Here is a list of all documented struct and union fields with links to the struct/union documentation for each field:

- i -

• i : GraphEdgeIterator , LanguagePackGlyphSearcher
• icon : CheatWindow , PerformanceLeagueWindow
• icon_size : ScriptLeagueWindow , TownAuthorityWindow
• icon_width : BuildBridgeWindow
• IConsoleLine() : IConsoleLine
• ICUVisualRun() : ICUParagraphLayout::ICUVisualRun
• id : AllowedSubtags , Button< T > , ChunkHandler , ContentInfo , NamePart , OptionData , TownNameStyle
• ident : GRFConfig
• IDENT : LanguagePackHeader
• ident : LanguagePackHeader , NamedGRFIdentifier
• IDLE_TIMEOUT : ClientNetworkContentSocketHandler , ClientNetworkCoordinatorSocketHandler
• IL_MULTIPLIER : IndustryViewWindow
• IL_NONE : IndustryViewWindow
• IL_RATE1 : IndustryViewWindow
• IL_RATE2 : IndustryViewWindow
• image : ParentSpriteToDraw
• image_1 : DrawIndustryAnimationStruct
• image_2 : DrawIndustryAnimationStruct
• image_3 : DrawIndustryAnimationStruct
• image_override : DisasterVehicle
• imgbtn : WidgetDimensions
• improved_load : OrderSettings
• IN_AUTOREFIT : LinkRefresher
• in_shutdown : ScriptInstance
• in_use : Livery
• in_window : CursorVars
• inaugurated_year : CompanyProperties , NetworkCompanyInfo
• IncIndustryTypeCount() : Industry
• Include() : CBinaryHeapT< T >
• include_empty : CompanyStationsWindow::FilterState
• income : CompanyEconomyEntry , NetworkCompanyInfo
• incoming_queue : NetworkGameSocketHandler
• IncrementImplicitOrderIndex() : Vehicle
• IncrementRealOrderIndex() : Vehicle
• IncrementSize() : CargoDataEntry
• IncTypeCount() : Object
• ind_cargo : IndustryCargoesWindow
• ind_scope : IndustryTileResolverObject
• ind_textsize : IndustryCargoesWindow
• ind_type : CargoesField
• indent : GUIEngineListItem
• Indent() : Rect
• indents : VehicleGroupWindow
• Index() : CargoSpec
• index : LangString , NWidgetCore , NWidgetMatrix , NWidgetPartWidget , NWidgetStacked
• Index() : ObjectSpec
• index : Pool< Titem, Tindex, Tgrowth_step, Tmax_size, Tpool_type, Tcache, Tzero >::PoolItem< Tpool > , VehicleListIdentifier
• indtile_scope : IndustryTileResolverObject
• indtype : Station
• indtypes : StationNameInformation
• industries_near : Station
• industries_scope : IndustriesResolverObject
• IndustriesResolverObject() : IndustriesResolverObject
• IndustriesScopeResolver() : IndustriesScopeResolver
• industry : CargoesField , IndustriesScopeResolver , IndustryTileScopeResolver , Station
• industry_cargo_scale : EconomySettings
• INDUSTRY_CUT_TREE_TICKS : Ticks
• industry_daily_change_counter : Economy
• industry_daily_increment : Economy
• industry_density : DifficultySettings
• industry_editbox : IndustryDirectoryWindow
• INDUSTRY_LINE_COLOUR : CargoesField
• INDUSTRY_MIN_NUMBER_OF_COLUMNS : SmallMapWindow
• industry_platform : ConstructionSettings
• INDUSTRY_PRODUCE_TICKS : Ticks
• industry_width : CargoesField
• IndustryNameSorter() : IndustryDirectoryWindow
• IndustryProductionSorter() : IndustryDirectoryWindow
• IndustryTileResolverObject() : IndustryTileResolverObject
• IndustryTileScopeResolver() : IndustryTileScopeResolver
