We can also restore the geometry of a PyQt window using its geometry property and the restoreGeometry () method. 1, 99. The book includes - 665 pages of hands-on PyQt6 exercisesMultithreading PyQt6 applications with QThreadPool was published in tutorials on April 15, 2021 (updated August 11, 2022 ) multithreading responsive gui threading qt pyqt pyqt6 concurrency performance pyqt6-concurrency python qt6. python. We will develop a simple windowed. PyQt is one of the best cross-platform interface toolkits currently available; it's stable, mature, and completely native. Slots and Signals. 6. ZetCode's PyQT6 tutorial. py. To install it run: pip install PyQt6. ZetCode's PyQT6 tutorial. PyQt6, PySide6, PyQt5 and PySide2 Books -- updated for 2022! Hello! Today I have released new digital editions of my PyQt5, PyQt6, PySide2 and PySide6 book Create GUI Applications with Python & Qt. The upgrade path from PyQt5 to PyQt6 is fairly straightforward, with one main gotcha. Here is a simple example of a Hello World application in PySide6: When you execute it the code, the application will look like: For a widget application using PySide6, you must. Learn how to use them in your apps. Building desktop applications to make data-analysis tools more user-friendly, Python was the obvious choice. Inside your clock folder create an empty file named main. Watch the following screencast —. We'll look at the basic building blocks of PyQt6 applications — Widgets, Layouts & Signals and learn how PyQt6 uses the event loop to handle and respond to user input. This is the 5th Edition of Create GUI Applications with Python & Qt , updated for 2022 & PyQt6 . Starting with Tk, later moving to wxWidgets and finally adopting PyQt. This tutorial is also available for PySide6 , PyQt6 and PySide2. PyQt6 Tutorial — QGraphics Framework. Using QProcess to run external programs. I've implemented the application with drag & drop, exchanging the position of. It is implemented as more than 35 extension modules and enables Python to be used as an alternative application development language to C++ on all supported platforms including iOS and Android. python. The user of this e-book is prohibited to reuse, retain, copy, distribute or republish any contents or a part of contents of this e-book in. A Python Book A Python Book: Beginning Python, Advanced Python, and Python Exercises Author: Dave Kuhlman Contact: dkuhlman@davekuhlman. There is a development snapshot ( ChangeLog) that can be installed from the local PyPI server. PySide, also known as Qt for Python, is a Python library for creating GUI applications using the Qt toolkit. Qt6 release series. The question about QtDesigner based codes!!!. You can trigger behaviors in response to user input, such as button presses or text input, or events in your own code. 9 in a separate directory and use PyQt6 tools. PyInstaller bundles a Python application and all its dependencies into a single package, on Windows, macOS and Linux. On the left part, you'll need a QListWidget and on the right part a QStackedWidget and. This guide is also available for Linux and Windows. Building desktop applications to make data-analysis tools more user-friendly, Python was the obvious choice. Thanks for the info! Over 10,000 developers have bought Create GUI Applications with Python & Qt! For a complete guide to building GUI applications with Python, see our. QtWebEngineWidgets, the new browser API in PyQt 5. python gui qt. The book contains 600+ pages and 200+ complete code examples taking you from the basics of creating PyQt. 60 mins ($195) More info. In PyQtGraph this can be done using the . EnumName. Starting from the very basics, this modern PyQt6 book takes you on a tour of the key features of PyQt6 you can use to build real-life applications. Create GUI Applications with Python & Qt. 23. For some applications, just renaming the imports from PyQt5 to PyQt6 will be enough to convert your application to work with the new library. Simplified page model and asynchronous methods. Plus, an initial perusal reveals material that is inaccessible, does not run and is outdated. Defining custom slots and signals uses slightly different syntax between the two libraries. This is a free set of icons from Yusuke Kamiyamane, a freelance designer from Tokyo. The complete code is shown below for both the main. NB: Aug 2021, New PyQt6 book available. Qt6 release series. This tutorial is also available for PySide6 , PySide2 and PyQt5. Since Qt will add back QtWebEngine and QtWebView in Qt 6. This book will guide you through the basics of PyQt6 and help you build your first GUI. g. It is the result of combining the versatile Python language with the powerful Qt library. Click "Add Folder…". Multithreading PyQt5 applications with QThreadPool. Open the installer to start the installation. To do this the attribute you want to change must be defined as a Qt property. setAutoDelete (True) so the