### - u -

- UnfocusFocusedWidget() : Window
- UnshareOrders() : AIOrder
- UpdateListPosition() : NewGRFAddWindow
- UpdateOrderTimetable() : OrderList
- UpdatePosition() : ViewportSign , Scrollbar
- UpdateViewportCoordinates() : NWidgetViewport
- UpdateVirtCoord() : BaseStation , Station
- UpdateWidgetSize() : TownAuthorityWindow , TownDirectoryWindow , StationViewWindow , CompanyStationsWindow , OrdersWindow , NewsWindow , NewGRFWindow , NewGRFAddWindow , QueryWindow , QueryStringWindow , TooltipsWindow , ErrmsgWindow , IndustryDirectoryWindow , BuildIndustryWindow , SetDateWindow , CompanyWindow , SelectCompanyManagerFaceWindow , BuildTreesWindow , CompanyFinancesWindow , ReplaceVehicleWindow , AIDebugWindow , AIConfigWindow , AISettingsWindow , AIListWindow , VehicleDetailsWindow , SelectCompanyLiveryWindow , VehicleListWindow , Window , VehicleViewWindow , SelectStationWindow< T > , RefitWindow
- UsePaletteAnimation() : Blitter