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robot.h Example File
^{graphicsview/dragdroprobot/robot.h}

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 #ifndef ROBOT_H
 #define ROBOT_H

 #include <QGraphicsItem>

 class QGraphicsSceneMouseEvent;
 class QTimeLine;

 class RobotPart : public QGraphicsItem
 {
 public:
     RobotPart(QGraphicsItem *parent = 0);

 protected:
     void dragEnterEvent(QGraphicsSceneDragDropEvent *event);
     void dragLeaveEvent(QGraphicsSceneDragDropEvent *event);
     void dropEvent(QGraphicsSceneDragDropEvent *event);

     QPixmap pixmap;
     QColor color;
     bool dragOver;
 };

 class RobotHead : public RobotPart
 {
 public:
     RobotHead(QGraphicsItem *parent = 0);

     QRectF boundingRect() const;
     void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget = 0);

     enum { Type = UserType + 1 };
     int type() const;
 };

 class RobotTorso : public RobotPart
 {
 public:
     RobotTorso(QGraphicsItem *parent = 0);

     QRectF boundingRect() const;
     void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget = 0);
 };

 class RobotLimb : public RobotPart
 {
 public:
     RobotLimb(QGraphicsItem *parent = 0);

     QRectF boundingRect() const;
     void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget = 0);
 };

 class Robot : public RobotPart
 {
 public:
     Robot();
     ~Robot();

     QRectF boundingRect() const;
     void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget = 0);

 private:
     QTimeLine *timeLine;
 };

 #endif