rewrite keyPressEvent for QTableWidget give QKeyEvent key() == 16777217 any of arrow keys pressed.

Rewrite keyPressEvent for QTableWidget give QKeyEvent key() == 16777217 any of arrow keys pressed in case setCellWidget used.

QTableWidget::setCellWidget(QCheckBox*);

QTableWidget::keyPressEvent(QKeyEvent *ev)

{ in case Qt::Key_DOWN or Qt::Key_LEFT pressed ev->key() ... will ecuals to 16777217 not 16777237 }

Создав QTableWidget и вставив Widget с помощью setCellWidget, QTableWidget::keyPressEvent override QKeyEvent::key() равно 16777217 в случае если нажаты кнопки вниз или вправо.