a QSettings global variable

[ilpaso]

hi all,
I'd like to use a QSettings variable in all the functions of a class.
I declared inside the header file myapp.h:

public:
    QSettings settings;

public:
    QSettings settings;

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and in the constructor inside myapp.cpp

this->settings = QSettings("./settings/settings.ini", QSettings::IniFormat);

this->settings = QSettings("./settings/settings.ini", QSettings::IniFormat);

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the compiler returns the error:
qsettings.h:304: error: ‘QSettings& QSettings::operator=(const QSettings&)’ is private

any ideas?
thank you

ilpaso