All Qt Examples | Qt 5.9

Qt 5.9 | All Qt Examples

Qt 5.9.4 Reference Documentation

# All Qt Examples

## Qt Concurrent

Image Scaling Example | Demonstrates how to asynchronously scale images
Map Example | Demonstrates how to scale images synchronously
QtConcurrent Progress Dialog Example | Demonstrates how to monitor the progress of the active processes
QtConcurrent Word Count Example | Demonstrates how to use the map-reduce algorithm
Run Function Example | Demonstrates how to run standard functions concurrently

## Qt Core

Contiguous Cache Example | Contiguous Cache example shows how to use QContiguousCache to manage memory usage for very large models. In some environments memory is limited and, even when it isn't, users still dislike an application using excessive memory. Using QContiguousCache to manage a list, rather than loading the entire list into memory, allows the application to limit the amount of memory it uses, regardless of the size of the data set it accesses
Custom Type Example | Custom Type example shows how to integrate a custom type into Qt's meta-object system
JSON Save Game Example | JSON Save Game example demonstrates how to save and load a small game using QJsonDocument, QJsonObject and QJsonArray
Local Fortune Client Example | Demonstrates using QLocalSocket for a simple local service client
Local Fortune Server Example | Demonstrates using QLocalServer and QLocalSocket for serving a simple local service
MIME Type Browser Example | Shows the hierarchy of MIME types and can be used to determine the MIME type of a file
Mandelbrot Example | Mandelbrot example demonstrates multi-thread programming using Qt. It shows how to use a worker thread to perform heavy computations without blocking the main thread's event loop
Queued Custom Type Example | Demonstrates multi-thread programming using Qt
Semaphores Example | Demonstrates multi-thread programming using Qt
Shared Memory Example | Demonstrates doing inter-process communication using shared memory with the QSharedMemory class
Wait Conditions Example | Demonstrates multi-thread programming using Qt

## Qt D-Bus

D-Bus Chat Example | Demonstrates communication among instances of an application
D-Bus Complex Ping Pong Example | Demonstrates usage of the Qt D-Bus typesystem
D-Bus List Names Example | Shows how to access the D-Bus bus daemon service
D-Bus Ping Pong Example | Demonstrates a simple message system using D-Bus
D-Bus Remote Controlled Car Example | Shows how to use Qt D-Bus to control a car from another application

## Qt GUI

Analog Clock Window Example | Analog Clock Window example shows how to draw the contents of a custom window
OpenGL Window Example | This example shows how to create a minimal QWindow based application for the purpose of using OpenGL
Raster Window Example | This example shows how to create a minimal QWindow based application using QPainter for rendering

## Qt Network

Blocking Fortune Client Example | Demonstrates how to create a client for a network service
Broadcast Receiver Example | Demonstrates how to receive information broadcasted over a local network
Broadcast Sender Example | Demonstrates how to broadcast information to multiple clients on a local network
Fortune Client Example | Demonstrates how to create a client for a network service
Fortune Server Example | Demonstrates how to create a server for a network service
Google Suggest Example | Obtains the list of search recommendations by the Google search engine
HTTP Example | Demonstrates a simple HTTP client
Loopback Example | Demonstrates the client-server communication on a local host
Multicast Receiver Example | Demonstrates how to receive information sent to a multicast group
Multicast Sender Example | Demonstrates how to send messages to a multicast group
Network Chat Example | Demonstrates a stateful peer-to-peer Chat client
Network Download Example | Demonstrates how to use networking APIs for multiple downloads
Network Download Manager Example | Demonstrates how to use the networking APIs for multiple downloads
Secure Socket Client Example | Demonstrates how to communicate over an encrypted (SSL) connection
Threaded Fortune Server Example | Threaded Fortune Server example shows how to create a server for a simple network service that uses threads to handle requests from different clients. It is intended to be run alongside the Fortune Client example
Torrent Example | Demonstrates complex TCP/IP operations

