Create 4 rows of moving picture in Main Window

[houmingc]

Need to create 4 rows of moving pictures in Main Window.
Thinking it is wiser to embed the moving pictures in each QLabel.
Below is the code that create Bullet and every 50msec bullet pixmap is moved across
But i want to create it within QLabel. Please comment

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--Bullet.c--

Bullet::Bullet(QGraphicsItem *parent): QObject(), QGraphicsPixmapItem(parent){
    // draw graphics
    setPixmap(QPixmap(":/images/bullet.png"));
 
    // make a timer to move bullet every 50ms
    QTimer * timer = new QTimer(this);
    connect(timer,SIGNAL(timeout()),this,SLOT(move()));
 
    // start the timer every 50 ms
    timer->start(50);
}
 
void Bullet::move(){
            // move the bullet forward
               setPos(x()-10,y());
           // if the bullet is off the screen, destroy it
              if (pos().x() < 0){
              scene()->removeItem(this);
              delete this;
    }
}
 
 
//---Bullet.h
#ifndef BULLET_H
#define BULLET_H
 
#include <QGraphicsPixmapItem>
#include <QGraphicsItem>
#include <QObject>
 
class Bullet: public QObject,public QGraphicsPixmapItem {
    Q_OBJECT
public:
    Bullet(QGraphicsItem * parent=0);
public slots:
    void move();
};
 
#endif // BULLET_H

 main.cpp
 
         // create the scene
         scene = new QGraphicsScene();
         scene->setSceneRect(0,0,800,600);
         ui->graphicsView->setScene(scene);
 
        // Label created
        imageLabel = new QLabel;
        imageLabel ->setBackgroundRole(QPalette::Base);
 
        //Bullet created
        Bullet * bullet = new Bullet();
        bullet->setPos(x(),y());
        scene()->addItem(bullet);
 @