QSettings settings("mycompany", "myapp"); settings.setValue("username", "johndoe"); settings.setValue("password", "secret");
QSettings settings("mycompany", "myapp"); QString username = settings.value("username").toString(); QString password = settings.value("password").toString();This code creates a QSettings object with the file name "mycompany/myapp.ini". It then reads the values of the "username" and "password" keys and stores them in QString objects. Package Library: The QSettings class is part of the Qt Core module, which is part of the Qt framework. Therefore, the required package library is the Qt framework.