Qt 6 C++ GUI Development for Beginners : The Fundamentals (Udemy.com)
Build Cross Platform Desktop Applications and Run Them on Windows, Mac and Linux. Build once, Run Everywhere!
Created by: Daniel Gakwaya
Last updated September 2025
What you will learn
- The fundamentals of working with Qt to build C++ Gui Applications
- Working with Qt Widget Classes
- Working with Dialog Classes
- Using the Qt Resource System
- Styling Qt Applications
- Working with Networks to fetch HTTP Data
- Working with the File System
- Model View Architecture
How it compares
Against the other 86 rated Udemy courses in C++ on CourseDuck:
- Rating4.5 out of 5higher than 51% of them
- Reviews606#52 of 87 by number of reviews
- Length18.9 hourslonger than 74% of them
- Last updatedSeptember 2025more recently than 67% of them
Course Description
Welcome to Qt 6 C++ GUI Development for Beginners.
Qt is a cross platform application development framework. It can be used to build Graphical User interfaces that can run on Windows, Mac Linux , mobile platforms like android and ios, even embedded devices.
This course will focus on using Qt Widgets to build robust cross platform desktop applications capable of running well on major desktop Operating Systems like Windows , Mac and Linux.
While Qt Widgets can technically run both on mobile and embedded, it's better and less painful to use QML, another technology provided by the Qt framework. If you want to target mobile and embedded, then please check our courses on QML and Qt Quick. This course doesn't QML , Mobile or embedded!
The course assumes no prior knowledge of Graphical User Interface Development and even provides a C++ refresher crash course for those in need of a helping hand to get up and running with C++ within the Qt environment. By the time you are done with the course, you'll not only be armed with knowledge you could use to build basic to intermediate Graphical user interfaces, but you will also have enough momentum to use the documentation to even learn more on your own. As with my other courses, I use every chance I get to show you how to use the documentation to find solutions on your own and faster.
Let's take a look at the content of the course.
We start with a complete beginner to both C++ and Qt in mind, and we take you through the the process of getting your environment set up on your platform of choice :
We do a live install of Qt Creator on Windows
We do a live install of Qt Creator on Linux
We guide you though how you would install Qt Creator on a Mac
We then take you on a tour of the C++ programming language, covering the concepts deemed important to start working with Qt to build your shinny GUI applications. You don't need to be a C++ wizard to start writing your applications using Qt. One of the goals behind Qt itself is to be as easy to use as possible, helping you to focus on your application logic rather than the C++ complex plumbing. This does not mean that you can do with zero C++ knowledge though. That's why we take you on a tour to cover the basic concepts of the language covering topics like:
Running your first console application and understanding the main function
Streams that help you write and read data from your C++ applications
Variables and Data Types
Basic C++ Operators and Control flow where among other things you learn about if clauses and loops
Build an app to guess numbers and put together the concepts learned so far
C++ Functions
C++ classes
Building your first Qt C++ GUI Application
Building a GUI Version of your Number guessing game
We then visit the fascinating concept signals and slots in Qt where you learn the most flexible way to respond to events :
We'll explore lambda functions in C++ in general, we'll need them to use their SIGNAL SLOT syntax
We explore different ways to connect signals to slots in Qt
We then do a concept enforcing demo for you to try them out
Next we dive in the Qt Widgets section and visit some of the most important widget classes in Qt :
QWidget
QMainWindow
QMessageBox
QPushButton
QLineEdit
QTextEdit
QLabel
QHBoxLayout, QVBoxLayout, QGridLayout
We visit size policies and stretches and how they help tie the knots in your layouts
QCheckBox and QRadioButton
QList
QComboBox
QListWidget
QTabWidget
QMenu, QToolBar, QAction
Dialogs are explored next , we look at QDialog and how to build your own custom dialog class from scratch , QDialogButtonBox, QMessageBox, QFontDialog, QFileDialog, QInputDialog and how they add a layer of interactivity to your Qt GUI applications.
We then go on and explore how to work with the Qt Resource System , Styling your Qt applications with QStyle, QPalette and Style Sheets, Saving your application settings with QSetting, Working with Files and Directories using QFile and QDir, working with the network capabilities of Qt where we :
See the different classes that are available to work with networks in Qt
Build an application to download web pages in our Qt Applications
Build an application to consume Rest APIs in your Qt Applications
and we wrap up the course looking at the Model View Architecture of the Qt framework where we learn about classes like
QListWidget
QTableWidget
QTreeWidget
QListView
QTableView
QTreeView
QStandardItemModel
QAbstractItemTableModel
QAbstractItemListModel
QStringListModel
and much more!
Qt has quite a huge user base and there are thousands of projects using both open source and commercial, including the one I am using to record this video right now. If you want to build cross platform graphical user interface applications using C++, this course is designed with the skill, patience and depth, needed to get you there as effisciently as possible. Please check out some of the preview videos and let's get you started building cross platform GUI applications using C++ and Qt 6.
Instructor Details
- 4.5 Rating
606 Reviews
Daniel Gakwaya
Daniel is a Senior Software Engineer at Blikoon Technologies. He has been writing software since 2011 and Qt is one of his favorite frameworks. Many of his cross platform Qt based projects are completed and out there on the market. Autodidact by nature ,he has a passion for learning new things and loves sharing knowledge with others. Especially people new to the dark art of software development.
