QAccessible(3qt)

NAME
QAccessible - Enums and static functions relating to accessibility

SYNOPSIS
#include <qaccessible.h>

Inherited by QAccessibleInterface.

  Public Members
enum Event { SoundPlayed = 0x0001, Alert = 0x0002, ForegroundChanged = 0x0003, MenuStart = 0x0004, MenuEnd = 0x0005, PopupMenuStart = 0x0006, PopupMenuEnd = 0x0007, ContextHelpStart = 0x000C, ContextHelpEnd = 0x000D, DragDropStart = 0x000E, DragDropEnd = 0x000F, DialogStart = 0x0010, DialogEnd = 0x0011, ScrollingStart = 0x0012, ScrollingEnd = 0x0013, MenuCommand = 0x0018, ObjectCreated = 0x8000, ObjectDestroyed = 0x8001, ObjectShow = 0x8002, ObjectHide = 0x8003, ObjectReorder = 0x8004, Focus = 0x8005, Selection = 0x8006, SelectionAdd = 0x8007, SelectionRemove = 0x8008, SelectionWithin = 0x8009, StateChanged = 0x800A, LocationChanged = 0x800B, NameChanged = 0x800C, DescriptionChanged = 0x800D, ValueChanged = 0x800E, ParentChanged = 0x800F, HelpChanged = 0x80A0, DefaultActionChanged = 0x80B0, AcceleratorChanged = 0x80C0 }
enum State { Normal = 0x00000000, Unavailable = 0x00000001, Selected = 0x00000002, Focused = 0x00000004, Pressed = 0x00000008, Checked = 0x00000010, Mixed = 0x00000020, ReadOnly = 0x00000040, HotTracked = 0x00000080, Default = 0x00000100, Expanded = 0x00000200, Collapsed = 0x00000400, Busy = 0x00000800, Floating = 0x00001000, Marqueed = 0x00002000, Animated = 0x00004000, Invisible = 0x00008000, Offscreen = 0x00010000, Sizeable = 0x00020000, Moveable = 0x00040000, SelfVoicing = 0x00080000, Focusable = 0x00100000, Selectable = 0x00200000, Linked = 0x00400000, Traversed = 0x00800000, MultiSelectable = 0x01000000, ExtSelectable = 0x02000000, AlertLow = 0x04000000, AlertMedium = 0x08000000, AlertHigh = 0x10000000, Protected = 0x20000000, Valid = 0x3fffffff }
enum Role { NoRole = 0x00000000, TitleBar = 0x00000001, MenuBar = 0x00000002, ScrollBar = 0x00000003, Grip = 0x00000004, Sound = 0x00000005, Cursor = 0x00000006, Caret = 0x00000007, AlertMessage = 0x00000008, Window = 0x00000009, Client = 0x0000000A, PopupMenu = 0x0000000B, MenuItem = 0x0000000C, ToolTip = 0x0000000D, Application = 0x0000000E, Document = 0x0000000F, Pane = 0x00000010, Chart = 0x00000011, Dialog = 0x00000012, Border = 0x00000013, Grouping = 0x00000014, Separator = 0x00000015, ToolBar = 0x00000016, StatusBar = 0x00000017, Table = 0x00000018, ColumnHeader = 0x00000019, RowHeader = 0x0000001A, Column = 0x0000001B, Row = 0x0000001C, Cell = 0x0000001D, Link = 0x0000001E, HelpBalloon = 0x0000001F, Character = 0x00000020, List = 0x00000021, ListItem = 0x00000022, Outline = 0x00000023, OutlineItem = 0x00000024, PageTab = 0x00000025, PropertyPage = 0x00000026, Indicator = 0x00000027, Graphic = 0x00000028, StaticText = 0x00000029, EditableText = 0x0000002A, PushButton = 0x0000002B, CheckBox = 0x0000002C, RadioButton = 0x0000002D, ComboBox = 0x0000002E, DropLest = 0x0000002F, ProgressBar = 0x00000030, Dial = 0x00000031, HotkeyField = 0x00000032, Slider = 0x00000033, SpinBox = 0x00000034, Diagram = 0x00000035, Animation = 0x00000036, Equation = 0x00000037, ButtonDropDown = 0x00000038, ButtonMenu = 0x00000039, ButtonDropGrid = 0x0000003A, Whitespace = 0x0000003B, PageTabList = 0x0000003C, Clock = 0x0000003D }
enum NavDirection { NavUp = 0x00000001, NavDown = 0x00000002, NavLeft = 0x00000003, NavRight = 0x00000004, NavNext = 0x00000005, NavPrevious = 0x00000006, NavFirstChild = 0x00000007, NavLastChild = 0x00000008, NavFocusChild = 0x00000009 }
enum Text { Name = 0, Description, Value, Help, Accelerator, DefaultAction }

