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#include <QGraphicsPixmapItem>

class QPacMan : public QGraphicsPixmapItem
{
    Q_OBJECT
public:
    explicit QPacMan(QGraphicsItem * parent = 0);

signals:

public slots:

private:

};
....
#include "QPacMan.h"
#include <QGraphicsPixmapItem>

QPacMan::QPacMan(QGraphicsItem * parent):QGraphicsPixmapItem(parent)
{
    //
}
....
#include <QApplication>
#include <QtGui>
#include <QPacMan.h>

int main(int argc, char *argv[])
{
        QApplication app(argc, argv);
        QGraphicsView *view = new QGraphicsView;
        QGraphicsScene *scene = new QGraphicsScene;
        QPacMan *pacman = new QPacMan;
        view->setScene(scene);
        scene->addItem(pacman);
        scene->addPixmap(QPixmap("pacman.jpg"));
        view->show();
        return app.exec();
}

moc_QPacMan.cpp:41: error: ‘staticMetaObject’ is not a member of ‘QGraphicsPixmapItem’
/usr/include/qt4/QtCore/qobject.h: In member function ‘virtual const QMetaObject* QPacMan::metaObject() const’:
/usr/include/qt4/QtCore/qobject.h:296: error: ‘QScopedPointer<QObjectData, QScopedPointerDeleter<QObjectData> > QObject::d_ptr’ is protected
moc_QPacMan.cpp:51: error: within this context
/usr/include/qt4/QtCore/qobject.h:296: error: object missing in reference to ‘QObject::d_ptr’
moc_QPacMan.cpp:51: error: from this location
/usr/include/qt4/QtCore/qobject.h:296: error: ‘QScopedPointer<QObjectData, QScopedPointerDeleter<QObjectData> > QObject::d_ptr’ is protected
moc_QPacMan.cpp:51: error: within this context
/usr/include/qt4/QtCore/qobject.h:296: error: object missing in reference to ‘QObject::d_ptr’
moc_QPacMan.cpp:51: error: from this location
moc_QPacMan.cpp: In member function ‘virtual void* QPacMan::qt_metacast(const char*)’:
moc_QPacMan.cpp:59: error: ‘qt_metacast’ is not a member of ‘QGraphicsPixmapItem’
moc_QPacMan.cpp: In member function ‘virtual int QPacMan::qt_metacall(QMetaObject::Call, int, void**)’:
moc_QPacMan.cpp:64: error: ‘qt_metacall’ is not a member of ‘QGraphicsPixmapItem’

timer = new QTimer(this);
timer->start(100);

QPacMan::QPacMan(QGraphicsItem * parent):QGraphicsPixmapItem(parent)
{
  timer = new QTimer(this);
  Start(100);
}
QPacMan::Start(int timeOut)
{
  timer->start(timeOut);
}