• IndustryTransportedCargoSorter() : IndustryDirectoryWindow
• IndustryTypeSorter() : IndustryDirectoryWindow
• inf : NWidgetNewGRFDisplay
• infinite_money : DifficultySettings
• infl_amount : Economy
• infl_amount_pr : Economy
• inflation : EconomySettings
• inflation_payment : Economy
• inflation_prices : Economy
• info : Game
• Info() : Gamelog
• info : GRFConfig , NetworkGameList , NetworkGameSocketHandler , ScriptConfig
• info_dummy : AIScannerInfo
• info_height : BuildObjectWindow , IndustryViewWindow
• info_list : ScriptListWindow , ScriptScanner
• info_single_list : ScriptScanner
• InfoLine : IndustryViewWindow
• information_width : RefitWindow
• infos : ClientNetworkContentSocketHandler
• infrastructure : Company
• infrastructure_maintenance : EconomySettings
• ini_key : WindowDesc
• ini_set : BaseMusic , BaseSounds
• IniFile() : IniFile
• IniGroup() : IniGroup
• IniItem() : IniItem
• IniLoadFile() : IniLoadFile
• Init() : AyStar , BaseSettingEntry , BinaryHeap , Hash , LinkGraph , LinkGraphJob , OpenGLBackend , SettingEntry , SettingsContainer , SettingsPage
• init : TemporaryStorageArray< TYPE, SIZE >
• init_key : TemporaryStorageArray< TYPE, SIZE >
• init_load : SaveLoadFormat
• init_proc : Disaster
• init_write : SaveLoadFormat
• initial_city_size : EconomySettings
• initial_interest : DifficultySettings
• initial_payment : CargoSpec
• initial_random_bits : HouseScopeResolver
• initial_tempo : MpsMachine
• InitialiseCrashLog() : CrashLog
• Initialize() : AI , AIInstance , BitmapTileArea , Game , GameInstance , Layouter , OrderList , ScriptInstance , ScriptScanner , SocialIntegration , Squirrel
• InitializeData() : Window
• InitializeLayout() : Town
• InitializeLayouter() : ICUParagraphLayoutFactory
• InitializePositionSize() : Window
• InitializeUnicodeGlyphMap() : FontCache , MockFontCache , SpriteFontCache , TrueTypeFontCache
• InitializeViewport() : NWidgetViewport
• InitNested() : Window
• InitShaders() : OpenGLBackend
• InitThread() : CrashLog
• input_cargo_multiplier : IndustrySpec
• InputLoop() : VideoDriver , VideoDriver_Allegro , VideoDriver_Cocoa , VideoDriver_SDL , VideoDriver_SDL_Base , VideoDriver_Win32Base
• Insert() : Kdtree< T, TxyFunc, CoordT, DistT > , LRUCache< Tkey, Tdata > , MultiMap< Tkey, Tvalue, Tcompare >
• InsertChar() : Textbuf
• InsertClipboard() : Textbuf
• InsertClosedNode() : CNodeList_HashTableT< Titem_, Thash_bits_open_, Thash_bits_closed_ >
• InsertDefaults() : NewGRFClass< Tspec, Tid, Tmax >
• InsertEvent() : ScriptInstance
• InsertOpenNode() : CNodeList_HashTableT< Titem_, Thash_bits_open_, Thash_bits_closed_ >
• InsertOrderAt() : OrderList
• InsertOrRetrieve() : CargoDataEntry
• InsertRecursive() : Kdtree< T, TxyFunc, CoordT, DistT >
• InsertString() : Textbuf
• InsertTextString() : IConsoleWindow , Window
• inset : WidgetDimensions
• InShutdown() : ScriptInstance
• instance : Game , LinkGraphSchedule , OpenGLBackend , ScriptInstance
• instance_name : ScriptInfo
• instant_close : DropdownWindow
• intended_railtype : RailVehicleInfo
• interest_rate : Economy
