[PyQt] PYQt defaults to fonts looking bold on macOS but C++ Qt does not

[Phil Thompson]

On 6 Jul 2016, at 12:48 pm, Barry Scott <barry at barrys-emacs.org> wrote:
> 
>> 
>> On 6 Jul 2016, at 12:16, Florian Bruhin <me at the-compiler.org> wrote:
>> 
>> * Barry Scott <barry at barrys-emacs.org> [2016-07-06 12:08:02 +0100]:
>>> 
>>>> On 6 Jul 2016, at 12:04, Phil Thompson <phil at riverbankcomputing.com> wrote:
>>>> 
>>>> On 6 Jul 2016, at 11:55 am, Barry Scott <barry at barrys-emacs.org> wrote:
>>>>> 
>>>>>> 
>>>>>> On 6 Jul 2016, at 11:50, Phil Thompson <phil at riverbankcomputing.com> wrote:
>>>>>> 
>>>>>> On 6 Jul 2016, at 11:26 am, Barry Scott <barry at barrys-emacs.org> wrote:
>>>>>>> 
>>>>>>> Compare the windows snapshots taken for a PyQt5 app and a C++ Qt5 app
>>>>>>> that use a QLabel control.
>>>>>>> 
>>>>>>> http://www.barrys-emacs.org/export/Qt5.png
>>>>>>> 
>>>>>>> http://www.barrys-emacs.org/export/PyQt5.png
>>>>>>> 
>>>>>>> You can see that the text in PyQt5 looks like it is bold compared to the
>>>>>>> Qt5 version.
>>>>>>> 
>>>>>>> On Fedora I see that same text for Qt5 and PyQT5.
>>>>>>> 
>>>>>>> Please fix this problem in PyQt5.
>>>>>>> 
>>>>>>> The source code I used is in:
>>>>>>> 
>>>>>>> http://barrys-emacs.org/export/font-example.tar.gz
>>>>>>> 
>>>>>>> Note: This bug affects all text, list, tables, line edit everything.
>>>>>> 
>>>>>> ...on your system. It works fine for me. PyQt does nothing with fonts.
>>>>> 
>>>>> Oh. I have not knowingly done anything that would cause this.
>>>>> 
>>>>> If I wanted to globally change the font used by PyQt5 how would I do it?
>>>>> Is there a config file that PyQt5 will read that Qt will not?
>>>> 
>>>> No.
>>> 
>>> I guess I’m about to learn how dtrace works to find the difference.
>> 
>> Are you sure you're using the exact same Qt version via PyQt?
> 
> Qt.PYQT_VERSION_STR 5.6
> QtCore.QT_VERSION_STR 5.6.1

That gives you the version of Qt it was compiled against, not the version of Qt it is running with. Use QtCore.qVersion().

Phil