Qt 4.2: Qt Desktop Edition Classes

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# Qt Desktop Edition Classes

Q3Accel | Handles keyboard accelerator and shortcut keys
Q3Action | Abstract user interface action that can appear both in menus and tool bars
Q3ActionGroup | Groups actions together
Q3AsciiCache | Template class that provides a cache based on char* keys
Q3AsciiCacheIterator | Iterator for Q3AsciiCache collections
Q3AsciiDict | Template class that provides a dictionary based on char* keys
Q3AsciiDictIterator | Iterator for Q3AsciiDict collections
Q3Button | Compatibility base class of button widgets
Q3ButtonGroup | Organizes QAbstractButton widgets in a group
Q3CString | Abstraction of the classic C zero-terminated char array (char *)
Q3Cache | Template class that provides a cache based on QString keys
Q3CacheIterator | Iterator for Q3Cache collections
Q3Canvas | 2D area that can contain Q3CanvasItem objects
Q3CanvasEllipse | Ellipse or ellipse segment on a Q3Canvas
Q3CanvasItem | Abstract graphic object on a Q3Canvas
Q3CanvasItemList | List of Q3CanvasItems
Q3CanvasLine | Line on a Q3Canvas
Q3CanvasPixmap | Pixmaps for Q3CanvasSprites
Q3CanvasPixmapArray | Array of Q3CanvasPixmaps
Q3CanvasPolygon | Polygon on a Q3Canvas
Q3CanvasPolygonalItem | Polygonal canvas item on a Q3Canvas
Q3CanvasRectangle | Rectangle on a Q3Canvas
Q3CanvasSpline | Multi-bezier splines on a Q3Canvas
Q3CanvasSprite | Animated canvas item on a Q3Canvas
Q3CanvasText | Text object on a Q3Canvas
Q3CanvasView | On-screen view of a Q3Canvas
Q3CheckListItem | Checkable list view items
Q3CheckTableItem | Checkboxes in Q3Tables
Q3ColorDrag | Drag and drop object for transferring colors between widgets
Q3ComboBox | Combined button and popup list
Q3ComboTableItem | Means of using comboboxes in Q3Tables
Q3DataBrowser | Data manipulation and navigation for data entry forms
Q3DataTable | Flexible SQL table widget that supports browsing and editing
Q3DataView | Read-only SQL forms
Q3DateEdit | Date editor
Q3DateTimeEdit | Combines a Q3DateEdit and Q3TimeEdit widget into a single widget for editing datetimes
Q3DateTimeEditBase | Abstraction for date and edit editors
Q3DeepCopy | Template class which ensures that implicitly shared and explicitly shared classes reference unique data
Q3Dict | Template class that provides a dictionary based on QString keys
Q3DictIterator | Iterator for Q3Dict collections
Q3Dns | Asynchronous DNS lookups
Q3DockArea | Manages and lays out Q3DockWindows
Q3DockWindow | Widget which can be docked inside a Q3DockArea or floated as a top level window on the desktop
Q3DragObject | Encapsulates MIME-based data transfer
Q3DropSite | Nothing and does nothing
Q3EditorFactory | Used to create editor widgets for QVariant data types
Q3FileDialog | Dialogs that allow users to select files or directories
Q3FileIconProvider | Icons for Q3FileDialog to use
Q3FilePreview | File previewing in Q3FileDialog
Q3Frame
Q3Ftp | Implementation of the FTP protocol
Q3Grid | Simple geometry management of its children
Q3GridView | Abstract base for fixed-size grids
Q3GroupBox | Group box frame with a title
Q3HBox | Horizontal geometry management for its child widgets
Q3HButtonGroup | Organizes button widgets in a group with one horizontal row
Q3HGroupBox | Organizes widgets in a group with one horizontal row
Q3Header | Header row or column, e.g. for tables and listviews
Q3Http | Implementation of the HTTP protocol
Q3HttpHeader | Header information for HTTP
Q3HttpRequestHeader | Request header information for HTTP
Q3HttpResponseHeader | Response header information for HTTP
Q3IconDrag | Supports drag and drop operations within a Q3IconView
Q3IconDragItem | Encapsulates a drag item
Q3IconView | Area with movable labelled icons
Q3IconViewItem | Single item in a Q3IconView
Q3ImageDrag | Drag and drop object for transferring images
Q3IntCache | Template class that provides a cache based on long keys
Q3IntCacheIterator | Iterator for Q3IntCache collections
Q3IntDict | Template class that provides a dictionary based on long keys
Q3IntDictIterator | Iterator for Q3IntDict collections
Q3ListBox | List of selectable, read-only items
Q3ListBoxItem | The base class of all list box items
Q3ListBoxPixmap | List box items with a pixmap and optional text
Q3ListBoxText | List box items that display text
Q3ListView | Implements a list/tree view
Q3ListViewItem | Implements a list view item
Q3ListViewItemIterator | Iterator for collections of Q3ListViewItems
Q3LocalFs | Implementation of a QNetworkProtocol that works on the local file system
Q3MainWindow | Main application window, with a menu bar, dock windows (e.g. for toolbars), and a status bar
Q3MemArray | Template class that provides arrays of simple types
Q3MimeSourceFactory | Extensible provider of mime-typed data
Q3MultiLineEdit | Simple editor for inputting text
