1 files changed, 3 insertions, 7 deletions
diff --git a/examples/opengl/legacy/overpainting/glwidget.cpp b/examples/opengl/legacy/overpainting/glwidget.cpp
index f98d043c5c..c4558ce785 100644
--- a/examples/opengl/legacy/overpainting/glwidget.cpp
+++ b/examples/opengl/legacy/overpainting/glwidget.cpp
@@ -130,7 +130,7 @@ void GLWidget::initializeGL()
     glEnable(GL_MULTISAMPLE);
 
     logo = new QtLogo(this);
-    logo->setColor(qtGreen.dark());
+    logo->setColor(qtGreen.darker());
 }
 //! [2]
 
@@ -163,7 +163,7 @@ void GLWidget::paintEvent(QPaintEvent *event)
 //! [4]
 
 //! [6]
-    qglClearColor(qtPurple.dark());
+    qglClearColor(qtPurple.darker());
     glShadeModel(GL_SMOOTH);
     glEnable(GL_DEPTH_TEST);
     glEnable(GL_CULL_FACE);
@@ -247,12 +247,8 @@ void GLWidget::createBubbles(int number)
 //! [13]
 void GLWidget::animate()
 {
-    QMutableListIterator<Bubble*> iter(bubbles);
-
-    while (iter.hasNext()) {
-        Bubble *bubble = iter.next();
+    for (Bubble *bubble : qAsConst(bubbles))
         bubble->move(rect());
-    }
     update();
 }
 //! [13]