Introduction tutorial to Qt / QML (Part 01) - Welcome and Introduction to Qt Quick

[@ipavan]

Woahhh, I just finished watching the first video and am so glad I found this, so professional, make more of these please ❤️

[@KDABtv]

Thank you! There are going to be nine modules of this Introduction to Qt/QML series altogether. Next module coming in a few weeks. So stay tuned :)

[@ipavan]

@@KDABtv Surely, I had this thought that there are not enough videos on KZbin for Qt, am really looking forward to watching all the modules

[@eritongomes8110]

This is very good. I'm surprised there are not a lot more viewers. Thanks for sharing! Brazil is love you!

[@KDABtv]

Thank you so much! We're glad that you like our videos! :)

[@grumpytecho.o468]

Woohoo!! QML learning material? Nice! You have a new sub ;)

[@KDABtv]

Right?! Thanks for your support :)

[@valentin3241]

Incredible coach, your explanation is beautiful!

[@mohamedghida9540]

cant till how glad am i for watching such a great video, I have decided to attend all of them the 53 videos...........such a great job

[@KDABtv]

Hi Mohamed! Wow, thank you! That's lovely to hear! :)

[@MatheusCatarino]

Good initiative with excellent content! However, I would like to suggest the possibility of adding human subtitles to facilitate the accessibility of hearing impaired viewers.

[@KDABtv]

Thanks for the suggestion. That is something we are looking to do indeed, also for other languages than English, in time. I'm afraid we can't promise yet when it will be available, though.

[@catsultan949]

They added subs in case you didn't know.

[@atmakurumadan6342]

HI @KDAB ...WOW this was my first step towards learning qml. Thanks for explaining so nicely.

[@KDABtv]

Great! Keep going and good luck! And thanks for watching.

[@quocthebt]

Thanks you very much. Do you have a book about qml or yours tuts?

[@o2blom]

This is very good. I'm surprised there are not a lot more viewers. Lysande !

[@KDABtv]

Hi! :) Thank you very much! We really appreciate it!

[@jakechen6597]

Thanks you very much.

[@jeromelaclavere2977]

Good first video! I searched for a good and reliable tuto on QML and, well, I have decided to go with this one. :-)

[@KDABtv]

Thank you for your feedback Jerome! That makes us happy to hear :)

[@halseywalker5015]

Hey , Mr Pedersen ,I encountered this very tricking problem , I subclassed QWidget and overwrite it's paintEvent() , I just draw a rounded rectangle.And I also overwrite the mousePressEvent ,mouseMoveEvent,mouseReleaseEvent, to make sure my Rectangle (which is my class name) can be dragged by mouse. That is it, I did nothing more, just draw a rectangle and make sure it is draggable. Then I create 2 Rectangle and show them in a parent QWidget. They are shown and can be moved, everything looks fine. But when I drag one rectangle above another , the rectangle below painted this blurry gray edge surrounding my dragging rectangle, and after I drag my rectangle away, a scratch left on the rectangle below. May I ask what is the problem.

[@KDABtv]

Hi, Make sure everything affected by the drag (dragged and lower rectangle) is repainted when needed (doc.qt.io/qt-6/qwidget.html#update) We hope this helps.

[@halseywalker5015]

@@KDABtv It is not repainted , and if I call their update() in mouseMoveEvent, this problem is solved . So I have to update or repaint them each time when they are blocked by other widgets ? Is there an easy set function to avoid this ?

[@KDABtv]

@@halseywalker5015 setAttribute(Qt::WA_Hover) will ask Qt to repaint on mouse move automatically. It's not enabled by default for performance reasons as many widgets don't change appearance on hover. That's up to the widget style, which can decide to enable that if needed. We hope this helps.

[@halseywalker5015]

@@KDABtv Ok , thank you for your help

[@stefanmarjanovic4768]

I tried this and my compiler spat out this error: (1 failure) make: *** [xcodebuild-debug-simulator] Error 65 The process "/usr/bin/make" exited with code 2. Error while building/deploying project (kit: Qt 6.3.2 for iOS Simulator) When executing step "Make" When I remove: QQuickView view; view.setSource(QUrl("main.qml")); view.show(); The simulator runs but I can't access my qml files.

[@alienpioneer]

This channel is a gem. Thank you !

[@KDABtv]

Thank you so much! We're really glad you enjoy our content! :)

[@angelicareyes693]

Emocionada por comenzar con este curso!

