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KDDockWidgets 1.0 has been released! An advanced docking system for Qt

24.09.2020 No comments

The KDDockWidgets 1.0 release is now available!

What is KDDockWidgets?

KDDockWidgets is an advanced docking system for Qt, with features that are not available in QDockWidget. See our first blog post, for a quick introduction and the motivation for a new docking framework.

What’s new in 1.0?

We’ve come a long way since the initial announcement of KDDockWidgets. The 1.0 release represents the culmination of one year of using the library in production for five different huge projects — one year of incorporating real feedback in the form of new features, bug fixes, or simply making the framework more customizable.

We could have tagged 1.0 much sooner, but I gain more personal satisfaction in calling the current state 1.0, as it’s very stable and almost feature-complete. We’re on the verge of stepping on the gas for the Qt Quick port, as there’s very little to add to the Qt Widget API.

Read on, for a few of the highlights of the KDDockWidgets 1.0 release.

Quality

We now have 200 automated tests, accounting for 30% of the codebase. It took a lot of time to get there but now they actually save us time, catching regressions very soon.

We wrote a fuzzer, to test the example app randomly for hours until it crashes. All this with Address Sanitizer enabled so memory violations and leaks don’t escape.

Rewritten layouting engine

For the KDDockWidgets 1.0 release, the layouting engine was factored out into its own reusable library without QWidget dependencies. This will allow sharing 5000 lines of code for the Qt Quick port right off the bat, but also benefits the QWidget codebase a lot, as the new engine is much more flexible. For instance, it was trivial to add support for max-size constraints and honour a bit of QSizePolicy.

Customizable docking indicators

Additionally, KDDW allows users to provide their own docking indicators. This is not just about changing icons or colors, the whole mechanism can be modified.

In the example below, we demonstrate how we created a new docking indicator type called “Segmented Indicators” in just a few hours.

Run kddockwidgets_example -y to see it in action.

Segmented Indicators

MainWindows within MainWindows

You can now dock a main window into another main window, as if it were a dock widget. On top of that, you can even dock floating windows into the inner dock widget if that pleases you.

Not saying you should, but it’s something many people asked. Sometimes, it’s simply because they had this in MFC and wouldn’t be able to complete a port to Qt without it.

In the example below, I show you the “affinity” concept. The yellow dock widgets can only be docked into the yellow main window, but this is optional. If you want, you can dock anything, anywhere.

 

Windows Aero-Snap

Aero-snap is the functionality which maximizes a window when you drag it near the screen’s edges. Typically you loose this feature when using Qt::FramelessWindowHint , but that can be worked around.

For the KDDockWidgets 1.0 release, we even did many improvements for using Aero-snap with Windows with custom title bars. Expect some HDPI fixes for v1.1 too.

Reworked layout save/restore

Layout restoring is now done in two steps. First, everything is loaded and validated. Only if the validation passes do we change the GUI. Before, it was very hard to recover from an error if we were in the middle of the restore.

Save/restore now works better on different HDPI setups. We’ve added the RestoreOption_RelativeToMainWindow, which, when used, will restore the dock widgets in relation to the main window’s size, instead of using absolute values which could have been saved in a different screen size.

More Config.h options

Config::flags() has 5 new options for tuning little details. They are:

  • Flag_AllowReorderTabs
  • Flag_TabsHaveCloseButton
  • Flag_DoubleClickMaximizes
  • Flag_TitleBarHasMaximizeButton
  • Flag_LazyResize

Consult the documentation for more information, but they are pretty self-explanatory :).

ChangeLog

Here is a more comprehensive list of features and improvements in the KDDockWidgets 1.0 release:

  • PySide2 bindings
  • Rewrote the layouting engine, resulting in a huge stability gain and makes it easy to add new features
  • Honour min/max sizes and some QSizePolicy heuristics
  • Lazy resize (resize only when dropping the separator)
  • Native Windows dragging (supporting Aero-snap) improvements
  • Reordering tabs with mouse
  • Partial layout save/restore (affecting only a subset)
  • Double-click on title bar to maximize
  • Optional maximize button on the title bar
  • HDPI: Restoring relative to main window size, instead of absolute geometries
  • Allow to make a dock widget non-closable and non-dockable
  • Show close button on tabs
  • Multiple Main Window support
  • Allowing to dock on different parents
  • Support for affinities, making some dock widgets only dockable on certain main windows
  • 200 unit-tests
  • Fuzzer which found plenty of crashes in the old layouting engine
  • ASAN/UBSAN fixes
  • Double click on separator to distribute equally
  • Hovering over an indicator returns the true size that the dropped widget will get
  • Qt-Namespaced and Static build support
  • Dozens of crash fixes, bugs and much more…

Stay tuned, 1.1 should be out soon!

