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QT Applications (with qt6ct-kde) ​

QT is one of the most popular toolkits for creating Unix GUI applications. We can use qt6ct-kde to theme KDE applications like Dolphin.

INFO

qt6ct-kde is a patch for qt6ct for KDE Applications.

Install qt6ct-kde ​

You can install qt6ct-kde from AUR (Arch User Repository).

bash
yay -S qt6ct-kde

Add the following line to the configuration:

toml
[links]
"qtct.colors" = "~/.config/qt6ct/colors/rong.colors"

INFO

You need to generate colors for these configuration files to be created. Run:

bash
rong video path/to/image/or/video

Settings ​

Now, open qt6ct-kde by running qt6ct or using a launcher to search for "QT6 settings". Set Color scheme: to Rong (KColorScheme).

Environment Variable ​

Now, run any QT application with QT_QPA_PLATFORMTHEME=qt6ct. For example:

bash
QT_QPA_PLATFORMTHEME=qt6ct dolphin

For convenience, you can set QT_QPA_PLATFORMTHEME=qt6ct in your global Environment Variables. For Hyprland:

ini
env = QT_QPA_PLATFORMTHEME,qt6ct

Reload ​

The qt6ct settings auto-reload on generation, but you need to restart applications for them to apply the new theme.