[@KDABtv]

Fantastic! We are pleased to hear that. Let us know what you think later and good luck!

[@venkateshd1858]

HI Sir am new to QtQML am facing a problem in interacting with qml and C++ can you able help me ??

[@KDABtv]

Stay tuned, we will discuss this topic in later videos in this series.

[@emreiris114]

I like the way you explain stuff. A new sub has come.

[@KDABtv]

Hi Emre! Awesome, thank you very much for watching our videos! :)

[@ngoclevan2061]

I'm from Vietnam. Thank you very much

[@KDABtv]

Hi! thank you for watching :)

[@desarrollou71x72]

Thanks !.. God Bless.. very good tutorial.

[@KDABtv]

Thank you! :)

[@ARNAVJHA-h1u]

Best coach ever!

[@geertvancompernolle2586]

Nowadays, most people explaining QT teach us to use CMake in favour of qmake. Is this indeed the way to go?

[@KDABtv]

Hi Geert! Yes, for new projects use CMake. QMake is still supported but Qt is using CMake internally since Qt 6.0 and it is the recommended build system for new projects.

[@maxim25o2]

Oh, this is old, now is qml from Qt6 and there from qml are big changes, like cmake, because qmake is deprecated.

[@johnvonachen1672]

qmlscene has been deprecated and probably will not work as it does not work for me at the time of this writing. Try using a tool called qml instead. As in, "qml main.qml". I think this is for the latest, version 6.

[@sumay.s2701]

Really a great video. Thank you (y) Was there any Assignment in the end!? I heard it in beginning but dint find any at the end!

[@KDABtv]

Thank you! You'll find the exercise in part 5 in the series. Here's the direct link kzbin.info/www/bejne/aZeQpp6pYtKVgtU

[@sumay.s2701]

@@KDABtv thank you very much.

[@diyshow888]

@KDAB Hi can you please make a video about how to load QQuickView to iOS UIView in Xcode ? thanks

[@KDABtv]

Hi! Thank you for the suggestion. We have it on our list and will look into it :) Thanks!

[@diyshow888]

@@KDABtv Thank you !

[@unev]

Thank you for sharing your knoweledge! Is it true that I can use qml to create software with gui without using any desktop environment?

[@KDABtv]

Thanks for the feedback, Yevgeny. To clarify your question, do you mean that you don't need a desktop environment to do the development, or that you don't need a desktop environment to run the QML application on the target?

[@AakarshMJ]

is this tutorial outdated? The library mentioned above is missing ? I am using linux?

[@KDABtv]

Hi Aakarsh! Do you mean the example code linked in the description?

[@cialloo1560]

This is a life saver!

[@KDABtv]

Hi Ciallo! Thank you for watching! :)

[@Thirumal-vq5rp]

Qt vs QT quick, can you explain what the differences are?

[@KDABtv]

Hi :) Qt is a library and framework for the development of cross-platform applications mostly in C++ but also in other languages. It is focused on GUI development while also supporting the development of non-GUI applications. Qt is split up in many modules that provide different parts of its feature set. Among them are Qt Widgets and Qt Quick, two different technologies for developing GUI applications.

[@DomanaxTV]

Hi there, these tutorials have been great. One thing though, could you explain how you created that project type? Currently how I am doing it is just loading up the project from the folder that I downloaded of github but it would be great to know how you create it. Cheers! so that is creates these two: .qmlproject and the .qml

[@blackiedk]

If you are using Qt Creator, then simply choose File->New Project, and from there Choose Application (Qt), and then Qt Quick application. It will generate you a relatively basic QML + C++ application.

[@vanpt4832]

@@blackiedk Hi guys, I am beginner learn Qt . And I have a assignment could you give me a solution. Thanks.

[@kelvinasante-bekoe4865]

Just what i was going to comment about.

[@chrischoir3594]

app.exec(0 is a while loop. On Windows it is while( (bRet = GetMessage( &msg, NULL, 0, 0 )) != 0)

[@Yog988]

just amazing ! going well so far....!!!

[@farazahmed1668]

I am a newbie to PyQt5 will learning qml is helpfull for me?

[@KDABtv]

Hi Faraz! Thank you for the question. Whether QML is helpful depends on your targets. QML is really helpful if you're interested in creating beautiful, fluent user interfaces. We will teach in this course that in well designed applications you write only the UI layer in QML while you keep all the logic in C++. It is perfectly possible to substitute C++ with Python and PyQt for this, and the changes required in comparison to the C++-based examples we will show are minimal.

