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authorAlexander Volkov <a.volkov@rusbitech.ru>2016-11-08 15:54:43 +0300
committerAlexander Volkov <a.volkov@rusbitech.ru>2016-11-12 10:40:42 +0000
commit1c080465659af269775908bb249159152d563b89 (patch)
tree51e929429cfa0f3ee755a2c99ee0eb5bd5b954da
parent2265fbe7c12cbb1f98fad8b4bb878d571427000c (diff)
doc: Remove obsolete note for QWidget::paintEvent()
qt_x11_set_global_double_buffer() is dead code since Qt 5. Change-Id: Ie9a33b6f03dc2e39f12bc790292bb0d227f05c44 Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
-rw-r--r--src/widgets/doc/snippets/code/src_gui_kernel_qwidget.cpp8
-rw-r--r--src/widgets/kernel/qwidget.cpp5
2 files changed, 0 insertions, 13 deletions
diff --git a/src/widgets/doc/snippets/code/src_gui_kernel_qwidget.cpp b/src/widgets/doc/snippets/code/src_gui_kernel_qwidget.cpp
index 53cd907c74..b26f791d37 100644
--- a/src/widgets/doc/snippets/code/src_gui_kernel_qwidget.cpp
+++ b/src/widgets/doc/snippets/code/src_gui_kernel_qwidget.cpp
@@ -127,11 +127,3 @@ setUpdatesEnabled(false);
bigVisualChanges();
setUpdatesEnabled(true);
//! [13]
-
-
-//! [14]
-...
-extern void qt_x11_set_global_double_buffer(bool);
-qt_x11_set_global_double_buffer(false);
-...
-//! [14]
diff --git a/src/widgets/kernel/qwidget.cpp b/src/widgets/kernel/qwidget.cpp
index b2db4e1529..53b39e0394 100644
--- a/src/widgets/kernel/qwidget.cpp
+++ b/src/widgets/kernel/qwidget.cpp
@@ -9597,11 +9597,6 @@ void QWidget::leaveEvent(QEvent *)
Since Qt 4.0, QWidget automatically double-buffers its painting, so there
is no need to write double-buffering code in paintEvent() to avoid flicker.
- \b{Note for the X11 platform}: It is possible to toggle global double
- buffering by calling \c qt_x11_set_global_double_buffer(). For example,
-
- \snippet code/src_gui_kernel_qwidget.cpp 14
-
\note Generally, you should refrain from calling update() or repaint()
\b{inside} a paintEvent(). For example, calling update() or repaint() on
children inside a paintevent() results in undefined behavior; the child may