- u -
- use_class : KWinInternal::DetectWidgetBase
- use_role : KWinInternal::DetectWidgetBase
- use_whole_class : KWinInternal::DetectWidgetBase
- userNoBorder : KWinInternal::SessionInfo
- useShadowedText : Keramik::KeramikHandler, KeramikConfigUI
- useTitleMenuSlider : KWinInternal::Options
- useTranslucency : KWinInternal::Options