Add explicit and make public headers compile with -Wzero-as-null-pointer-constant

... or equivalent.

QtBase 5.6 headers already compile that way, so let the other
modules follow suit.

Cleaned up placement of * and & in parameters as a drive-by.

Added explicit where it was missing as a drive-by. This is
not a source-incompatible change, because code that breaks
by this is a bug. Let's not have this sitting around in an LTS.

Task-number: QTBUG-45291
Change-Id: If81ed0c71393aee21d347f5ade4bf3fcc07cd82f
Reviewed-by: Yoann Lopes <yoann.lopes@theqtcompany.com>

1 files changed, 5 insertions, 5 deletions

diff --git a/src/multimedia/recording/qmediarecorder.h b/src/multimedia/recording/qmediarecorder.h
index 6f275b305..71e8ab5cf 100644
--- a/src/multimedia/recording/qmediarecorder.h
+++ b/src/multimedia/recording/qmediarecorder.h
@@ -100,7 +100,7 @@ public:
         OutOfSpaceError
     };
 
-    QMediaRecorder(QMediaObject *mediaObject, QObject *parent = 0);
+    explicit QMediaRecorder(QMediaObject *mediaObject, QObject *parent = Q_NULLPTR);
     ~QMediaRecorder();
 
     QMediaObject *mediaObject() const;
@@ -131,16 +131,16 @@ public:
     QString audioCodecDescription(const QString &codecName) const;
 
     QList<int> supportedAudioSampleRates(const QAudioEncoderSettings &settings = QAudioEncoderSettings(),
-                                         bool *continuous = 0) const;
+                                         bool *continuous = Q_NULLPTR) const;
 
     QStringList supportedVideoCodecs() const;
     QString videoCodecDescription(const QString &codecName) const;
 
     QList<QSize> supportedResolutions(const QVideoEncoderSettings &settings = QVideoEncoderSettings(),
-                                      bool *continuous = 0) const;
+                                      bool *continuous = Q_NULLPTR) const;
 
     QList<qreal> supportedFrameRates(const QVideoEncoderSettings &settings = QVideoEncoderSettings(),
-                                     bool *continuous = 0) const;
+                                     bool *continuous = Q_NULLPTR) const;
 
     QAudioEncoderSettings audioSettings() const;
     QVideoEncoderSettings videoSettings() const;
@@ -187,7 +187,7 @@ Q_SIGNALS:
     void availabilityChanged(QMultimedia::AvailabilityStatus availability);
 
 protected:
-    QMediaRecorder(QMediaRecorderPrivate &dd, QMediaObject *mediaObject, QObject *parent = 0);
+    QMediaRecorder(QMediaRecorderPrivate &dd, QMediaObject *mediaObject, QObject *parent = Q_NULLPTR);
     bool setMediaObject(QMediaObject *object);
 
     QMediaRecorderPrivate *d_ptr;