More nullptr usage in headers

Diff generated by running clang-tidy's modernize-use-nullptr checker on
the CMake-based Qt version.

Skipping src/3rdparty, examples/, tests/

Change-Id: Ib182074e2e2fd52f63093f73b3e2e4c0cb7af188
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>

1 files changed, 4 insertions, 4 deletions

diff --git a/src/widgets/kernel/qapplication_p.h b/src/widgets/kernel/qapplication_p.h
index 133279f977..98eb9b73c6 100644
--- a/src/widgets/kernel/qapplication_p.h
+++ b/src/widgets/kernel/qapplication_p.h
@@ -128,10 +128,10 @@ public:
     void notifyWindowIconChanged() override;
 
     //modality
-    bool isWindowBlocked(QWindow *window, QWindow **blockingWindow = 0) const override;
+    bool isWindowBlocked(QWindow *window, QWindow **blockingWindow = nullptr) const override;
     static bool isBlockedByModal(QWidget *widget);
     static bool modalState();
-    static bool tryModalHelper(QWidget *widget, QWidget **rettop = 0);
+    static bool tryModalHelper(QWidget *widget, QWidget **rettop = nullptr);
 #if 0 // Used to be included in Qt4 for Q_WS_MAC
     static QWidget *tryModalHelper_sys(QWidget *top);
     bool canQuit();
@@ -157,7 +157,7 @@ public:
     void openPopup(QWidget *popup);
     static void setFocusWidget(QWidget *focus, Qt::FocusReason reason);
     static QWidget *focusNextPrevChild_helper(QWidget *toplevel, bool next,
-                                              bool *wrappingOccurred = 0);
+                                              bool *wrappingOccurred = nullptr);
 
 #if QT_CONFIG(graphicsview)
     // Maintain a list of all scenes to ensure font and palette propagation to
@@ -238,7 +238,7 @@ public:
             return window;
         if (const QWidget *nativeParent = widget->nativeParentWidget())
             return nativeParent->windowHandle();
-        return 0;
+        return nullptr;
     }
 
 #ifdef Q_OS_WIN