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# Annotated Class Index

Qt's classes with brief descriptions:

Phonon::BackendCapabilities::Notifier
Phonon::AudioOutput | Used to send data to audio output devices
Phonon::Effect | Used to transform audio streams
Phonon::EffectParameter | Describes one parameter of an effect
Phonon::EffectWidget | Widget to control the parameters of an Effect
Phonon::GlobalConfig
Phonon::MediaController | Controls optional features of a media file/device
Phonon::MediaNode | The base class for all nodes in a media graph
Phonon::MediaObject | Interface for media playback
Phonon::MediaSource | Multimedia data for media objects
Phonon::ObjectDescription | Generic interface to information about Phonon objects.
Phonon::Path | Describes connections between media nodes
Phonon::SeekSlider | Slider for seeking to positions in media streams
Phonon::VideoPlayer | Used to perform playback of video
Phonon::VideoWidget | Widget that is used to display video
Phonon::VolumeSlider | Slider that is used to control the volume of an audio output device
QAbstractButton | The abstract base class of button widgets, providing functionality common to buttons
QAbstractEventDispatcher | Interface to manage Qt's event queue
QAbstractExtensionFactory | Interface for extension factories in Qt Designer
QAbstractExtensionManager | Interface for extension managers in Qt Designer
QAbstractFileEngine | Abstraction for accessing the filesystem
QAbstractFileEngineHandler | Way to register custom file engines with your application
QAbstractFileEngineIterator | Iterator interface for custom file engines
QAbstractFormBuilder | Default implementation for classes that create user interfaces at run-time
QAbstractGraphicsShapeItem | Common base for all path items
QAbstractItemDelegate | Used to display and edit data items from a model
QAbstractItemModel | The abstract interface for item model classes
QAbstractItemView | The basic functionality for item view classes
QAbstractListModel | Abstract model that can be subclassed to create one-dimensional list models
QAbstractMessageHandler | Callback interface for handling messages
QAbstractPrintDialog | Base implementation for print dialogs used to configure printers
QAbstractProxyModel | Base class for proxy item models that can do sorting, filtering or other data processing tasks
QAbstractScrollArea | Scrolling area with on-demand scroll bars
QAbstractSlider | Integer value within a range
QAbstractSocket | The base functionality common to all socket types
QAbstractSpinBox | Spinbox and a line edit to display values
QAbstractTableModel | Abstract model that can be subclassed to create table models
QAbstractTextDocumentLayout | Abstract base class used to implement custom layouts for QTextDocuments
QAbstractUriResolver | Callback interface for resolving Uniform Resource Identifiers
QAbstractXmlNodeModel | Abstract base class for modeling non-XML data to look like XML for QXmlQuery
QAbstractXmlReceiver | Callback interface for transforming the output of a QXmlQuery
QAccessible | Enums and static functions relating to accessibility
QAccessibleBridge | The base class for accessibility back-ends
QAccessibleBridgePlugin | Abstract base for accessibility bridge plugins
QAccessibleEvent | Used to query addition accessibility information about complex widgets
QAccessibleInterface | Defines an interface that exposes information about accessible objects
QAccessibleObject | Implements parts of the QAccessibleInterface for QObjects
QAccessiblePlugin | Abstract base for accessibility plugins
QAccessibleWidget | Implements the QAccessibleInterface for QWidgets
QAction | Abstract user interface action that can be inserted into widgets
QActionEvent | Event that is generated when a QAction is added, removed, or changed
QActionGroup | Groups actions together
QApplication | Manages the GUI application's control flow and main settings
QAssistantClient | Means of using Qt Assistant as an application's help tool
QAtomicInt | Platform-independent atomic operations on integers
QAtomicPointer | Template class that provides platform-independent atomic operations on pointers
QAuthenticator | Authentication object
QBasicTimer | Timer events for objects
QBitArray | Array of bits
QBitmap | Monochrome (1-bit depth) pixmaps
QBoxLayout | Lines up child widgets horizontally or vertically
QBrush | Defines the fill pattern of shapes drawn by QPainter
QBuffer | QIODevice interface for a QByteArray
QButtonGroup | Container to organize groups of button widgets
QByteArray | Array of bytes
QByteArrayMatcher | Holds a sequence of bytes that can be quickly matched in a byte array
QCDEStyle | CDE look and feel
QCache | Template class that provides a cache
QCalendarWidget | Monthly based calendar widget allowing the user to select a date
QChar | 16-bit Unicode character
QCheckBox | Checkbox with a text label
QChildEvent | Contains event parameters for child object events
QCleanlooksStyle | Widget style similar to the Clearlooks style available in GNOME
QClipboard | Access to the window system clipboard
QCloseEvent | Contains parameters that describe a close event
QColor | Colors based on RGB, HSV or CMYK values
QColorDialog | Dialog widget for specifying colors
QColormap | Maps device independent QColors to device dependent pixel values
QColumnView | Model/view implementation of a column view
QComboBox | Combined button and popup list
QCommandLinkButton | Vista style command link button
QCommonStyle | Encapsulates the common Look and Feel of a GUI
QCompleter | Completions based on an item model
