Platform theme to use for Qt applications. Some examples are gtk : Use Qt's GTK platform theme plugin gtk2 : Use GTK2 theme with qtstyleplugins and qt6gtk2 gtk3 : Use GTK3 integration for file picker dialogs, font and theme configuration adwaita : Use Adwaita theme with qadwaitadecorations gnome (deprecated) : Use GNOME theme with qgnomeplatform. Is no longer maintained so prefer adwaita. lxqt : Use LXQt theme style set using the lxqt-config-appearance application qtct : Use Qt style set using qt5ct and qt6ct applications kde : Use Qt settings from Plasma

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"adwaita"