## Qt OpenGL

2D Painting Example | 2D Painting example shows how QPainter and QGLWidget can be used together to display accelerated 2D graphics on supported hardware
Cube OpenGL ES 2.0 example | Cube OpenGL ES 2.0 example shows how to write mouse rotateable textured 3D cube using OpenGL ES 2.0 with Qt. It shows how to handle polygon geometries efficiently and how to write simple vertex and fragment shader for programmable graphics pipeline. In addition it shows how to use quaternions for representing 3D object orientation
Hello GL2 Example | Hello GL2 example demonstrates the basic use of the OpenGL-related classes provided with Qt
Textures Example | Textures example demonstrates the use of Qt's image classes as textures in applications that use both OpenGL and Qt to display graphics

## Qt SQL

Books | Shows how to use Qt SQL classes with a model/view framework
Cached Table Example | Cached Table example shows how a table view can be used to access a database, caching any changes to the data until the user explicitly submits them using a push button
Drill Down Example | Drill Down example shows how to read data from a database as well as submit changes, using the QSqlRelationalTableModel and QDataWidgetMapper classes
Master Detail Example | Master Detail Example shows how to present data from different data sources in the same application. The album titles, and the corresponding artists and release dates, are kept in a database, while each album's tracks are stored in an XML file
Query Model Example | Query Model example shows how to make customized versions of data obtained from a SQL query, using a model that encapsulates the query and table views to display the results
Relational Table Model Example | Relational Table Model example shows how to use table views with a relational model to visualize the relations between items in a database
SQL Browser | SQL Browser example shows how a data browser can be used to visualize the results of SQL statements on a live database
SQL Widget Mapper Example | SQL Widget Mapper example shows how to use a map information from a database to widgets on a form
Table Model Example | Table Model example shows how to use a specialized SQL table model with table views to edit information in a database

## Qt Test

Chapter 1: Writing a Unit Test | How to write a unit test
Chapter 2: Data Driven Testing | How to create data driven tests
Chapter 3: Simulating GUI Events | Howe to simulate GUI events
Chapter 4: Replaying GUI Events | How to replay GUI events
Chapter 5: Writing a Benchmark | How to write a benchmark