  Static Public Members
QRESULT queryAccessibleInterface ( QObject * object, QAccessibleInterface ** iface )
void updateAccessibility ( QObject * object, int control, Event reason )
bool isActive ()

DESCRIPTION
The QAccessible class provides enums and static functions relating to accessibility.

Accessibility clients use implementations of the QAccessibleInterface to read the information an accessible object exposes, or to call functions to manipulate the accessible object.

See the plugin documentation for more details about how to redistribute Qt plugins.

See also Miscellaneous Classes.

  Member Type Documentation

QAccessible::Event
This enum type defines event types when the state of the accessible object has changed. The event types are:

QAccessible::SoundPlayed

QAccessible::Alert

QAccessible::ForegroundChanged

QAccessible::MenuStart

QAccessible::MenuEnd

QAccessible::PopupMenuStart

QAccessible::PopupMenuEnd

QAccessible::ContextHelpStart

QAccessible::ContextHelpEnd

QAccessible::DragDropStart

QAccessible::DragDropEnd

QAccessible::DialogStart

QAccessible::DialogEnd

QAccessible::ScrollingStart

QAccessible::ScrollingEnd

QAccessible::ObjectCreated

QAccessible::ObjectDestroyed

QAccessible::ObjectShow

QAccessible::ObjectHide

QAccessible::ObjectReorder

QAccessible::Focus

QAccessible::Selection

QAccessible::SelectionAdd

QAccessible::SelectionRemove

QAccessible::SelectionWithin

QAccessible::StateChanged

QAccessible::LocationChanged

QAccessible::NameChanged

QAccessible::DescriptionChanged

QAccessible::ValueChanged

QAccessible::ParentChanged

QAccessible::HelpChanged

QAccessible::DefaultActionChanged

QAccessible::AcceleratorChanged

QAccessible::MenuCommand

QAccessible::NavDirection
This enum specifies which item to move to when navigating.

QAccessible::NavUp - sibling above

QAccessible::NavDown - sibling below

QAccessible::NavLeft - left sibling

QAccessible::NavRight - right sibling

QAccessible::NavNext - next sibling

QAccessible::NavPrevious - previous sibling

QAccessible::NavFirstChild - first child

QAccessible::NavLastChild - last child

QAccessible::NavFocusChild - child with focus

QAccessible::Role
This enum defines a number of roles an accessible object can have. The roles are:

