Inventories and menus

Item stacks, player and block inventories, and custom menus.

Type	Kind	Description
BlockInventory	class	The inventory of a block entity by position: chests, trapped chests, barrels, furnaces, blast furnaces, smokers, hoppers, droppers, dispensers, brewing stands and shulker boxes.
ClickType	enum	How an inventory slot was clicked (vanilla ContainerInput folded with the button).
DragType	enum	Kind of inventory drag.
EngineInventory	class	Shared implementation of the inventories the engine owns: one native call per operation, the inventory is addressed by (kind, world, reference) every time, so a handle never keeps anything alive and a block that was destroyed meanwhile simply reads as an empty inventory.
IInventory	interface	A list of item slots: a player’s inventory, a chest, a plugin menu.
InventoryKind	enum	The kind of container a player has open.
ItemStack	struct	An immutable item stack value: an item type, a count and data components.
ItemView	struct	A read-only view of an item stack inside an event: the item and the count.
Menu	class	A custom GUI: a container with icons and click handlers that the client shows like a chest, a hopper or a dispenser.
MenuClick	class	A click in a MenuClick.Menu.
MenuClickType	enum	The kind of a click in a menu.
MenuCloseReason	enum	Why a plugin menu was closed for a player.
Menus	class	Creates menus owned by a plugin (plugin.Menus).
MenuType	enum	The vanilla menu type a Menu uses (what the client draws).
PlayerInventory	class	The inventory of a player: 41 slots numbered like the game’s own inventory container, plus the cursor.