QSettings and new QVariant Type

[baray98]

I tried to register a struct in QVariant see code below, I was trying to test if i could save it in QSetting::setValue(key,QVariant&) and found that it won't work, can someone point out my mistake ? what did i do wrong?

typedef struct s_mystruct
{
    int car;
    double wife;
    bool isActive;
   // QHash <int,QString> map;
   // QRect rect;
}
t_mystruct;
Q_DECLARE_METATYPE(t_mystruct); // registering my struct here
 
int main (int argc,char *argv[])
{
    QApplication app(argc,argv);
    t_mystruct st;
    st.car = 2;
    st.wife = 3.5;
    st.isActive = false;
    //st.rect = QRect(1,2,3,4);
 
    QSettings settings("someCode.xfg",QSettings::IniFormat);
 
    settings.setValue("NoOfCars",st.car);
    settings.setValue("wife",st.wife);
    settings.setValue("isActive",st.isActive);
    QVariant s;
    s.setValue(st);
    settings.setValue("struct",s); // nothing  is saved on somCode.xfg but compiled ok
    /* note: Process terminated with status 1 (0 minutes, 3 seconds)
                is the result when i try to run my program with
                settings.setValue("struct",s) line on
*/
 
    QPushButton *mainWin = new QPushButton; //just to have something going
    mainWin->show();
 
    return app.exec();
 
}

typedef struct s_mystruct
{
    int car;
    double wife;
    bool isActive;
   // QHash <int,QString> map;
   // QRect rect;
}
t_mystruct;
Q_DECLARE_METATYPE(t_mystruct); // registering my struct here

int main (int argc,char *argv[])
{
    QApplication app(argc,argv);
    t_mystruct st;
    st.car = 2;
    st.wife = 3.5;
    st.isActive = false;
    //st.rect = QRect(1,2,3,4);

    QSettings settings("someCode.xfg",QSettings::IniFormat);

    settings.setValue("NoOfCars",st.car);
    settings.setValue("wife",st.wife);
    settings.setValue("isActive",st.isActive);
    QVariant s;
    s.setValue(st);
    settings.setValue("struct",s); // nothing  is saved on somCode.xfg but compiled ok
    /* note: Process terminated with status 1 (0 minutes, 3 seconds)
                is the result when i try to run my program with
                settings.setValue("struct",s) line on
*/

    QPushButton *mainWin = new QPushButton; //just to have something going
    mainWin->show();

    return app.exec();
  
}

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baray98