>From scanning the web, it seems that the unsupported font problem may  be 
related to Qt using DirectWrite.  With QT on its own, there may be a way to 
disable it.  With pyqt6, it is likely to be something that has been 
compiled in (though I'm not sure).  

Since my standard Consolas font doesn't work with the current PyQt6, the 
fallback is used, which may be Courier New - I'm not sure but I don't like 
it much, whatever it is.

On Sunday, May 9, 2021 at 10:00:03 AM UTC-4 [email protected] wrote:

> As to the bad characters being injected, I wrote a tiny pyqt6 app with 
> only a text edit widget, not even a main window.  It did not have the 
> anomalous behavior, and the key codes it returned were as expected.  That 
> makes it seem that Leo is doing something, not the Qt widgets.
>
> On Sunday, May 9, 2021 at 7:30:51 AM UTC-4 Edward K. Ream wrote:
>
>> On Sat, May 8, 2021 at 11:07 PM [email protected] <[email protected]> 
>> wrote:
>>
>>> I just installed PyQt6.02 on Windows.  Leo opens and runs, but remember 
>>> that weird behavior, where pressing the CNTL key deleted the selection and 
>>> inserted strange characters?  I'm still getting variations of that in all 
>>> panes, he exact details depend on which keys are pressed with CNTL.
>>>
>>> Leo 6.4-devel, ekr-qt branch, build aba21c2a12
>>>
>>> I got a series of font error messages:
>>>
>>
>> Thanks for this report. Clearly, not all is well with the Qt6 code. Otoh, 
>> the workaround will be to install Qt5, so I still plan to merge the ekr-qt 
>> branch into devel tomorrow.
>>
>> Edward
>>
>

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