1 files changed, 9 insertions, 9 deletions

diff --git a/src/widgets/itemviews/qtreeview.cpp b/src/widgets/itemviews/qtreeview.cpp
index 442369c2ec..9aba17be70 100644
--- a/src/widgets/itemviews/qtreeview.cpp
+++ b/src/widgets/itemviews/qtreeview.cpp
@@ -1517,7 +1517,7 @@ void QTreeView::drawTree(QPainter *painter, const QRegion &region) const
 /// ### move to QObject :)
 static inline bool ancestorOf(QObject *widget, QObject *other)
 {
-    for (QObject *parent = other; parent != 0; parent = parent->parent()) {
+    for (QObject *parent = other; parent != nullptr; parent = parent->parent()) {
         if (parent == widget)
             return true;
     }
@@ -1888,7 +1888,7 @@ void QTreeView::mousePressEvent(QMouseEvent *event)
 {
     Q_D(QTreeView);
     bool handled = false;
-    if (style()->styleHint(QStyle::SH_ListViewExpand_SelectMouseType, 0, this) == QEvent::MouseButtonPress)
+    if (style()->styleHint(QStyle::SH_ListViewExpand_SelectMouseType, nullptr, this) == QEvent::MouseButtonPress)
         handled = d->expandOrCollapseItemAtPos(event->pos());
     if (!handled && d->itemDecorationAt(event->pos()) == -1)
         QAbstractItemView::mousePressEvent(event);
@@ -1907,7 +1907,7 @@ void QTreeView::mouseReleaseEvent(QMouseEvent *event)
     } else {
         if (state() == QAbstractItemView::DragSelectingState || state() == QAbstractItemView::DraggingState)
             setState(QAbstractItemView::NoState);
-        if (style()->styleHint(QStyle::SH_ListViewExpand_SelectMouseType, 0, this) == QEvent::MouseButtonRelease)
+        if (style()->styleHint(QStyle::SH_ListViewExpand_SelectMouseType, nullptr, this) == QEvent::MouseButtonRelease)
             d->expandOrCollapseItemAtPos(event->pos());
     }
 }
@@ -1944,7 +1944,7 @@ void QTreeView::mouseDoubleClickEvent(QMouseEvent *event)
         if (edit(persistent, DoubleClicked, event) || state() != NoState)
             return; // the double click triggered editing
 
-        if (!style()->styleHint(QStyle::SH_ItemView_ActivateItemOnSingleClick, 0, this))
+        if (!style()->styleHint(QStyle::SH_ItemView_ActivateItemOnSingleClick, nullptr, this))
             emit activated(persistent);
 
         d->pressedIndex = QModelIndex();
@@ -2208,7 +2208,7 @@ QModelIndex QTreeView::moveCursor(CursorAction cursorAction, Qt::KeyboardModifie
             d->collapse(vi, true);
             d->moveCursorUpdatedView = true;
         } else {
-            bool descend = style()->styleHint(QStyle::SH_ItemView_ArrowKeysNavigateIntoChildren, 0, this);
+            bool descend = style()->styleHint(QStyle::SH_ItemView_ArrowKeysNavigateIntoChildren, nullptr, this);
             if (descend) {
                 QModelIndex par = current.parent();
                 if (par.isValid() && par != rootIndex())
@@ -2244,7 +2244,7 @@ QModelIndex QTreeView::moveCursor(CursorAction cursorAction, Qt::KeyboardModifie
             d->expand(vi, true);
             d->moveCursorUpdatedView = true;
         } else {
-            bool descend = style()->styleHint(QStyle::SH_ItemView_ArrowKeysNavigateIntoChildren, 0, this);
+            bool descend = style()->styleHint(QStyle::SH_ItemView_ArrowKeysNavigateIntoChildren, nullptr, this);
             if (descend) {
                 QModelIndex idx = d->modelIndex(d->below(vi));
                 if (idx.parent() == current)
@@ -3051,7 +3051,7 @@ void QTreeViewPrivate::initialize()
     header->setDefaultAlignment(Qt::AlignLeft|Qt::AlignVCenter);
     q->setHeader(header);
 #if QT_CONFIG(animation)
-    animationsEnabled = q->style()->styleHint(QStyle::SH_Widget_Animation_Duration, 0, q) > 0;
+    animationsEnabled = q->style()->styleHint(QStyle::SH_Widget_Animation_Duration, nullptr, q) > 0;
     QObject::connect(&animatedOperation, SIGNAL(finished()), q, SLOT(_q_endAnimatedOperation()));
 #endif // animation
 }
@@ -3344,7 +3344,7 @@ void QTreeViewPrivate::layout(int i, bool recursiveExpanding, bool afterIsUninit
     int hidden = 0;
     int last = 0;
     int children = 0;
-    QTreeViewItem *item = 0;
+    QTreeViewItem *item = nullptr;
     for (int j = first; j < first + count; ++j) {
         current = model->index(j - first, 0, parent);
         if (isRowHidden(current)) {
@@ -3955,7 +3955,7 @@ int QTreeViewPrivate::accessibleTree2Index(const QModelIndex &index) const
 void QTreeViewPrivate::updateIndentationFromStyle()
 {
     Q_Q(const QTreeView);
-    indent = q->style()->pixelMetric(QStyle::PM_TreeViewIndentation, 0, q);
+    indent = q->style()->pixelMetric(QStyle::PM_TreeViewIndentation, nullptr, q);
 }
 
 /*!