3 files changed, 11 insertions, 11 deletions
diff --git a/examples/opengl/hellogl/glwidget.cpp b/examples/opengl/hellogl/glwidget.cpp
index 29879fa804..3a9faaca5f 100644
--- a/examples/opengl/hellogl/glwidget.cpp
+++ b/examples/opengl/hellogl/glwidget.cpp
@@ -100,7 +100,7 @@ void GLWidget::setXRotation(int angle)
     if (angle != xRot) {
         xRot = angle;
         emit xRotationChanged(angle);
-        updateGL();
+        update();
     }
 }
 //! [5]
@@ -111,7 +111,7 @@ void GLWidget::setYRotation(int angle)
     if (angle != yRot) {
         yRot = angle;
         emit yRotationChanged(angle);
-        updateGL();
+        update();
     }
 }
 
@@ -121,7 +121,7 @@ void GLWidget::setZRotation(int angle)
     if (angle != zRot) {
         zRot = angle;
         emit zRotationChanged(angle);
-        updateGL();
+        update();
     }
 }
 
diff --git a/examples/opengl/hellogl/glwidget.h b/examples/opengl/hellogl/glwidget.h
index 3344e931e7..0989be1dc6 100644
--- a/examples/opengl/hellogl/glwidget.h
+++ b/examples/opengl/hellogl/glwidget.h
@@ -54,8 +54,8 @@ public:
     GLWidget(QWidget *parent = 0);
     ~GLWidget();
 
-    QSize minimumSizeHint() const;
-    QSize sizeHint() const;
+    QSize minimumSizeHint() const Q_DECL_OVERRIDE;
+    QSize sizeHint() const Q_DECL_OVERRIDE;
 //! [0]
 
 //! [1]
@@ -72,11 +72,11 @@ signals:
 
 //! [2]
 protected:
-    void initializeGL();
-    void paintGL();
-    void resizeGL(int width, int height);
-    void mousePressEvent(QMouseEvent *event);
-    void mouseMoveEvent(QMouseEvent *event);
+    void initializeGL() Q_DECL_OVERRIDE;
+    void paintGL() Q_DECL_OVERRIDE;
+    void resizeGL(int width, int height) Q_DECL_OVERRIDE;
+    void mousePressEvent(QMouseEvent *event) Q_DECL_OVERRIDE;
+    void mouseMoveEvent(QMouseEvent *event) Q_DECL_OVERRIDE;
 //! [2]
 
 //! [3]
diff --git a/examples/opengl/hellogl/window.h b/examples/opengl/hellogl/window.h
index 68862fbcfe..900e6b13fc 100644
--- a/examples/opengl/hellogl/window.h
+++ b/examples/opengl/hellogl/window.h
@@ -57,7 +57,7 @@ public:
     Window();
 
 protected:
-    void keyPressEvent(QKeyEvent *event);
+    void keyPressEvent(QKeyEvent *event) Q_DECL_OVERRIDE;
 
 private:
     QSlider *createSlider();