Visit the KDDockWidgets GitHub page to get the update: https://github.com/KDAB/KDDockWidgets/releases/tag/v1.0.0.

The source code for the KDDockWidgets 1.0 release can be found on GitHub at: https://github.com/KDAB/KDDockWidgets

Tarballs and zipballs for 1.0 are available from: https://github.com/KDAB/KDDockWidgets/releases

Prebuilt packages for some popular Linux distributions can be found at: https://build.opensuse.org/project/repositories/isv:KDAB

Licensing options

For commercial licensing regarding inclusion in proprietary software and/or for tailored support options contact us and ask for a 30-day free trial license.

This blog uses KDDockWidgets as an example for creating Python bindings for your Qt Libraries.  Give it a read if you’re interested in that process.

View our ‘Widgets and more’ video series

Yes, widgets are still alive and kicking. In the many years we have worked with them, we have gathered quite a number of tips and tricks that we’d love to share with you.

Welcome to our brand new video series about...Qt Widgets! Yes, widgets are still alive and kicking. In the many years we have worked with them, we have gathered quite a number of tips and tricks that we'd love to share with you. Whether it's some handy snippet in C++ or a hidden button in a graphical tool, these suggestions will make your development life considerably easier. In this first video, we will show you a few ways to improve your workflow when using a QGridLayout inside Qt Designer. Sounds simple, doesn't it? Well, there are a few subtleties involved. The example code showcased in this video is available here: https://github.com/KDAB/kdabtv All Qt Widgets and more videos: https://www.youtube.com/playlist?list=PL6CJYn40gN6gf-G-o6syFwGrtq3kItEqI About the host: The video is presented by Jesper Pedersen, who started with Qt back when Qt was widgets only and the version was 1.44, which gives him 21 years of experience with Qt. Since 2000 he has taught almost 100 Qt classes, ranging from Qt Widgets to QML. Heck, Jesper even taught a few classes on QTopia Core — Trolltech's initial attempt at creating a phone stack. Today Jesper holds a fancy business title, but that doesn't prevent him from coding both in his job and in his spare time. About KDAB: KDAB offers experienced software experts to help you deliver functional, high-performing and innovative software across embedded, mobile and desktop platforms for projects using C++, Qt, QML/Qt Quick, OpenGL, Qt 3D and more. https://www.kdab.com/software-services KDAB experts regularly take time out to deliver KDAB’s world class training, in-house or at open enrollment courses around the world. We are the market leaders for training in Qt, OpenGL and C++. Contact us to find out more at training@kdab.com or visit our website: https://www.kdab.com/software-services/scheduled-training/ We are about 90 people, located all around the world. Our Head Office is in Sweden and we have other offices in Germany, France, the UK and the USA. https://www.kdab.com/about/contact/
GridLayout in Qt Designer

Welcome to our brand new video series about...Qt Widgets! Yes, widgets are still alive and kicking. In the many years we have worked with them, we have gathered quite a number of tips and tricks that we'd love to share with you.

Whether it's some handy snippet in C++ or a hidden button in a graphical tool, these suggestions will make your development life considerably easier.
In this first video, we will show you a few ways to improve your workflow when using a QGridLayout inside Qt Designer. Sounds simple, doesn't it? Well, there are a few subtleties involved.

The example code showcased in this video is available here: https://github.com/KDAB/kdabtv

The video is presented by Jesper Pedersen, who started with Qt back when Qt was widgets only and the version was 1.44, which gives him 21 years of experience with Qt. Since 2000 he has taught almost 100 Qt classes, ranging from Qt Widgets to QML. Heck, Jesper even taught a few classes on QTopia Core — Trolltech's initial attempt at creating a phone stack. Today Jesper holds a fancy business title, but that doesn't prevent him from coding both in his job and in his spare time.

About KDAB:
KDAB offers experienced software experts to help you deliver functional, high-performing and innovative software across embedded, mobile and desktop platforms for projects using C++, Qt, QML/Qt Quick, OpenGL, Qt 3D and more. https://www.kdab.com/software-services

KDAB experts regularly take time out to deliver KDAB’s world class training, in-house or at open enrollment courses around the world. We are the market leaders for training in Qt, OpenGL and C++.