QConicalGradient | Used in combination with QBrush to specify a conical gradient brush
QContextMenuEvent | Contains parameters that describe a context menu event
QCoreApplication | Event loop for console Qt applications
QCryptographicHash | Way to generate cryptographic hashes
QCursor | Mouse cursor with an arbitrary shape
QCustomRasterPaintDevice | Provided to activate hardware accelerated paint engines in Qt for Embedded Linux
QDBusAbstractAdaptor | The base class of D-Bus adaptor classes
QDBusAbstractInterface | The base class for all D-Bus interfaces in the QtDBus binding, allowing access to remote interfaces
QDBusArgument | Used to marshall and demarshall D-Bus arguments
QDBusConnection | Represents a connection to the D-Bus bus daemon
QDBusConnectionInterface | Access to the D-Bus bus daemon service
QDBusContext | Allows slots to determine the D-Bus context of the calls
QDBusError | Represents an error received from the D-Bus bus or from remote applications found in the bus
QDBusInterface | Proxy for interfaces on remote objects
QDBusMessage | Represents one message sent or received over the D-Bus bus
QDBusObjectPath | Enables the programmer to identify the
QDBusReply | Stores the reply for a method call to a remote object
QDBusServer | Peer-to-peer communication between processes on the same computer
QDBusSignature | Enables the programmer to identify the
QDBusVariant | Enables the programmer to identify the variant type provided by the D-Bus typesystem
QDataStream | Serialization of binary data to a QIODevice
QDataWidgetMapper | Mapping between a section of a data model to widgets
QDate | Date functions
QDateEdit | Widget for editing dates based on the QDateTimeEdit widget
QDateTime | Date and time functions
QDateTimeEdit | Widget for editing dates and times
QDesignerActionEditorInterface | Allows you to change the focus of Qt Designer's action editor
QDesignerContainerExtension | Allows you to add pages to a custom multi-page container in Qt Designer's workspace
QDesignerCustomWidgetCollectionInterface | Allows you to include several custom widgets in one single library
QDesignerCustomWidgetInterface | Enables Qt Designer to access and construct custom widgets
QDesignerDynamicPropertySheetExtension | Allows you to manipulate a widget's dynamic properties in Qt Designer's property editor
QDesignerFormEditorInterface | Allows you to access Qt Designer's various components
QDesignerFormWindowCursorInterface | Allows you to query and modify a form window's widget selection, and in addition modify the properties of all the form's widgets
QDesignerFormWindowInterface | Allows you to query and manipulate form windows appearing in Qt Designer's workspace
QDesignerFormWindowManagerInterface | Allows you to manipulate the collection of form windows in Qt Designer, and control Qt Designer's form editing actions
QDesignerMemberSheetExtension | Allows you to manipulate a widget's member functions which is displayed when configuring connections using Qt Designer's mode for editing signals and slots
QDesignerObjectInspectorInterface | Allows you to change the focus of Qt Designer's object inspector
QDesignerPropertyEditorInterface | Allows you to query and manipulate the current state of Qt Designer's property editor
QDesignerPropertySheetExtension | Allows you to manipulate a widget's properties which is displayed in Qt Designer's property editor
QDesignerTaskMenuExtension | Allows you to add custom menu entries to Qt Designer's task menu
QDesignerWidgetBoxInterface | Allows you to control the contents of Qt Designer's widget box
QDesktopServices | Methods for accessing common desktop services
QDesktopWidget | Access to screen information on multi-head systems
QDial | Rounded range control (like a speedometer or potentiometer)
QDialog | The base class of dialog windows
QDialogButtonBox | Widget that presents buttons in a layout that is appropriate to the current widget style
QDir | Access to directory structures and their contents
QDirIterator | Iterator for directory entrylists
QDirModel | Data model for the local filesystem
QDockWidget | Widget that can be docked inside a QMainWindow or floated as a top-level window on the desktop
QDomAttr | Represents one attribute of a QDomElement
QDomCDATASection | Represents an XML CDATA section
QDomCharacterData | Represents a generic string in the DOM
QDomComment | Represents an XML comment
QDomDocument | Represents an XML document
QDomDocumentFragment | Tree of QDomNodes which is not usually a complete QDomDocument
QDomDocumentType | The representation of the DTD in the document tree
QDomElement | Represents one element in the DOM tree
QDomEntity | Represents an XML entity
QDomEntityReference | Represents an XML entity reference
QDomImplementation | Information about the features of the DOM implementation
QDomNamedNodeMap | Contains a collection of nodes that can be accessed by name
QDomNode | The base class for all the nodes in a DOM tree
QDomNodeList | List of QDomNode objects
QDomNotation | Represents an XML notation
QDomProcessingInstruction | Represents an XML processing instruction
QDomText | Represents text data in the parsed XML document
QDoubleSpinBox | Spin box widget that takes doubles
QDoubleValidator | Range checking of floating-point numbers
QDrag | Support for MIME-based drag and drop data transfer
QDragEnterEvent | Event which is sent to a widget when a drag and drop action enters it
QDragLeaveEvent | Event that is sent to a widget when a drag and drop action leaves it
QDragMoveEvent | Event which is sent while a drag and drop action is in progress
QDropEvent | Event which is sent when a drag and drop action is completed
