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QLayout: Consume ChildRemoved event, when layout is disabled

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QLayout::widgetEvent() returned early, when the layout was disabled.
That suppressed ChildRemoved events and lead to a crash, when the
layout was enabled again.

Don't return early on ChildRemoved events.
Add an autotest in tst_layout::removeWidget().

Fixes: QTBUG-124151
Pick-to: 6.5 6.2
Change-Id: Ib0a0bb73978d9fc2c9777d300cf38a8c4496b702
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
Reviewed-by: Chris René Lerner <chris.lerner@qt.io>
(cherry picked from commit ef8e548cf1adf8032c030df04e69988f238c77fb)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>
This commit is contained in:
Axel Spoerl 2024-04-09 19:23:33 +02:00 committed by Qt Cherry-pick Bot
parent 8cb7b906a6
commit 8f27ca2346
2 changed files with 12 additions and 5 deletions
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5
src/widgets/kernel/qlayout.cpp
View File

@ -520,10 +520,11 @@ void QLayoutPrivate::doResize()
void QLayout::widgetEvent(QEvent *e)
{
Q_D(QLayout);
if (!d->enabled)
const QEvent::Type type = e->type();
if (!d->enabled && type != QEvent::ChildRemoved)
return;
switch (e->type()) {
switch (type) {
case QEvent::Resize:
if (d->activated)
d->doResize();

12
tests/auto/widgets/kernel/qlayout/tst_qlayout.cpp
View File

@ -378,10 +378,10 @@ void tst_QLayout::removeWidget()
{
QHBoxLayout layout;
QCOMPARE(layout.count(), 0);
QWidget w;
layout.addWidget(&w);
std::unique_ptr<QWidget> w(new QWidget);
layout.addWidget(w.get());
QCOMPARE(layout.count(), 1);
layout.removeWidget(&w);
layout.removeWidget(w.get());
QCOMPARE(layout.count(), 0);
QPointer<QLayout> childLayout(new QHBoxLayout);
@ -395,6 +395,12 @@ void tst_QLayout::removeWidget()
QCOMPARE(layout.count(), 0);
QVERIFY(!childLayout.isNull());
// Test inactive layout consumes ChildRemoved event (QTBUG-124151)
layout.addWidget(w.get());
layout.setEnabled(false);
w.reset();
layout.setEnabled(true);
}
QTEST_MAIN(tst_QLayout)