Crashes When Using QGraphicsScene?

[steadi]

Hello,

I am still pretty new to Qt and it is pretty different from most of the editors I have ever used before. I have started a simple project - When you click on a QGraphicsScene it draws a red background. However, upon clicking on the scene it crashes the program.

Can anyone see where I went wrong, for the life of me I cannot figure this one out?

Scene Class:

class scene2 : public QGraphicsScene
{
   #include <QMessageBox>
 
    public:
    QGraphicsScene *scene;
    void mousePressEvent(QGraphicsSceneMouseEvent *event);
};

class scene2 : public QGraphicsScene
{
   #include <QMessageBox>

    public:
    QGraphicsScene *scene;
    void mousePressEvent(QGraphicsSceneMouseEvent *event);
};

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Set's Scene To View:

MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);
 
    scene = new scene2;
    ui->GraphicsMap->setScene(scene);
    scene->setSceneRect(0,0,900,900);
}

MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);

    scene = new scene2;
    ui->GraphicsMap->setScene(scene);
    scene->setSceneRect(0,0,900,900);
}

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On Click:

void scene2::mousePressEvent(QGraphicsSceneMouseEvent *event)
{
    QBrush whiteBrush(Qt::red);
    scene->setBackgroundBrush(whiteBrush);
}

void scene2::mousePressEvent(QGraphicsSceneMouseEvent *event)
{
    QBrush whiteBrush(Qt::red);
    scene->setBackgroundBrush(whiteBrush);
}

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Thanks for any help guys,
Matt <Noob>