Accessible Objects

Accessible Objects — The base accessibility interface which all accessible objects implement.

Functions

void	Accessible_ref ()
void	Accessible_unref ()
char *	Accessible_getName ()
char *	Accessible_getDescription ()
Accessible *	Accessible_getParent ()
long	Accessible_getChildCount ()
Accessible *	Accessible_getChildAtIndex ()
long	Accessible_getIndexInParent ()
AccessibleRelation **	Accessible_getRelationSet ()
AccessibleRole	Accessible_getRole ()
char *	Accessible_getRoleName ()
AccessibleStateSet *	Accessible_getStateSet ()
AccessibleAttributeSet *	Accessible_getAttributes ()
AccessibleApplication *	Accessible_getHostApplication ()
char *	Accessible_getLocalizedRoleName ()
SPIBoolean	Accessible_isAction ()
SPIBoolean	Accessible_isApplication ()
SPIBoolean	Accessible_isComponent ()
SPIBoolean	Accessible_isDocument ()
SPIBoolean	Accessible_isEditableText ()
SPIBoolean	Accessible_isHypertext ()
SPIBoolean	Accessible_isImage ()
SPIBoolean	Accessible_isSelection ()
SPIBoolean	Accessible_isStreamableContent ()
SPIBoolean	Accessible_isTable ()
SPIBoolean	Accessible_isText ()
SPIBoolean	Accessible_isValue ()
AccessibleAction *	Accessible_getAction ()
AccessibleApplication *	Accessible_getApplication ()
AccessibleComponent *	Accessible_getComponent ()
AccessibleDocument *	Accessible_getDocument ()
AccessibleEditableText *	Accessible_getEditableText ()
AccessibleHypertext *	Accessible_getHypertext ()
AccessibleImage *	Accessible_getImage ()
AccessibleSelection *	Accessible_getSelection ()
AccessibleStreamableContent *	Accessible_getStreamableContent ()
AccessibleTable *	Accessible_getTable ()
AccessibleText *	Accessible_getText ()
AccessibleValue *	Accessible_getValue ()
AccessibleUnknown *	Accessible_queryInterface ()
char *	AccessibleRole_getName ()

Types and Values

struct	Accessible
enum	AccessibleRole

Description

The Accessible interface provides for a hierarchical tree of accessible objects corresponding to user interface components and content in an accessible application. Accessible objects provide name, descriptive information, state information, and information on the "role" of the object in the user interface. The capabilities of these objects may be queried via interface queries, as they are implemented via interface aggregation. These objects are located in a containment hierarchy with parent/child relationships, and may have other functional relationships to objects within the tree.

Functions

Accessible_ref ()

void
Accessible_ref (Accessible *obj);

Increment the reference count for an Accessible object.

Parameters

obj

a pointer to the Accessible object on which to operate.

Accessible_unref ()

void
Accessible_unref (Accessible *obj);

Decrement the reference count for an Accessible object.

Parameters

obj

a pointer to the Accessible object on which to operate.

Accessible_getName ()

char *
Accessible_getName (Accessible *obj);

Get the name of an Accessible object.

Parameters

obj

a pointer to the Accessible object on which to operate.

Returns

a UTF-8 string indicating the name of the Accessible object. or NULL on exception

Accessible_getDescription ()

char *
Accessible_getDescription (Accessible *obj);

Get the description of an Accessible object.

Parameters

obj

a pointer to the Accessible object on which to operate.

Returns

a UTF-8 string describing the Accessible object. or NULL on exception

Accessible_getParent ()

Accessible *
Accessible_getParent (Accessible *obj);

Get an Accessible object's parent container.

Parameters

obj

a pointer to the Accessible object to query.

Returns

a pointer tothe Accessible object which contains the given Accessible instance, or NULL if the obj has no parent container.

Accessible_getChildCount ()

long
Accessible_getChildCount (Accessible *obj);

Get the number of children contained by an Accessible object.

Parameters

obj

a pointer to the Accessible object on which to operate.

Returns

a long indicating the number of Accessible children contained by an Accessible object. or -1 on exception

Accessible_getChildAtIndex ()

Accessible *
Accessible_getChildAtIndex (Accessible *obj,
                            long int childIndex);

Get the Accessible child of an Accessible object at a given index.

