keyPressEvent(QKeyEvent*) is not going to QGraphicsItem & going into infinite loop

[prasad.ece2]

hi, i have to catch keyPressEvent(QKeyEvent* f_event) on item (derived from QGraphicsObject), i am not able to get the event in item, instead it is going into infinite loop in scene itself.
below is the code, thanks in advance.

//scene
void MyScene::keyPressEvent(QKeyEvent* f_event)
{
     if(item && item->isSelected())
     {
       switch (f_event->key()) 
       {
            case Qt::Key_Up:
            case Qt::Key_Down:
            case Qt::Key_Left:
            case Qt::Key_Right:
            Item->setFocus();                //i have set item is focusable flag in item constructor.
            QGraphicsScene::keyPressEvent(f_event);    //here its going back to the MyScene::keyPressEvent(QKeyEvent* f_event)again  & into infinite loop, Item::keyPressEvent(QKeyEvent* f_event) is not calling at all
            break;
           default:
           QGraphicsScene::keyPressEvent(f_event);
      }
}
 
//item
 
class Item : public QGraphicsObject
{
 
    Q_OBJECT
/////////////////......///////
 
protected:
    Q_DISABLE_COPY(Item);
 
    void mousePressEvent(QGraphicsSceneMouseEvent * f_event);
    void mouseMoveEvent(QGraphicsSceneMouseEvent * f_event);
    void mouseReleaseEvent(QGraphicsSceneMouseEvent * f_event);
    void keyPressEvent(QKeyEvent* f_event);
    void contextMenuEvent(QGraphicsSceneContextMenuEvent * f_event);
};
 
void Item::keyPressEvent(QKeyEvent* f_event)
{
 
    QGraphicsObject::keyPressEvent(f_event);         
    //qDebug()<<"keyPressEvent";
    f_event->accept();
}

//scene
void MyScene::keyPressEvent(QKeyEvent* f_event)
{
     if(item && item->isSelected())
     {
       switch (f_event->key()) 
       {
            case Qt::Key_Up:
            case Qt::Key_Down:
            case Qt::Key_Left:
            case Qt::Key_Right:
            Item->setFocus();                //i have set item is focusable flag in item constructor.
            QGraphicsScene::keyPressEvent(f_event);    //here its going back to the MyScene::keyPressEvent(QKeyEvent* f_event)again  & into infinite loop, Item::keyPressEvent(QKeyEvent* f_event) is not calling at all
            break;
           default:
           QGraphicsScene::keyPressEvent(f_event);
      }
}

//item

class Item : public QGraphicsObject
{

    Q_OBJECT
/////////////////......///////

protected:
    Q_DISABLE_COPY(Item);

    void mousePressEvent(QGraphicsSceneMouseEvent * f_event);
    void mouseMoveEvent(QGraphicsSceneMouseEvent * f_event);
    void mouseReleaseEvent(QGraphicsSceneMouseEvent * f_event);
    void keyPressEvent(QKeyEvent* f_event);
    void contextMenuEvent(QGraphicsSceneContextMenuEvent * f_event);
};

void Item::keyPressEvent(QKeyEvent* f_event)
{
    
    QGraphicsObject::keyPressEvent(f_event);         
    //qDebug()<<"keyPressEvent";
    f_event->accept();
}

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[prasad.ece2]

can any one help me regarding this problem please...?