Question

For ex. I got:
“wrapper.h”

class wrapper : public QWidget
{
    Q_OBJECT
    public:
    Wrapped_class m_class;

    private:
    QTimer* m_timer;
}

“Wrapped_class.h”

class Wrapped_class
{
public:
Wrapped_class();
public slots:
f(); // slot which is called when m_timer send signal timeout()

}

“Wrapped_class.cpp”

Wrapped_class::Wrapped_class()
{
QOBject::connect(wrapper::m_timer, SIGNAL(timeout()), this, SLOT( f()))
}

I get error that wrapper::m_timer in not accessible

Answer 1

You need a pointer or reference to the class to access it’s non static members. Pass a pointer to the wrapped class when it’s being wrapped

add something like this to your Wrapped_class:

void Wrapped_class::setWrapper(wrapper *w)
{
    m_wrapper = w;
}

and call this function when the object is being wrapped. Initialize m_rapper to nullptr in constructor