct Login {
    QString userName;
    QString password;
};
QList<Login> logins;
...
 
QSettings settings;
settings.beginWriteArray("logins");
for (qsizetype i = 0; i < logins.size(); ++i) {
    settings.setArrayIndex(i);
    settings.setValue("userName", logins.at(i).userName);
    settings.setValue("password", logins.at(i).password);
}
settings.endArray();
 
 
QSettings settings;
settings.setValue("fridge/color", QColor(Qt::white));
settings.setValue("fridge/size", QSize(32, 96));
settings.setValue("sofa", true);
settings.setValue("tv", false);
 
QStringList keys = settings.allKeys();
// keys: ["fridge/color", "fridge/size", "sofa", "tv"]
 
 
settings.beginGroup("fridge");
keys = settings.allKeys();
// keys: ["color", "size"]
 
 
QSettings settings;
settings.setValue("fridge/color", QColor(Qt::white));
settings.setValue("fridge/size", QSize(32, 96));
settings.setValue("sofa", true);
settings.setValue("tv", false);
 
QStringList keys = settings.childKeys();
// keys: ["sofa", "tv"]
 
 
settings.beginGroup("fridge");
keys = settings.childKeys();
// keys: ["color", "size"]
 
 
QSettings settings;
settings.setValue("fridge/color", QColor(Qt::white));
settings.setValue("fridge/size", QSize(32, 96));
settings.setValue("sofa", true);
settings.setValue("tv", false);
 
QStringList groups = settings.childGroups();
// groups: ["fridge"]
 
 
settings.beginGroup("fridge");
groups = settings.childGroups();
// groups: []
 
 
QSettings settings;
settings.setValue("interval", 30);
settings.value("interval").toInt();     // returns 30
 
settings.setValue("interval", 6.55);
settings.value("interval").toDouble();  // returns 6.55
 
 
QSettings settings;
settings.setValue("ape");
settings.setValue("monkey", 1);
settings.setValue("monkey/sea", 2);
settings.setValue("monkey/doe", 4);
 
settings.remove("monkey");
QStringList keys = settings.allKeys();
// keys: ["ape"]
 
 
QSettings settings;
settings.setValue("ape");
settings.setValue("monkey", 1);
settings.setValue("monkey/sea", 2);
settings.setValue("monkey/doe", 4);
 
settings.beginGroup("monkey");
settings.remove("");
settings.endGroup();
 
QStringList keys = settings.allKeys();
// keys: ["ape"]
 
 
QSettings settings;
settings.setValue("animal/snake", 58);
settings.value("animal/snake", 1024).toInt();   // returns 58
settings.value("animal/zebra", 1024).toInt();   // returns 1024
settings.value("animal/zebra").toInt();         // returns 0
 
 
bool myReadFunc(QIODevice &device, QSettings::SettingsMap &map);
 
 
bool myWriteFunc(QIODevice &device, const QSettings::SettingsMap &map);
 
 
bool readXmlFile(QIODevice &device, QSettings::SettingsMap &map);
bool writeXmlFile(QIODevice &device, const QSettings::SettingsMap &map);
 
int main(int argc, char *argv[])
{
    const QSettings::Format XmlFormat =
            QSettings::registerFormat("xml", readXmlFile, writeXmlFile);
 
    QSettings settings(XmlFormat, QSettings::UserScope, "MySoft",
                       "Star Runner");
 
    ...
}