Parameters

obj	a pointer to the Accessible object on which to operate.
childIndex	a long indicating which child is specified.

Returns

a pointer to the Accessible child object at index childIndex . or NULL on exception

Accessible_getIndexInParent ()

long
Accessible_getIndexInParent (Accessible *obj);

Get the index of an Accessible object in its containing Accessible.

Parameters

obj

a pointer to the Accessible object on which to operate.

Returns

a long indicating the index of the Accessible object in its parent (i.e. containing) Accessible instance, or -1 if obj has no containing parent or on exception.

Accessible_getRelationSet ()

AccessibleRelation **
Accessible_getRelationSet (Accessible *obj);

Get the set of AccessibleRelation objects which describe this Accessible object's relationships with other Accessible objects.

Parameters

obj

a pointer to the Accessible object on which to operate.

Returns

an array of AccessibleRelation pointers. or NULL on exception

Accessible_getRole ()

AccessibleRole
Accessible_getRole (Accessible *obj);

Get the UI role of an Accessible object. A UTF-8 string describing this role can be obtained via Accessible_getRoleName().

Parameters

obj

a pointer to the Accessible object on which to operate.

Returns

the AccessibleRole of the object.

Accessible_getRoleName ()

char *
Accessible_getRoleName (Accessible *obj);

Get a UTF-8 string describing the role this object plays in the UI. This method will return useful values for roles that fall outside the enumeration used in Accessible_getRole().

Parameters

obj

a pointer to the Accessible object on which to operate.

Returns

a UTF-8 string specifying the role of this Accessible object.

Accessible_getStateSet ()

AccessibleStateSet *
Accessible_getStateSet (Accessible *obj);

Gets the current state of an object.

Parameters

obj

a pointer to the Accessible object on which to operate.

Returns

a pointer to an AccessibleStateSet representing the object's current state.

Accessible_getAttributes ()

AccessibleAttributeSet *
Accessible_getAttributes (Accessible *obj);

Get the AttributeSet representing any assigned name-value pair attributes or annotations for this object. For typographic, textual, or textually-semantic attributes, see AccessibleText_getAttributes instead.

Parameters

obj

The Accessible being queried.

Returns

The name-value-pair attributes assigned to this object.

Accessible_getHostApplication ()

AccessibleApplication *
Accessible_getHostApplication (Accessible *obj);

Get the containing AccessibleApplication for an object.

Parameters

obj

The Accessible being queried.

Returns

the containing AccessibleApplication instance for this object.

Accessible_getLocalizedRoleName ()

char *
Accessible_getLocalizedRoleName (Accessible *obj);

Get a UTF-8 string describing the (localized) role this object plays in the UI. This method will return useful values for roles that fall outside the enumeration used in Accessible_getRole().

Since : AT-SPI 1.4

Parameters

obj

a pointer to the Accessible object on which to operate.

Returns

a UTF-8 string specifying the role of this Accessible object.

Accessible_isAction ()

SPIBoolean
Accessible_isAction (Accessible *obj);

Query whether the specified Accessible implements AccessibleAction.

Parameters

obj

a pointer to the Accessible instance to query.

Returns

TRUE if obj implements the AccessibleAction interface, FALSE otherwise.

Accessible_isApplication ()

SPIBoolean
Accessible_isApplication (Accessible *obj);

Query whether the specified Accessible implements AccessibleApplication.

Parameters

obj

a pointer to the Accessible instance to query.

Returns

TRUE if obj implements the AccessibleApplication interface, FALSE otherwise.

Accessible_isComponent ()

SPIBoolean
Accessible_isComponent (Accessible *obj);

Query whether the specified Accessible implements AccessibleComponent.

Parameters

obj

a pointer to the Accessible instance to query.

Returns

TRUE if obj implements the AccessibleComponent interface, FALSE otherwise.

Accessible_isDocument ()

SPIBoolean
Accessible_isDocument (Accessible *obj);

Query whether the specified Accessible implements AccessibleDocument.

Parameters

obj

a pointer to the Accessible instance to query.

Returns

TRUE if obj implements the AccessibleDocument interface, FALSE otherwise.

Accessible_isEditableText ()

SPIBoolean
Accessible_isEditableText (Accessible *obj);

Query whether the specified Accessible implements AccessibleEditableText.

Parameters

obj

a pointer to the Accessible instance to query.

