Qgraphicsitem drag and drop

i have a problem with qt i want to drag an image and use of Qgraphicspixmapitem and dragenterevent but it doesnt appear in the console ? but other function like hoverEnterEvent work corectly??? hear is the code: please help?
:

Code:

---

#ifndef BUTTON_H
#define BUTTON_H
 
#include <QGraphicsObject>
#include <QGraphicsPixmapItem>
#include <QPixmap>
#include <QGraphicsSceneMouseEvent>
#include <QGraphicsSceneHoverEvent>
#include <QDrag>
 
class button : public QGraphicsPixmapItem
{
public:
    button(const QPixmap &);
    button(){setAcceptHoverEvents(1);
        setAcceptDrops(true);}
    void changepic( QPixmap,int ,int);
    void mousePressEvent(QGraphicsSceneMouseEvent*event);
    void dragenterEvent(QGraphicsSceneDragDropEvent *event){
 
        event->setAccepted(1);
       qDebug("drag");
    }
    void dropEvent(QGraphicsSceneDragDropEvent *event){
       qDebug("drop");
    }
 
    void hoverEnterEvent(QGraphicsSceneHoverEvent *event){
 
           // do something
       // this->setPos(this->x()+10,this->y()+10);
 
             qDebug("k");
 
           QGraphicsItem::hoverMoveEvent(event);
       }
    void mouseReleaseEvent(QGraphicsSceneMouseEvent *event);
 
 
 
};
 
#endif // BUTTON_H

---

There is a difference between dragenterEvent and dragEnterEvent.

hi everyone

can anybody give me a simple example that i can drag and drop QGraphicsItem by using of :

void dragEnterEvent(QGraphicsSceneDragDropEvent *event)
very thanks.