QtWidgets Module's Classes

Qt Widgets C++ Classes

The Qt Widgets module extends Qt GUI with C++ widget functionality. More...

API Reference

These are links to the API reference materials.

• Qt Widgets C++ Classes
  • Basic Widget Classes
  • Advanced Widget Classes
  • Abstract Widget Classes
  • Organizer Widget Classes
  • Graphics View Classes
  • Model/View Classes
  • Main Window and Related Classes
  • Widget Appearance and Style Related Classes
  • Layout Classes
• Qt Style Sheets Reference

Classes

QAbstractButton	The abstract base class of button widgets, providing functionality common to buttons
QAbstractGraphicsShapeItem	Common base for all path items
QAbstractItemDelegate	Used to display and edit data items from a model
QAbstractItemView	The basic functionality for item view classes
QAbstractScrollArea	Scrolling area with on-demand scroll bars
QAbstractSlider	Integer value within a range
QAbstractSpinBox	Spinbox and a line edit to display values
QAccessibleWidget	Implements the QAccessibleInterface for QWidgets
QAction	Abstract user interface action that can be inserted into widgets
QActionGroup	Groups actions together
QApplication	Manages the GUI application's control flow and main settings
QBoxLayout	Lines up child widgets horizontally or vertically
QButtonGroup	Container to organize groups of button widgets
QCalendarWidget	Monthly based calendar widget allowing the user to select a date
QCheckBox	Checkbox with a text label
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
QDataWidgetMapper	Mapping between a section of a data model to widgets
QDateEdit	Widget for editing dates based on the QDateTimeEdit widget
QDateTimeEdit	Widget for editing dates and times
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
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
QErrorMessage	Error message display dialog
QFileDialog	Dialog that allow users to select files or directories
QFileIconProvider	File icons for the QDirModel and the QFileSystemModel classes
QFileSystemModel	Data model for the local filesystem
QFocusFrame	Focus frame which can be outside of a widget's normal paintable area
QFontComboBox	Combobox that lets the user select a font family
QFontDialog	Dialog widget for selecting a font
QFormLayout	Manages forms of input widgets and their associated labels
QFrame	The base class of widgets that can have a frame
QGesture	Represents a gesture, containing properties that describe the corresponding user input
QGestureEvent	The description of triggered gestures
QGestureRecognizer	The infrastructure for gesture recognition
QGraphicsAnchor	Represents an anchor between two items in a QGraphicsAnchorLayout
QGraphicsAnchorLayout	Layout where one can anchor widgets together in Graphics View
QGraphicsBlurEffect	Blur effect
QGraphicsColorizeEffect	Colorize effect
QGraphicsDropShadowEffect	Drop shadow effect
QGraphicsEffect	The base class for all graphics effects
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
QGraphicsItemGroup	Container that treats a group of items as a single item
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
QGraphicsObject	Base class for all graphics items that require signals, slots and properties
QGraphicsOpacityEffect	Opacity effect
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
QGraphicsRotation	Rotation transformation around a given axis
QGraphicsScale	Scale transformation
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
QGraphicsTextItem	Text item that you can add to a QGraphicsScene to display formatted text
QGraphicsTransform	Abstract base class for building advanced transformations on QGraphicsItems
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
QHeaderView	Header row or header column for item views
QInputDialog	Simple convenience dialog to get a single value from the user
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
QKeyEventTransition	Transition for key events
QKeySequenceEdit	Allows to input a QKeySequence
QLCDNumber	Displays a number with LCD-like digits
QLabel	Text or image display
QLayout	The base class of geometry managers
QLayoutItem	Abstract item that a QLayout manipulates
QLineEdit	One-line text editor
QListView	List or icon view onto a model
QListWidget	Item-based list widget
QListWidgetItem	Item for use with the QListWidget item view class
QMacCocoaViewContainer	Widget for Mac OS X that can be used to wrap arbitrary Cocoa views (i.e., NSView subclasses) and insert them into Qt hierarchies
QMacNativeWidget	Widget for Mac OS X that provides a way to put Qt widgets into Cocoa hierarchies
QMainWindow	Main application window
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
QMouseEventTransition	Transition for mouse events
QOpenGLWidget	Widget for rendering OpenGL graphics
QPanGesture	Describes a panning gesture made by the user
QPinchGesture	Describes a pinch gesture made by the user
QPlainTextDocumentLayout	Implements a plain text layout for QTextDocument
QPlainTextEdit	Widget that is used to edit and display plain text
QProgressBar	Horizontal or vertical progress bar
QProgressDialog	Feedback on the progress of a slow operation
QProxyStyle	Convenience class that simplifies dynamically overriding QStyle elements
QPushButton	Command button
QRadioButton	Radio button with a text label
QRubberBand	Rectangle or line that can indicate a selection or a boundary
QScrollArea	Scrolling view onto another widget
QScrollBar	Vertical or horizontal scroll bar
QScroller	Enables kinetic scrolling for any scrolling widget or graphics item
QScrollerProperties	Stores the settings for a QScroller
QSessionManager	Access to the session manager
QShortcut	Used to create keyboard shortcuts
QSizeGrip	Resize handle for resizing top-level windows
QSizePolicy	Layout attribute describing horizontal and vertical resizing policy
QSlider	Vertical or horizontal slider
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 for the splitter
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
QStandardItemEditorCreator	The possibility to register widgets without having to subclass QItemEditorCreatorBase
QStatusBar	Horizontal bar suitable for presenting status information
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
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
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
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
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
QSwipeGesture	Describes a swipe gesture made by 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	Way to interact with selection in a model without using model indexes and a selection model
QTapAndHoldGesture	Describes a tap-and-hold (aka LongTap) gesture made by the user
QTapGesture	Describes a tap gesture made by the user
QTextBrowser	Rich text browser with hypertext navigation
QTextEdit	Widget that is used to edit and display both plain and rich text
QTextEdit::ExtraSelection	QTextEdit::ExtraSelection structure provides a way of specifying a character format for a given selection in a document
QTileRules	The rules used to draw a pixmap or image split into nine segments
QTimeEdit	Widget for editing times based on the QDateTimeEdit widget
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
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
QVBoxLayout	Lines up widgets vertically
QWhatsThis	Simple description of any widget, i.e. answering the question "What's This?"
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
QWizard	Framework for wizards
QWizardPage	The base class for wizard pages