QtGui: 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: Ieffbfffa76e3018257b667a3e8ad6e3b88486cde
Reviewed-by: Paul Wicking <paul.wicking@qt.io>

1 files changed, 3 insertions, 3 deletions

diff --git a/src/gui/image/qpicture.cpp b/src/gui/image/qpicture.cpp
index 51a9575fd0..6e57f679d8 100644
--- a/src/gui/image/qpicture.cpp
+++ b/src/gui/image/qpicture.cpp
@@ -1200,8 +1200,8 @@ QT_END_INCLUDE_NAMESPACE
     \obsolete
 
     Returns a string that specifies the picture format of the file \a
-    fileName, or 0 if the file cannot be read or if the format is not
-    recognized.
+    fileName, or \nullptr if the file cannot be read or if the format
+    is not recognized.
 
     \sa load(), save()
 */
@@ -1543,7 +1543,7 @@ const QPicture &QPictureIO::picture() const { return d->pi; }
 int QPictureIO::status() const { return d->iostat; }
 
 /*!
-    Returns the picture format string or 0 if no format has been
+    Returns the picture format string or \nullptr if no format has been
     explicitly set.
 */
 const char *QPictureIO::format() const { return d->frmt; }