Q3NetworkOperation | Common operations for network protocols
Q3NetworkProtocol | Common API for network protocols
Q3PaintDeviceMetrics | Information about a paint device
Q3Painter | Qt 3 compatibility wrapper for QPainter
Q3Picture | Paint device that records and replays Q3Painter commands
Q3PointArray
Q3PopupMenu | Thin compatibility wrapper around QMenu
Q3Process | Used to start external programs and to communicate with them
Q3ProgressBar | Horizontal progress bar
Q3ProgressDialog | Feedback on the progress of a slow operation
Q3PtrCollection | The base class of most pointer-based Qt collections
Q3PtrDict | Template class that provides a dictionary based on void* keys
Q3PtrDictIterator | Iterator for Q3PtrDict collections
Q3PtrList | Template class that provides a list
Q3PtrListIterator | Iterator for Q3PtrList collections
Q3PtrQueue | Template class that provides a queue
Q3PtrStack | Template class that provides a stack
Q3PtrVector | Template collection class that provides a vector (array)
Q3RangeControl | Integer value within a range
Q3ScrollView | Scrolling area with on-demand scroll bars
Q3Semaphore | Robust integer semaphore
Q3ServerSocket | TCP-based server
Q3Shared | Used internally for implementing shared classes
Q3Signal | Can be used to send signals for classes that don't inherit QObject
Q3SimpleRichText | Small displayable piece of rich text
Q3Socket | Buffered TCP connection
Q3SocketDevice | Platform-independent low-level socket API
Q3SqlCursor | Browsing and editing of SQL tables and views
Q3SqlEditorFactory | Used to create the editors used by Q3DataTable and Q3SqlForm
Q3SqlFieldInfo | Stores meta data associated with a SQL field
Q3SqlForm | Creates and manages data entry forms tied to SQL databases
Q3SqlPropertyMap | Used to map widgets to SQL fields
Q3SqlRecordInfo | Encapsulates a set of database field meta data
Q3SqlSelectCursor | Browsing of general SQL SELECT statements
Q3StoredDrag | Simple stored-value drag object for arbitrary MIME data
Q3StrIList | Doubly-linked list of char* with case-insensitive comparison
Q3StrList | Doubly-linked list of char*
Q3StrListIterator | Iterator for the Q3StrList and Q3StrIList classes
Q3StyleSheet | Collection of styles for rich text rendering and a generator of tags
Q3StyleSheetItem | Encapsulation of a set of text styles
Q3SyntaxHighlighter | Base class for implementing Q3TextEdit syntax highlighters
Q3TabDialog | Stack of tabbed widgets
Q3Table | Flexible editable table widget
Q3TableItem | The cell content for Q3Table cells
Q3TableSelection | Access to a selected area in a Q3Table
Q3TextBrowser | Rich text browser with hypertext navigation
Q3TextDrag | Drag and drop object for transferring plain and Unicode text
Q3TextEdit | Powerful single-page rich text editor
Q3TextStream | Basic functions for reading and writing text using a QIODevice
Q3TextView | Rich text viewer
Q3TimeEdit | Time editor
Q3ToolBar | Movable panel containing widgets such as tool buttons
Q3UriDrag | Drag object for a list of URI references
Q3Url | URL parser and simplifies working with URLs
Q3UrlOperator | Common operations on URLs
Q3VBox | Vertical geometry management of its child widgets
Q3VButtonGroup | Organizes button widgets in a vertical column
Q3VGroupBox | Organizes widgets in a group with one vertical column
Q3ValueList | Value-based template class that provides lists
Q3ValueListConstIterator | Const iterator for Q3ValueList
Q3ValueListIterator | Iterator for Q3ValueList
Q3ValueStack | Value-based template class that provides a stack
Q3ValueVector | Value-based template class that provides a dynamic array
Q3WhatsThis
Q3WidgetStack | Stack of widgets of which only the top widget is user-visible
Q3Wizard | Framework for wizard dialogs
QAbstractButton | The abstract base class of button widgets, providing functionality common to buttons
QAbstractEventDispatcher | Manages Qt's event queue, excluding GUI-related events
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
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
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
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
QAxAggregated | Abstract base class for implementations of additional COM interfaces
QAxBase | Abstract class that provides an API to initialize and access a COM object
QAxBindable | Interface between a QWidget and an ActiveX client
QAxFactory | Defines a factory for the creation of COM components
QAxObject | QObject that wraps a COM object
QAxScript | Wrapper around script code
QAxScriptEngine | Wrapper around a script engine
QAxScriptManager | Bridge between application objects and script code
QAxWidget | QWidget that wraps an ActiveX control
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 | 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 | Parameters that describe a close event
QColor | Colors based on RGB, HSV or CMYK values
