Examples: Add Q_DECL_OVERRIDE to overridden functions

Q_DECL_OVERRIDE (which expands to 'override' for supported compiler)
helps to declare the intent (that it is an overridden function) and
force compilation error when there is no such virtual function in the
base class.
The examples should show the best practice of having it, as it may save
the programmer quite some time in case of change of API or typo in the
function name or arguments.

This change was done automatically with
clang-modernize -add-override -override-macros

And fixed MSVC compilation by removing inline for TorrentViewDelegate::paint

Change-Id: Ice66ae93fae571266f908703d5b8892b2c1ebb1a
Reviewed-by: Jędrzej Nowacki <jedrzej.nowacki@digia.com>

3 files changed, 15 insertions, 15 deletions

diff --git a/examples/widgets/painting/shared/arthurstyle.h b/examples/widgets/painting/shared/arthurstyle.h
index ede7fe860b..8b78aa14de 100644
--- a/examples/widgets/painting/shared/arthurstyle.h
+++ b/examples/widgets/painting/shared/arthurstyle.h
@@ -54,23 +54,23 @@ public:
     void drawHoverRect(QPainter *painter, const QRect &rect) const;
 
     void drawPrimitive(PrimitiveElement element, const QStyleOption *option,
-                       QPainter *painter, const QWidget *widget = 0) const;
+                       QPainter *painter, const QWidget *widget = 0) const Q_DECL_OVERRIDE;
     void drawControl(ControlElement element, const QStyleOption *option,
-                     QPainter *painter, const QWidget *widget) const;
+                     QPainter *painter, const QWidget *widget) const Q_DECL_OVERRIDE;
     void drawComplexControl(ComplexControl control, const QStyleOptionComplex *option,
-                            QPainter *painter, const QWidget *widget) const;
+                            QPainter *painter, const QWidget *widget) const Q_DECL_OVERRIDE;
     QSize sizeFromContents(ContentsType type, const QStyleOption *option,
-                           const QSize &size, const QWidget *widget) const;
+                           const QSize &size, const QWidget *widget) const Q_DECL_OVERRIDE;
 
-    QRect subElementRect(SubElement element, const QStyleOption *option, const QWidget *widget) const;
+    QRect subElementRect(SubElement element, const QStyleOption *option, const QWidget *widget) const Q_DECL_OVERRIDE;
     QRect subControlRect(ComplexControl cc, const QStyleOptionComplex *opt,
-                         SubControl sc, const QWidget *widget) const;
+                         SubControl sc, const QWidget *widget) const Q_DECL_OVERRIDE;
 
-    int pixelMetric(PixelMetric metric, const QStyleOption *option, const QWidget *widget) const;
+    int pixelMetric(PixelMetric metric, const QStyleOption *option, const QWidget *widget) const Q_DECL_OVERRIDE;
 
-    void polish(QPalette &palette);
-    void polish(QWidget *widget);
-    void unpolish(QWidget *widget);
+    void polish(QPalette &palette) Q_DECL_OVERRIDE;
+    void polish(QWidget *widget) Q_DECL_OVERRIDE;
+    void unpolish(QWidget *widget) Q_DECL_OVERRIDE;
 };
 
 #endif
diff --git a/examples/widgets/painting/shared/arthurwidgets.h b/examples/widgets/painting/shared/arthurwidgets.h
index 2d96ed63d4..02d0a56656 100644
--- a/examples/widgets/painting/shared/arthurwidgets.h
+++ b/examples/widgets/painting/shared/arthurwidgets.h
@@ -59,9 +59,9 @@ public:
         setAttribute(Qt::WA_AcceptTouchEvents);
     }
     void disableAutoBufferSwap() { setAutoBufferSwap(false); }
-    void paintEvent(QPaintEvent *) { parentWidget()->update(); }
+    void paintEvent(QPaintEvent *) Q_DECL_OVERRIDE { parentWidget()->update(); }
 protected:
-    bool event(QEvent *event)
+    bool event(QEvent *event) Q_DECL_OVERRIDE
     {
         switch (event->type()) {
         case QEvent::TouchBegin:
@@ -117,8 +117,8 @@ signals:
     void descriptionEnabledChanged(bool);
 
 protected:
-    void paintEvent(QPaintEvent *);
-    void resizeEvent(QResizeEvent *);
+    void paintEvent(QPaintEvent *) Q_DECL_OVERRIDE;
+    void resizeEvent(QResizeEvent *) Q_DECL_OVERRIDE;
 
 #if defined(QT_OPENGL_SUPPORT)
     GLWidget *glw;
diff --git a/examples/widgets/painting/shared/hoverpoints.h b/examples/widgets/painting/shared/hoverpoints.h
index adc920de30..7fa28c79ed 100644
--- a/examples/widgets/painting/shared/hoverpoints.h
+++ b/examples/widgets/painting/shared/hoverpoints.h
@@ -76,7 +76,7 @@ public:
 
     HoverPoints(QWidget *widget, PointShape shape);
 
-    bool eventFilter(QObject *object, QEvent *event);
+    bool eventFilter(QObject *object, QEvent *event) Q_DECL_OVERRIDE;
 
     void paintPoints();