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: I2285bc99e10d123f15fb3b0aa08bd6de46ce652d
Task-number: QTBUG-45291
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@theqtcompany.com>

7 files changed, 7 insertions, 7 deletions

diff --git a/src/winextras/qwinfunctions.h b/src/winextras/qwinfunctions.h
index 197ac33..d5c2bde 100644
--- a/src/winextras/qwinfunctions.h
+++ b/src/winextras/qwinfunctions.h
@@ -83,7 +83,7 @@ namespace QtWin
     Q_WINEXTRAS_EXPORT QString stringFromHresult(HRESULT hresult);
     Q_WINEXTRAS_EXPORT QString errorStringFromHresult(HRESULT hresult);
 
-    Q_WINEXTRAS_EXPORT QColor colorizationColor(bool *opaqueBlend = 0);
+    Q_WINEXTRAS_EXPORT QColor colorizationColor(bool *opaqueBlend = Q_NULLPTR);
     Q_WINEXTRAS_EXPORT QColor realColorizationColor();
 
     Q_WINEXTRAS_EXPORT void setWindowExcludedFromPeek(QWindow *window, bool exclude);
diff --git a/src/winextras/qwinjumplist.h b/src/winextras/qwinjumplist.h
index 732742c..8b33d46 100644
--- a/src/winextras/qwinjumplist.h
+++ b/src/winextras/qwinjumplist.h
@@ -52,7 +52,7 @@ class Q_WINEXTRAS_EXPORT QWinJumpList : public QObject
     Q_PROPERTY(QString identifier READ identifier WRITE setIdentifier)
 
 public:
-    explicit QWinJumpList(QObject *parent = 0);
+    explicit QWinJumpList(QObject *parent = Q_NULLPTR);
     ~QWinJumpList();
 
     QString identifier() const;
diff --git a/src/winextras/qwintaskbarbutton.h b/src/winextras/qwintaskbarbutton.h
index a844870..1979f68 100644
--- a/src/winextras/qwintaskbarbutton.h
+++ b/src/winextras/qwintaskbarbutton.h
@@ -53,7 +53,7 @@ class Q_WINEXTRAS_EXPORT QWinTaskbarButton : public QObject
     Q_PROPERTY(QWindow *window READ window WRITE setWindow)
 
 public:
-    explicit QWinTaskbarButton(QObject *parent = 0);
+    explicit QWinTaskbarButton(QObject *parent = Q_NULLPTR);
     ~QWinTaskbarButton();
 
     void setWindow(QWindow *window);
diff --git a/src/winextras/qwintaskbarprogress.h b/src/winextras/qwintaskbarprogress.h
index ce4883e..6195731 100644
--- a/src/winextras/qwintaskbarprogress.h
+++ b/src/winextras/qwintaskbarprogress.h
@@ -53,7 +53,7 @@ class Q_WINEXTRAS_EXPORT QWinTaskbarProgress : public QObject
     Q_PROPERTY(bool stopped READ isStopped NOTIFY stoppedChanged)
 
 public:
-    explicit QWinTaskbarProgress(QObject *parent = 0);
+    explicit QWinTaskbarProgress(QObject *parent = Q_NULLPTR);
     ~QWinTaskbarProgress();
 
     int value() const;
diff --git a/src/winextras/qwinthumbnailtoolbar.h b/src/winextras/qwinthumbnailtoolbar.h
index 124bb87..3dd6d9d 100644
--- a/src/winextras/qwinthumbnailtoolbar.h
+++ b/src/winextras/qwinthumbnailtoolbar.h
@@ -55,7 +55,7 @@ class Q_WINEXTRAS_EXPORT QWinThumbnailToolBar : public QObject
     Q_PROPERTY(QPixmap iconicLivePreviewPixmap READ iconicLivePreviewPixmap WRITE setIconicLivePreviewPixmap)
 
 public:
-    explicit QWinThumbnailToolBar(QObject *parent = 0);
+    explicit QWinThumbnailToolBar(QObject *parent = Q_NULLPTR);
     ~QWinThumbnailToolBar();
 
     void setWindow(QWindow *window);
diff --git a/src/winextras/qwinthumbnailtoolbutton.h b/src/winextras/qwinthumbnailtoolbutton.h
index f886f0e..97ac204 100644
--- a/src/winextras/qwinthumbnailtoolbutton.h
+++ b/src/winextras/qwinthumbnailtoolbutton.h
@@ -55,7 +55,7 @@ class Q_WINEXTRAS_EXPORT QWinThumbnailToolButton : public QObject
     Q_PROPERTY(bool flat READ isFlat WRITE setFlat)
 
 public:
-    explicit QWinThumbnailToolButton(QObject *parent = 0);
+    explicit QWinThumbnailToolButton(QObject *parent = Q_NULLPTR);
     ~QWinThumbnailToolButton();
 
     void setToolTip(const QString &toolTip);
diff --git a/src/winextras/qwinthumbnailtoolbutton_p.h b/src/winextras/qwinthumbnailtoolbutton_p.h
index 706b7ec..ce83002 100644
--- a/src/winextras/qwinthumbnailtoolbutton_p.h
+++ b/src/winextras/qwinthumbnailtoolbutton_p.h
@@ -55,7 +55,7 @@ class QWinThumbnailToolBar;
 class QWinThumbnailToolButtonPrivate
 {
 public:
-    QWinThumbnailToolButtonPrivate() : enabled(true), interactive(true), dismiss(false), visible(true), flat(false), toolbar(0) {}
+    QWinThumbnailToolButtonPrivate() : enabled(true), interactive(true), dismiss(false), visible(true), flat(false), toolbar(Q_NULLPTR) {}
     QString toolTip;
     QIcon icon;
     bool enabled;