thread is deleted automatically upon exit. 2. For example, if we want to use the name. In PyQtGraph this can be done using the . Building desktop applications to make data-analysis tools more user-friendly, Python was the obvious choice. Both Windows and Linux are supported. PyQt6 Book (Fitzpatrick) PyQt5 Book (Fitzpatrick) PyQt5 Book (Herrmann) PyQt4 Book (Summerfield) PyQt3 Book (Rempt) Tools; Eric IDE; Mu Python Editor; fman Build System; Support. Checkboxes typically have a square shape looking like a checkbox on a paper form. Displaying tabular data in Qt ModelViews. I know you asked for PyQt6, but feel free to also look at PySide6. This update follows the 4th Edition of the PyQt5 book updating all the code examples and adding additional PyQt6-specific detail. PySide6 is a Python binding of the cross-platform GUI toolkit Qt. Learn GUI application development from the ground up by building simple projects that teach the fundamentals of using PyQt6. After install is finished, you should be able to run python and import PyQt6. This is the 2nd Edition of Create GUI Applications with Python & Qt6, updated for 2022 & PyQt6. First create a new method on the MainWindow named add. Our own PyQt6 tutorial takes you from the absolute basics of GUI development concepts to building relatively complex applications. Show check boxes for boolean values. Go ahead and create a new Python file in your working directory. In Qt toolbars are created from the QToolBar class. Starting with a basic window on your desktop, we'll work step by step towards building professional apps you can be proud of. This book is perfect for the beginner who just wants to dabble and will serve as a motivator for further exploration for those interested in longer term use of PyQt6. Using Python & Qt6 you can create fully functional desktop apps in minutes. Signals (and slots) allow you to connect disparate parts of your application together, making changes in one component trigger behavior in another. zip. Just ham, no spam. If you open the Showcase view (press F4) you will see your app installed. Once the text has been placed, the text object itself doesn't exist. Adding a toolbar. python. Building desktop applications to make data-analysis tools more user-friendly, Python was the obvious choice. Building desktop applications to make data-analysis tools more user-friendly, Python was the obvious choice. It's a great way to create professional and portable apps. Building desktop applications to make data-analysis tools more user-friendly, Python was the obvious choice. Let's start by adding a toolbar to our application. 3. This is a question for Martin Fitzpatrick specifically. Finally, the . Even just a porting guide from PyQt5/PySide2 to PyQt6/PySide6 would be a wonderful thing. GUI freezing while updating (result from QRunner) was written by Martin Fitzpatrick . The default solution to this is to keep an. Select the macOS package under the latest version of Qt. PyQt QListWidget. This 2nd edition includes updated code, programs, and new chapters to. By using the Graphics View via PyQt you get access to this highly performant graphics layer in Python. I figured out that if I add self. The wheels will automatically install copies of the corresponding Qt libraries. Qt itself has androiddeployqt tool, but it works, as far as i can tell, with qmake/cmake projects and not with python applications using pyqt. This book is intended as an introduction to PyQt6 for developers who are familiar with Python but new to GUI programming or PyQt6 specifically. Source Packages. coupon_code ]] Reusing an external window In this first example we're creating a new window for every link , rather than creating a new window if none exists and then sending all subsequent link clicks to that same window. PyQt6 Tutorial PyQt is a Python library for creating GUI applications using the Qt toolkit. The 1st argument is the minimum value and the 2nd is the maximum. Welcome to the world of PyQt6, a powerful and versatile GUI (Graphical User Interface) toolkit for Python. Type pip install pyqt6 and press. Therefore, you need to install Python 3. As of Qt 5. Make dashboard UIs easier to use with widget search & text prediction. 4. To follow best practices in your development process, you can start by creating a virtual environment and then installing PyQt. Note that if you have Python 3. The hands-on guide to creating GUI applications with Python gets a new translation. Connect button presses to actions in your apps with Signals, Slots & Events; Take a look at Widgets available in PyQt6; Arrange widgets together using Layouts to build real applications. PyQt6 Book (Fitzpatrick) PyQt5 Book (Fitzpatrick) PyQt5 Book (Herrmann) PyQt4 Book (Summerfield) PyQt3 Book (Rempt) Tools; Eric IDE; Mu Python Editor; fman Build System; Support. Read for free here and start learning Qt 6. Note that if you have Python 3. 