How to draw a circle with spinbox coordinates

[Lykurg]

There you only connect! In your class SpinVariable you have to add a signal forwarding as said:

spinvariable::spinvariable(QWidget *parent) :
    QWidget(parent)
{
        spinbox = new QSpinBox;
        label = new QLabel;
 
        QHBoxLayout *layout = new QHBoxLayout;
 
        layout->addWidget(label);
        layout->addWidget(spinbox);
 
        setLayout(layout);
        QObject::connect(spinbox, SIGNAL(valueChanged(int)), this, SIGNAL(valueChanged(int)));
}

spinvariable::spinvariable(QWidget *parent) :
    QWidget(parent)
{
        spinbox = new QSpinBox;
        label = new QLabel;

        QHBoxLayout *layout = new QHBoxLayout;

        layout->addWidget(label);
        layout->addWidget(spinbox);

        setLayout(layout);
        QObject::connect(spinbox, SIGNAL(valueChanged(int)), this, SIGNAL(valueChanged(int)));
}

To copy to clipboard, switch view to plain text mode 

The

QObject::connect(spin1, SIGNAL(valueChanged(int)), area, SLOT(setposicionX(int)));

QObject::connect(spin1, SIGNAL(valueChanged(int)), area, SLOT(setposicionX(int)));

To copy to clipboard, switch view to plain text mode 

never came to action, since such a signal is never emitted!