QGraphicsView Inheritance

[Akito_Kami]

I am trying to implement a mouse scroll zoom function as a child class for QGraphicsView.
When compiling I get the error: " error C2247: 'QObject::setObjectName' not accessible because 'CustomGraphicsView' uses 'private' to inherit from 'QGraphicsView'".

This occurs for every function call from QGraphicsView.

I used QtCreator's promote to to change my qgraphicsview to my customgraphicsview class.
My code is as follows:

customgraphicsview.h

#ifndef CUSTOMGRAPHICSVIEW_H
#define CUSTOMGRAPHICSVIEW_H

#include <QGraphicsView>
#include <QtWidgets>
#include <QWidget>

class CustomGraphicsView : QGraphicsView
{
public:
    CustomGraphicsView(QWidget* parent = 0);

protected:
    virtual void wheelEvent(QWheelEvent *event);
private:
    const double scaleFactor = 1.2
};

#endif // CUSTOMGRAPHICSVIEW_H

customgraphicsview.cpp

#include "customgraphicsview.h"

CustomGraphicsView::CustomGraphicsView(QWidget *parent) : QGraphicsView(parent)
{

}

void CustomGraphicsView::wheelEvent(QWheelEvent *event)
{
    setTransformationAnchor(QGraphicsView::AnchorViewCenter);
    if (event->delta() > 0) {
        scale(scaleFactor, scaleFactor);
    } else {
        scale(1/scaleFactor, 1/scaleFactor);
    }
}

I am currently on Qt 5.7 using MSVC.

[sneubert]

change inheritance to public:

class CustomGraphicsView : public QGraphicsView