delete QSettings when uninstalling Qt application

[kenouz1234]

Hello,
How I can remove automatically the data of QSettings when uninstalling application?

(the QSettings is stored in their default location by using:

QSettings setting(“Company", "MyApplication");
QVariant value = 10;
setting.setValue("Engine/TimeOutPeriod", value);

)

[Jon Heron]

settings.clear();

Will clear all of the data from the settings file.
Cheers,
Jon

[danhicksbyron]

Of course, you need to somehow automatically run that during app removal.

[jakoskin]

If you store the settings file in your private directory (use user scope for settings) they will be automatically deleted. For system scope this becomes issue.
We had discussion about this, thought there was a bugreport even.. http://bugreports.qt.nokia.com/browse/QTBUG-16229

[tineursic]

The private dir fixes the issue on 5th and ^3. But it doesn't work on 3rd (Qt4.6.3 or Qt4.7.3)

QSettings *settings;
settings = new QSettings(QApplication::applicationDirPath().append(QDir::separator()).append("set.ini"), QSettings::IniFormat);
settings->setValue("test",1);

While the app is running the value "1" can be read:

settings->value("test", 0)

After restarting the app, the value is gone.
The above code works fine on 5th and ^3.

Tried stuff like:

QSettings::setPath(QSettings::IniFormat, QSettings::UserScope, apppath);

No luck.

[tineursic]

Solved.
Simply made a subdir in the private folder and store the settings file there.

    //set Settings file path
    QString thePath = QApplication::applicationDirPath().append(QDir::separator()).append("set");
    if (QDir(thePath).exists())
    {
        settings = new QSettings(thePath.append(QDir::separator()).append("set.ini"), QSettings::NativeFormat);
    }