Re: Dark styles bounded by unexpected white lines

John:

Also is there a test case that shows the problem, preferably on macOS? 


I haven't seen this in any code I have built but I mostly do Qt on Windows 
and may be using different versions. Just ran the Haven demo app with Qt 
6.4.3 with 150% and 125% scaling on Windows 10 and there is no apparent 
problem. Windows has multiple legacy modes that may be covering it up 
though.

Even Mitchell, the first poster here, hasn't reproduced the problem.

It's unlikely to occur on macOS since (at this level) macOS uses integer 
scaling: a logical pixel is either a single physical pixel or 2x2 physical 
pixels. It appears to me that the issue occurs due to fractional scaling 
like 125% and 150% where logical pixels share physical pixels with other 
logical pixels. macOS also has display fractional scaling but that is a 
lower level effect which occurs after the whole screen has been drawn.

Neil

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