## Qt Widgets

40000 Chips | Visualizes a huge graphic view scene with 40000 chip items
Address Book Example | Address book example shows how to use proxy models to display different views onto data from a single model
Affine Transformations | Demonstrates how affine transformations in QPainter works
Analog Clock Example | Analog Clock example shows how to draw the contents of a custom widget
Anchor Layout Example | Demonstrates anchor layout in a graphics view scene
Animated Tiles Example | Animated Tiles example animates items in a graphics scene
Application Chooser Example | Application Chooser example shows how to use the Qt state machine and the animation framework to select between applications
Application Example | Application example shows how to implement a standard GUI application with menus, toolbars, and a status bar. The example itself is a simple text editor program built around QPlainTextEdit
Basic Drawing Example | Basic Drawing example shows how to display basic graphics primitives in a variety of styles using the QPainter class
Basic Graphics Layouts Example | Demonstrates how to create basic graphics layout
Basic Layouts Example | Shows how to use the standard layout managers
Basic Sort/Filter Model Example | Basic Sort/Filter Model example illustrates how to use QSortFilterProxyModel to perform basic sorting and filtering
Blur Picker Effect Example | Demonstrates how to apply graphical effects on items in the view
Border Layout Example | Shows how to arrange child widgets along a border
Boxes | Combines advanced OpenGL rendering with the Graphics View framework
Calculator Example | Example shows how to use signals and slots to implement the functionality of a calculator widget, and how to use QGridLayout to place child widgets in a grid
Calendar Example | Calendar example shows how to create rich text content and display it using a rich text editor
Calendar Widget Example | Calendar Widget example shows use of QCalendarWidget
Character Map Example | Character Map example shows how to create a custom widget that can both display its own content and respond to user input
Chart Example | Chart example shows how to create a custom view for the model/view framework
Class Wizard Example | License Wizard example shows how to implement linear wizards using QWizard
Code Editor Example | Code Editor example shows how to create a simple editor that has line numbers and that highlights the current line
Colliding Mice Example | Demonstrates how to animate items on a graphics view
Color Editor Factory Example | This example shows how to create an editor that can be used by a QItemDelegate
Combo Widget Mapper Example | Combo Widget Mapper example shows how to use a custom delegate to map information from a model to specific widgets on a form
Completer Example | Completer example shows how to provide string-completion facilities for an input widget based on data provided by a model
Composition Modes | Demonstrates how Composition Modes work in QPainter
Concentric Circles Example | Demonstrates the improved quality that antialiasing and floating point precision gives
Config Dialog Example | Config Dialog examples shows how a configuration dialog can be created by using an icon view with a stacked widget
Custom Completer Example | Custom Completer example shows how to provide string-completion facilities for an input widget based on data provided by a model. The completer pops up suggestions for possible words based on the first three characters input by the user and the user's choice of word is inserted into the TextEdit using QTextCursor
Custom Sort/Filter Model Example | Custom Sort/Filter Model example illustrates how to subclass QSortFilterProxyModel to perform advanced sorting and filtering
Diagram Scene Example | Demonstrate how to use the Graphics View framework
Digital Clock Example | Digital Clock example shows how to use QLCDNumber to display a number with LCD-like digits
Dir View Example | This example demonstrates the usage of a tree view
Dock Widgets Example | Dock Widgets example shows how to add dock windows to an application. It also shows how to use Qt's rich text engine
Drag and Drop Puzzle Example | Drag and Drop Puzzle example demonstrates a way of using the drag and drop system with item view widgets
Drag and Drop Robot Example | Demonstrates how to drag and drop items in a graphics view
Draggable Icons Example | Draggable Icons example shows how to drag and drop image data between widgets in the same application, and between different applications
Draggable Text Example | Draggable Text example shows how to drag and drop textual data between widgets in the same application, and between different applications
Drop Site Example | Example shows how to distinguish the various MIME formats available in a drag and drop operation
Dynamic Layouts Example | Shows how to re-orient widgets in running applications
Easing Curves Example | Easing Curves example shows how to use easing curves to control the speed of an animation
Echo Plugin Example | This example shows how to create a Qt plugin
Editable Tree Model Example | This example shows how to implement a simple item-based tree model that can be used with other classes the model/view framework
Elastic Nodes Example | Demonstrates how to interact with graphical items in a scene
Elided Label Example | This example creates a widget similar to QLabel, that elides the last visible line, if the text is too long to fit the widget's geometry
Embedded Dialogs | Demonstrates how to embed dialogs into a graphics view