6+ - Code free to reuse in your own projects Contents PyQt6 Widgets Signals, slots & events GUI Layouts Toolbars & Menus PyQt6 Dialogs, including file dialogs, warning and custom dialogs. First we'll create a series of simple windows on your desktop to ensure that PyQt is working and introduce some of the basic concepts. Martin Fitzpatrick has been developing Python/Qt apps for 8 years. It was originally developed to create PyQt, the Python bindings for the Qt toolkit, but can be used to create bindings for any C or C++ library. Now you'll find lots of PyQt5 and PyQt6 tutorials available online. Building desktop applications to make data-analysis tools more user-friendly, Python was the obvious choice. 9 at the time of writing this tutorial. Following is what you need for this book: If you’re an intermediate Python programmer wishing to enhance your coding skills by writing powerful GUIs in Python using PyQT, this is the book for you. The PyQt6 edition and PySide6 edition of the Create GUI Applications book has just been released! If you have bought the PyQt5 or PySide2 editions of the book you have access to all versions, including this update -- just go to your account at Enjoy! This is a straight conversion of the latest PyQt5 & PySide2. Downloads for Python GUI programming books. Hi tcarson4344. Creating searchable widget dashboards was published in tutorials on February 06, 2021 (updated November 02, 2023 ) pyqt6 widget filter search qt pyqt python qt6. This can then be imported into your app as for any other Python file or module. (Oct 2023) 279. Learn about drawing graphics bitmap primitives. Starting with Tk, later moving to wxWidgets and finally adopting PyQt. Preview the form. This is the 5th Edition of Create GUI Applications, updated for 2021 & PyQt6 Starting from the very basics, this book takes you on a tour of the key features of PyQt6 you. 4. So I sat down for 150 hours and wrote this book. From basics to complete apps. • Explain all the basics you need to get started. Picking the correct license for your software is an essential step in ensuring your work is protected while giving your users freedom to use the tool effectively. MatchFlags "flags" object which is what determines how we search. Here is a minimal working example. Welcome to Beginning PyQt: A Hands-on Approach to GUI Programming. Glenn Breeden wrote I am learning Python and Qt and am interested in creating. We will start from where we got to in the previous tutorial. Learn how to use them in your apps. The example below shows this in action on a simple PyQtGraph plot. Starting from the very basics, this modern PyQt6 book takes you on a tour of the key features of PyQt6 you can use to build real-life applications. stationselection here, so it should be fairly straightforward. I was interested in using Qt from Python, but if the "hello world" code example is giving me errors, i doubt I will get much help out of the rest of the book other than a massive headache of errors. 00. Want to create GUI applications with Python? Take your first steps building an app with Tkinter Build your first application in minutes using Python's built-in GUI library. In the previous tutorial we covered an introduction to the Model View architecture. Build larger applications and break the steps into smaller parts for deeper understanding. • 5 days ago. QLabel. Answers to our users most frequently answered questions, from licensing, packaging and libraries, to PyQt tips and tricks. The set contains 3,570 icons and is a great way to add some nice visual touches to your application without much hassle. Use custom data stores and sync widgets automatically, allowing you to focus on the logic. Part of Mobile Development Collective. There is covered with some more examples in the book's QResource chapter. 6+ - Code free to reuse in your own projects Contents PyQt6 Widgets Signals, slots & events GUI Layouts Toolbars & Menus PyQt6 Dialogs, including file dialogs, warning and. 15. If you want control over all aspects of UI elements, PyQt is what you need. The hands-on guide to creating GUI applications with Python gets a new translation. The latest version PyQt6 -- based on Qt 6 -- was released in 2021 and the library continues to be updated. Martin Fitzpatrick has been developing Python/Qt apps for 8 years. Since the PyQtGraph PlotWidget is a subclass of QGraphicsWidget (and therefore QWidget) you can use the standard methods. T Carson wrote I found some code with an example of an abstract. They can be used to provide warnings and information, or to request input and settings. Finally, once your application is ready to be released, discover how to package it up into professional-quality installers, ready to ship. Format: PDF, Mobi. You can build a grid layout with Qt Designer in the same way as for other layouts. The exec_() and print_() methods have been removed entirely from PyQt6. while self. tar. Last updated 16 March 