QDynamicPropertyChangeEvent | Contains event parameters for dynamic property change events
QErrorMessage | Error message display dialog
QEvent | The base class of all event classes. Event objects contain event parameters
QEventLoop | Means of entering and leaving an event loop
QExplicitlySharedDataPointer | Represents a pointer to an explicitly shared object
QExtensionFactory | Allows you to create a factory that is able to make instances of custom extensions in Qt Designer
QExtensionManager | Extension management facilities for Qt Designer
QFSFileEngine | Implements Qt's default file engine
QFile | Interface for reading from and writing to files
QFileDialog | Dialog that allow users to select files or directories
QFileIconProvider | File icons for the QDirModel class
QFileInfo | System-independent file information
QFileOpenEvent | Event that will be sent when there is a request to open a file
QFileSystemModel | Data model for the local filesystem
QFileSystemWatcher | Interface for monitoring files and directories for modifications
QFlag | Helper data type for QFlags
QFlags | Type-safe way of storing OR-combinations of enum values
QFocusEvent | Contains event parameters for widget focus events
QFocusFrame | Focus frame which can be outside of a widget's normal paintable area
QFont | Specifies a font used for drawing text
QFontComboBox | Combobox that lets the user select a font family
QFontDatabase | Information about the fonts available in the underlying window system
QFontDialog | Dialog widget for selecting a font
QFontInfo | General information about fonts
QFontMetrics | Font metrics information
QFontMetricsF | Font metrics information
QFormBuilder | Used to dynamically construct user interfaces from .ui files at run-time
QFormLayout | Manages forms of input widgets and their associated labels
QFrame | The base class of widgets that can have a frame
QFtp | Implementation of the client side of FTP protocol
QFuture | Represents the result of an asynchronous computation
QFutureIterator | Java-style const iterator for QFuture
QFutureSynchronizer | Convenience class that simplifies QFuture synchronization
QFutureWatcher | Allows monitoring a QFuture using signals and slots
QGLColormap | Used for installing custom colormaps into QGLWidgets
QGLContext | Encapsulates an OpenGL rendering context
QGLFormat | Specifies the display format of an OpenGL rendering context
QGLFramebufferObject | Encapsulates an OpenGL framebuffer object
QGLPixelBuffer | Encapsulates an OpenGL pbuffer
QGLWidget | Widget for rendering OpenGL graphics
QGenericArgument | Internal helper class for marshalling arguments
QGenericReturnArgument | Internal helper class for marshalling arguments
QGradient | Used in combination with QBrush to specify gradient fills
QGraphicsEllipseItem | Ellipse item that you can add to a QGraphicsScene
QGraphicsGridLayout | Grid layout for managing widgets in Graphics View
QGraphicsItem | The base class for all graphical items in a QGraphicsScene
QGraphicsItemAnimation | Simple animation support for QGraphicsItem
QGraphicsItemGroup | Treating a group of items as one
QGraphicsLayout | The base class for all layouts in Graphics View
QGraphicsLayoutItem | Can be inherited to allow your custom items to be managed by layouts
QGraphicsLineItem | Line item that you can add to a QGraphicsScene
QGraphicsLinearLayout | Horizontal or vertical layout for managing widgets in Graphics View
QGraphicsPathItem | Path item that you can add to a QGraphicsScene
QGraphicsPixmapItem | Pixmap item that you can add to a QGraphicsScene
QGraphicsPolygonItem | Polygon item that you can add to a QGraphicsScene
QGraphicsProxyWidget | Proxy layer for embedding a QWidget in a QGraphicsScene
QGraphicsRectItem | Rectangle item that you can add to a QGraphicsScene
QGraphicsScene | Surface for managing a large number of 2D graphical items
QGraphicsSceneContextMenuEvent | Context menu events in the graphics view framework
QGraphicsSceneDragDropEvent | Events for drag and drop in the graphics view framework
QGraphicsSceneEvent | Base class for all graphics view related events
QGraphicsSceneHelpEvent | Events when a tooltip is requested
QGraphicsSceneHoverEvent | Hover events in the graphics view framework
QGraphicsSceneMouseEvent | Mouse events in the graphics view framework
QGraphicsSceneMoveEvent | Events for widget moving in the graphics view framework
QGraphicsSceneResizeEvent | Events for widget resizing in the graphics view framework
QGraphicsSceneWheelEvent | Wheel events in the graphics view framework
QGraphicsSimpleTextItem | Simple text path item that you can add to a QGraphicsScene
QGraphicsSvgItem | QGraphicsItem that can be used to render the contents of SVG files
QGraphicsTextItem | Text item that you can add to a QGraphicsScene to display formatted text
QGraphicsView | Widget for displaying the contents of a QGraphicsScene
QGraphicsWidget | The base class for all widget items in a QGraphicsScene
QGridLayout | Lays out widgets in a grid
QGroupBox | Group box frame with a title
QHBoxLayout | Lines up widgets horizontally
QHash | Template class that provides a hash-table-based dictionary
QHashIterator | Java-style const iterator for QHash and QMultiHash
QHeaderView | Header row or header column for item views
QHelpContentItem | Item for use with QHelpContentModel
QHelpContentModel | Model that supplies content to views
QHelpContentWidget | Tree view for displaying help content model items
QHelpEngine | Access to contents and indices of the help engine
QHelpEngineCore | The core functionality of the help system