• internal_fault_jmp_buf : CrashLogOSX , CrashLogUnix , CrashLogWindows
• internal_id : EngineIDMapping
• InternalClearCursorCache() : OpenGLBackend
• InternalDoAfter() : CommandHelperBase
• InternalDoBefore() : CommandHelperBase
• InternalExecutePrepTest() : CommandHelperBase
• InternalExecuteProcessResult() : CommandHelperBase
• InternalExecuteValidateTestAndPrepExec() : CommandHelperBase
• InternalPostBefore() : CommandHelperBase
• InternalPostResult() : CommandHelperBase
• Intersects() : OrthogonalTileArea
• interval : IntSettingDesc
• IntervalTimer() : IntervalTimer< TTimerType >
• intro_date : Engine
• intro_viewport_commands : SelectGameWindow
• introduces_railtypes : RailTypeInfo
• introduces_roadtypes : RoadTypeInfo
• introduction_date : ObjectSpec , RailTypeInfo , RoadTypeInfo
• introduction_required_railtypes : RailTypeInfo
• introduction_required_roadtypes : RoadTypeInfo
• INV_CARGO : StationViewWindow
• INV_FLOWS : StationViewWindow
• INVALID : ContentInfo
• INVALID_DATE : TimerGameConst< T >
• INVALID_DURATION : anonymous_namespace{framerate_gui.cpp}::PerformanceData
• invalid_id : OverrideManagerBase
• INVALID_NODE : Kdtree< T, TxyFunc, CoordT, DistT >
• invalid_path : Path
• INVALID_SIGNATURE : SocialIntegrationPlugin
• INVALID_TICKS : Ticks
• INVALID_YEAR : TimerGameConst< T >
• Invalidate() : FlowStat
• InvalidateAllFrom() : CargoPacket
• InvalidateCache() : CargoList< Tinst, Tcont > , VehicleCargoList
• InvalidateData() : Window
• InvalidateDimensionCache() : NWidgetLeaf
• InvalidateFileList() : ConsoleFileList
• InvalidateNewGRFCache() : Vehicle
• InvalidateNewGRFCacheOfChain() : Vehicle
• InvalidateStoryPageElementLayout() : StoryBookWindow
• Invalidation : StationViewWindow
• Is32BppSupported() : Blitter , OpenGLBackend , SpriteEncoder
• is_ai : CompanyProperties
• is_critical : ErrorMessageData
• is_dead : ScriptInstance
• is_developer_only : GameInfo
• is_female : SelectCompanyManagerFaceWindow
• is_freight : CargoSpec
• is_full_loading : LinkRefresher
• is_moust_male : SelectCompanyManagerFaceWindow
• is_paused : ScriptInstance
• is_pending_deletion : NetworkGameSocketHandler
• is_random : ScriptConfig
• is_save_data_on_stack : ScriptInstance
• is_started : ScriptInstance
• is_transparent : Layouter::LineCacheCompare
• is_vertical : Scrollbar
• is_viewport_candidate : MutableSpriteCache
• IsAlive() : ScriptInstance
• IsAnyStationTileReserved() : CYapfCostRailT< Types >
• IsArticulatedPart() : Vehicle
• IsAutoRefit() : Order
• IsAvailable() : AirportSpec , ObjectSpec
• IsAwarded() : Subsidy
• IsBetter() : CapacityAnnotation , DistanceAnnotation
• IsBoolSetting() : BoolSettingDesc , IntSettingDesc
• IsBuiltInFont() : CoreTextFontCache , FontCache , FreeTypeFontCache , MockFontCache , SpriteFontCache , TrueTypeFontCache
• IsBus() : RoadVehicle
• IsButton() : NWidgetToolbarContainer
• IsCancelled() : ClientNetworkContentSocketHandler
• isCancelled : ClientNetworkContentSocketHandler
• IsCancelled() : HTTPCallback , NetworkSurveyHandler
• IsCargoAccepted() : Industry
• IsCargoProduced() : Industry
