I'm not so great at C++, so maybe I'm taking the wrong approach here, but I'm trying to make a garbage collector in QT. I've got most of it worked out, but I want to connect all instances of the onCreate() signal to a slot on said garbage collector, including those that haven't yet been made.

Is this possible? Is there a better approach?

Below is my header, for context. The idea is that it's a singleton which will be called whenever a page is pop()'d off my main StackView (at which point it will clear all items associated with said view).

#ifndef GARBAGECOLLECTOR_H
#define GARBAGECOLLECTOR_H

#include <QObject>
#include <QList>

class garbageCollector : public QObject
{
    Q_OBJECT
private:
    explicit garbageCollector(QObject *parent = nullptr);
    garbageCollector* instance;
    QList<QObject*>* objectList;

public:
    garbageCollector* getInstance();

signals:

public slots:
    void cleanup();
    void addItem();
};

#endif // GARBAGECOLLECTOR_H