QColorDialog | Dialog widget for specifying colors
QColorGroup
QColormap | Maps device independent QColors to device dependent pixel values
QComboBox | Combined button and popup list
QCommonStyle | Encapsulates the common Look and Feel of a GUI
QCompleter | Completions based on a item model
QConicalGradient | Used in combination with QBrush to specify a conical gradient brush
QConstString | Wrapper for constant Unicode string data
QContextMenuEvent | Parameters that describe a context menu event
QCopChannel | Communication capabilities between clients
QCoreApplication | Event loop for console Qt applications
QCursor | Mouse cursor with an arbitrary shape
QCustomEvent | Support for custom events
QCustomRasterPaintDevice | Enables acceleration of painting operations using the available hardware
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
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
QDecoration | Base class for window decorations in Qtopia Core
QDecorationFactory | Creates window decorations in Qtopia Core
QDecorationPlugin | Abstract base class for window decoration plugins
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
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
QDirModel | Data model for the local filesystem
QDirectPainter | Direct access to the underlying hardware
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 | 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 | 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
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 icon for the QDirModel class
QFileInfo | System-independent file information
QFileOpenEvent | Event that will be sent when there is a request to open a file
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 | Event parameters for widget focus events
QFocusFrame | Focus frame which can be outside of a widget's normal paintable area
QFont | 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
QFrame | The base class of widgets that can have a frame
QFtp | Implementation of the client side of FTP protocol
QGLColormap | Used for installing custom colormaps into QGLWidgets
QGLContext | Encapsulates an OpenGL rendering context
QGLFormat | 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
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
QGraphicsLineItem | Line item that you can add to a QGraphicsScene
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
QGraphicsRectItem | Rectangle item that you can add to a QGraphicsScene
QGraphicsScene | Surface for managing a large number of 2D graphical items
QGraphicsSceneContextMenuEvent
QGraphicsSceneEvent | Base class for all graphics view related events
QGraphicsSceneHoverEvent
QGraphicsSceneMouseEvent
QGraphicsSceneWheelEvent
QGraphicsSimpleTextItem | Text 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
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
QHelpEvent | Event that is used to request helpful information about a particular point in a widget
QHideEvent | Event which is sent after a widget is hidden
QHostAddress | IP address
QHostInfo | Static functions for host name lookups
QHoverEvent | Parameters that describe a mouse event
QHttp | Implementation of the HTTP protocol
QHttpHeader | Header information for HTTP
QHttpRequestHeader | Request header information for HTTP
QHttpResponseHeader | 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
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
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
QKbdDriverFactory | Creates keyboard drivers in Qtopia Core
QKbdDriverPlugin | Abstract base class for keyboard driver plugins
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
QLocale | Converts between numbers and their string representations in various languages
QMacPasteboardMime | Maps open-standard MIME to Mac flavors
QMacStyle | Mac OS X style using the Apple Appearance Manager
QMainWindow | Main application window
QMap | Template class that provides a skip-list-based dictionary
QMapIterator | Java-style const iterator for QMap and QMultiMap
QMatrix | 2D transformations of a coordinate system
QMenu | Menu widget for use in menu bars, context menus, and other popup menus
QMenuBar | Horizontal menu bar
QMenuItem | Represents an item in a menu
QMessageBox | Modal dialog with a short message, an icon, and buttons laid out depending on the current style
QMetaClassInfo | Additional information about a class
QMetaEnum | Meta-data about an enumerator
QMetaMethod | Meta-data about a member function
QMetaObject | 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
QMouseDriverFactory | Creates mouse drivers in Qtopia Core
QMouseDriverPlugin | Abstract base class for mouse driver plugins
QMouseEvent | Parameters that describe a mouse event
QMoveEvent | 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
QNetworkAddressEntry | Stores one IP address supported by a network interface, along with its associated netmask and broadcast address