2023. Since GUIs are entirely visual it's hard to convey what to do through text, so this tutorial is full of step-by-step screenshots. The first step is to select the group of widgets that you want to lay out using a grid layout manager. ui") # Type your file path Ui_MainWindow, QtBaseClass = uic. Now you have made your first GUI app, let's go a step further adding widgets and layouts to build some simple Python UIs. Qtwebengine is actually a great way to get desktop app native integration i used that approach to integrate a custom xterm. Added qRegisterResourceData () and qUnregisterResourceData () to QtCore to help in supporting legacy resource files from. Upgrading from PyQt5 to PyQt6. Pick & mix the courses to solve your problems, or see the complete tutorials . Scenes can contain millions of items, each with their own features and behaviors. Use linked widgets for easy editing. Common Python GUI Questions, Answered. Below we set two ranges, one on each axis. I have some question about QThread example in PyQt6, this problem is normal in pyqt6: QThread: Destroyed while thread is still running. For a complete guide to desktop application development with Python & PyQt, see the PyQt5 tutorial and my PyQt5 book Create Simple GUI Applications with Python & Qt. The project has two main components: PySide6, so that you can use Qt6 APIs in your Python applications, and. qml called images. PyInstaller. This complete PySide6 tutorial takes you from first concepts to building fully-functional GUI applications in Python. Learn to create professional applications with PySide6 & Python 3. Commercial. addMenu("&File") assigning the F key as a Alt-shortcut. python. License. This tutorial is also available for PySide6 , PyQt6 and PySide2. python. Also look for issues tagged as Questions in the project. Qt provides a complete plain text editor component widget in the form of QPlainTextEdit. Name Changes. 7Pez, custom skinned Unzip. This tutorial is also available for PySide6 , PyQt6 and PySide2. main. Understand the core concepts of PyQt6 including the event loop, slots and signal, and widgets. canvas = QtGui. For most however, you will need to account for changes in both PyQt and Qt itself. If you're on PyQt 5. This is a functionally terrible unzip application, saved only by the fact that you get to look at a cat while using it. To use a . Created by Riverbank Computing, PyQt is free software (GPL licensed) and has been in development since 1999. The first step is to select the group of widgets that you want to lay out using a grid layout manager. python. table = QTableView () I need to do this the retrieve the rows selected by the user: and then for example to print the contents of the 2nd column of the selected rows: for index in indexes: print (self. In the first line of the code, we import Tk and ttk from the tkinter package. 44. It is implemented as more than 35 extension modules and enables Python to be used as an alternative application development language to C++ on all supported platforms including iOS and Android. Qt Designer is a Qt tool that provides you with a what-you-see-is-what-you-get (WYSIWYG) user interface to create GUIs for your PyQt applications productively and efficiently. This tutorial is also available for PyQt6 , PySide2 and PyQt5. pause=True. With this book you get the benefit of that experience & save yourself the pain! Lifetime updates — you get new editions for free. Helpfully,. Learn the fundamental. Ltd. pyqt6 pyside6 qt6 app command-line python qt. qrc file, copying their data (and resource name) into a Python data structure. With the help of PyQt6 (it’s latest version) we can create modern, portable and stylish GUI’s for our Python. This is the 2nd Edition of Create GUI Applications with Python Qt6, updated for 2022 PyQt6. The line below is invalid Python, since Python syntax only allows numbers to have a single decimal point in them (and no commas). Shiboken6, a binding generator tool, which can be used to expose C++ projects to Python, and a Python. Allowing users to update the data in a model view. Remeber last saved directory with QFileDialog was written by Martin Fitzpatrick . py. If you remove the widget from the layout, it's parent is not automatically cleared. Will there ever be a book about PyQt6 and/or PySide6? I want to port my code to version 6, but I have a lot of issues. As you start to build more complex applications with PyQt6 you'll likely come across issues keeping widgets in sync with your data. The wheels will automatically install copies of the corresponding Qt libraries. But my design comes from Qtdesigner. import sys. tell the QPropertyAnimation which object we want to animate, here self. This simplifies running Python code in the background, avoiding the hassle of creating a QRunnable object for each task. Visit Advanced PyQt5 e-book, read PyQt6 tutorial, or list all PyQt tutorials. Learn the fundamental building