• IsChainInDepot() : GroundVehicle< T, Type > , Vehicle
• IsCompatible() : GRFConfig
• IsCompletelyTimetabled() : Order
• IsCompleteTimetable() : OrderList
• IsConnected() : ClientNetworkGameSocketHandler , NetworkTCPSocketHandler
• isConnecting : ClientNetworkContentSocketHandler
• IsConnectInProgress() : NetworkError
• IsConnectionReset() : NetworkError
• IsCritical() : ErrmsgWindow
• IsCustomPlaylist() : MusicSystem
• IsDead() : ScriptDebugWindow , ScriptInstance
• IsDefaultValue() : IntSettingDesc , ListSettingDesc , NullSettingDesc , SettingDesc , StringSettingDesc
• IsDescSortOrder() : GUIList< T, P, F >
• IsDeveloperOnly() : GameInfo , ScriptInfo
• IsDisabled() : NWidgetCore
• IsDraggingDiagonal() : TileHighlightData
• IsDriveThroughRoadStopContinuation() : RoadStop
• IsEditable() : AIConfigWindow , GSConfigWindow , SettingDesc
• IsEmpty() : CBinaryHeapT< T > , FixedSizeArray< T, C > , NWidgetContainer , SmallArray< T, B, N > , SmallSet< Tdir, items > , SmallStack< Titem, Tindex, Tinvalid, Tgrowth_step, Tmax_size > , StringFilter
• IsEnabled() : Engine , ObjectSpec
• IsEnd() : ByteBuffer
• IsEngine() : GroundVehicle< T, Type >
• IsEngineCountable() : Vehicle
• IsEntranceBusy() : RoadStop
• IsEverAvailable() : ObjectSpec
• IsExpected() : SpecializedStation< T, Tis_waypoint >
• IsFamily() : NetworkAddress
• IsFiltered() : BaseSettingEntry
• IsFilterEnabled() : GUIList< T, P, F >
• IsFirstPageSelected() : StoryBookWindow
• IsFreeBay() : RoadStop
• IsFreeWagon() : GroundVehicle< T, Type >
• IsFrontEngine() : Vehicle
• IsFull() : CBinaryHeapT< T > , FixedSizeArray< T, C > , SmallArray< T, B, N > , SmallSet< Tdir, items >
• IsGotoOrder() : Order
• IsGroundVehicle() : Engine , Vehicle
• IsHidden() : Engine
• IsHighlighted() : NWidgetCore
• IsHumanID() : Company
• IsIn() : SmallSet< Tdir, items >
• IsInDepot() : Aircraft , RoadVehicle , Ship , Train , Vehicle
• IsInitialized() : Map
• IsInNetmask() : NetworkAddress
• IsInspectable() : NIHAirport , NIHAirportTile , NIHelper , NIHHouse , NIHIndustry , NIHIndustryTile , NIHObject , NIHRailType , NIHRoadStop , NIHRoadType , NIHStation , NIHTown , NIHVehicle
• IsIntSetting() : IntSettingDesc , SettingDesc
• IsInUse() : BaseStation
• IsJobAborted() : LinkGraphJob
• IsJobCompleted() : LinkGraphJob
• IsJoinWithUnfinishedJobDue() : LinkGraphSchedule
• IsLastPageSelected() : StoryBookWindow
• IsLeapYear() : TimerGame< T >
• IsLinkVisible() : LinkGraphOverlay
• IsLowered() : NWidgetCore
• IsMultiheaded() : GroundVehicle< T, Type >
• IsNewGRFInspectable() : IndustryViewWindow , LandInfoWindow , VehicleViewWindow , Window
• IsNormalAircraft() : Aircraft
• IsNull() : CCountedPtr< Tcls_ >
• isocode : LanguagePackHeader
• IsOfType() : Depot , Waypoint
• IsOrderListShared() : Vehicle
• IsParentSprite() : DrawTileSeqStruct
• IsPaused() : AI , Game , ScriptInstance
• IsPlaying() : MusicSystem
• IsPointVisible() : LinkGraphOverlay
• IsPrimaryVehicle() : Aircraft , RoadVehicle , Ship , Train , Vehicle
• IsProcessingIndustry() : IndustrySpec
• IsQueueEmpty() : HTTPThreadSafeCallback
