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-rw-r--r--examples/opengl/cube/mainwidget.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/examples/opengl/cube/mainwidget.h b/examples/opengl/cube/mainwidget.h
index c6da29f..eb509d0 100644
--- a/examples/opengl/cube/mainwidget.h
+++ b/examples/opengl/cube/mainwidget.h
@@ -48,8 +48,10 @@
#include <QQuaternion>
#include <QVector2D>
+QT_BEGIN_NAMESPACE
class QBasicTimer;
class QGLShaderProgram;
+QT_END_NAMESPACE
class GeometryEngine;