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-rw-r--r--demos/spectrum/app/mainwidget.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/demos/spectrum/app/mainwidget.h b/demos/spectrum/app/mainwidget.h
index 846b97a..c59dbd6 100644
--- a/demos/spectrum/app/mainwidget.h
+++ b/demos/spectrum/app/mainwidget.h
@@ -50,11 +50,14 @@ class Waveform;
class LevelMeter;
class SettingsDialog;
class ToneGeneratorDialog;
+
+QT_BEGIN_NAMESPACE
class QAudioFormat;
class QLabel;
class QPushButton;
class QMenu;
class QAction;
+QT_END_NAMESPACE
/**
* Main application widget, responsible for connecting the various UI