blocks of PyQt applications —. Will update this tutorial to include the full code to start with as this is very confusing. The widget will remain inside the window, near it's original position. docs/. You can skip elements, and they will be left empty. We will start from where we got to in the previous tutorial. Asking for Help Mailing Lists PyQt Wiki. The plotting itself requires your Python code + the conversion (through PyQt code) to the graphics scene. This book is intended as an introduction to PyQt6 for developers who are familiar with Python but new to GUI programming or PyQt6 specifically. In your example is mainbox a layout, or a widget? If you can post your ui file here, I can take a look at it. Extending PyQt6 Signals; Working with relative paths, resources; System tray & Menus; Threading, thread pools & processes, QThread; Plotting with PyQtGraph & matplotlib; Packaging & distribution of PySide6 apps on Windows, macOS & Linux; Example PySide6 apps; The book includes. CrossCursor self. Beginning PyQt: A Hands-on Approach to GUI Programming with PyQt6 - Kindle edition by Willman, Joshua M. The window will have a title and a. 0, PyQt6-Charts v6. pyqtdeploy works by taking the individual modules of a PyQt application, freezing them, and then placing them in a Qt resource file that is converted to C++ code by Qt's. PyQt6 book (5th Edition, 2022) Create GUI Applications with Python & Qt6 — Build modern GUIs with Python Tired of piecing together incomplete and out of date examples? Looking for a book that answers real problems with modern solutions? I've been teaching PyQt for 8 years. Therefore, you need to install Python 3. Finally, once your application is ready to be released, discover how to package it up into professional-quality installers, ready to ship. This is the 5th Edition of Create GUI Applications, updated for 2021 & PyQt6. This book is intended as an introduction to PyQt6 for developers who are familiar with Python but new to GUI programming or PyQt6 specifically. 00 $ 39. QPropertyAnimation allows you to change the value of an attribute of an object from a startValue to a endValue over a certain amount of time, and optionally following a custom easingCurve. You can trigger behaviors in response to user input, such as button presses or text input, or events in your own code. Before you start the PyQt5 tutorial you will need to have a working installation of PyQt5 on your system. QMediaPlayer does provide a stream of the audio data which is playing was written by Martin Fitzpatrick . 2 or over Dark Mode is automatic. QtWidgets import QApplication, QWidget. title ( "Window With a Title Bar" ) root. For example, you can install Python 3. PyQt-DataVisualization is dual licensed on all supported platforms under the GNU GPL v3 and the Riverbank Commercial License. For more information. The following screencast shows how we can use Qt Designer to create custom dialogs using the different (default) dialog templates: To create a dialog using a Qt Designer's template, we just need to select the desired template from the New Form dialog and then click on the Create button or hit Alt+R on our keyboard. The complete code is shown below for both the main. Starting from the very basics, this book takes you on a tour of the key features of PySide6 you can use to build real-life applications. That might mean PySide2 won't work. To start you create an instance of the class and then call . There is both one for PyQt 5 and 6. But once the scene is constructed the zooming/panning etc. Displaying tabular data in Qt6 ModelViews was published in tutorials on February 10, 2021 (updated September 13, 2023 ) mvc QTableView modelview excel numpy pandas qt pyqt pyqt6 data-science pyqt6-data-science python qt6. path. Handle command-line arguments with PyQt6/PySide6 was published in faq on March 15, 2023. Open up Qt Creator and you will be presented with the main window. Connect this method to the addButton. i think this is due to the relative path issue try this it works for me with fbs and freeze installers and running. May 23, 2022. and add any folders under dist/app such as the PyQt6 folder and icons. Qt Designer is the Qt tool for designing and building graphical user interfaces (GUIs) with Qt Widgets. The book is the resource I wish I had had when I began working on fman years ago. This is the latest stable release of QScintilla. Click and drag your app across the the Applications folder to install it. It was first released in January 2021. visualstudio. The . Usages are well documented :)Hi @altendky , It appears this project remains very popular and useful to use. Starting with Tk, later moving to wxWidgets and finally adopting. (Also, which version of PyQt5 are you using, and which platform?) Thank you for your reply. Using Qt Designer involves four basic steps: Choose your form and objects. Thank you for this information. So that's good news! Someone