[Hyprland] QT theme not applying to all apps

Desktop Environments All WMs
1

I switched to Hyprland from KDE some time ago but i faced an issue the QT theme i specified only applys to some apps and not all of them, I set these enviroment variables:

env = QT_QPA_PLATFORM,wayland
env = QT_QPA_PLATFORMTHEME,qt5ct
env = QT_WAYLAND_DISABLE_WINDOWDECORATION,1
env = QT_AUTO_SCREEN_SCALE_FACTOR,1
env = QT_STYLE_OVERRIDE,kvantum

Here is an example of this problem:

swappy-20240626-172406
swappy-20240626-1724061918×1049 56 KB

And here is what a qt app should look like:
swappy-20240626-172521
swappy-20240626-1725211919×1047 193 KB

The latter (QBittorrent) applys the theme as intended but the first app (protonup-qt) doesnt.

Thanks!

2

Protonup used Qt6. That’s why it’s not working.

image
image847×575 53.3 KB

You will need to install a Qt6-compatible theme and theme manager, like qt6ct and/or kvantum.

It is strange that it doesn’t work though, since qBittorrent also uses Qt6. Is your installation of Protonup a flatpak or from the AUR? If it’s the flatpak version, try the one from the AUR or build it from source instead. The AppImage should also work just fine.

3

I am using the AUR package for protonup-qt

Also the above variables contain a qt style override to make it all kvantum

Thanks!

4

Yes, but it is pointing to qt5ct instead of qt6ct. Try changing that, then log out and log back in to see if it makes a difference. Assuming you have qt6ct installed.

Like I said, protonup should be themed correctly already because qBittorrent uses Qt6, but seeing as it’s not themed correctly, I’d give it a shot.

5

Tried it no effect also qt6ct said the qt style override was interfering so i tried commenting the line and still no effect

6

also QT6CT is supposed to work too when the env var is set to qt5ct

7

Again, I know it’s supposed to work. Was trying to see if there is something weird going on.