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-rw-r--r--examples/datavisualization/audiolevels/audiolevels.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/examples/datavisualization/audiolevels/audiolevels.h b/examples/datavisualization/audiolevels/audiolevels.h
index b1845c9a..f9a7d9e5 100644
--- a/examples/datavisualization/audiolevels/audiolevels.h
+++ b/examples/datavisualization/audiolevels/audiolevels.h
@@ -35,7 +35,10 @@
using namespace QtDataVisualization;
class AudioLevelsIODevice;
+
+QT_BEGIN_NAMESPACE
class QAudioInput;
+QT_END_NAMESPACE
class AudioLevels : public QObject
{