re-enable opaque widget optimization following Trolltech developer advice (in order...

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@15906 a592a061-630c-0410-9148-cb99ea01b6c8

diff --git a/src/frontends/qt4/GuiWorkArea.C b/src/frontends/qt4/GuiWorkArea.C
index fcd51f37148a4471ba95e936abd32ceaa47590de..b1c8d29f8fd9b80ffa08b03b69a7beaaecdb29a4 100644 (file)
--- a/src/frontends/qt4/GuiWorkArea.C
+++ b/src/frontends/qt4/GuiWorkArea.C
@@ -170,8 +170,8 @@ GuiWorkArea::GuiWorkArea(int w, int h, int id, LyXView & lyx_view)
        setAcceptDrops(true);
        setMinimumSize(100, 70);
 
-       //viewport()->setAutoFillBackground(false);
-       //viewport()->setAttribute(Qt::WA_OpaquePaintEvent);
+       viewport()->setAutoFillBackground(false);
+       viewport()->setAttribute(Qt::WA_OpaquePaintEvent);
        setFocusPolicy(Qt::WheelFocus);
 
        viewport()->setCursor(Qt::IBeamCursor);