Returns

TRUE if obj implements the AccessibleEditableText interface, FALSE otherwise.

Accessible_isHypertext ()

SPIBoolean
Accessible_isHypertext (Accessible *obj);

Query whether the specified Accessible implements AccessibleHypertext.

Parameters

obj

a pointer to the Accessible instance to query.

Returns

TRUE if obj implements the AccessibleHypertext interface, FALSE otherwise.

Accessible_isImage ()

SPIBoolean
Accessible_isImage (Accessible *obj);

Query whether the specified Accessible implements AccessibleImage.

Parameters

obj

a pointer to the Accessible instance to query.

Returns

TRUE if obj implements the AccessibleImage interface, FALSE otherwise.

Accessible_isSelection ()

SPIBoolean
Accessible_isSelection (Accessible *obj);

Query whether the specified Accessible implements AccessibleSelection.

Parameters

obj

a pointer to the Accessible instance to query.

Returns

TRUE if obj implements the AccessibleSelection interface, FALSE otherwise.

Accessible_isStreamableContent ()

SPIBoolean
Accessible_isStreamableContent (Accessible *obj);

Query whether the specified Accessible implements AccessibleStreamableContent.

Parameters

obj

a pointer to the Accessible instance to query.

Returns

TRUE if obj implements the AccessibleStreamableContent interface, FALSE otherwise.

Accessible_isTable ()

SPIBoolean
Accessible_isTable (Accessible *obj);

Query whether the specified Accessible implements AccessibleTable.

Parameters

obj

a pointer to the Accessible instance to query.

Returns

TRUE if obj implements the AccessibleTable interface, FALSE otherwise.

Accessible_isText ()

SPIBoolean
Accessible_isText (Accessible *obj);

Query whether the specified Accessible implements AccessibleText.

Parameters

obj

a pointer to the Accessible instance to query.

Returns

TRUE if obj implements the AccessibleText interface, FALSE otherwise.

Accessible_isValue ()

SPIBoolean
Accessible_isValue (Accessible *obj);

Query whether the specified Accessible implements AccessibleValue.

Parameters

obj

a pointer to the Accessible instance to query.

Returns

TRUE if obj implements the AccessibleValue interface, FALSE otherwise.

Accessible_getAction ()

AccessibleAction *
Accessible_getAction (Accessible *obj);

Get the AccessibleAction interface for an Accessible.

Parameters

obj

a pointer to the Accessible instance to query.

Returns

a pointer to an AccessibleAction interface instance, or NULL if obj does not implement AccessibleAction.

Accessible_getApplication ()

AccessibleApplication *
Accessible_getApplication (Accessible *obj);

Get the AccessibleApplication interface for an Accessible.

Parameters

obj

a pointer to the Accessible instance to query.

Returns

a pointer to an AccessibleApplication interface instance, or NULL if obj does not implement AccessibleApplication.

Accessible_getComponent ()

AccessibleComponent *
Accessible_getComponent (Accessible *obj);

Get the AccessibleComponent interface for an Accessible.

Parameters

obj

a pointer to the Accessible instance to query.

Returns

a pointer to an AccessibleComponent interface instance, or NULL if obj does not implement AccessibleComponent.

Accessible_getDocument ()

AccessibleDocument *
Accessible_getDocument (Accessible *obj);

Get the AccessibleDocument interface for an Accessible.

Parameters

obj

a pointer to the Accessible instance to query.

Returns

a pointer to an AccessibleDocument interface instance, or NULL if obj does not implement AccessibleDocument.

Accessible_getEditableText ()

AccessibleEditableText *
Accessible_getEditableText (Accessible *obj);

Get the AccessibleEditableText interface for an Accessible.

Parameters

obj

a pointer to the Accessible instance to query.

Returns

a pointer to an AccessibleEditableText interface instance, or NULL if obj does not implement AccessibleEditableText.

Accessible_getHypertext ()

AccessibleHypertext *
Accessible_getHypertext (Accessible *obj);

Get the AccessibleHypertext interface for an Accessible.

Parameters

obj

a pointer to the Accessible instance to query.

Returns

a pointer to an AccessibleHypertext interface instance, or NULL if obj does not implement AccessibleHypertext.

Accessible_getImage ()

AccessibleImage *
Accessible_getImage (Accessible *obj);

Get the AccessibleImage interface for an Accessible.

