2 files changed, 4 insertions, 7 deletions
diff --git a/examples/opengl/qopenglwidget/glwidget.cpp b/examples/opengl/qopenglwidget/glwidget.cpp
index 946b2bec67..5057291f12 100644
--- a/examples/opengl/qopenglwidget/glwidget.cpp
+++ b/examples/opengl/qopenglwidget/glwidget.cpp
@@ -399,12 +399,9 @@ void GLWidget::paintGL()
 
     painter.end();
 
-    QMutableListIterator<Bubble*> iter(m_bubbles);
-
-    while (iter.hasNext()) {
-        Bubble *bubble = iter.next();
+    for (Bubble *bubble : qAsConst(m_bubbles))
         bubble->move(rect());
-    }
+
     if (!(m_frames % 100)) {
         m_time.start();
         m_frames = 0;
diff --git a/examples/opengl/qopenglwidget/glwidget.h b/examples/opengl/qopenglwidget/glwidget.h
index de7805a907..0ad2581cb8 100644
--- a/examples/opengl/qopenglwidget/glwidget.h
+++ b/examples/opengl/qopenglwidget/glwidget.h
@@ -56,7 +56,7 @@
 #include <QOpenGLBuffer>
 #include <QVector3D>
 #include <QMatrix4x4>
-#include <QTime>
+#include <QElapsedTimer>
 #include <QVector>
 #include <QPushButton>
 
@@ -106,7 +106,7 @@ private:
     bool m_qtLogo;
     QList<Bubble *> m_bubbles;
     int m_frames;
-    QTime m_time;
+    QElapsedTimer m_time;
     QOpenGLShader *m_vshader1;
     QOpenGLShader *m_fshader1;
     QOpenGLShader *m_vshader2;