QAccessible::NoRole

QAccessible::TitleBar

QAccessible::MenuBar

QAccessible::ScrollBar

QAccessible::Grip

QAccessible::Sound

QAccessible::Cursor

QAccessible::Caret

QAccessible::AlertMessage

QAccessible::Window

QAccessible::Client

QAccessible::PopupMenu

QAccessible::MenuItem

QAccessible::ToolTip

QAccessible::Application

QAccessible::Document

QAccessible::Pane

QAccessible::Chart

QAccessible::Dialog

QAccessible::Border

QAccessible::Grouping

QAccessible::Separator

QAccessible::ToolBar

QAccessible::StatusBar

QAccessible::Table

QAccessible::ColumnHeader

QAccessible::RowHeader

QAccessible::Column

QAccessible::Row

QAccessible::Cell

QAccessible::Link

QAccessible::HelpBalloon

QAccessible::Character

QAccessible::List

QAccessible::ListItem

QAccessible::Outline

QAccessible::OutlineItem

QAccessible::PageTab

QAccessible::PropertyPage

QAccessible::Indicator

QAccessible::Graphic

QAccessible::StaticText

QAccessible::EditableText

QAccessible::PushButton

QAccessible::CheckBox

QAccessible::RadioButton

QAccessible::ComboBox

QAccessible::DropLest

QAccessible::ProgressBar

QAccessible::Dial

QAccessible::HotkeyField

QAccessible::Slider

QAccessible::SpinBox

QAccessible::Diagram

QAccessible::Animation

QAccessible::Equation

QAccessible::ButtonDropDown

QAccessible::ButtonMenu

QAccessible::ButtonDropGrid

QAccessible::Whitespace

QAccessible::PageTabList

QAccessible::Clock

QAccessible::State
This enum type defines bitflags that can be combined to indicate the state of the accessible object. The values are:

QAccessible::Normal

QAccessible::Unavailable

QAccessible::Selected

QAccessible::Focused

QAccessible::Pressed

QAccessible::Checked

QAccessible::Mixed

QAccessible::ReadOnly

QAccessible::HotTracked

QAccessible::Default

QAccessible::Expanded

QAccessible::Collapsed

QAccessible::Busy

QAccessible::Floating

QAccessible::Marqueed

QAccessible::Animated

QAccessible::Invisible

QAccessible::Offscreen

QAccessible::Sizeable

QAccessible::Moveable

QAccessible::SelfVoicing

QAccessible::Focusable

QAccessible::Selectable

QAccessible::Linked

QAccessible::Traversed

QAccessible::MultiSelectable

QAccessible::ExtSelectable

QAccessible::AlertLow

QAccessible::AlertMedium

QAccessible::AlertHigh

QAccessible::Protected

QAccessible::Valid

QAccessible::Text
This enum specifies string information that an accessible object returns.

QAccessible::Name - The name of the object

QAccessible::Description - A short text describing the object

QAccessible::Value - The value of the object

QAccessible::Help - A longer text giving information about how to use the object

QAccessible::DefaultAction - The default method to interact with the object

QAccessible::Accelerator - The keyboard shortcut that executes the default action

MEMBER FUNCTION DOCUMENTATION

bool QAccessible::isActive () [static]
Returns TRUE if an accessibility implementation has been requested, during the runtime of the application, otherwise returns FALSE.

Use this function to prevent potentially expensive notifications via updateAccessibility().

QRESULT QAccessible::queryAccessibleInterface ( QObject * object, QAccessibleInterface ** iface ) [static]
Sets iface to point to the implementation of the QAccessibleInterface for object, and returns QS_OK if successfull, or sets iface to 0 and returns QE_NOCOMPONENT if no accessibility implementation for object exists.

The function uses the classname of object to find a suitable implementation. If no implementation for the object's class is available the function tries to find an implementation for the object's parent class.

This function is called to answer an accessibility client's request for object information. You should never need to call this function yourself.

void QAccessible::updateAccessibility ( QObject * object, int control, Event reason ) [static]
Notifies accessibility clients about a change in object's accessibility information.

reason specifies the cause of the change, for example, ValueChange when the position of a slider has been changed. control is the ID of the child element that has changed. When control is 0, the object itself has changed.

Call this function whenever the state of your accessible object or one of it's sub-elements has been changed either programmatically (e.g. by calling QLabel::setText()) or by user interaction.

If there are no accessibility tools listening to this event, the performance penalty for calling this function is minor, but if determining the parameters of the call is expensive you can use isActive() to avoid unnecessary performance penalties if no client is listening.

SEE ALSO
http://doc.trolltech.com/qaccessible.html http://www.trolltech.com/faq/tech.html

COPYRIGHT
Copyright 1992-2001 Trolltech AS, http://www.trolltech.com. See the license file included in the distribution for a complete license statement.

AUTHOR
Generated automatically from the source code.

BUGS
If you find a bug in Qt, please report it as described in http://doc.trolltech.com/bughowto.html. Good bug reports help us to help you. Thank you.

The definitive Qt documentation is provided in HTML format; it is located at $QTDIR/doc/html and can be read using Qt Assistant or with a web browser. This man page is provided as a convenience for those users who prefer man pages, although this format is not officially supported by Trolltech.

If you find errors in this manual page, please report them to qt-bugs@trolltech.com. Please include the name of the manual page (qaccessible.3qt) and the Qt version (3.2.1).