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# Qt Desktop Light Edition Classes

QtConcurrent::Exception | Base class for exceptions that can transferred across threads
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
Q3CheckListItem | Checkable list view items
Q3ColorDrag | Drag and drop object for transferring colors between widgets
Q3ComboBox | Combined button and popup list
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
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
Q3FileDialog | Dialogs that allow users to select files or directories
Q3FileIconProvider | Icons for Q3FileDialog to use
Q3FilePreview | File previewing in Q3FileDialog
Q3Frame
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
Q3HBoxLayout | Lines up widgets horizontally
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
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
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
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
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
Q3VBoxLayout | Lines up widgets vertically
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 | Interface to manage Qt's event queue
QAbstractFileEngine | Abstraction for accessing the filesystem
QAbstractFileEngineHandler | Way to register custom file engines with your application
QAbstractFileEngineIterator | Iterator interface for custom file engines
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
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
QAtomicInt | Platform-independent atomic operations on integers
QAtomicPointer | Template class that provides platform-independent atomic operations on pointers
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
QColorGroup | Contains color groups for each widget state
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
QConstString | Wrapper for constant Unicode string data
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
QCustomEvent | Support for custom events
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
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
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
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
QFormLayout | Manages forms of input widgets and their associated labels
QFrame | The base class of widgets that can have a frame
QFuture | Represents the result of an asynchronous computation
QFutureSynchronizer | Convenience class that simplifies QFuture synchronization
QFutureWatcher | Allows monitoring a QFuture using signals and slots
QGenericArgument | Internal helper class for marshalling arguments
QGenericReturnArgument | Internal helper class for marshalling arguments
QGradient | Used in combination with QBrush to specify gradient fills
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
QHoverEvent | Contains parameters that describe a mouse event
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
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
QMenuItem | Represents an item in a menu
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
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
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
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
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
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
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
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
QTextIStream | Convenience class for input streams
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
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
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
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
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
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
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::UnhandledException | Represents an unhandled exception in a worker thread