Question

I am getting the following error when trying to build my app in Qt Creator:

error (line 3): no matching function for call to ‘QGraphicsScene::QGraphicsScene()’

The source for this is simply (file name is gamscene.cpp):

#include "gamescene.h"

GameScene::GameScene() : QGraphicsScene(parent)
{

}

I have googled around and have seen some similar issues but I don’t really understand the answers given.

Answer 1

We’ve derived from the QGraphicsScene class like so

class ImprintTemplateScene : public QGraphicsScene
{
    Q_OBJECT
public:            
    ImprintTemplateScene(QObject *parent = 0);

...
};

Notice the parent is a parameter passed to the constructor. The constructor implementation looks like:

ImprintTemplateScene::ImprintTemplateScene(QObject *parent)
    :   QGraphicsScene(parent),
        sceneMode(mode_normal),
        editingTextBox(0)
{   
}