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.

Change-Id: Iae48c528666459ebb368cd57615f4ead4147f872
Task-number: QTBUG-45291
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@theqtcompany.com>

1 files changed, 5 insertions, 5 deletions

diff --git a/src/activeqt/container/qaxobject.h b/src/activeqt/container/qaxobject.h
index 5c62303..41a8f59 100644
--- a/src/activeqt/container/qaxobject.h
+++ b/src/activeqt/container/qaxobject.h
@@ -53,9 +53,9 @@ public:
     QObject* qObject() const Q_DECL_OVERRIDE { return static_cast<QObject *>(const_cast<QAxObject *>(this)); }
     const char *className() const Q_DECL_OVERRIDE;
 
-    QAxObject(QObject *parent = 0);
-    QAxObject(const QString &c, QObject *parent = 0);
-    QAxObject(IUnknown *iface, QObject *parent = 0);
+    QAxObject(QObject *parent = Q_NULLPTR);
+    QAxObject(const QString &c, QObject *parent = Q_NULLPTR);
+    QAxObject(IUnknown *iface, QObject *parent = Q_NULLPTR);
     ~QAxObject();
 
     bool doVerb(const QString &verb);
@@ -70,13 +70,13 @@ private:
 
 template <> inline QAxObject *qobject_cast<QAxObject*>(const QObject *o)
 {
-    void *result = o ? const_cast<QObject *>(o)->qt_metacast("QAxObject") : 0;
+    void *result = o ? const_cast<QObject *>(o)->qt_metacast("QAxObject") : Q_NULLPTR;
     return (QAxObject*)(result);
 }
 
 template <> inline QAxObject *qobject_cast<QAxObject*>(QObject *o)
 {
-    void *result = o ? o->qt_metacast("QAxObject") : 0;
+    void *result = o ? o->qt_metacast("QAxObject") : Q_NULLPTR;
     return (QAxObject*)(result);
 }