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Fix QApplicationPrivate::pickMouseReceiver() crash 

When a widget associate with a QWidgetWindow received a mouse event, but
another widget which is not a child of the widget has grabbed the mouse, the
application will crash. As QWidget::mapFrom() only works when mapping from
parent to child.

This is the side effect of SHA: f6c107d799

Task-number: QTBUG-25985
Change-Id: If2e6289e02d6d67c215694f2217221c9c7a0af46
Reviewed-by: Miikka Heikkinen <miikka.heikkinen@digia.com>
Reviewed-by: Laszlo Agocs <laszlo.p.agocs@nokia.com>
This commit is contained in:
Debao Zhang 2012-05-31 21:26:53 -07:00 committed by Qt by Nokia
parent 4f27960dd8
commit a86efb543d
1 changed files with 1 additions and 1 deletions
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2
src/widgets/kernel/qapplication.cpp
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@ -2447,7 +2447,7 @@ QWidget *QApplicationPrivate::pickMouseReceiver(QWidget *candidate, const QPoint
if (mouseGrabber && mouseGrabber != candidate) { if (mouseGrabber && mouseGrabber != candidate) {
receiver = mouseGrabber; receiver = mouseGrabber;
*pos = receiver->mapFrom(candidate, windowPos); *pos = receiver->mapFromGlobal(candidate->mapToGlobal(windowPos));
#ifdef ALIEN_DEBUG #ifdef ALIEN_DEBUG
qDebug() << " ** receiver adjusted to:" << receiver << "pos:" << pos; qDebug() << " ** receiver adjusted to:" << receiver << "pos:" << pos;
#endif #endif