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>

5 files changed, 10 insertions, 10 deletions

diff --git a/src/gui/image/qimageiohandler.cpp b/src/gui/image/qimageiohandler.cpp
index 9fe3b863b3..0e7b541cf2 100644
--- a/src/gui/image/qimageiohandler.cpp
+++ b/src/gui/image/qimageiohandler.cpp
@@ -340,7 +340,7 @@ void QImageIOHandler::setDevice(QIODevice *device)
 
 /*!
     Returns the device currently assigned to the QImageIOHandler. If
-    not device has been assigned, 0 is returned.
+    not device has been assigned, \nullptr is returned.
 */
 QIODevice *QImageIOHandler::device() const
 {
diff --git a/src/gui/image/qimagereader.cpp b/src/gui/image/qimagereader.cpp
index 3f1297c81a..61f20e0c65 100644
--- a/src/gui/image/qimagereader.cpp
+++ b/src/gui/image/qimagereader.cpp
@@ -756,13 +756,13 @@ void QImageReader::setDevice(QIODevice *device)
     d->device = device;
     d->deleteDevice = false;
     delete d->handler;
-    d->handler = 0;
+    d->handler = nullptr;
     d->text.clear();
 }
 
 /*!
-    Returns the device currently assigned to QImageReader, or 0 if no
-    device has been assigned.
+    Returns the device currently assigned to QImageReader, or \nullptr
+    if no device has been assigned.
 */
 QIODevice *QImageReader::device() const
 {
diff --git a/src/gui/image/qimagewriter.cpp b/src/gui/image/qimagewriter.cpp
index 41048fa681..ec66588ddf 100644
--- a/src/gui/image/qimagewriter.cpp
+++ b/src/gui/image/qimagewriter.cpp
@@ -407,8 +407,8 @@ void QImageWriter::setDevice(QIODevice *device)
 }
 
 /*!
-    Returns the device currently assigned to QImageWriter, or 0 if no
-    device has been assigned.
+    Returns the device currently assigned to QImageWriter, or \nullptr
+    if no device has been assigned.
 */
 QIODevice *QImageWriter::device() const
 {
diff --git a/src/gui/image/qmovie.cpp b/src/gui/image/qmovie.cpp
index 7d17b7d5ef..79203c7b98 100644
--- a/src/gui/image/qmovie.cpp
+++ b/src/gui/image/qmovie.cpp
@@ -659,7 +659,7 @@ void QMovie::setDevice(QIODevice *device)
 
 /*!
     Returns the device QMovie reads image data from. If no device has
-    currently been assigned, 0 is returned.
+    currently been assigned, \nullptr is returned.
 
     \sa setDevice(), fileName()
 */
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; }