[PySide] QAbstractTableModel headerData() Qt.BackgroundRole - Ignored?

[Ed Lipson]

It worked, colored both Horizontal and Vertical headers.

I would have made the assumption that the section keyword would refer to a
column/row of the header. Clearly it refers to the whole header. Where
would I find documentation regarding this? If I wanted just the Horizontal
header to be colored, for example. I did not see anything in the
QHeaderView or QAbstractItemView documentation for just the section keyword.

Is there any doc on the syntactic sugar of passing in what appears (to me)
to be a C++ string?

Thanks,
Ed


On Sun, Apr 11, 2021 at 6:03 PM Cristián Maureira-Fredes <
Cristian.Maureira-Fredes at qt.io> wrote:

> Hello,
>
> Nothing to worry about C++,
> if you have a QTableView object, you can just use:
>
> .setStyleSheet("QHeaderView::section{background-color: green;}")
>
> on the object.
>
> For example,
> modifying the example:
>
>
> https://code.qt.io/cgit/pyside/pyside-setup.git/tree/examples/widgets/itemviews/addressbook
>
> Precisely the "addreswidget.py" file, adding the same line
> under the declaration "tableView = QTableView()"
>
> Produces:
>
> https://imgur.com/a/iWo5rdM
>
>
> Cheers
>
>
> PS: There is a small tutorial regarding stylesheet on the docs:
> https://doc.qt.io/qtforpython/tutorials/basictutorial/widgetstyling.html
>
> On 4/9/21 10:23 PM, Ed Lipson wrote:
> > I tried
> > - self.my_tableView.horizontalHeader().setStyleSheet("background-color:
> > gray"), no effect. I get a little lost with the c++ to python
> > translations. I tried ("{background-color: gray;}") too and that did not
> > work either.
> >
> > I saw a post about using a QPalette, but I'm not sure how that would
> > help or be applied.
> >
> > Thanks,
> > Ed
> >
> >
> > On Fri, Apr 9, 2021 at 3:43 PM Ed Lipson <edlipsongm at gmail.com
> > <mailto:edlipsongm at gmail.com>> wrote:
> >
> >     Then why would there be a background role call to the headerData
> >     method? I'll give the stylesheet a try. Maybe I can understand it.
> >
> >     Thanks,
> >     Ed
> >
> >
> >     On Fri, Apr 9, 2021 at 8:04 AM Hans Jörg Maurer <hjm at pmeonline.net
> >     <mailto:hjm at pmeonline.net>> wrote:
> >
> >         I think you have to use
> >
> >         .setStyleSheet(QHeaderView:section{background - color: green})
> >         Take a look at https://doc.qt.io/archives/qt-5.9/stylesheet.html
> >         <https://doc.qt.io/archives/qt-5.9/stylesheet.html>
> >
> >         Regards
> >         Hans
> >
> >
> >
> >         Am Freitag, den 09.04.2021 um 13:29 schrieb Ed Lipson:
> >
> >             How would one set the background color of the QTableView
> >             (QtHorizontal orientation) header? I have tried the 'mail
> >             title' action, where I see the role being used. I just don't
> >             get the color.
> >
> >             I used the same concept in data() and the cells take on the
> >             background color as appropriate for the state.
> >
> >             PySide2 5.15.2 Python3.9.1
> >
> >             Thanks,
> >             Ed
> >
> >             PS: Where is it appropriate to ask such questions? JIRA does
> >             not have a question type defined and doing it there may be
> >             too much noise in the bug tracking system.
> >
> >
> > _______________________________________________
> > PySide mailing list
> > PySide at qt-project.org
> > https://lists.qt-project.org/listinfo/pyside
> >
>
> --
> Dr. Cristián Maureira-Fredes
> R&D Manager
>
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