QNetworkInterface | Listing of the host's IP addresses and network interfaces
QNetworkProxy | Network layer proxy
QObject | The base class of all Qt objects
QObjectCleanupHandler | Watches the lifetime of multiple QObjects
QPageSetupDialog | Configuration dialog for the page-related options on a printer
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 | 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 | 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 | 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
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
QPrinter | Paint device that paints on a printer
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 acceleration of painting operations using the available hardware
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 | Clip region for a painter
QResizeEvent | Event parameters for resize events
QResource | Interface for reading directly from resources
QRubberBand | Rectangle or line that can indicate a selection or a boundary
QScreen | Base class for screen drivers in Qtopia Core
QScreenCursor | Manages the screen cursor
QScreenDriverFactory | Creates screen drivers in Qtopia Core
QScreenDriverPlugin | Abstract base class for screen driver plugins
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 | Pointer to a shared data object
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
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 | Corner-grip for resizing a top-level window
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
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
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
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
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
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 tabbar, i.e. the part that the tabbar 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
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
QStylePainter | Convenience class for drawing QStyle elements inside a widget
QStylePlugin | Abstract base for custom QStyle plugins
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
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 | Container for storing a selection range in a QTableWidget
QTabletEvent | 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
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
QTextIStream | Convenience class for input streams
QTextImageFormat | Formatting information for images in a QTextDocument
QTextInlineObject | Represents an inline object in a QTextLayout
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
QTextOStream | Convenience class for output streams
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
QTextTableFormat | Formatting information for tables in a QTextDocument
QThread | Platform-independent threads
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 | 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 | Tooltips (balloon help) for any widget
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
QWSCalibratedMouseHandler | Implements a mouse driver providing calibration and noise reduction
QWSClient | Encapsulates a client process in Qtopia Core
QWSEmbedWidget | Enabels embedded top-level widgets in Qtopia Core
QWSEvent | Encapsulates an event in Qtopia Core
QWSInputMethod | International input methods in Qtopia Core
QWSKeyboardHandler | Base class for keyboard drivers in Qtopia Core
QWSMouseHandler | Base class for mouse drivers in Qtopia Core
QWSPointerCalibrationData | Container for data used in calibration of a mouse handler
QWSScreenSaver | Base class for screensavers in Qtopia Core
QWSServer | Server-specific functionality in Qtopia Core
QWSWindow | Encapsulates a top-level window in Qtopia Core
QWSWindowSurface | The drawing area for top-level windows in Qtopia Core
QWaitCondition | Condition variable for synchronizing threads
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 | 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
QWindowsXPStyle | Microsoft WindowsXP-like look and feel
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
QX11EmbedContainer | XEmbed container widget
QX11EmbedWidget | XEmbed client widget
QX11Info | Information about the X display configuration
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
QXmlInputSource | The input data for the QXmlReader subclasses
QXmlLexicalHandler | Interface to report the lexical content of XML data
QXmlLocator | The XML handler classes with information about the parsing position within a file
QXmlNamespaceSupport | Helper class for XML readers which want to include namespace support
QXmlParseException | Used to report errors with the QXmlErrorHandler interface
QXmlReader | Interface for XML readers (i.e. parsers)
QXmlSimpleReader | Implementation of a simple XML parser