Hello! I have found an issue with my program using Qt 6 . For example, I created this method to read the QSettings ini file. #define APP_SETTINGS_PATH QDir::toNativeSeparators(QString("%1/settings/%2.ini").arg(QApplication::applicationDirPath(), QString(APP_NAME).remove(QRegularExpression("\\s")))) QVariant ManageProgram::loadSettings(QString group, QString property, QVariant defaultValue) { QSettings appSettings(APP_SETTINGS_PATH, QSettings::IniFormat); appSettings.beginGroup(group); QVariant valueVariant = appSettings.value(property, defaultValue); appSettings.endGroup(); return valueVariant; } Then, I want to get the value from my enum: Connection::State Connection::State wlanConnectionState = ManageProgram::loadSettings("AppSettings", "WlanState", Connection::State::Unknown).value<Connection::State>(); INI file: [AppSettings] WlanState=2 The stored value is: 2 but it returns as 0 on Qt 6.3.2 , Qt 6.4.1 , Qt 6.4.2 , which breaks some of the features in my program. On Qt 5 this works well and returns the correct enum value: 2 . Any ideas? Thank you.

Ok, looks like an enum now need Q_ENUM() (even though I think it may be a subtle bug): struct Connection { Q_GADGET public: enum State { NotConnected = 0, Connecting = 1, Connected = 2, Canceled = 3, Unknown = 4 }; Q_ENUM(State) }; This also allows this in your ini file: [AppSettings] WlanState=Connected Will investigate it later on // see https://bugreports.qt.io/browse/QTBUG-109744

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Wrong enum value from QSettings using Qt 6

Solved General and Desktop

21 Posts 6 Posters 3.6k Views

J J.Hilk

@Christian-Ehrlicher

@J-Hilk said in Wrong enum value from QSettings using Qt 6:

@Cobra91151 did you also use Q_ENUM_NS or Q_ENUM if your declaration is inside a QObject class?

cough 🤓

might be in it since the beginning of Qt6 ? because I don't remember it ever working without the Q_ENUM macro?
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Christian Ehrlicher
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wrote on last edited by

#21

@J-Hilk said in Wrong enum value from QSettings using Qt 6:

because I don't remember it ever working without the Q_ENUM macro?

It worked in Qt5 so it's a Qt6 regression. And it is very surprising because QVariant<int>() properly converts to an enum whereas QVariant<QString>() did not.
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