Output is there..but code doesnt look to be Perfect..!

Hi..
I had tried to show a layout of buttons on View..it worked fine,but the return function ( retWidg() ) which i have specified in the main doesnt seems to be necessary..i mean to say is there any other solution by which i can avoid these statement and with it be more cleared in approach...

Code:

---

#include "exclass.h"
 
#include <QApplication>
#include <QGraphicsScene>
 
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
 
exclass *w = new exclass;
 
QWidget *mainW = new QWidget;
QGraphicsScene scene;
QGraphicsView view;
 
mainW = w->retWidg();
scene.addWidget(mainW);
scene.addItem(w);
 
view.setScene(&scene);
 
view.show();
return a.exec();
}
 
 
#ifndef EXCLASS_H
#define EXCLASS_H
 
#include <QtGui/QWidget>
#include <QGraphicsScene>
#include <QGraphicsView>
#include <QGraphicsItem>
#include <QPainter>
#include <QImage>
#include <QPushButton>
#include <QHBoxLayout>
//#include <QString>
//#include "ui_exclass.h"
 
class exclass :public QObject, public QGraphicsItem
{
Q_OBJECT
 
public:
    QPushButton *stopButton;
    QPushButton *playButton;
    QHBoxLayout *hboxLay;
 
    QWidget *widg; 
 
exclass(QGraphicsItem *parent = 0);
 
QWidget *retWidg();
 
QRectF boundingRect() const;
 
    void paint(QPainter *painter,const QStyleOptionGraphicsItem *option,QWidget *widget);
 
};
 
#endif // EXCLASS_H
 
 
#include "exclass.h"
 
exclass::exclass(QGraphicsItem *parent):QGraphicsItem(parent)
{
 
    hboxLay = new QHBoxLayout;
    playButton = new QPushButton;
    stopButton = new QPushButton;
    widg = new QWidget;
    hboxLay->addWidget(playButton);
    hboxLay->addWidget(stopButton);
    widg->setLayout(hboxLay);
 
}
 
 
QWidget* exclass::retWidg()
{
    return widg;    
}
 
QRectF exclass::boundingRect() const 
{
 
}
 
void exclass:paint(QPainter *painter,const QStyleOptionGraphicsItem *option,QWidget *widget)
{
 
}

---

You could simply add Widget in the scene.

Code:

---

main()
{
QWidget *widget = new QWidget();
// set the layout on widget;
// add play styop buttons to widget;
 
QScene scene;
scene.addWidget(widget);
QGraphicsView view(&scene);
 
view.show();
}

---

so what i understand ,you are saying that i should implement everything in the main function,i started the things the same way but then to use drawBackGround() function which is protected i had to develop a class which look like this...i hope you understand..!!:)