on some forum (forgot on which) said that Qt 6. One place where Kivy particularly shines is. qml (QML) files. ui files into . Install PyQt6 on Ubuntu and other Debian-based Linux distributions. The FigureCanvasQTAgg class wraps this backend and displays the resulting image on a Qt widget. You can find them reproduced here in the src/pyqt-official directory. value ()) and use that get the type for the setting. The Qt Creator interface, with the Design section shown on the left. 0 and PySide 6. In Qt, like in most GUI frameworks, widget is the name given to a component of the UI. Then we'll take a brief look at the event loop and how. g. The QNetworkRequest holds a request to be sent with the network manager and the QNetworkReply contains the data and headers returned for a. QWebEngineView change anchor behavior was written by Martin Fitzpatrick . Learn the fundamental building blocks of PySide6 applications — Widgets, Layouts & Signals and learn how PySide uses the event. The effect of this architecture is that Qt is unaware of the positions of lines and other plot elements — only the x, y. In the tutorials on this site and in my books I recommend using the fugue icons set. table. PyQt und PySide: GUI- und Anwendungsentwicklung mit Python und Qt Author: Peter Bouda Learn GUI application development from the ground up by building simple projects that teach the fundamentals of using PyQt6. PyQt6 Book now available in Korean: 파이썬과 Qt6로 GUI 애플리케이션 만들기. In more technical terms, PyQt6 is a wrapper around the Qt6 library. 3. Qt Creator — Select MainWindow for widget type. PyQt6 Dialogs and Alerts was published in tutorials on November 10, 2021 (updated September 13, 2023 ) dialogs qdialog qt pyqt pyqt6 foundation python qt6 pyqt6-foundation. tar. Built on top of PyInstaller it wraps some of the rough edges and defines a standard project structure which allows the build process to be entirely automated. Start PyQt6 TutorialLearning pyqt5 eBook (PDF) Download this eBook for free. In-depth guides to building user interfaces with Python. Create customized table views with conditional formatting, numpy and pandas data sources. Book description. Sometimes you want to be able to pass command line arguments to your GUI applications. He even agreed to write the foreword. Here, I made custom implementation (3 ways), I used the third one in the demo, feel free to test them and use whichever one you like :smiley: . The book includes usability and architectural tips to help you build maintainable and usable PyQt6 applications from the start. For Reviewers. Install PyQt6 via apt. Starting. The pip show pyqt6 command will either state that the package is not installed or show a bunch of information about the package, including the location where the package is installed. If you're migrating to PyQt6 from PyQt5, notice that QAction is now available via the QtGui module. Connect button presses to actions in your apps with Signals, Slots & Events; Take a look at Widgets available in PyQt6; Arrange widgets together using Layouts to build real applications. The addItem function adds a new item at the end of the list. pip3 install pyqt5. You can use this rename icons to something more logical or simpler in your app, while keeping the original name externally. This book will guide you through every concept necessary to create fully functional GUI applications using PyQt, with only a few lines of code. Publisher: Martin Fitzpatrick. Learn the fundamental building blocks of PyQt applications — Widgets, Layouts & Signals and. So we will choose the scroll area widget and add it to our layout as below. 1, PyQt6-DataVisualization v6. QtGui import QTextCursor from PyQt5. 1) has been uploaded now. Provided scripts are converting . The user can run the packaged app without installing a Python interpreter or any modules. Hear what’s new in the world of Python Books. As easy as. A checkbox is an option widget that can be switched on (checked) or off (unchecked) by the user. In this case this is the Window itself. py named main. This is the 2nd Edition of Create GUI Applications with Python & Qt6, updated for 2022 & PySide6. by Martin Fitzpatrick Last updated 13 September 2023 PyQt5 Example applications. PyQt5. Understanding the Intricacies of Python Classes. The book includes - 780 pages of hands-on PyQt6 exercises - 300+ code examples to experiment with - Includes 4 example apps - Compatible with Python 3. setYRange () methods. PyQt6 Tutorial — QGraphics Framework. QNetworkAccessManager. Indeed, it is a large PyQt application that you plan to design. Python PyQt6 tutorial is an introductory tutorial to GUI programming with Python and PyQt6 library. # Install PyQt6 on macOS or Linux. PyQt6 is a Python GUI framework for creating GUI applications using the Qt toolkit. The other issue is probably related to QTBUG-88709 and is part of a long series of issues that deal with. A QComboBox can also -.