Qt-interest Archive, June 2007
Capturing right-clicks in QTableWidget
Message 1 in thread
Hi -
I have an application using a QTableWidget, and I
would like to be able to respond to right-click events
on cells in the table (but not with a context menu).
Ideally, I would like to get the QTableWidget to emit
a signal with the row and column of the cell that was
clicked on. Any help would be much appreciated.
Thanks.
Bryan
--
[ signature omitted ]
Message 2 in thread
Bryan Thibodeau schrieb:
> I have an application using a QTableWidget, and I
> would like to be able to respond to right-click events
> on cells in the table (but not with a context menu).
> Ideally, I would like to get the QTableWidget to emit
> a signal with the row and column of the cell that was
> clicked on. Any help would be much appreciated.
As QTableWidget doesn't provide a cellRightClicked() signal, you should
reimplement mousePressEvent() (or mouseReleaseEvent() if that fits you
better) to do so, then you can hook up your actions there.
Martin
--
[ signature omitted ]
Message 3 in thread
There are a couple possible techniques you can use that come to mind:
1. Use an event filter in the parent class that holds the
QTableWidget. This could capture the mouse right click events and
the co-ordinates. From there you can query the widget and find
out which cell is involved (using QTableView::rowAt &
QTableView::columntAt, for example)
2. Derive from QTableWidget, your own widget which emits the signal.
Your derivation must extend ::mousePressEvent to use the technique
in (1) to emit the signal with the cell.
HTH,
Susan
Bryan Thibodeau wrote:
> Hi -
>
> I have an application using a QTableWidget, and I
> would like to be able to respond to right-click events
> on cells in the table (but not with a context menu).
> Ideally, I would like to get the QTableWidget to emit
> a signal with the row and column of the cell that was
> clicked on. Any help would be much appreciated.
>
> Thanks.
> Bryan
>
> --
> To unsubscribe - send a mail to qt-interest-request@xxxxxxxxxxxxx with "unsubscribe" in the subject or the body.
> List archive and information: http://lists.trolltech.com/qt-interest/
>
>
>
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Message 4 in thread
Hmm those seem going about the hard way. Just set
setContextMenuPolicy(Qt::CustomContextMenu);
and then connect to
customContextMenuRequested(QPoint)
That is what I usually do when I want a right click menu on a
qabstractitemview. You can use the view.indexAt(point) to determine the
index that is being right clicked on.
-Benjamin Meyer
On Tuesday 19 June 2007 15:47:12 Susan Macchia wrote:
> There are a couple possible techniques you can use that come to mind:
>
> 1. Use an event filter in the parent class that holds the
> QTableWidget. This could capture the mouse right click events and
> the co-ordinates. From there you can query the widget and find
> out which cell is involved (using QTableView::rowAt &
> QTableView::columntAt, for example)
> 2. Derive from QTableWidget, your own widget which emits the signal.
> Your derivation must extend ::mousePressEvent to use the technique
> in (1) to emit the signal with the cell.
>
> HTH,
> Susan
>
> Bryan Thibodeau wrote:
> > Hi -
> >
> > I have an application using a QTableWidget, and I
> > would like to be able to respond to right-click events
> > on cells in the table (but not with a context menu).
> > Ideally, I would like to get the QTableWidget to emit
> > a signal with the row and column of the cell that was
> > clicked on. Any help would be much appreciated.
> >
> > Thanks.
> > Bryan
> >
> > --
> > To unsubscribe - send a mail to qt-interest-request@xxxxxxxxxxxxx with
> > "unsubscribe" in the subject or the body. List archive and information:
> > http://lists.trolltech.com/qt-interest/
>
> ---
>
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Message 5 in thread
Benjamin Meyer schrieb:
> Hmm those seem going about the hard way. Just set
>
> setContextMenuPolicy(Qt::CustomContextMenu);
>
> and then connect to
> customContextMenuRequested(QPoint)
That's a nice trick; I'll have to remember that :-)
However, I never thought of reimplementing a Qt class to apply my own
tweaks as "the hard way"; thanks to the clean OO approach and the well
thought-out class design it just came as natural as breathing :-)) A
disadvantage is that it clutters your project with Q*Ext(ended) classes,
but the advantage is that (IMHO) it's more transparent in terms of
maintanance and documentation than any "casual" hack...
Just to give my 5 cents here for today. I don't inted to start a
flamewar about The One Implementation Style here.
Martin
P. S. Just started getting into Java these days. Somehow I miss the Qt
docs and the easy discoverability of the libraries...
--
[ signature omitted ]
Message 6 in thread
This is good for popping up menus, but if you want to do other things,
you have to go with one of the 2 options I describe.
Benjamin Meyer wrote:
> Hmm those seem going about the hard way. Just set
>
> setContextMenuPolicy(Qt::CustomContextMenu);
>
> and then connect to
> customContextMenuRequested(QPoint)
>
> That is what I usually do when I want a right click menu on a
> qabstractitemview. You can use the view.indexAt(point) to determine the
> index that is being right clicked on.
>
> -Benjamin Meyer
>
> On Tuesday 19 June 2007 15:47:12 Susan Macchia wrote:
>
>> There are a couple possible techniques you can use that come to mind:
>>
>> 1. Use an event filter in the parent class that holds the
>> QTableWidget. This could capture the mouse right click events and
>> the co-ordinates. From there you can query the widget and find
>> out which cell is involved (using QTableView::rowAt &
>> QTableView::columntAt, for example)
>> 2. Derive from QTableWidget, your own widget which emits the signal.
>> Your derivation must extend ::mousePressEvent to use the technique
>> in (1) to emit the signal with the cell.
>>
>> HTH,
>> Susan
>>
>> Bryan Thibodeau wrote:
>>
>>> Hi -
>>>
>>> I have an application using a QTableWidget, and I
>>> would like to be able to respond to right-click events
>>> on cells in the table (but not with a context menu).
>>> Ideally, I would like to get the QTableWidget to emit
>>> a signal with the row and column of the cell that was
>>> clicked on. Any help would be much appreciated.
>>>
>>> Thanks.
>>> Bryan
>>>
>>> --
>>> To unsubscribe - send a mail to qt-interest-request@xxxxxxxxxxxxx with
>>> "unsubscribe" in the subject or the body. List archive and information:
>>> http://lists.trolltech.com/qt-interest/
>>>
>> ---
>>
>> This communication contains confidential information. If you are not the
>> intended recipient please return this email to the sender and delete it
>> from your records.
>>
>> Diese Nachricht enthält vertrauliche Informationen. Sollten Sie nicht der
>> beabsichtigte Empfänger dieser E-mail sein, senden Sie bitte diese an den
>> Absender zurück und löschen Sie die E-mail aus Ihrem System.
>>
>
>
> --
> To unsubscribe - send a mail to qt-interest-request@xxxxxxxxxxxxx with "unsubscribe" in the subject or the body.
> List archive and information: http://lists.trolltech.com/qt-interest/
>
>
>
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