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void QGraphicsView::mousePressEvent(QMouseEvent* pe)
{
this->setCursor(Qt::PointingHandCursor);
}

void QGraphicsView::mouseReleaseEvent(QMouseEvent* pe)
{
this->unsetCursor();
}

#include <QApplication>
#include "testmouseevents.h"
#include <QBoxLayout>
#include <QGraphicsView>

int main(int argc, char *argv[])
{
QApplication app(argc, argv);
QWidget mw;
QGraphicsView *graphicsView = new QGraphicsView;
QBoxLayout *d = new QBoxLayout(QBoxLayout::LeftToRight);
d->addWidget(graphicsView);
mw.setLayout(d);
mw.show();
return app.exec();
}

void QGraphicsView::mousePressEvent(QMouseEvent* pe)
{
this->setCursor(Qt::PointingHandCursor);
}

void QGraphicsView::mouseReleaseEvent(QMouseEvent* pe)
{
this->unsetCursor();
}

#ifndef MAINVIEW_H
#define MAINVIEW_H

#include <QGraphicsView>

class MainView : public QGraphicsView
{
    Q_OBJECT

public:
    MainView(QWidget *parent = 0);

protected:
	void mousePressEvent(QMouseEvent* pe);
	void mouseReleaseEvent(QMouseEvent* pe);
};

#endif

#include <mainview.h>

MainView::MainView(QWidget *parent)
{
	QGraphicsView *graphicsView;
}

void MainView::mousePressEvent(QMouseEvent* pe)
{
this->setCursor(Qt::PointingHandCursor);
}

void MainView::mouseReleaseEvent(QMouseEvent* pe)
{
this->unsetCursor();
}