Don't handle window events after Qt::WA_DontShowOnScreen is set

QWidget can set WA_DontShowOnScreen while visible, which generates
events when the QWidgetWindow is hidden. This causes
QWidgetWindow::handleExposeEvent() to clear the WA_Mapped flag which was
set by QWidgetPrivate::show_sys(). Once WA_Mapped is cleared, the
QWidget becomes non-functional, causing failures in at least
tst_QGraphicsProxyWidget::paintEvent(), since paint events are not sent
to widgets that don't have WA_Mapped set.

Change-Id: I2d3e5b3baffb07ab73f41520771866f181260bd2
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@nokia.com>
Reviewed-by: Sean Harmer <sean.harmer@kdab.com>
Reviewed-by: Samuel Rødal <samuel.rodal@nokia.com>

0 files changed, 0 insertions, 0 deletions