TQAccessible Class Reference

The TQAccessible class provides enums and static functions relating to accessibility. More...

#include <ntqaccessible.h>

Inherited by TQAccessibleInterface.

List of all member functions.

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

TQRESULT queryAccessibleInterface ( TQObject * object, TQAccessibleInterface ** iface )
void updateAccessibility ( TQObject * object, int control, Event reason )
bool isActive ()

Detailed Description

The TQAccessible class provides enums and static functions relating to accessibility.

Accessibility clients use implementations of the TQAccessibleInterface 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 TQt plugins.

Member Type Documentation

TQAccessible::Event

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

TQAccessible::SoundPlayed
TQAccessible::Alert
TQAccessible::ForegroundChanged
TQAccessible::MenuStart
TQAccessible::MenuEnd
TQAccessible::PopupMenuStart
TQAccessible::PopupMenuEnd
TQAccessible::ContextHelpStart
TQAccessible::ContextHelpEnd
TQAccessible::DragDropStart
TQAccessible::DragDropEnd
TQAccessible::DialogStart
TQAccessible::DialogEnd
TQAccessible::ScrollingStart
TQAccessible::ScrollingEnd
TQAccessible::ObjectCreated
TQAccessible::ObjectDestroyed
TQAccessible::ObjectShow
TQAccessible::ObjectHide
TQAccessible::ObjectReorder
TQAccessible::Focus
TQAccessible::Selection
TQAccessible::SelectionAdd
TQAccessible::SelectionRemove
TQAccessible::SelectionWithin
TQAccessible::StateChanged
TQAccessible::LocationChanged
TQAccessible::NameChanged
TQAccessible::DescriptionChanged
TQAccessible::ValueChanged
TQAccessible::ParentChanged
TQAccessible::HelpChanged
TQAccessible::DefaultActionChanged
TQAccessible::AcceleratorChanged
TQAccessible::MenuCommand

TQAccessible::NavDirection

This enum specifies which item to move to when navigating.

TQAccessible::NavUp - sibling above
TQAccessible::NavDown - sibling below
TQAccessible::NavLeft - left sibling
TQAccessible::NavRight - right sibling
TQAccessible::NavNext - next sibling
TQAccessible::NavPrevious - previous sibling
TQAccessible::NavFirstChild - first child
TQAccessible::NavLastChild - last child
TQAccessible::NavFocusChild - child with focus

TQAccessible::Role

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

TQAccessible::NoRole
TQAccessible::TitleBar
TQAccessible::MenuBar
TQAccessible::ScrollBar
TQAccessible::Grip
TQAccessible::Sound
TQAccessible::Cursor
TQAccessible::Caret
TQAccessible::AlertMessage
TQAccessible::Window
TQAccessible::Client
TQAccessible::PopupMenu
TQAccessible::MenuItem
TQAccessible::ToolTip
TQAccessible::Application
TQAccessible::Document
TQAccessible::Pane
TQAccessible::Chart
TQAccessible::Dialog
TQAccessible::Border
TQAccessible::Grouping
TQAccessible::Separator
TQAccessible::ToolBar
TQAccessible::StatusBar
TQAccessible::Table
TQAccessible::ColumnHeader
TQAccessible::RowHeader
TQAccessible::Column
TQAccessible::Row
TQAccessible::Cell
TQAccessible::Link
TQAccessible::HelpBalloon
TQAccessible::Character
TQAccessible::List
TQAccessible::ListItem
TQAccessible::Outline
TQAccessible::OutlineItem
TQAccessible::PageTab
TQAccessible::PropertyPage
TQAccessible::Indicator
TQAccessible::Graphic
TQAccessible::StaticText
TQAccessible::EditableText
TQAccessible::PushButton
TQAccessible::CheckBox
TQAccessible::RadioButton
TQAccessible::ComboBox
TQAccessible::DropLest
TQAccessible::ProgressBar
TQAccessible::Dial
TQAccessible::HotkeyField
TQAccessible::Slider
TQAccessible::SpinBox
TQAccessible::Diagram
TQAccessible::Animation
TQAccessible::Equation
TQAccessible::ButtonDropDown
TQAccessible::ButtonMenu
TQAccessible::ButtonDropGrid
TQAccessible::Whitespace
TQAccessible::PageTabList
TQAccessible::Clock

TQAccessible::State

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

TQAccessible::Normal
TQAccessible::Unavailable
TQAccessible::Selected
TQAccessible::Focused
TQAccessible::Pressed
TQAccessible::Checked
TQAccessible::Mixed
TQAccessible::ReadOnly
TQAccessible::HotTracked
TQAccessible::Default
TQAccessible::Expanded
TQAccessible::Collapsed
TQAccessible::Busy
TQAccessible::Floating
TQAccessible::Marqueed
TQAccessible::Animated
TQAccessible::Invisible
TQAccessible::Offscreen
TQAccessible::Sizeable
TQAccessible::Moveable
TQAccessible::SelfVoicing
TQAccessible::Focusable
TQAccessible::Selectable
TQAccessible::Linked
TQAccessible::Traversed
TQAccessible::MultiSelectable
TQAccessible::ExtSelectable
TQAccessible::AlertLow
TQAccessible::AlertMedium
TQAccessible::AlertHigh
TQAccessible::Protected
TQAccessible::Valid

TQAccessible::Text

This enum specifies string information that an accessible object returns.

TQAccessible::Name - The name of the object
TQAccessible::Description - A short text describing the object
TQAccessible::Value - The value of the object
TQAccessible::Help - A longer text giving information about how to use the object
TQAccessible::DefaultAction - The default method to interact with the object
TQAccessible::Accelerator - The keyboard shortcut that executes the default action

Member Function Documentation

bool TQAccessible::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().

TQRESULT TQAccessible::queryAccessibleInterface ( TQObject * object, TQAccessibleInterface ** iface ) `[static]`

Sets iface to point to the implementation of the TQAccessibleInterface for object, and returns TQS_OK if successfull, or sets iface to 0 and returns TQE_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 TQAccessible::updateAccessibility ( TQObject * 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 TQLabel::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.

Trademarks

TQt 3.3.8