Event Transitions Example | Event Transitions example shows how to use event transitions, a feature of The State Machine Framework
Extension Example | Extension example shows how to add an extension to a QDialog using the QAbstractButton::toggled() signal and the QWidget::setVisible() slot
Factorial States Example | Factorial States example shows how to use The State Machine Framework to calculate the factorial of an integer
Fade Message Effect Example | Demonstrates how to apply effects on items in the view
Fetch More Example | Fetch More example shows how two add items to an item view model on demand
Find Files Example | Find Files example shows how to use QProgressDialog to provide feedback on the progress of a slow operation. The example also shows how to use QFileDialog to facilitate browsing, how to use QTextStream's streaming operators to read a file, and how to use QTableWidget to provide standard table display facilities for applications. In addition, files can be opened using the QDesktopServices class
Flow Layout Example | Shows how to arrange widgets for different window sizes
Font Sampler Example | Font Sampler example shows how to preview and print multi-page documents
Fridge Magnets Example | Fridge Magnets example illustrates how to move around several types of MIME-encoded data with drag and drop
Frozen Column Example | This example demonstrates how to freeze a column within a QTableView
Gradients | Shows how gradients can be used with QPainter
Graphics View Flow Layout Example | Demonstrates flow layout on a graphics view scene
Group Box Example | Group Box example shows how to use the different kinds of group boxes in Qt
I18N Example | Internationalization (I18N) example demonstrates Qt's support for translated text. Developers can write the initial application text in one language, and translations can be provided later without any modifications to the code. It also demonstrates how to detect the system language settings and show the UI in the appropriate language
Icons Example | Icons example shows how QIcon can generate pixmaps reflecting an icon's state, mode and size
Image Composition Example | Shows how composition modes work in QPainter
Image Gestures Example | Demonstrates the use of simple gestures in a widget
Image Viewer Example | Example shows how to combine QLabel and QScrollArea to display an image
Interview | This example demonstrates the usage of the model/view framework
Item Views Puzzle Example | Puzzle example shows how to enable drag and drop with a custom model to allow items to be transferred between a view and another widget
License Wizard Example | License Wizard example shows how to implement complex wizards in Qt
Lighting Effect Example | Demonstrates how to apply effects on items in the view
Line Edits Example | Line Edits example demonstrates the many ways that QLineEdit can be used, and shows the effects of various properties and validators on the input and output supplied by the user
MDI Example | MDI example shows how to implement a Multiple Document Interface using Qt's QMdiArea class
Main Window | Main Window example shows Qt's extensive support for tool bars, dock windows, menus, and other standard application features
Menus Example | Menus example demonstrates how menus can be used in a main window application
Mouse Button Tester | 'Mouse Button Tester' example demonstrates how to reimplement mouse events within a custom class. You can also use this program to verify that Qt is actually receiving mouse events from your mouse
Move Blocks Example | Move Blocks example shows how to animate items in a QGraphicsScene using a QStateMachine with a custom transition
Movie Example | Movie example demonstrates how to use QMovie and QLabel to display animations
Order Form Example | Order Form example shows how to generate rich text documents by combining a simple template with data input by the user in a dialog
Pad Navigator Example | Demonstrates how to create animated user interface
Painter Paths Example | Painter Paths example shows how painter paths can be used to beuild complex shapes for rendering
Part 1 - Designing the User Interface |
Part 2 - Adding Addresses |
Part 3 - Navigating between Entries |
Part 4 - Editing and Removing Addresses |
Part 5 - Adding a Find Function |
Part 6 - Loading and Saving |
Part 7 - Additional Features |
Path Stroking | Path Stroking example shows various types of pens that can be used with QPainter
Ping Pong States Example | Ping Pong States example shows how to use parallel states together with custom events and transitions in The State Machine Framework
Pixelator Example | Pixelator example shows how delegates can be used to customize the way that items are rendered in standard item views
Plug & Paint Basic Tools Example | A plugin providing the basic tools for painting functionality
Plug & Paint Example | Demonstrates how to extend Qt applications using plugins
Plug & Paint Extra Filters Example | A plugin providing the extra filters
QRegularExpression Example | QRegularExpression example shows how regular expressions in Qt are applied to text by providing an environment in which new regular expressions can be created and tested on custom text strings
Regular Expressions Example | Regular Expressions (RegExp) example shows how regular expressions in Qt are applied to text by providing an environment in which new regular expressions can be created and tested on custom text strings
Rogue Example | Rogue example shows how to use the Qt state machine for event handling