QHelpEvent | Event that is used to request helpful information about a particular point in a widget
QHelpIndexModel | Model that supplies index keywords to views
QHelpIndexWidget | List view displaying the QHelpIndexModel
QHelpSearchEngine | Access to widgets reusable to integrate fulltext search as well as to index and search documentation
QHelpSearchQuery | Contains the field name and the associated search term
QHelpSearchQueryWidget | Simple line edit or an advanced widget to enable the user to input a search term in a standardized input mask
QHelpSearchResultWidget | Either a tree widget or a text browser depending on the used search engine to display the hits found by the search
QHideEvent | Event which is sent after a widget is hidden
QHostAddress | IP address
QHostInfo | Static functions for host name lookups
QHoverEvent | Contains parameters that describe a mouse event
QHttp | Implementation of the HTTP protocol
QHttpHeader | Contains header information for HTTP
QHttpRequestHeader | Contains request header information for HTTP
QHttpResponseHeader | Contains response header information for HTTP
QIODevice | The base interface class of all I/O devices in Qt
QIcon | Scalable icons in different modes and states
QIconDragEvent | Indicates that a main icon drag has begun
QIconEngine | Abstract base class for QIcon renderers
QIconEnginePlugin | Abstract base for custom QIconEngine plugins
QIconEnginePluginV2 | Abstract base for custom QIconEngineV2 plugins
QIconEngineV2 | Abstract base class for QIcon renderers
QImage | Hardware-independent image representation that allows direct access to the pixel data, and can be used as a paint device
QImageIOHandler | Defines the common image I/O interface for all image formats in Qt
QImageIOPlugin | Defines an interface for writing an image format plugin
QImageReader | Format independent interface for reading images from files or other devices
QImageWriter | Format independent interface for writing images to files or other devices
QInputContext | Abstracts the input method dependent data and composing state
QInputContextFactory | Creates QInputContext objects
QInputContextPlugin | Abstract base for custom QInputContext plugins
QInputDialog | Simple convenience dialog to get a single value from the user
QInputEvent | The base class for events that describe user input
QInputMethodEvent | Parameters for input method events
QIntValidator | Validator that ensures a string contains a valid integer within a specified range
QItemDelegate | Display and editing facilities for data items from a model
QItemEditorCreator | Makes it possible to create item editor creator bases without subclassing QItemEditorCreatorBase
QItemEditorCreatorBase | Abstract base class that must be subclassed when implementing new item editor creators
QItemEditorFactory | Widgets for editing item data in views and delegates
QItemSelection | Manages information about selected items in a model
QItemSelectionModel | Keeps track of a view's selected items
QItemSelectionRange | Manages information about a range of selected items in a model
QKeyEvent | Describes a key event
QKeySequence | Encapsulates a key sequence as used by shortcuts
QLCDNumber | Displays a number with LCD-like digits
QLabel | Text or image display
QLatin1Char | 8-bit ASCII/Latin-1 character
QLatin1String | Thin wrapper around an ASCII/Latin-1 encoded string literal
QLayout | The base class of geometry managers
QLayoutItem | Abstract item that a QLayout manipulates
QLibrary | Loads shared libraries at runtime
QLibraryInfo | Information about the Qt library
QLine | Two-dimensional vector using integer precision
QLineEdit | One-line text editor
QLineF | Two-dimensional vector using floating point precision
QLinearGradient | Used in combination with QBrush to specify a linear gradient brush
QLinkedList | Template class that provides linked lists
QLinkedListIterator | Java-style const iterator for QLinkedList
QList | Template class that provides lists
QListIterator | Java-style const iterator for QList and QQueue
QListView | List or icon view onto a model
QListWidget | Item-based list widget
QListWidgetItem | Item for use with the QListWidget item view class
QLocalServer | Local socket based server
QLocalSocket | Local socket
QLocale | Converts between numbers and their string representations in various languages
QMainWindow | Main application window
QMap | Template class that provides a skip-list-based dictionary
QMapIterator | Java-style const iterator for QMap and QMultiMap
QMatrix | Specifies 2D transformations of a coordinate system
QMdiArea | Area in which MDI windows are displayed
QMdiSubWindow | Subwindow class for QMdiArea
QMenu | Menu widget for use in menu bars, context menus, and other popup menus
QMenuBar | Horizontal menu bar
QMessageBox | Modal dialog for informing the user or for asking the user a question and receiving an answer
QMetaClassInfo | Additional information about a class
QMetaEnum | Meta-data about an enumerator
QMetaMethod | Meta-data about a member function
QMetaObject | Contains meta-information about Qt objects
QMetaProperty | Meta-data about a property
QMetaType | Manages named types in the meta-object system
QMimeData | Container for data that records information about its MIME type
QMimeSource | Abstraction of objects that provided formatted data of a certain MIME type
QModelIndex | Used to locate data in a data model
QMotifStyle | Motif look and feel
QMouseEvent | Contains parameters that describe a mouse event
QMoveEvent | Contains event parameters for move events
QMovie | Convenience class for playing movies with QImageReader
