QgsSettings settings; QString myValue = settings.value("mySetting/key", "").toString();
QgsSettings settings; settings.setValue("mySetting/key", "myValue");
QgsSettings settings; QString myValue = settings.value("mySetting/key", "defaultValue").toString();This code reads the value for "key" in the "mySetting" section of the settings. If the key is not found, it returns the default value of "defaultValue". The QgsSettings class is part of the QGIS libraries, specifically the qgis_core library.