Re: [Interest] Probable Qt bug in widgets display

[Bo Thorsen]

Den 20-04-2016 kl. 10:56 skrev Etienne Sandré-Chardonnal:

Here are two screenshots:

Normal display : http://www.eclat-digital.com/downloads/qtbug-normal.png
Bugged display : http://www.eclat-digital.com/downloads/qtbug-issue.png


This looks like a paint bug to me. The best way forward for you is to 
create a small self contained application that shows the problem. In 
this case, it should probably be possible to do it in 10 lines of code 
or so. And then add a description on how to reproduce it. Create a bug 
report with those two things.


The good thing about the small test case is that you also make it very 
clear if it really is a Qt bug or if you did something on your side that 
triggers it.


Bo Thorsen,
Director, Viking Software.

--
Viking Software
Qt and C++ developers for hire
http://www.vikingsoft.eu
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Re: [Interest] Probable Qt bug in widgets display

[Etienne Sandré-Chardonnal]

Here are two screenshots:

Normal display : http://www.eclat-digital.com/downloads/qtbug-normal.png
Bugged display : http://www.eclat-digital.com/downloads/qtbug-issue.png

It seems this also happens with windows RDP sessions.

Thanks,

Etienne

2016-04-19 14:20 GMT+02:00 Etienne Sandré-Chardonnal :

> Dear all,
>
> I have what seems to be a Qt bug in a desktop application. I'm using Qt
> 5.4.1 under windows, compiled with minGW.
>
> My application is based on a QMainWindow with toolboxes, status bar, and a
> tabbed central area. I use the Fusion style, redefined all the palette with
> QApplication::setPalette for having a dark theme, and customized a few
> widgets with stylesheets. All this customization is done once in main() on
> the QApplication instance.
>
> The interface is displayed as it should 99% of the time.
>
> But sometimes, I think when exiting from the screen saver, some GUI zones
> are rendered white instead of dark gray. These are:
>  - the empty spaces in QTabBar (central widget and stacked toolboxes)
>  - The status bar
>  - Bottom docked toolbox
>
> The status bar is not customized with QSS.
>
> As this had been observed only on my windows 7 development machine, I
> initially thought of a bug on my system related to messed up GPU drivers.
> But has also been reported by my customers now, under windows 10, on a
> clean system.
>
> Actual question : Is this already identified as a bug? I could not find a
> related entry in the bug tracker but this is not easy to find
>
> I will try getting a screenshot of the issue along with the equivalent
> "normal" display
>
> Thanks in advance,
>
> Etienne
>
>
>
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