[Qt-interest] QGraphicsWidget hover events

[Colin Kern]

That was exactly the problem.  I had reimplemented mouseMoveEvent in
my QGraphicsView subclass and wasn't passing the event to
QGraphicsView::mouseMoveEvent after I was done handling it.  Thank
you!

Thanks,
Colin

On Fri, Jun 12, 2009 at 2:31 AM, Oliver
Demetz<forenbeitraege at oliverdemetz.de> wrote:
> Ok, that's a good argument :-)
>
> Then my next idea is to make sure that all other items in your scene do not
> make mistakes at handling mouse-events.
> If you reimplement eg. a mouseMoveEvent and not call the parents event
> handler, the event is catched and dies.
> (eg. if you specify your item as movable and some other item does not call
> QGraphicsItem::mouseMoveEvent(event), it might happen that your item is not
> movable.)
> Perhaps that's the same problem in your case, just with hoverEvents.
>
> Regards,
> Oliver
>
>
> Colin Kern schrieb:
>>
>> Because I have exit(0) in my hover events to test that they get called.
>>
>> Colin
>>
>> On Friday, June 12, 2009, Oliver Demetz <forenbeitraege at oliverdemetz.de>
>> wrote:
>>>
>>> How do you know that the event is never executed?
>>> Hint:
>>> If you just change the visual appearance of your item, be aware that a
>>> hover-enter or -leave events to not trigger a repaint! I had to call
>>> this->update() in order to "see" the hover effect!
>>> Regards,
>>> Oliver
>>>
>>> Colin Kern schrieb:
>>>
>>> Hi,
>>>
>>> I'm trying to implement the hoverEnterEvent for a QGraphicsWidget, and
>>> I can't get it to work.  I call setAcceptHoverEvents(true) in the
>>> constructor, but the hoverEnterEvent still is never called.  Looking
>>> at event() in qgraphicswidget.cpp, it looks to me like if window
>>> decorations aren't set, then the hover events are just ignored.  Also,
>>> the hoverLeaveEvent and hoverMoveEvent are reimplemented in
>>> qgraphicswidget.cpp, but not hoverEnterEvent.  I have tried
>>> implementing hoverLeaveEvent and hoverMoveEvent to see if those events
>>> are ever triggered, and they don't seem to be either.  How can I get
>>> hover events working in a QGraphicsWidget?
>>>
>>> Thanks,
>>> Colin
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>>>
>
>