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A comment on Qocker is a user-friendly Qt GUI application for managing Docker containers. Parent comment

Re:Qocker is a user-friendly Qt GUI application for managing... by anthk on Monday September 23, 2024 @06:51AM (#41624616)
OFC with qt5ct it's suggested to add the qgtk styles too. For instance, the GTK2/3 one to map your GTK2/3 (and 4) settings into the QT5 widgets.

BTW, to enforce Zukitre as the GTK4 theme with Elementary icons:

create /etc/profile.d/gtk.sh

       #!/bin/sh 
       export GTK_THEME=Zukitre
       export GTK_ICON_THEME=Elementary
And, yes, Zuki themes and the Elementary icon set must be installed too.
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Re:Qocker is a user-friendly Qt GUI application for managing... by jcelerier on Monday September 23, 2024 @07:40AM (#41624998)
Why qt5ct when qt6 (and qt6ct) were released years ago, in 2020 ?
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Re:Qocker is a user-friendly Qt GUI application for managing... by doubled112 on Monday September 23, 2024 @07:56AM (#41625130)
Same reason as usual. Not every application has been ported.
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Re:Qocker is a user-friendly Qt GUI application for managing... by Joel_Mckay on Monday September 23, 2024 @01:45PM (#41628637)
The theme overrides were not working, so the issue is likely in how the Qt5 template layer was built/integrated in the universe MATE build (Qt6ct seems unaffected, but will not help with code built on Qt5). i.e. the applications may not crash, but will look garbled and exhibit undefined GUI behaviors on legacy desktops. Overriding the themes and other documented workarounds will only suppress standard warnings, but have not had any impact on the core Qt5 issues.

For an LTS OS intended to be around for 12 years, I am not sure things have turned out well in user space and Qt5.

Hopefully, this saves someone a few hours of chasing this external issue in their own projects. =3

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Re:Qocker is a user-friendly Qt GUI application for managing... by anthk on Tuesday September 24, 2024 @03:00AM (#41633808)
Uhm, I use Mate under Trisquel 11 (bound to Ubuntu 22 releases, but libre), it's the default desktop DE and I have no issues with neither qt5ct nor GTK theme overriding, which is more apt for Gnome3/OSTree based desktops than normal setups.
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Re:Qocker is a user-friendly Qt GUI application for managing... by Joel_Mckay on Tuesday September 24, 2024 @04:04AM (#41634264)
This issue appeared in Canonical's Ubuntu 24.04.1 Noble Numbat MATE Desktop iso and universe repository meta packages ubuntu-mate-desktop and mate-desktop .

The meta package ubuntucinnamon-desktop does not seem to impact the Qt5 Apps/installation in a detrimental way.

If I could offer any advice about this mystery issue... probably wiser to defer upgrading for a bit =3

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