Widgets Classes

The Widget Classes

The following sections list the widget classes. See the Qt Widget Gallery for some examples.

Basic Widget Classes

These basic widgets (controls), e.g. buttons, comboboxes and scroll bars, are designed for direct use.

QCheckBox

Checkbox with a text label

QComboBox

Combined button and popup list

QCommandLinkButton

Vista style command link button

QDateEdit

Widget for editing dates based on the QDateTimeEdit widget

QDateTimeEdit

Widget for editing dates and times

QDial

Rounded range control (like a speedometer or potentiometer)

QDoubleSpinBox

Spin box widget that takes doubles

QFocusFrame

Focus frame which can be outside of a widget's normal paintable area

QFontComboBox

Combobox that lets the user select a font family

QLCDNumber

Displays a number with LCD-like digits

QLabel

Text or image display

QLineEdit

One-line text editor

QMenu

Menu widget for use in menu bars, context menus, and other popup menus

QProgressBar

Horizontal or vertical progress bar

QPushButton

Command button

QRadioButton

Radio button with a text label

QScrollArea

Scrolling view onto another widget

QScrollBar

Vertical or horizontal scroll bar

QSizeGrip

Resize handle for resizing top-level windows

QSlider

Vertical or horizontal slider

QSpinBox

Spin box widget

QTabBar

Tab bar, e.g. for use in tabbed dialogs

QTabWidget

Stack of tabbed widgets

QTimeEdit

Widget for editing times based on the QDateTimeEdit widget

QToolBox

Column of tabbed widget items

QToolButton

Quick-access button to commands or options, usually used inside a QToolBar

QWidget

The base class of all user interface objects

Advanced Widget Classes

Advanced GUI widgets, e.g. tab widgets and progress bars, provide more complex user interface controls.

QCalendarWidget

Monthly based calendar widget allowing the user to select a date

QColumnView

Model/view implementation of a column view

QDataWidgetMapper

Mapping between a section of a data model to widgets

QDesktopWidget

Access to screen information on multi-head systems

QListView

List or icon view onto a model

QMacCocoaViewContainer

Widget for OS X that can be used to wrap arbitrary Cocoa views (i.e., NSView subclasses) and insert them into Qt hierarchies

QMacNativeWidget

Widget for OS X that provides a way to put Qt widgets into Cocoa hierarchies

QTableView

Default model/view implementation of a table view

QTreeView

Default model/view implementation of a tree view

QUndoView

Displays the contents of a QUndoStack

QWebEngineView

Widget that is used to view and edit web documents

Abstract Widget Classes

The abstract widget classes are base classes. They are not usable as standalone classes but provide functionality when they are subclassed.

QAbstractButton

The abstract base class of button widgets, providing functionality common to buttons

QAbstractScrollArea

Scrolling area with on-demand scroll bars

QAbstractSlider

Integer value within a range

QAbstractSpinBox

Spinbox and a line edit to display values

QDialog

The base class of dialog windows

QFrame

The base class of widgets that can have a frame

Organizer Widget Classes

Classes like splitters, tab bars, button groups, etc are used for organizing and grouping GUI primitives into more complex applications and dialogs.

