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.

Added explicit where it was missing. 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.

Change-Id: I579e8714f94884dc555b673c9f85508f17cdc99d
Task-number: QTBUG-45291
Reviewed-by: Miikka Heikkinen <miikka.heikkinen@theqtcompany.com>

1 files changed, 18 insertions, 18 deletions

diff --git a/src/datavisualization/data/qitemmodelbardataproxy.h b/src/datavisualization/data/qitemmodelbardataproxy.h
index 2e756019..7de8ebf5 100644
--- a/src/datavisualization/data/qitemmodelbardataproxy.h
+++ b/src/datavisualization/data/qitemmodelbardataproxy.h
@@ -62,24 +62,24 @@ public:
         MMBCumulative = 3
     };
 
-    explicit QItemModelBarDataProxy(QObject *parent = 0);
-    QItemModelBarDataProxy(QAbstractItemModel *itemModel, QObject *parent = 0);
-    QItemModelBarDataProxy(QAbstractItemModel *itemModel, const QString &valueRole,
-                           QObject *parent = 0);
-    QItemModelBarDataProxy(QAbstractItemModel *itemModel, const QString &rowRole,
-                           const QString &columnRole, const QString &valueRole,
-                           QObject *parent = 0);
-    QItemModelBarDataProxy(QAbstractItemModel *itemModel, const QString &rowRole,
-                           const QString &columnRole, const QString &valueRole,
-                           const QString &rotationRole, QObject *parent = 0);
-    QItemModelBarDataProxy(QAbstractItemModel *itemModel, const QString &rowRole,
-                           const QString &columnRole, const QString &valueRole,
-                           const QStringList &rowCategories, const QStringList &columnCategories,
-                           QObject *parent = 0);
-    QItemModelBarDataProxy(QAbstractItemModel *itemModel, const QString &rowRole,
-                           const QString &columnRole, const QString &valueRole,
-                           const QString &rotationRole, const QStringList &rowCategories,
-                           const QStringList &columnCategories, QObject *parent = 0);
+    explicit QItemModelBarDataProxy(QObject *parent = Q_NULLPTR);
+    explicit QItemModelBarDataProxy(QAbstractItemModel *itemModel, QObject *parent = Q_NULLPTR);
+    explicit QItemModelBarDataProxy(QAbstractItemModel *itemModel, const QString &valueRole,
+                                    QObject *parent = Q_NULLPTR);
+    explicit QItemModelBarDataProxy(QAbstractItemModel *itemModel, const QString &rowRole,
+                                    const QString &columnRole, const QString &valueRole,
+                                    QObject *parent = Q_NULLPTR);
+    explicit QItemModelBarDataProxy(QAbstractItemModel *itemModel, const QString &rowRole,
+                                    const QString &columnRole, const QString &valueRole,
+                                    const QString &rotationRole, QObject *parent = Q_NULLPTR);
+    explicit QItemModelBarDataProxy(QAbstractItemModel *itemModel, const QString &rowRole,
+                                    const QString &columnRole, const QString &valueRole,
+                                    const QStringList &rowCategories, const QStringList &columnCategories,
+                                    QObject *parent = Q_NULLPTR);
+    explicit QItemModelBarDataProxy(QAbstractItemModel *itemModel, const QString &rowRole,
+                                    const QString &columnRole, const QString &valueRole,
+                                    const QString &rotationRole, const QStringList &rowCategories,
+                                    const QStringList &columnCategories, QObject *parent = Q_NULLPTR);
     virtual ~QItemModelBarDataProxy();
 
     void setItemModel(QAbstractItemModel *itemModel);