SDI Example | SDI example shows how to create a Single Document Interface. It uses a number of top-level windows to display the contents of different text files
Screenshot Example | Screenshot example shows how to take a screenshot of the desktop
Scribble Example | Scribble example shows how to reimplement some of QWidget's event handlers to receive the events generated for the application's widgets
Settings Editor Example | Settings Editor example shows how Qt's standard settings support is used in an application by providing an editor that enables the user to view the settings for installed applications, and modify those that can be edited
Shaped Clock Example | Shaped Clock example shows how to apply a widget mask to a top-level widget to produce a shaped window
Simple Anchor Layout Example | Demonstrates anchor layout on a graphics view scene
Simple DOM Model Example | Simple DOM Model example shows how an existing class can be adapted for use with the model/view framework
Simple Tree Model Example | Simple Tree Model example shows how to use a hierarchical model with Qt's standard view classes
Simple Widget Mapper Example | Simple Widget Mapper example shows how to use a widget mapper to display data from a model in a collection of widgets
Sliders Example | Sliders example shows how to use the different types of sliders available in Qt: QSlider, QScrollBar and QDial
Spin Box Delegate Example | Spin Box Delegate example shows how to create an editor for a custom delegate in the model/view framework by reusing a standard Qt editor widget
Spin Boxes Example | Spin Boxes example shows how to use the many different types of spin boxes available in Qt, from a simple QSpinBox widget to more complex editors like the QDateTimeEdit widget
Spreadsheet | Spreadsheet example shows how to create a simple spreadsheet application
Standard Dialogs Example | Standard Dialogs example shows the standard dialogs that are provided by Qt
Star Delegate Example | Star Delegate example shows how to create a delegate that can paint itself and that supports editing
States Example | States example shows how to use the Qt state machine to play animations
Stickman Example | Stickman example shows how to animate transitions in a state machine to implement key frame animations
Style Plugin Example | This example shows how to create a plugin that extends Qt with a new GUI look and feel
Style Sheet Example | Style Sheet Example shows how to use style sheets
Styles Example | Styles example illustrates how to create custom widget drawing styles using Qt, and demonstrates Qt's predefined styles
Sub-Attaq | This example shows Qt's ability to combine the animation framework and the state machine framework to create a game
Syntax Highlighter Example | Syntax Highlighter example shows how to perform simple syntax highlighting
System Tray Icon Example | System Tray Icon example shows how to add an icon with a menu and popup messages to a desktop environment's system tray
Tab Dialog Example | Tab Dialog example shows how to construct a tab dialog using the QTabWidget class
Tablet Example | This example shows how to use a Wacom tablet in Qt applications
Tetrix Example | Tetrix example is a Qt version of the classic Tetrix game
Text Codecs Example | How to import and export text using text codecs
Text Edit | Text Edit example shows Qt's rich text editing facilities in action
Tool Tips Example | Tool Tips example shows how to provide static and dynamic tool tips for an application's widgets
Traffic Light Example | Traffic Light example shows how to use The State Machine Framework to implement the control flow of a traffic light
Transformations Example | Transformations example shows how transformations influence the way that QPainter renders graphics primitives
Tree Model Completer Example | Tree Model Completer example shows how to provide completion facilities for a hierarchical model, using a period as the separator to access Child, GrandChild and GrandGrandChild level objects
Trivial Wizard Example | Trivial Wizard example illustrates how to create a linear three-page registration wizard using three instances of QWizardPage and one instance of QWizard
Two-way Button Example | Two-way button example shows how to use The State Machine Framework to implement a simple state machine that toggles the current state when a button is clicked
Undo Framework | This example shows Qt's undo framework in action
Undo Framework Example | This example shows how to implement undo/redo functionality with the Qt undo framework
Validators Example | Validators example shows the signal emission behavior of input validators
Vector Deformation | Demonstrates how to manipulate the elements of a QPainterPath
Weather Anchor Layout Example | Demonstrates anchor layout on a graphics view scene
Widgets Tutorial - Child Widgets |
Widgets Tutorial - Creating a Window |
Widgets Tutorial - Nested Layouts |
Widgets Tutorial - Using Layouts |
Wiggly Example | Wiggly example shows how to animate a widget using QBasicTimer and timerEvent(). In addition, the example demonstrates how to use QFontMetrics to determine the size of text on screen
Window Flags Example | Window Flags example shows how to use the window flags available in Qt

## Qt XML

DOM Bookmarks Example | Provides a reader for XML Bookmark Exchange Language files
QXmlStream Bookmarks Example | Demonstrates how to read and write to XBEL files
SAX Bookmarks Example | Demonstrates how to read XBEL files
XML Stream Lint Example | A commandline tool reading from an input file and writing to the standard output file