Parameters

obj

a pointer to the Accessible instance to query.

Returns

a pointer to an AccessibleImage interface instance, or NULL if obj does not implement AccessibleImage.

Accessible_getSelection ()

AccessibleSelection *
Accessible_getSelection (Accessible *obj);

Get the AccessibleSelection interface for an Accessible.

Parameters

obj

a pointer to the Accessible instance to query.

Returns

a pointer to an AccessibleSelection interface instance, or NULL if obj does not implement AccessibleSelection.

Accessible_getStreamableContent ()

AccessibleStreamableContent *
Accessible_getStreamableContent (Accessible *obj);

Get the AccessibleStreamableContent interface for an Accessible.

Parameters

obj

a pointer to the Accessible instance to query.

Returns

a pointer to an AccessibleStreamableContent interface instance, or NULL if obj does not implement AccessibleStreamableContent.

Accessible_getTable ()

AccessibleTable *
Accessible_getTable (Accessible *obj);

Get the AccessibleTable interface for an Accessible.

Parameters

obj

a pointer to the Accessible instance to query.

Returns

a pointer to an AccessibleTable interface instance, or NULL if obj does not implement AccessibleTable.

Accessible_getText ()

AccessibleText *
Accessible_getText (Accessible *obj);

Get the AccessibleText interface for an Accessible.

Parameters

obj

a pointer to the Accessible instance to query.

Returns

a pointer to an AccessibleText interface instance, or NULL if obj does not implement AccessibleText.

Accessible_getValue ()

AccessibleValue *
Accessible_getValue (Accessible *obj);

Get the AccessibleValue interface for an Accessible.

Parameters

obj

a pointer to the Accessible instance to query.

Returns

a pointer to an AccessibleValue interface instance, or NULL if obj does not implement AccessibleValue.

Accessible_queryInterface ()

AccessibleUnknown *
Accessible_queryInterface (Accessible *obj,
                           const char *interface_name);

Query an Accessible object to for a named interface.

Parameters

obj	a pointer to the Accessible instance to query.
interface_name	a UTF-8 character string specifiying the requested interface.

Returns

an instance of the named interface object, if it is implemented by obj , or NULL otherwise.

AccessibleRole_getName ()

char *
AccessibleRole_getName (AccessibleRole role);

Get a localizeable string that indicates the name of an AccessibleRole. <em>DEPRECATED.</em>

Parameters

role

an AccessibleRole object to query.

Returns

a localizable string name for an AccessibleRole enumerated type.

Types and Values

struct Accessible

struct Accessible {
	CORBA_Object objref;
	/* And some other bits */
	guint        on_loan : 1;
	guint        ref_count : 30;
};

An Accessible object is an opaque object used to refer to an accessible object corresponding to an user interface element.

Members

CORBA_Object `objref`;	private data
guint `on_loan` : 1;	private data
guint `ref_count` : 30;	private data

enum AccessibleRole

Describes the role of an object

These are the built-in enumerated roles that UI components can have. Other roles may be added at runtime, so an AccessibleRole >= SPI_ROLE_LAST_DEFINED is not necessarily an error.

