diff options
| -rw-r--r-- | src/gui/widgets/qscrollbar.cpp | 2 | ||||
| -rw-r--r-- | tests/auto/qscrollbar/tst_qscrollbar.cpp | 19 |
2 files changed, 21 insertions, 0 deletions
diff --git a/src/gui/widgets/qscrollbar.cpp b/src/gui/widgets/qscrollbar.cpp index 02d584c29f..0157126a88 100644 --- a/src/gui/widgets/qscrollbar.cpp +++ b/src/gui/widgets/qscrollbar.cpp @@ -524,6 +524,8 @@ bool QScrollBar::event(QEvent *event) case QEvent::Wheel: { event->ignore(); // override wheel event without adding virtual function override + if (!isEnabled()) // don't scroll when disabled [QTBUG-27308] + return false; // normally prevented in QWidget::event() QWheelEvent *ev = static_cast<QWheelEvent *>(event); int delta = ev->delta(); // scrollbar is a special case - in vertical mode it reaches minimum diff --git a/tests/auto/qscrollbar/tst_qscrollbar.cpp b/tests/auto/qscrollbar/tst_qscrollbar.cpp index 54bb8d5326..d8bb79949e 100644 --- a/tests/auto/qscrollbar/tst_qscrollbar.cpp +++ b/tests/auto/qscrollbar/tst_qscrollbar.cpp @@ -57,6 +57,9 @@ public slots: private slots: void scrollSingleStep(); void task_209492(); +#ifndef QT_NO_WHEELEVENT + void QTBUG_27308(); +#endif private: QScrollBar *testWidget; @@ -151,5 +154,21 @@ void tst_QScrollBar::task_209492() QCOMPARE(spy.count(), 1); } +#ifndef QT_NO_WHEELEVENT +#define WHEEL_DELTA 120 // copied from tst_QAbstractSlider / tst_QComboBox +void tst_QScrollBar::QTBUG_27308() +{ + // https://bugreports.qt-project.org/browse/QTBUG-27308 + // Check that a disabled scrollbar doesn't react on wheel events anymore + + testWidget->setValue(testWidget->minimum()); + testWidget->setEnabled(false); + QWheelEvent event(testWidget->rect().center(), + -WHEEL_DELTA, Qt::NoButton, Qt::NoModifier, testWidget->orientation()); + qApp->sendEvent(testWidget, &event); + QCOMPARE(testWidget->value(), testWidget->minimum()); +} +#endif + QTEST_MAIN(tst_QScrollBar) #include "tst_qscrollbar.moc" |