I installed the Fedora 40 LXQt spin, and have upgraded to 41. I use Openbox by itself, and am trying to migrate to Wayland and Labwc. I use some Qt apps, and theming them in Fedora has not worked as it has in other distros over the last 2 years. I need a dark theme as bright themes hurt my eyes. Any help or pointers to info would be appreciated.
Since LXQt is a Qt based spin, there should perhaps be tools preinstalled / available on your system to achieve a dark look. There is this page below about theming options for LXQt, have you seen that already?
I start with LXQt, and run Openbox by itself, but theming is still hit and miss, even in LXQt, and it’s worse in Openbox alone or Labwc. I suspect there might be some applications that aren’t built on the same frameworks version, and there will be further challenges adjusting the Wayland ways of doing things.
For any who might be curious, I have solved this problem. The following facilitates not only working dark themes, but Kvantum as well.
Add the following lines to ~/.config/labwc/environment:
XDG_CURRENT_DESKTOP=wlroots
QT_QPA_PLATFORM=wayland
QT_QPA_PLATFORMTHEME=qt6ct
QT_WAYLAND_DISABLE_WINDOWDECORATION=1
QT_STYLE_OVERRIDE=kvantum