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Reviews
By Marcos Chamosa Rodríguez on 7/27/2026
The instructor delivers the lectures in a somewhat chaotic manner, and it's clear some things weren't prepared in advance. For example, they mention sometimes not knowing how things work before testing them if they work -- none of these things are actually obscure, but could have been investigated easily during the prep time for the lecture. It does not, however, interfere much in the explanation of what the instructor is setting out to explain, and in that sense I think the job is fairly adequate. It has been useful as an initiation into the framework. I also feel like the often very long explanations of the code as a preamble before showing what it does or how to do it slows down the pace a lot and makes it less engaging. There is a sense that the instructor is trying to get through it as fast as possible, as if even they consider it tedious, but it's just a subjective impression and I could be wrong. It is, nonetheless, how it comes across to me. In any case, it has been useful to me, so I'm not going to tell anyone not to get it, because it's a decent introduction into how to use the Qt Framework along with C++ to create user interfaces, though if you have attention deficits, I would say it might not be the best fit for you.
By Jose Manuel Gamez Miranda on 12/15/2025
The core content of the course is OK, however it is unnecessarily long by a lot. The course could easily be half the current duration or less if it was properly trimmed, edited and optimized. There is too much repetition, unnecessary or out-of-scope comments, "summaries" that don't add any value, mistakes that were not edited out, etc. With the current duration a complex application could've been built upon on the same project over several lessons, instead you are left with many barebones applications where the author insists on creating every single project from scratch for no good reason (some are justified as they are different types of projects but they are less than a handful, and it's just too many of them that are exactly the same to give a pass). I had to watch most of the course in 1.5x-2x speed to not waste so much time. On the C++ side of things, unlike with Qt, I do have experience and noticed the C++ code was messy and weird, having seen that, I would not watch or recommend any of the C++ courses from the author.
By Zo Alfeqar Mulla on 7/22/2025
This course is truly great and stands out among others! The instructor’s style is engaging and enjoyable — he explains concepts in a very clear and effective way, which makes learning Qt programming both fun and accessible. I strongly recommend this course to anyone who wants to learn Qt development, whether you're just starting or looking to strengthen your skills. The teaching quality is excellent, and the explanations are easy to follow and highly informative. I sincerely hope the instructor creates more courses in the future — his teaching style is extremely helpful and valuable for those who want to learn.
By Hasnul Aidit on 9/12/2023
This course is really good and i learnt something new from this course. I think Daniel should make continuity course for qt6 widget, qt6 quick, qt6 with IPC, qt6 with networking, database, rest api. I do understand the importance to read the documentation and learn by ourselves, but sometimes we running out of our time, so we need someone to explain/teach to us about something complex so we get the base, and the rest, we should study by our own.
By Richard Roberts on 7/26/2023
This course really inspires you to get started on creating your own projects! The lectures were clear and concise and the instructor was really quick to answer questions and to provide support. To get the most out of this course I recommend reviewing good memory management practices. I also recommend listen to the instructor and do not do the full install, I have good internet but the install took me 22 hours for some reason when downloaded everything. Very impressed and excited for the intermediate course!
By Vincent Allen on 5/9/2023
Overall it is very good. I wish you go a bit more in depth with a handful of projects, not just small demos. It would help solidify the concepts a bit more and make it feel less like I'm getting a speed tour of QT. Also I understand things can be found in the documentation. I get why you say it a lot, because it is important, but It started to get a bit annoying hearing it 5-6 times per lecture. I would rather you mention that something can be found there, then actually show it being used, than just saying "oh there's some stuff there you can go look at."
By Shannon Ware on 4/13/2023
I have spent years trying to become a programmer / developer based on tutorials and online references. I have made some progress, but there was always this sense that if I had a computer science degree, I would know all the things I do not know. The way Daniel teaches, he teaches you everything, why you should do certain things, and not do other things, even if they are technically possible. Daniel's way of teaching gives me a great deal of confidence.
By Colin Sare-Soar on 12/8/2022
Just going through the basic stuff just now but very well explained as in all Daniel's courses. Very good explanation of how widgets work and how to manipulate them programatically instead of just using the ui designer. Now that I have finished the course I can say that it is very comprehensive and the fact that it is just a 'beginners' course highlights just how much there is to learn in the Qt framework. As always, the material was presented very clearly and it was interesting to note the similarities with the PySide 6 course, very similar examples from a different perspective. Excellent and I look forward to the next one - whatever that may be :-)
By Michael Roach on 11/29/2022
Instructor is experienced but keeping it simple. Instruction is clear and understandable. Lectures are paced well. Not to much explanation and not too much to fast either. Lessons are broken up appropriately. This makes the subject seem simple. Proper repetition is employed throughout the course. This is probably one of the best instructors and courses on programing I have found on this platform yet.
By Tom Betka on 3/31/2022
It seems like a great introduction into Qt6. I've only used Qt5 until now, with QMake, so I'm very interested into learning what's new with Qt6 and CMake. I do have one complaint though: Are these videos not available in 1080p resolution? The maximum resolution I'm seeing is 720p, which is sub-optimal given that it's the year 2022. EDIT: THANKS(!!!) for making the 1080p resolution available. It's much better now!
Quality Score
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Overall Score : 90 / 100










