Problem with reimplementation of event() in QTableView subclass
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I am developing a cross-platform application which should also work on tablets. There is a couple of context menus (created using Qt::ActionsContextMenu policy) and I want them to appear on tablets by tap and hold gesture.
In one case the menu belongs to a custom widget subclassed from QWidget. I have reimplemented the event handler in the following way:
@bool MyWidget::event(QEvent event)
{
if (event->type() == QEvent::Gesture)
{
QGestureEvent gEvent = static_cast<QGestureEvent*>(event);
if (gEvent->gesture(Qt::TapAndHoldGesture) != NULL)
{
QTapAndHoldGesture gesture =
static_cast<QTapAndHoldGesture>(
gEvent->gesture(Qt::TapAndHoldGesture));
if (gesture->state() == Qt::GestureFinished)
{
QContextMenuEvent menuEvent(QContextMenuEvent::Other,
mapFromGlobal(gesture->position().toPoint()),
gesture->position().toPoint());
QApplication::sendEvent(this, &menuEvent);
}
gEvent->accept();
}
return true;
}
else return QWidget::event(event);
}@It works as expected, no problems.
Another menu belongs to QTableView. I have subclassed it and reimplemented the event handler in the same way, except for the last line:
@return QTableView::event(event);@
I does not work at all, the menu is never shown, despite the fact that the QContextMenuEvent event is sent. If I change QTableView::event(event) call to QWidget::event(event), the menu is shown, but, obviously, some parts of the table are not rendered, because some paint events are not processed. Any ideas?
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After some experiments I have found that changing the last line to these two does the job:
@else if (event->type() != QEvent::ContextMenu)
return QTableView::event(event);
else
return QWidget::event(event);@Still, I do not understand why QTableView does not process ContextMenu events.