• IsRandom() : ScriptConfig
• IsRawIndustry() : IndustrySpec
• IsRearDualheaded() : GroundVehicle< T, Type >
• IsReasonablyFinished() : LanguagePackHeader
• IsRefit() : Order
• IsResolved() : NetworkAddress
• IsSameValue() : IntSettingDesc , ListSettingDesc , NullSettingDesc , SettingDesc , StringSettingDesc
• IsScheduledToBeJoined() : LinkGraphJob
• IsSelected() : ContentInfo
• IsShaded() : Window
• IsShared() : OrderList
• IsShuffle() : MusicSystem
• IsSingleTile() : Waypoint
• IsSleeping() : ScriptInstance
• IsSongPlaying() : MusicDriver , MusicDriver_Allegro , MusicDriver_BeMidi , MusicDriver_Cocoa , MusicDriver_DMusic , MusicDriver_ExtMidi , MusicDriver_FluidSynth , MusicDriver_Null , MusicDriver_Win32
• IsSortable() : GUIList< T, P, F >
• IsStoppedInDepot() : Vehicle
• IsStringSetting() : SettingDesc , StringSettingDesc
• IsSuspended() : Squirrel
• IsTerminator() : DrawTileSeqStruct
• IsTopLevel() : RecursiveCommandCounter
• IsTravelTimetabled() : Order
• IsType() : Order
• IsUIAvailable() : NewGRFClass< Tspec, Tid, Tmax >
• IsUnbalanced() : Kdtree< T, TxyFunc, CoordT, DistT >
• IsUsable() : BlitterFactory , FBlitter_40bppAnim
• IsValid() : Backup< T > , ByteBuffer , CargoSpec , ContentInfo , LanguagePackHeader , VehicleSpriteSeq
• IsValidAiID() : Company
• IsValidDebugCompany() : ScriptDebugWindow
• IsValidHumanID() : Company
• IsValidID() : Pool< Titem, Tindex, Tgrowth_step, Tmax_size, Tpool_type, Tcache, Tzero > , Pool< Titem, Tindex, Tgrowth_step, Tmax_size, Tpool_type, Tcache, Tzero >::PoolItem< Tpool > , SpecializedStation< T, Tis_waypoint > , SpecializedVehicle< T, Type >
• IsValidSpriteSet() : GrfProcessingState
• IsVariantHidden() : Engine
• IsVehicleServiceIntervalEnabled() : VehicleDetailsWindow
• IsVertical() : Scrollbar
• IsVisible() : BaseSettingEntry , Scrollbar , SettingsContainer , SettingsPage
• IsVisibleByRestrictionMode() : SettingEntry
• IsWagon() : GroundVehicle< T, Type >
• IsWaitingForUnbunching() : Vehicle
• IsWaitTimetabled() : Order
• IsWidgetDisabled() : Window
• IsWidgetFocused() : Window
• IsWidgetGloballyFocused() : Window
• IsWidgetHighlighted() : Window
• IsWidgetLowered() : Window
• IsWithinMapBounds() : AirportSpec
• it : FlowEdgeIterator
• item : NewGRFProfiler::Call
• ItemAt() : CNodeList_HashTableT< Titem_, Thash_bits_open_, Thash_bits_closed_ >
• items : CBinaryHeapT< T > , ExpensesList , FixedSizeArray< T, C >::ArrayHeader , IniGroup , Pool< Titem, Tindex, Tgrowth_step, Tmax_size, Tpool_type, Tcache, Tzero >
• Items() : SmallSet< Tdir, items >
• items_dim : DropdownWindow
• ITER_CHARACTER : StringIterator
• ITER_WORD : StringIterator
• Iterate() : CargoSpec , Map , Pool< Titem, Tindex, Tgrowth_step, Tmax_size, Tpool_type, Tcache, Tzero >::PoolItem< Tpool > , SpecializedStation< T, Tis_waypoint > , SpecializedVehicle< T, Type > , Window
• IterateActive() : ServerNetworkAdminSocketHandler
• IterateFromBack : Window
• IterateFromFront : Window
• IterateType() : Engine
• Iterator : CargoList< Tinst, Tcont >
• IteratorToBack : Window
• IteratorToFront : Window
• IterType : StringIterator