QMultiHash | Convenience QHash subclass that provides multi-valued hashes
QMultiMap | Convenience QMap subclass that provides multi-valued maps
QMutableHashIterator | Java-style non-const iterator for QHash and QMultiHash
QMutableLinkedListIterator | Java-style non-const iterator for QLinkedList
QMutableListIterator | Java-style non-const iterator for QList and QQueue
QMutableMapIterator | Java-style non-const iterator for QMap and QMultiMap
QMutableSetIterator | Java-style non-const iterator for QSet
QMutableVectorIterator | Java-style non-const iterator for QVector and QStack
QMutex | Access serialization between threads
QMutexLocker | Convenience class that simplifies locking and unlocking mutexes
QNetworkAccessManager | Allows the application to post network requests and receive replies
QNetworkAddressEntry | Stores one IP address supported by a network interface, along with its associated netmask and broadcast address
QNetworkCookie | Holds one network cookie
QNetworkCookieJar | Implements a simple jar of QNetworkCookie objects
QNetworkInterface | Listing of the host's IP addresses and network interfaces
QNetworkProxy | Network layer proxy
QNetworkReply | Contains the data and headers for a request posted with QNetworkAccessManager
QNetworkRequest | Holds one request to be sent with the Network Access API
QObject | The base class of all Qt objects
QObjectCleanupHandler | Watches the lifetime of multiple QObjects
QPaintDevice | The base class of objects that can be painted
QPaintEngine | Abstract definition of how QPainter draws to a given device on a given platform
QPaintEngineState | Information about the active paint engine's current state
QPaintEvent | Contains event parameters for paint events
QPainter | Performs low-level painting on widgets and other paint devices
QPainterPath | Container for painting operations, enabling graphical shapes to be constructed and reused
QPainterPathStroker | Used to generate fillable outlines for a given painter path
QPair | Template class that stores a pair of items
QPalette | Contains color groups for each widget state
QPen | Defines how a QPainter should draw lines and outlines of shapes
QPersistentModelIndex | Used to locate data in a data model
QPicture | Paint device that records and replays QPainter commands
QPictureFormatPlugin | Abstract base for custom picture format plugins
QPictureIO | Contains parameters for loading and saving pictures
QPixmap | Off-screen image representation that can be used as a paint device
QPixmapCache | Application-wide cache for pixmaps
QPlainTextDocumentLayout | Implements a plain text layout for QTextDocument
QPlainTextEdit | Widget that is used to edit and display plain text
QPlastiqueStyle | Widget style similar to the Plastik style available in KDE
QPluginLoader | Loads a plugin at run-time
QPoint | Defines a point in the plane using integer precision
QPointF | Defines a point in the plane using floating point precision
QPointer | Template class that provides guarded pointers to QObjects
QPolygon | Vector of points using integer precision
QPolygonF | Vector of points using floating point precision
QPrintDialog | Dialog for specifying the printer's configuration
QPrintEngine | Defines an interface for how QPrinter interacts with a given printing subsystem
QPrintPreviewDialog | Dialog for previewing and configuring page layouts for printer output
QPrintPreviewWidget | Widget for previewing page layouts for printer output
QPrinter | Paint device that paints on a printer
QPrinterInfo | Gives access to information about existing printers
QProcess | Used to start external programs and to communicate with them
QProgressBar | Horizontal or vertical progress bar
QProgressDialog | Feedback on the progress of a slow operation
QProxyModel | Support for processing data passed between another model and a view
QPushButton | Command button
QQueue | Generic container that provides a queue
QRadialGradient | Used in combination with QBrush to specify a radial gradient brush
QRadioButton | Radio button with a text label
QRasterPaintEngine | Enables hardware acceleration of painting operations in Qt for Embedded Linux
QReadLocker | Convenience class that simplifies locking and unlocking read-write locks for read access
QReadWriteLock | Read-write locking
QRect | Defines a rectangle in the plane using integer precision
QRectF | Defines a rectangle in the plane using floating point precision
QRegExp | Pattern matching using regular expressions
QRegExpValidator | Used to check a string against a regular expression
QRegion | Specifies a clip region for a painter
QResizeEvent | Contains event parameters for resize events
QResource | Interface for reading directly from resources
QRubberBand | Rectangle or line that can indicate a selection or a boundary
QRunnable | The base class for all runnable objects
QScriptClass | Interface for defining custom behavior of (a class of) Qt Script objects
QScriptClassPropertyIterator | Iterator interface for custom Qt Script objects
QScriptContext | Represents a Qt Script function invocation
QScriptContextInfo | Additional information about a QScriptContext
QScriptEngine | Environment for evaluating Qt Script code
QScriptEngineAgent | Interface to report events pertaining to QScriptEngine execution
QScriptExtensionPlugin | Abstract base for custom QScript extension plugins
QScriptString | Acts as a handle to "interned" strings in a QScriptEngine
QScriptValue | Acts as a container for the Qt Script data types
QScriptValueIterator | Java-style iterator for QScriptValue
QScriptable | Access to the Qt Script environment from Qt C++ member functions
