Qlist declaration

[Javeria]

I have made this object class, but i cant use it in the QList, it gives access to private member issue :
@#ifndef BOX_H
#define BOX_H
#include "opencv2/highgui/highgui.hpp"
#include "opencv2/imgproc/imgproc.hpp"

#include <iostream>

using namespace cv;
using namespace std;

#include <QObject>

class Box:public QObject
{
Q_OBJECT
public:
void Set_id(int x);
void Set_uitype(string y);
void Set_parent(int x);
void Set_position(string y);
void Set_coordinates(Rect x);
string get_uitype();
int get_id();
int get_parent();
string get_position();
Rect get_coordiantes();
int id;
string ui_type;
int parent;
string position;
Rect coordinates;
};

#endif // BOX_H
@

[Zlatomir]

QList is copying the objects you insert into it, but you can't copy QObjets (any instance of the class derived from QObject) look in documentation "here":http://doc.qt.io/qt-5/qobject.html#Q_DISABLE_COPY
To solve your issue you can create a QList that contains pointers, so must use a QList<Box*>

[Javeria]

But i cant even do that if i use c++ vectors, and i have tried to use pointers but it doesnt save the right values of the object' s members

[Zlatomir]

std::vector also stores a copy of your data, so it's the same issue.
If you use pointers and got wrong values it might be that the object get de-allocated before you try to get the values, do you allocate the memory on heap?

[Javeria]

No I dint do that, how should I do it?