Members

SPI_ROLE_INVALID	role is not legal, something is wrong with this object
SPI_ROLE_ACCEL_LABEL	object is a label indicating keyboard accelerators for the parent
SPI_ROLE_ALERT	Object is used to alert the user about something
SPI_ROLE_ANIMATION	Object contains a dynamic or moving image
SPI_ROLE_ARROW	Object is a 2d directional indicator
SPI_ROLE_CALENDAR	Object contains one or more dates, usually arranged into a 2d list
SPI_ROLE_CANVAS	Object that can be drawn into and is used to trap events
SPI_ROLE_CHECK_BOX	Object representd a choice that can be checked or unchecked and provides a separate indicator for the current state.
SPI_ROLE_CHECK_MENU_ITEM	Object is a menu item that behaves like a CHECK_BOX
SPI_ROLE_COLOR_CHOOSER	A specialized dialog that lets the user choose a color.
SPI_ROLE_COLUMN_HEADER	The header for a column of data
SPI_ROLE_COMBO_BOX	A list of choices the user can select from
SPI_ROLE_DATE_EDITOR	Allows entry of a date
SPI_ROLE_DESKTOP_ICON	An inconifed internal frame within a DESKTOP_PANE
SPI_ROLE_DESKTOP_FRAME	A pane that supports internal frames and iconified versions of those internal frames.
SPI_ROLE_DIAL	A rotating/rotatable valuator
SPI_ROLE_DIALOG	A top level window with title bar and a border
SPI_ROLE_DIRECTORY_PANE	A pane that allows the user to navigate through and select the contents of a directory.
SPI_ROLE_DRAWING_AREA	An object used for drawing custom user interface elements
SPI_ROLE_FILE_CHOOSER	A specialized dialog that displays the files in the directory and lets the user select a file, browse a different directory, or specify a filename.
SPI_ROLE_FILLER	A object that fills up space in a user interface
SPI_ROLE_FONT_CHOOSER	Allows selection of a display font
SPI_ROLE_FRAME	A top level window with a title bar, border, menubar, etc.
SPI_ROLE_GLASS_PANE	A pane that is guaranteed to be painted on top of all panes beneath it
SPI_ROLE_HTML_CONTAINER	A document container for HTML, whose children represent the document content.
SPI_ROLE_ICON	A small fixed size picture, typically used to decorate components.
SPI_ROLE_IMAGE	An image, typically static
SPI_ROLE_INTERNAL_FRAME	A frame-like object that is clipped by a desktop pane.
SPI_ROLE_LABEL	An object used to present an icon or short string in an interface
SPI_ROLE_LAYERED_PANE	A specialized pane that allows its children to be drawn in layers providing a form of stacking order.
SPI_ROLE_LIST	An object that presents a list of objects to the user and allows the user to select one or more of them.
SPI_ROLE_LIST_ITEM	An object that represents an element of a list.
SPI_ROLE_MENU	An object usually found inside a menu bar that contains a list of actions the user can choose from.
SPI_ROLE_MENU_BAR	An object usually drawn at the top of the primary dialog box of an application that contains a list of menus the user can choose from.
SPI_ROLE_MENU_ITEM	An object usually contained in a menu that presents an action the user can choose.
SPI_ROLE_OPTION_PANE	A specialized pane whose primary use is inside a DIALOG
SPI_ROLE_PAGE_TAB	An object that is a child of a page tab list
SPI_ROLE_PAGE_TAB_LIST	An object that presents a series of panels (or page tabs), one at a time, through some mechanism provided by the object.
SPI_ROLE_PANEL	A generic container that is often used to group objects.
SPI_ROLE_PASSWORD_TEXT	A text object uses for passwords, or other places where the text content is not shown visibly to the user.
SPI_ROLE_POPUP_MENU	A temporary window that is usually used to offer the user a list of choices, and then hides when the user selects one of those choices.
SPI_ROLE_PROGRESS_BAR	An object used to indicate how much of a task has been completed.
SPI_ROLE_PUSH_BUTTON	A specialized object which the user can interact with to tell the application to do something.
SPI_ROLE_RADIO_BUTTON	A specialized check box that will cause other radio buttons in the same group to become uncghecked when this one is checked.
SPI_ROLE_RADIO_MENU_ITEM	A specialized menu item that behaves like a radio button.
SPI_ROLE_ROOT_PANE	A specialized pane that has a glass pane and a layered pane as its children.
SPI_ROLE_ROW_HEADER	The header for a row of data
SPI_ROLE_SCROLL_BAR	An object usually used to allow a user to incrementally view a large amount of data.
SPI_ROLE_SCROLL_PANE	An object that allows a user to incrementally view a large amount of information.
SPI_ROLE_SEPARATOR	An object usually contained in a menu to provide a visible and logical separation of the contents in a menu.
SPI_ROLE_SLIDER	An object that allows the user to select from a bounded range.
SPI_ROLE_SPIN_BUTTON	An object which allows selection from a set of choices and displays the current choice.
SPI_ROLE_SPLIT_PANE	A specialized panel that presents two other panels at the same time.
SPI_ROLE_STATUS_BAR	An object the display qualitative status information. c.f. PROGRESS_BAR
SPI_ROLE_TABLE	An object used to rpesent information in terms of rows and columns.