QScrollArea | Scrolling view onto another widget
QScrollBar | Vertical or horizontal scroll bar
QSemaphore | General counting semaphore
QSessionManager | Access to the session manager
QSet | Template class that provides a hash-table-based set
QSetIterator | Java-style const iterator for QSet
QSettings | Persistent platform-independent application settings
QSharedData | Base class for shared data objects
QSharedDataPointer | Represents a pointer to an implicitly shared object
QSharedMemory | Access to a shared memory segment
QShortcut | Used to create keyboard shortcuts
QShortcutEvent | Event which is generated when the user presses a key combination
QShowEvent | Event that is sent when a widget is shown
QSignalMapper | Bundles signals from identifiable senders
QSignalSpy | Enables introspection of signal emission
QSimpleXmlNodeModel | Implementation of QAbstractXmlNodeModel sufficient for many common cases
QSize | Defines the size of a two-dimensional object using integer point precision
QSizeF | Defines the size of a two-dimensional object using floating point precision
QSizeGrip | Resize handle for resizing top-level windows
QSizePolicy | Layout attribute describing horizontal and vertical resizing policy
QSlider | Vertical or horizontal slider
QSocketNotifier | Support for monitoring activity on a file descriptor
QSortFilterProxyModel | Support for sorting and filtering data passed between another model and a view
QSound | Access to the platform audio facilities
QSourceLocation | Identifies a location in a resource by URI, line, and column
QSpacerItem | Blank space in a layout
QSpinBox | Spin box widget
QSplashScreen | Splash screen that can be shown during application startup
QSplitter | Implements a splitter widget
QSplitterHandle | Handle functionality of the splitter
QSqlDatabase | Represents a connection to a database
QSqlDriver | Abstract base class for accessing specific SQL databases
QSqlDriverCreator | Template class that provides a SQL driver factory for a specific driver type
QSqlDriverCreatorBase | The base class for SQL driver factories
QSqlDriverPlugin | Abstract base for custom QSqlDriver plugins
QSqlError | SQL database error information
QSqlField | Manipulates the fields in SQL database tables and views
QSqlIndex | Functions to manipulate and describe database indexes
QSqlQuery | Means of executing and manipulating SQL statements
QSqlQueryModel | Read-only data model for SQL result sets
QSqlRecord | Encapsulates a database record
QSqlRelation | Stores information about an SQL foreign key
QSqlRelationalDelegate | Delegate that is used to display and edit data from a QSqlRelationalTableModel
QSqlRelationalTableModel | Editable data model for a single database table, with foreign key support
QSqlResult | Abstract interface for accessing data from specific SQL databases
QSqlTableModel | Editable data model for a single database table
QSslCertificate | Convenient API for an X509 certificate
QSslCipher | Represents an SSL cryptographic cipher
QSslConfiguration | Holds the configuration and state of an SSL connection
QSslError | SSL error
QSslKey | Interface for private and public keys
QSslSocket | SSL encrypted socket for both clients and servers
QStack | Template class that provides a stack
QStackedLayout | Stack of widgets where only one widget is visible at a time
QStackedWidget | Stack of widgets where only one widget is visible at a time
QStandardItem | Item for use with the QStandardItemModel class
QStandardItemEditorCreator | The possibility to register widgets without having to subclass QItemEditorCreatorBase
QStandardItemModel | Generic model for storing custom data
QStatusBar | Horizontal bar suitable for presenting status information
QStatusTipEvent | Event that is used to show messages in a status bar
QString | Unicode character string
QStringList | List of strings
QStringListModel | Model that supplies strings to views
QStringMatcher | Holds a sequence of characters that can be quickly matched in a Unicode string
QStringRef | Thin wrapper around QString substrings
QStyle | Abstract base class that encapsulates the look and feel of a GUI
QStyleFactory | Creates QStyle objects
QStyleHintReturn | Style hints that return more than basic data types
QStyleHintReturnMask | Style hints that return a QRegion
QStyleHintReturnVariant | Style hints that return a QVariant
QStyleOption | Stores the parameters used by QStyle functions
QStyleOptionButton | Used to describe the parameters for drawing buttons
QStyleOptionComboBox | Used to describe the parameter for drawing a combobox
QStyleOptionComplex | Used to hold parameters that are common to all complex controls
QStyleOptionDockWidget | Used to describe the parameters for drawing a dock widget
QStyleOptionFocusRect | Used to describe the parameters for drawing a focus rectangle with QStyle
QStyleOptionFrame | Used to describe the parameters for drawing a frame
QStyleOptionFrameV2 | Used to describe the parameters necessary for drawing a frame in Qt 4.1 or above
QStyleOptionGraphicsItem | Used to describe the parameters needed to draw a QGraphicsItem
QStyleOptionGroupBox | Describes the parameters for drawing a group box
QStyleOptionHeader | Used to describe the parameters for drawing a header
QStyleOptionMenuItem | Used to describe the parameter necessary for drawing a menu item
QStyleOptionProgressBar | Used to describe the parameters necessary for drawing a progress bar
QStyleOptionProgressBarV2 | Used to describe the parameters necessary for drawing a progress bar in Qt 4.1 or above
QStyleOptionQ3DockWindow | Used to describe the parameters for drawing various parts of a
