- o -
- opacity() : KWinInternal::Client
- opacityPercentage() : KWinInternal::Client
- operationMaxButtonClick() : KDecorationOptions
- operationTitlebarDblClick() : KWinInternal::Options
- operator==() : KWinInternal::SystemTrayWindow
- options() : KDecorationFactory, KDecoration
- Options() : KWinInternal::Options