#include#include int main(int argc, char *argv[]) { QCoreApplication app(argc, argv); QSettings settings("MyApp", "MySettings"); settings.setValue("username", "john"); QString username = settings.value("username").toString(); qDebug() << "Username:" << username; return app.exec(); }
#include#include int main(int argc, char *argv[]) { QCoreApplication app(argc, argv); QSettings settings(QSettings::IniFormat, QSettings::UserScope, "MyCompany", "MyApp"); settings.setValue("username", "john"); QString username = settings.value("username").toString(); qDebug() << "Username:" << username; return app.exec(); }
#includeThis example retrieves the value of the "username" key from the settings. If the key is not found, it returns the default value "default". Package library: Qt core In conclusion, the package library used in all of these examples is Qt core, which is the foundation of the Qt framework and provides essential components for building applications.#include int main(int argc, char *argv[]) { QCoreApplication app(argc, argv); QSettings settings(QSettings::IniFormat, QSettings::UserScope, "MyCompany", "MyApp"); QString username = settings.value("username", "default").toString(); qDebug() << "Username:" << username; return app.exec(); }