QButtonGroup

Container to organize groups of button widgets

QGroupBox

Group box frame with a title

QSplitter

Implements a splitter widget

QSplitterHandle

Handle functionality for the splitter

QStackedWidget

Stack of widgets where only one widget is visible at a time

QTabWidget

Stack of tabbed widgets

Graphics View Classes

QAbstractGraphicsShapeItem

Common base for all path items

QGraphicsAnchor

Represents an anchor between two items in a QGraphicsAnchorLayout

QGraphicsAnchorLayout

Layout where one can anchor widgets together in Graphics View

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

QGraphicsPathItem

Path item that you can add to a QGraphicsScene

QGraphicsPixmapItem

Pixmap item that you can add to a QGraphicsScene

QGraphicsPolygonItem

Polygon item that you can add to a QGraphicsScene

QGraphicsProxyWidget

Proxy layer for embedding a QWidget in a QGraphicsScene

QGraphicsRectItem

Rectangle item that you can add to a QGraphicsScene

QGraphicsScene

Surface for managing a large number of 2D graphical items

QGraphicsSceneContextMenuEvent

Context menu events in the graphics view framework

QGraphicsSceneDragDropEvent

Events for drag and drop in the graphics view framework

QGraphicsSceneEvent

Base class for all graphics view related events

QGraphicsSceneHelpEvent

Events when a tooltip is requested

QGraphicsSceneHoverEvent

Hover events in the graphics view framework

QGraphicsSceneMouseEvent

Mouse events in the graphics view framework

QGraphicsSceneMoveEvent

Events for widget moving in the graphics view framework

QGraphicsSceneResizeEvent

Events for widget resizing in the graphics view framework

QGraphicsSceneWheelEvent

Wheel events in the graphics view framework

QGraphicsSimpleTextItem

Simple text path item that you can add to a QGraphicsScene

QGraphicsSvgItem

QGraphicsItem that can be used to render the contents of SVG files

QGraphicsTextItem

Text item that you can add to a QGraphicsScene to display formatted text

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

QStyleOptionGraphicsItem

Used to describe the parameters needed to draw a QGraphicsItem

Model/View Classes

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

QAbstractProxyModel

Base class for proxy item models that can do sorting, filtering or other data processing tasks

QAbstractTableModel

Abstract model that can be subclassed to create table models

QColumnView

Model/view implementation of a column view

QDataWidgetMapper

Mapping between a section of a data model to widgets

QFileSystemModel

Data model for the local filesystem

QHeaderView

Header row or header column for item views

QIdentityProxyModel

Proxies its source model unmodified

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

QListView

List or icon view onto a model

QListWidget

Item-based list widget

QListWidgetItem

Item for use with the QListWidget item view class

QModelIndex

Used to locate data in a data model

QPersistentModelIndex

Used to locate data in a data model

QSortFilterProxyModel

Support for sorting and filtering data passed between another model and a view

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

QStringListModel

Model that supplies strings to views

QStyledItemDelegate

Display and editing facilities for data items from a model

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

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

Main Window and Related Classes

QAction

Abstract user interface action that can be inserted into widgets

QActionGroup

Groups actions together

QDockWidget

Widget that can be docked inside a QMainWindow or floated as a top-level window on the desktop

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

QSizeGrip

Resize handle for resizing top-level windows

QStatusBar

Horizontal bar suitable for presenting status information

QToolBar

Movable panel that contains a set of controls

QWidgetAction

Extends QAction by an interface for inserting custom widgets into action based containers, such as toolbars

Widget Appearance and Style-Related Classes

Classes used for customizing UI appearance and style.

QColor

Colors based on RGB, HSV or CMYK values

QCommonStyle

Encapsulates the common Look and Feel of a GUI

QCursor

Mouse cursor with an arbitrary shape

QFont

Specifies a font used for drawing text

QFontDatabase

Information about the fonts available in the underlying window system

QFontInfo

General information about fonts

QGraphicsAnchor

Represents an anchor between two items in a QGraphicsAnchorLayout

QGraphicsAnchorLayout

Layout where one can anchor widgets together in Graphics View

QPalette

Contains color groups for each widget state

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

QStylePainter

Convenience class for drawing QStyle elements inside a widget

Layout Classes

QBoxLayout

Lines up child widgets horizontally or vertically

QButtonGroup

Container to organize groups of button widgets

QFormLayout

Manages forms of input widgets and their associated labels

QGraphicsAnchor

Represents an anchor between two items in a QGraphicsAnchorLayout

QGraphicsAnchorLayout

Layout where one can anchor widgets together in Graphics View

QGridLayout

Lays out widgets in a grid

QGroupBox

Group box frame with a title

QHBoxLayout

Lines up widgets horizontally

QLayout

The base class of geometry managers

QLayoutItem

Abstract item that a QLayout manipulates

QSizePolicy

Layout attribute describing horizontal and vertical resizing policy

QSpacerItem

Blank space in a layout

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

QVBoxLayout

Lines up widgets vertically

QWidgetItem

Layout item that represents a widget

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