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

### - h -

- h : TileArea
- HandleBreakdown() : Vehicle
- HandleButtonClick() : Window
- HandleHeader() : NetworkHTTPSocketHandler
- HandleIncomingNetworkGameInfoGRFConfig() : NetworkUDPSocketHandler , ClientNetworkUDPSocketHandler
- HandleLoading() : Vehicle
- HandlePacket() : NetworkAdminSocketHandler , NetworkContentSocketHandler , NetworkGameSocketHandler
- HandlePathfindingResult() : Vehicle
- handles : Fio
- HandleUDPPacket() : NetworkUDPSocketHandler
- hangar_num : HangarTileTable
- hard_value : AIConfigItem
- has_2CC : GRFLoadedFeatures
- has_newhouses : GRFLoadedFeatures
- has_newindustries : GRFLoadedFeatures
- has_param_defaults : GRFConfig
- has_quit : NetworkSocketHandler
- HasAI() : AI , AIConfig
- HasArticulatedPart() : Vehicle
- HasCargoClass() : AICargo
- HasClientQuit() : NetworkSocketHandler
- HasCommonValidCargo() : IndustryCargoesWindow
- HasConnection() : CargoesField
- HasDepotOrder() : Vehicle
- HasDock() : AIIndustry , AIIndustryType
- HasErrors() : LoadCheckData
- HasFreeBay() : RoadStop
- HasGrfIdentifier() : GRFIdentifier
- hash : MD5File
- HasHangar() : Airport
- HasHeliport() : AIIndustry , AIIndustryType
- HasItem() : AIList
- HasNewGrfs() : LoadCheckData
- HasPowerOnRail() : AIEngine
- HasRoadType() : AIRoad , AIStation
- HasScriptCrashed() : Squirrel
- HasSet() : BaseMedia< Tbase_set >
- HasSharedOrders() : AIVehicle
- HasStationType() : AIStation
- HasStatue() : AITown
- HasToUseGetSlopeZ() : RoadVehicle , Train
- HasTransportType() : AITile
- HasTreeOnTile() : AITile
- HasVariableParameter() : NewGRFInspectWindow
- HasWagonRemoval() : AIGroup
- HasWaypointType() : AIWaypoint
- Hdr() : ByteBlob , FixedSizeArray< T, C >
- hdrEmpty : ByteBlob
- head : NWidgetContainer
- header : CargoesField , ByteBlob
- heading : AirportFTAbuildup , AirportFTA
- HeapifyDown() : CBinaryHeapT< T >
- HeapifyUp() : CBinaryHeapT< T >
- height : Sprite , Units , Blitter::BlitterParams , BmpInfo , ObjectSpec , LegendAndColour , SpriteLoader::Sprite , TerraformerHeightMod , Window , HeightMap , ViewPort
- height_colours : SmallMapColourScheme
- height_detailed : ErrmsgWindow
- height_summary : ErrmsgWindow
- heightmap_rotation : GameCreationSettings
- HELICOPTERS : AirportFTAClass
- helper : NIFeature
- highest : ValuesInterval
- highest_value : SnowLine
- highlight_row : AIDebugWindow
- hook : IConsoleCmd
- HOR_CARGO_BORDER_SPACE : CargoesField
- HOR_CARGO_SPACE : CargoesField
- HOR_CARGO_WIDTH : CargoesField
- HOR_TEXT_PADDING : IndustryCargoesWindow
- hostname : NetworkAddress , NetworkGameInfo
- Hotkey() : Hotkey< T >
- HousesCanAccept() : IndustryCargoesWindow
- HousesCanSupply() : IndustryCargoesWindow
- hover_delay : GUISettings
- hs : SearchNearbyHouseData
- hscroll : DepotWindow , RefitWindow
- http_response : ClientNetworkContentSocketHandler
- http_response_index : ClientNetworkContentSocketHandler
- HTTPReceive() : NetworkHTTPSocketHandler