[@彩虹97]

really nice tutorial, thanks a lot.

[@KDABtv]

Hi! Thank you very much! Glad you like them!

[@phamucmanh1750]

Very clear and useful, thank you !

[@subhabhaskaran1827]

Is there good scope for this language

[@hatema]

This is great! I'll turn on notifications for this one.

[@KDABtv]

Glad you like it!

[@shubhamgaikwad9502]

Hi Jesper, can you tell me how to integrate cppcheck in qt creator. Thank you

[@KDABtv]

Hi Shubham! I'm afraid this is a bit beyond the scope of this series. Qt Creator do have direct support for clang-tidy and clazy, so maybe they could be a starting point. Otherwise maybe file a bug report with the qt project to get that checker added too.

[@senthilandavanp]

Thanks

[@KDABtv]

Thank you for watching :)

[@kamilsala86]

qml is cool but only for applications in fullscreen. resizing the window causes a terrible jumping of elements and is ugly :(

[@KDABtv]

There are ways to avoid such issues. Please, keep watching the videos (more modules are going to come) in order to learn more about it.

[@kamilsala86]

​@@KDABtv Your tutorial is great. And thank you for that, and i will watch next modules. In my opinion qml is really great. But what I wrote is a problem when writing nice applications.. bugreports.qt.io/browse/QTBUG-46074 stackoverflow.com/questions/30818886/qml-window-resize-move-flicker

[@KDABtv]

You are right. That is a more complex problem.

[@Chalisque]

The video that led me to search and find this one, and to take QML more seriously, was this video about Musescore 4, and how they went from QtWidgets to QML. I used to have the impression that QML was just a wrapper around QtWidgets. Not so, it seems. Anyway, the Musescore 4 video is here: kzbin.info/www/bejne/h5TXZ3-Bl9OYgbM

[@KDABtv]

great! We hope this series helps you to gain more insights to QML.

[@hrmoose1]

why can't i find a qt tutorial for c, i only find for c++

[@KDABtv]

Hi :) Thank you for your suggestion on the topic of c. While we'll research the idea, we can't promise a specific video in the near future. We appreciate your input and support. Stay tuned for updates!

[@elyesmassoussi4277]

a warning problem appears the moment i try to include even after adding += quick in the pro file can anyone help ?

[@KDABtv]

Hi Elyes! Are you using QT += quick or CONFIG += quick? You can also look at github.com/KDAB/kdabtv at the example code.

[@elyesmassoussi4277]

@@KDABtv yes i m using QT += quick. here s the warning that appears the moment i include stackoverflow.com/questions/60838866/how-can-i-properly-include-the-qtquick-file

[@yashesvi-raina]

how to setup Qt environment for beginner?

[@KDABtv]

Hi! There are already a lot of videos and tutorials on KZbin that guide you step by step on how to set up Qt. We hope this helps!

[@yashesvi-raina]

@@KDABtv Thank you, I did search youtube, and was able to install the environment.

[@Hevletica]

Here is a good starting point: kzbin.info/www/bejne/fmPYlWB3ibF8mqs

[@macros1212]

Nice

[@RommelLagera]

Can anyone explain how he have a bash terminal in Windows?

[@KDABtv]

Hi! Windows starting with Windows 10 has the Windows Subsystem for Linux learn.microsoft.com/en-us/windows/wsl/ We hope this helps.

[@marcpanther7924]

need better mic in 2019!

[@KDABtv]

Noted. Thank you for your feedback!

[@eh6299]

@@KDABtv You also need a better camera which can record in color :)

[@cdunne1620]

@@eh6299 ....I disagree, the clean white theme matches his clean and clear presentation, he is a natural teacher, just say well done, thanks and appreciate his efforts, how easy it is to criticise from your armchair, ...you have yourself a nice day now!

[@eliaspbareia]

How do I install qmlscene on linux?

[@KDABtv]

Hi Elias! It comes with your Qt installation. If you install Qt using the installer, it will be of that versions installations bin directly. That path is not in your path by default, as that would not play well with multiple versions installed side-by-side

[@electrotsmishar]

awesome

[@KDABtv]

Thanks for the feedback, we're glad you are enjoying the series.

[@MiiDev69]

Jesper, what do I do if I love your terrible jokes?

[@chrischoir3594]

QT was poorly thought out

[@waynewenashasa8674]

9158 Emelie Road

[@hatema]

This is great! I'll turn on notifications for this one.