clean up public headers

If this project is treated as a Qt module, it didn't build without these
fixes because QT_NO_KEYWORDS and -Werror=zero-as-null-pointer-constant
are enforced.

Change-Id: Ie3ab8597b338478a5a34ed49d176ce9a647b1e0e
Reviewed-by: Laszlo Agocs <laszlo.agocs@qt.io>
Reviewed-by: Teemu Holappa <teemu.holappa@qt.io>
Reviewed-by: Samuli Piippo <samuli.piippo@qt.io>
Reviewed-by: Andy Nichols <andy.nichols@qt.io>

1 files changed, 2 insertions, 2 deletions

diff --git a/src/displaysettings/displaysettings.h b/src/displaysettings/displaysettings.h
index c0032d8..c6f4bab 100644
--- a/src/displaysettings/displaysettings.h
+++ b/src/displaysettings/displaysettings.h
@@ -42,7 +42,7 @@ class Q_DECL_EXPORT DisplaySettings : public QObject
     Q_PROPERTY(bool physicalScreenSizeOverride READ physicalScreenSizeOverride WRITE setPhysicalScreenSizeOverride NOTIFY physicalScreenSizeOverrideChanged)
 
 public:
-    DisplaySettings(QObject *parent = 0);
+    DisplaySettings(QObject *parent = nullptr);
     ~DisplaySettings();
 
     int displayBrightness();
@@ -54,7 +54,7 @@ public Q_SLOTS:
     void setPhysicalScreenSizeInch(int inches);
     void setPhysicalScreenSizeOverride(bool enable);
 
-signals:
+Q_SIGNALS:
     void displayBrightnessChanged(int newValue);
     void physicalScreenSizeInchChanged(int newInches);
     void physicalScreenSizeOverrideChanged(bool newValue);