### - u -

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