QStyleOptionQ3ListView | Used to describe the parameters for drawing a Q3ListView
QStyleOptionQ3ListViewItem | Used to describe an item drawn in a Q3ListView
QStyleOptionRubberBand | Used to describe the parameters needed for drawing a rubber band
QStyleOptionSizeGrip | Used to describe the parameter for drawing a size grip
QStyleOptionSlider | Used to describe the parameters needed for drawing a slider
QStyleOptionSpinBox | Used to describe the parameters necessary for drawing a spin box
QStyleOptionTab | Used to describe the parameters for drawing a tab bar
QStyleOptionTabBarBase | Used to describe the base of a tab bar, i.e. the part that the tab bar usually overlaps with
QStyleOptionTabV2 | Used to describe the parameters necessary for drawing a tabs in Qt 4.1 or above
QStyleOptionTabWidgetFrame | Used to describe the parameters for drawing the frame around a tab widget
QStyleOptionTitleBar | Used to describe the parameters for drawing a title bar
QStyleOptionToolBar | Used to describe the parameters for drawing a toolbar
QStyleOptionToolBox | Used to describe the parameters needed for drawing a tool box
QStyleOptionToolBoxV2 | Used to describe the parameters necessary for drawing a frame in Qt 4.3 or above
QStyleOptionToolButton | Used to describe the parameters for drawing a tool button
QStyleOptionViewItem | Used to describe the parameters used to draw an item in a view widget
QStyleOptionViewItemV2 | Used to describe the parameters necessary for drawing a frame in Qt 4.2 or above
QStyleOptionViewItemV4 | Used to describe the parameters necessary for drawing a frame in Qt 4.4 or above
QStylePainter | Convenience class for drawing QStyle elements inside a widget
QStylePlugin | Abstract base for custom QStyle plugins
QStyledItemDelegate | Display and editing facilities for data items from a model
QSvgGenerator | Paint device that is used to create SVG drawings
QSvgRenderer | Used to draw the contents of SVG files onto paint devices
QSvgWidget | Widget that is used to display the contents of Scalable Vector Graphics (SVG) files
QSyntaxHighlighter | Allows you to define syntax highlighting rules, and in addition you can use the class to query a document's current formatting or user data
QSysInfo | Information about the system
QSystemLocale | Can be used to finetune the system locale of the user
QSystemSemaphore | General counting system semaphore
QSystemTrayIcon | Icon for an application in the system tray
QTabBar | Tab bar, e.g. for use in tabbed dialogs
QTabWidget | Stack of tabbed widgets
QTableView | Default model/view implementation of a table view
QTableWidget | Item-based table view with a default model
QTableWidgetItem | Item for use with the QTableWidget class
QTableWidgetSelectionRange | Way to interact with selection in a model without using model indexes and a selection model
QTabletEvent | Contains parameters that describe a Tablet event
QTcpServer | TCP-based server
QTcpSocket | TCP socket
QTemporaryFile | I/O device that operates on temporary files
QTestEventList | List of GUI events
QTextBlock | Container for text fragments in a QTextDocument
QTextBlockFormat | Formatting information for blocks of text in a QTextDocument
QTextBlockGroup | Container for text blocks within a QTextDocument
QTextBlockUserData | Used to associate custom data with blocks of text
QTextBoundaryFinder | Way of finding Unicode text boundaries in a string
QTextBrowser | Rich text browser with hypertext navigation
QTextCharFormat | Formatting information for characters in a QTextDocument
QTextCodec | Conversions between text encodings
QTextCodecPlugin | Abstract base for custom QTextCodec plugins
QTextCursor | Offers an API to access and modify QTextDocuments
QTextDecoder | State-based decoder
QTextDocument | Holds formatted text that can be viewed and edited using a QTextEdit
QTextDocumentFragment | Represents a piece of formatted text from a QTextDocument
QTextEdit | Widget that is used to edit and display both plain and rich text
QTextEncoder | State-based encoder
QTextFormat | Formatting information for a QTextDocument
QTextFragment | Holds a piece of text in a QTextDocument with a single QTextCharFormat
QTextFrame | Represents a frame in a QTextDocument
QTextFrameFormat | Formatting information for frames in a QTextDocument
QTextImageFormat | Formatting information for images in a QTextDocument
QTextInlineObject | Represents an inline object in a QTextLayout
QTextItem | All the information required to draw text in a custom paint engine
QTextLayout | Used to lay out and paint a single paragraph of text
QTextLength | Encapsulates the different types of length used in a QTextDocument
QTextLine | Represents a line of text inside a QTextLayout
QTextList | Decorated list of items in a QTextDocument
QTextListFormat | Formatting information for lists in a QTextDocument
QTextObject | Base class for different kinds of objects that can group parts of a QTextDocument together
QTextOption | Description of general rich text properties
QTextStream | Convenient interface for reading and writing text
QTextTable | Represents a table in a QTextDocument
QTextTableCell | Represents the properties of a cell in a QTextTable
QTextTableCellFormat | Formatting information for table cells in a QTextDocument
QTextTableFormat | Formatting information for tables in a QTextDocument
QThread | Platform-independent threads
QThreadPool | Manages a collection of QThreads
QThreadStorage | Per-thread data storage
QTime | Clock time functions
QTimeEdit | Widget for editing times based on the QDateTimeEdit widget
QTimeLine | Timeline for controlling animations
