Use Q_DECLARE_OVERRIDE

backgroundselector.h

@@ -40,7 +40,7 @@ class BackgroundSelector : public QWidget {
         void useRandomBackgroundPicturesChanged(bool state);
         void previewBackgroundPicture();
     protected:
-        void changeEvent(QEvent *e);
+        void changeEvent(QEvent *e) Q_DECL_OVERRIDE;
         void enableSettings(bool enable=true);
     private:
         Ui::KBounceBackgroundSelector *ui;

board.h

@@ -47,7 +47,7 @@ class KBounceBoard: public QGraphicsObject
 
         QPixmap applyWallsOn(QPixmap background) const;
         void resize( QSize& size );
-        void paint(QPainter *, const QStyleOptionGraphicsItem *, QWidget *) {}
+        void paint(QPainter *, const QStyleOptionGraphicsItem *, QWidget *) Q_DECL_OVERRIDE {}
 
         void newLevel( int level );
         void setPaused( bool );
@@ -62,7 +62,7 @@ class KBounceBoard: public QGraphicsObject
         void checkCollisions();
 
         QPoint mapPosition( const QPointF& pos ) const;
-        QRectF boundingRect() const;
+        QRectF boundingRect() const Q_DECL_OVERRIDE;
 
         void setBallVelocity(qreal velocity);
         void setWallVelocity(qreal velocity);

gamewidget.h

@@ -48,7 +48,7 @@ class KBounceGameWidget : public QGraphicsView
         KBounceGameWidget::State state() const { return m_state; }
         KBounceRenderer* renderer() { return &m_renderer; }
 
-        QSize minimumSizeHint() const;
+        QSize minimumSizeHint() const Q_DECL_OVERRIDE;
 
     public slots:
         void closeGame();
@@ -74,9 +74,9 @@ class KBounceGameWidget : public QGraphicsView
         void tick();
 
     protected:
-        virtual void resizeEvent( QResizeEvent* event );
-        virtual void mouseReleaseEvent( QMouseEvent* event );
-        void focusOutEvent(QFocusEvent *event);
+        void resizeEvent( QResizeEvent* event ) Q_DECL_OVERRIDE;
+        void mouseReleaseEvent( QMouseEvent* event ) Q_DECL_OVERRIDE;
+        void focusOutEvent(QFocusEvent *event) Q_DECL_OVERRIDE;
         void closeLevel();
         void newLevel();
         void updateCursor();

mainwindow.h

@@ -58,8 +58,8 @@ class KBounceMainWindow : public KXmlGuiWindow
         void initXMLUI();
         void highscore();
 
-        void focusOutEvent( QFocusEvent * );
-        void focusInEvent ( QFocusEvent * );
+        void focusOutEvent( QFocusEvent * ) Q_DECL_OVERRIDE;
+        void focusInEvent ( QFocusEvent * ) Q_DECL_OVERRIDE;
 
         KBounceGameWidget* m_gameWidget;