QGraphicsView

[Shawn]

I derive a subclass from QMainWindow, I want to set the QGraphicsView object as the mainwindow's centralWidget, like below:

int main(int argc, char *argv[])
{
	QApplication a(argc, argv);
	test w;
	w.show();
	a.connect(&a, SIGNAL(lastWindowClosed()), &a, SLOT(quit()));
	return a.exec();
}
 
test::test(QWidget *parent, Qt::WFlags flags)
	: QMainWindow(parent, flags)
{
	ui.setupUi(this);
 
	QPixmap pixCT;
                pixCT.load("Resources/CT.bmp");
	QGraphicsScene scene;
	QGraphicsView view(&scene, this);
	setCentralWidget(&view);
	scene.addPixmap(pixCT);
	//view.show();
}

int main(int argc, char *argv[])
{
	QApplication a(argc, argv);
	test w;
	w.show();
	a.connect(&a, SIGNAL(lastWindowClosed()), &a, SLOT(quit()));
	return a.exec();
}

test::test(QWidget *parent, Qt::WFlags flags)
	: QMainWindow(parent, flags)
{
	ui.setupUi(this);
	
	QPixmap pixCT;
                pixCT.load("Resources/CT.bmp");
	QGraphicsScene scene;
	QGraphicsView view(&scene, this);
	setCentralWidget(&view);
	scene.addPixmap(pixCT);
	//view.show();
}

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But it doesn't work. What should I do to solve this problem ?

Thank you very much for helping!