QTimer | Repetitive and single-shot timers
QTimerEvent | Contains parameters that describe a timer event
QToolBar | Movable panel that contains a set of controls
QToolBox | Column of tabbed widget items
QToolButton | Quick-access button to commands or options, usually used inside a QToolBar
QToolTip | Tool tips (balloon help) for any widget
QTransform | Specifies 2D transformations of a coordinate system
QTranslator | Internationalization support for text output
QTreeView | Default model/view implementation of a tree view
QTreeWidget | Tree view that uses a predefined tree model
QTreeWidgetItem | Item for use with the QTreeWidget convenience class
QTreeWidgetItemIterator | Way to iterate over the items in a QTreeWidget instance
QUdpSocket | UDP socket
QUiLoader | Allows standalone applications dynamically create user interfaces at run-time using the information stored in .ui files or specified plugin paths
QUndoCommand | The base class of all commands stored on a QUndoStack
QUndoGroup | Group of QUndoStack objects
QUndoStack | Stack of QUndoCommand objects
QUndoView | Displays the contents of a QUndoStack
QUrl | Convenient interface for working with URLs
QUrlInfo | Stores information about URLs
QUuid | Stores a Universally Unique Identifier (UUID)
QVBoxLayout | Lines up widgets vertically
QValidator | Validation of input text
QVarLengthArray | Low-level variable-length array
QVariant | Acts like a union for the most common Qt data types
QVector | Template class that provides a dynamic array
QVectorIterator | Java-style const iterator for QVector and QStack
QWaitCondition | Condition variable for synchronizing threads
QWebFrame | Represents a frame in a web page
QWebHistory | Represents the history of a QWebPage
QWebHistoryInterface | Interface to implement link history
QWebHistoryItem | Represents one item in the history of a QWebPage
QWebHitTestResult | Information about the web page content after a hit test
QWebPage | Object to view and edit web documents
QWebPluginFactory | Creates plugins to be embedded into web pages
QWebSettings | Object to store the settings used by QWebPage and QWebFrame
QWebView | Widget that is used to view and edit web documents
QWhatsThis | Simple description of any widget, i.e. answering the question "What's This?"
QWhatsThisClickedEvent | Event that can be used to handle hyperlinks in a "What's This?" text
QWheelEvent | Contains parameters that describe a wheel event
QWidget | The base class of all user interface objects
QWidgetAction | Extends QAction by an interface for inserting custom widgets into action based containers, such as toolbars
QWidgetItem | Layout item that represents a widget
QWindowStateChangeEvent | The window state before a window state change
QWindowsMime | Maps open-standard MIME to Window Clipboard formats
QWindowsStyle | Microsoft Windows-like look and feel
QWindowsVistaStyle | Look and feel suitable for applications on Microsoft Windows Vista
QWindowsXPStyle | Microsoft Windows XP-like look and feel
QWizard | Framework for wizards
QWizardPage | The base class for wizard pages
QWorkspace | Workspace window that can be used in an MDI application
QWriteLocker | Convenience class that simplifies locking and unlocking read-write locks for write access
QXmlAttributes | XML attributes
QXmlContentHandler | Interface to report the logical content of XML data
QXmlDTDHandler | Interface to report DTD content of XML data
QXmlDeclHandler | Interface to report declaration content of XML data
QXmlDefaultHandler | Default implementation of all the XML handler classes
QXmlEntityResolver | Interface to resolve external entities contained in XML data
QXmlErrorHandler | Interface to report errors in XML data
QXmlFormatter | Implementation of QXmlSerializer for transforming XQuery output into formatted XML
QXmlInputSource | The input data for the QXmlReader subclasses
QXmlItem | Contains either an XML node or an atomic value
QXmlLexicalHandler | Interface to report the lexical content of XML data
QXmlLocator | The XML handler classes with information about the parsing position within a file
QXmlName | Represents the name of an XML node, in an efficient, namespace-aware way
QXmlNamePool | Table of shared strings referenced by instances of QXmlName
QXmlNamespaceSupport | Helper class for XML readers which want to include namespace support
QXmlNodeModelIndex | Identifies a node in an XML node model subclassed from QAbstractXmlNodeModel
QXmlParseException | Used to report errors with the QXmlErrorHandler interface
QXmlQuery | Performs XQueries on XML data, or on non-XML data modeled to look like XML
QXmlReader | Interface for XML readers (i.e. parsers)
QXmlResultItems | Iterates through the results of evaluating an XQuery in QXmlQuery
QXmlSerializer | Implementation of QAbstractXmlReceiver for transforming XQuery output into unformatted XML
QXmlSimpleReader | Implementation of a simple XML parser
QXmlStreamAttribute | Represents a single XML attribute
QXmlStreamAttributes | Represents a vector of QXmlStreamAttribute
QXmlStreamEntityDeclaration | Represents a DTD entity declaration
QXmlStreamEntityResolver | Entity resolver for a QXmlStreamReader
QXmlStreamNamespaceDeclaration | Represents a namespace declaration
QXmlStreamNotationDeclaration | Represents a DTD notation declaration
QXmlStreamReader | Fast well-formed XML parser with a simple streaming API
QXmlStreamWriter | XML writer with a simple streaming API
QtConcurrent::Exception | Base class for exceptions that can transferred across threads
QtConcurrent::UnhandledException | Represents an unhandled exception in a worker thread