ActnList unit

actnlist.pas contains classes which implements actions used in LCL components. The following components are added to the Lazarus IDE component palette:

Standard Tab

• TActionList

Registered but not displayed:

• TAction

actnlist.pas is part of the Lazarus Component Library (LCL).

Classes and records

TAction	class	TAction is the basic action object used in the LCL.
TActionLink	class	A link between an action and a client class.
TActionList	class	TActionList - The basic actions list class.
TActionListEnumerator	class	Implements an enumerator for the Actions in TCustomActionList.
TContainedAction	class	Implements an Action class which has a category and parent action list.
TCustomAction	class	TCustomAction is the ancestor class for TAction.
TCustomActionList	class	TCustomActionList - the ancestor class for TActionList.
TShortCutList	class	A list of shortcuts (accelerator keys) for actions in an action list.

Procedures and functions

CreateAction	function	Creates a new TBasicAction instance with the specified owner and class type.
EnumRegisteredActions	procedure	Enumerates the registered actions and calls a routine for values in Info.
Register	procedure	Registers components for use in the Lazarus IDE.
RegisterActions	procedure	Registers the array of action classes using the specified category name.
UnRegisterActions	procedure	Unregisters the specified array of action class types.

Types

TActionEvent	procedure type	Specifies an event handler signalled to implement an action in TCustomActionList.
TActionLinkClass	type	TActionLinkClass - class of TActionLink.
TActionListState	enumeration	Represents state values for an action list.
TContainedActionClass	type	Class type for TContainedAction instances.
TEnumActionProc	procedure type	Specifies a routine used to perform actions when enumerating actions.
THintEvent	procedure type	Specifies an event handler signalled to get the hint text for an action.

Constants

CreateActionProc	constant	Address of the routine used to create a new action in the action list editor.
EnumRegisteredActionsProc	constant	Address of the routine used to enumerate actions in the action list editor.
RegisterActionsProc	constant	Address of the routine used to register actions used in the action list editor in the Lazarus IDE.
UnRegisterActionsProc	constant	Address of the routine used to unregister actions used in the action list editor in the Lazarus IDE.

Variables

ApplicationActionComponent

variable

TApplication instance used to update and execute actions.

Uses

• Classes
• SysUtils
• LCLStrConsts
• LCLType
• LCLProc
• LCLIntf
• ImgList
• LCLClasses
• LMessages