SPI_ROLE_TABLE_CELL	An object which is a descendant of a table, with a row/column location. A cell may span multiple rows and columns.
SPI_ROLE_TABLE_COLUMN_HEADER	An object which serves to describe a column in a table.
SPI_ROLE_TABLE_ROW_HEADER	An object which serves to label or describe a row in a table.
SPI_ROLE_TEAROFF_MENU_ITEM	A menu item which allows the menu to be removed from a menubar and placed in its own window
SPI_ROLE_TERMINAL	An object that emulates a teletype or terminal
SPI_ROLE_TEXT	An object that presents text to the user
SPI_ROLE_TOGGLE_BUTTON	A specialized push button that can be checked or unchecked, but does not provide a separate indicator for the current state.
SPI_ROLE_TOOL_BAR	A bar or palette usually composed of push buttons or toggle buttons
SPI_ROLE_TOOL_TIP	An object that provides information about another object
SPI_ROLE_TREE	An object used to represent hierarchical information to the user
SPI_ROLE_TREE_TABLE	An object which represents both hierarchical and tabular information
SPI_ROLE_UNKNOWN	The object contains some SpiAccessible information, but its role is not known.
SPI_ROLE_VIEWPORT	An object usually used in a scroll pane, which restricts the visual area into which its contents are presented.
SPI_ROLE_WINDOW	A top level window with no title or border.
SPI_ROLE_EXTENDED	This object's role is not included in the standard role list and should be queried by name.
SPI_ROLE_HEADER	An object that serves as a document header.
SPI_ROLE_FOOTER	An object that serves as a document footer.
SPI_ROLE_PARAGRAPH	An object which is contains a paragraph of text content.
SPI_ROLE_RULER	An object which describes margins and tab stops, etc. for text objects which it controls (should have CONTROLLER_FOR relation to such).
SPI_ROLE_APPLICATION	An object which corresponds to a desktop application, which may have children of `SPI_ROLE_FRAME` or other type.
SPI_ROLE_AUTOCOMPLETE	The object is a dialog or list containing items for insertion into an entry widget, for instance a list of words for completion of a text entry.
SPI_ROLE_EDITBAR	The object is an editable text object in a toolbar
SPI_ROLE_EMBEDDED	The object is an embedded component container. This role is a "grouping" hint that the contained objects share a context which is different from the container in which this accessible is embedded. Uses: document embedding, "panel applets", etc.
SPI_ROLE_ENTRY	The object is a component whose textual content may be entered or modified by the user, provided `SPI_STATE_EDITABLE` is present.
SPI_ROLE_CHART	The object is a graphical depiction of quantitative data. It may contain multiple subelements whose attributes and/or description may be queried to obtain both the quantitative data and information about how the data is being presented. The LABELLED_BY relation is particularly important in interpreting objects of this type, as is the accessible-description property.
SPI_ROLE_CAPTION	The object contains descriptive information, usually textual, about another user interface element such as a table, chart, or image.
SPI_ROLE_DOCUMENT_FRAME	The object is a visual frame or container which contains a view of document content. Document frames may occur within another Document instance, in which case the second document may be said to be embedded in the containing instance. HTML frames are often ROLE_DOCUMENT_FRAME. Either this object, or a singleton descendant, should implement the Document interface.
SPI_ROLE_HEADING	The object serves as a heading for content which follows it in a document. The 'heading level' of the heading, if availabe, may be obtained by querying the object's attributes.
SPI_ROLE_PAGE	The object is a containing instance which encapsulates a page of information. `SPI_ROLE_PAGE` is used in documents and content which support a paginated navigation model.
SPI_ROLE_SECTION	The object is a containing instance of document content which constitutes a particular 'logical' section of the document. The type of content within a section, and the nature of the section division itself, may be obtained by querying the object's attributes. Sections may be nested.
SPI_ROLE_FORM	The object is a container for form controls, for instance as part of a web form or user-input form within a document. This role is primarily a tag/convenience for clients when navigating complex documents, it is not expected that ordinary GUI containers will always have ATK_ROLE_FORM.
SPI_ROLE_REDUNDANT_OBJECT	The object is redundant with another object in the hierarchy, and is exposed for purely technical reasons. Objects of this role should normally be ignored by clients.
SPI_ROLE_LINK	The object is a hypertext anchor.
SPI_ROLE_INPUT_METHOD_WINDOW	The object is an input method window used to input or compose a text character (typically a "complex text" character).
SPI_ROLE_LAST_DEFINED	Used to determine the end of the role enumeration.