QtWidgets: replace 0 with \nullptr in documentation

Replace 0 with \nullptr in the documentation.
As a drive-by also replace some 0 with nullptr in the corresponding
code.

Change-Id: Id8056dc2364a372e40bc04e8cb9fcc443e49fb18
Reviewed-by: Paul Wicking <paul.wicking@qt.io>

1 files changed, 2 insertions, 2 deletions

diff --git a/src/widgets/graphicsview/qgraphicsproxywidget.cpp b/src/widgets/graphicsview/qgraphicsproxywidget.cpp
index 513cf9d361..e9f092020f 100644
--- a/src/widgets/graphicsview/qgraphicsproxywidget.cpp
+++ b/src/widgets/graphicsview/qgraphicsproxywidget.cpp
@@ -556,7 +556,7 @@ QGraphicsProxyWidget::~QGraphicsProxyWidget()
     exclusively either inside or outside of Graphics View. You cannot embed a
     widget as long as it is is visible elsewhere in the UI, at the same time.
 
-    \a widget must be a top-level widget whose parent is 0.
+    \a widget must be a top-level widget whose parent is \nullptr.
 
     When the widget is embedded, its state (e.g., visible, enabled, geometry,
     size hints) is copied into the proxy widget. If the embedded widget is
@@ -739,7 +739,7 @@ QWidget *QGraphicsProxyWidget::widget() const
     Returns the rectangle for \a widget, which must be a descendant of
     widget(), or widget() itself, in this proxy item's local coordinates.
 
-    If no widget is embedded, \a widget is 0, or \a widget is not a
+    If no widget is embedded, \a widget is \nullptr, or \a widget is not a
     descendant of the embedded widget, this function returns an empty QRectF.
 
     \sa widget()