### - c -

- CallbackID : newgrf_callbacks.h
- CanalCallbackMask : newgrf_callbacks.h
- CanalFeature : newgrf_canal.h
- CargoCallbackMask : newgrf_callbacks.h
- CargoClass : cargotype.h
- CargoPaymentRatesWidgets : graph_gui.cpp
- CargoSuffixType : industry_gui.cpp
- CargoTypes : cargo_type.h
- CatchmentArea : station_type.h
- CatenarySprite : elrail_data.h
- ChangeInfoResult : newgrf.cpp
- CharSetFilter : string_type.h
- CheckProc : industrytype.h
- ClearGround : clear_map.h
- ClientID : network_type.h
- ClientListWidgets : network_gui.cpp
- ClientStatus : tcp_game.h
- CmdFlags : strgen_tables.h
- CompanyFinancesWindowWidgets : company_gui.cpp
- CompanyLeagueWidgets : graph_gui.cpp
- CompanyManagerFaceVariable : company_manager_face.h
- CompanyValueWidgets : graph_gui.cpp
- CompanyWindowWidgets : company_gui.cpp
- ConsoleWidgets : console_gui.cpp
- ContentType : tcp_content.h
- Corner : slope_type.h
- CreateScenarioWindowWidgets : genworld_gui.cpp
- CustomCurrencyWidgets : settings_gui.cpp