Contact us to find out more at training@kdab.com or visit our website: https://www.kdab.com/software-services/scheduled-training/

We are about 90 people, located all around the world. Our Head Office is in Sweden and we have other offices in Germany, France, the UK and the USA. https://www.kdab.com/about/contact/

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YouTube Video UEw2Q0pZbjQwZ042Z2YtRy1vNnN5RndHcnRxM2tJdEVxSS41NkI0NEY2RDEwNTU3Q0M2

GridLayout in Qt Designer

Let's revisit Qt Designer once more, this time to discuss combo boxes. Mapping a QComboBox's entry to a specific value is easy in C++, but not so easy when the combo box is populated from within Qt Designer. How do we improve the situation? The example code showcased in this video is available here: https://github.com/KDAB/kdabtv/tree/master/Qt-Widgets-and-more/ComboBoxSetup All Qt Widgets and more videos: https://www.youtube.com/playlist?list=PL6CJYn40gN6gf-G-o6syFwGrtq3kItEqI About the host: The video is presented by Jesper Pedersen, who started with Qt back when Qt was widgets only and the version was 1.44, which gives him 21 years of experience with Qt. Since 2000 he has taught almost 100 Qt classes, ranging from Qt Widgets to QML. Heck, Jesper even taught a few classes on QTopia Core — Trolltech's initial attempt at creating a phone stack. Today Jesper holds a fancy business title, but that doesn't prevent him from coding both in his job and in his spare time. About KDAB: KDAB offers experienced software experts to help you deliver functional, high-performing and innovative software across embedded, mobile and desktop platforms for projects using C++, Qt, QML/Qt Quick, OpenGL, Qt 3D and more. https://www.kdab.com/software-services KDAB experts regularly take time out to deliver KDAB’s world class training, in-house or at open enrollment courses around the world. We are the market leaders for training in Qt, OpenGL and C++. Contact us to find out more at training@kdab.com or visit our website: https://www.kdab.com/software-services/scheduled-training/ We are about 90 people, located all around the world. Our Head Office is in Sweden and we have other offices in Germany, France, the UK and the USA. https://www.kdab.com/about/contact/
Populating a Combobox from Qt Designer

Let's revisit Qt Designer once more, this time to discuss combo boxes. Mapping a QComboBox's entry to a specific value is easy in C++, but not so easy when the combo box is populated from within Qt Designer. How do we improve the situation?

The example code showcased in this video is available here: https://github.com/KDAB/kdabtv

The video is presented by Jesper Pedersen, who started with Qt back when Qt was widgets only and the version was 1.44, which gives him 21 years of experience with Qt. Since 2000 he has taught almost 100 Qt classes, ranging from Qt Widgets to QML. Heck, Jesper even taught a few classes on QTopia Core — Trolltech's initial attempt at creating a phone stack. Today Jesper holds a fancy business title, but that doesn't prevent him from coding both in his job and in his spare time.

About KDAB:
KDAB offers experienced software experts to help you deliver functional, high-performing and innovative software across embedded, mobile and desktop platforms for projects using C++, Qt, QML/Qt Quick, OpenGL, Qt 3D and more. https://www.kdab.com/software-services

KDAB experts regularly take time out to deliver KDAB’s world class training, in-house or at open enrollment courses around the world. We are the market leaders for training in Qt, OpenGL and C++.

Contact us to find out more at training@kdab.com or visit our website: https://www.kdab.com/software-services/scheduled-training/

We are about 90 people, located all around the world. Our Head Office is in Sweden and we have other offices in Germany, France, the UK and the USA. https://www.kdab.com/about/contact/

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YouTube Video UEw2Q0pZbjQwZ042Z2YtRy1vNnN5RndHcnRxM2tJdEVxSS4yODlGNEE0NkRGMEEzMEQy

Populating a Combobox from Qt Designer

Another tip in this series: how to use sessions in Qt Creator. If you find yourself working on a number of projects and you quickly want to switch between them, just use a different session for each one! Sessions will remember open documents, cursor positions, and much more. The example code showcased in this video is available here: https://github.com/KDAB/kdabtv All Qt Widgets and more videos: https://www.youtube.com/playlist?list=PL6CJYn40gN6gf-G-o6syFwGrtq3kItEqI About the host: The video is presented by Jesper Pedersen, who started with Qt back when Qt was widgets only and the version was 1.44, which gives him 21 years of experience with Qt. Since 2000 he has taught almost 100 Qt classes, ranging from Qt Widgets to QML. Heck, Jesper even taught a few classes on QTopia Core — Trolltech's initial attempt at creating a phone stack. Today Jesper holds a fancy business title, but that doesn't prevent him from coding both in his job and in his spare time. About KDAB: KDAB offers experienced software experts to help you deliver functional, high-performing and innovative software across embedded, mobile and desktop platforms for projects using C++, Qt, QML/Qt Quick, OpenGL, Qt 3D and more. https://www.kdab.com/software-services KDAB experts regularly take time out to deliver KDAB’s world class training, in-house or at open enrollment courses around the world. We are the market leaders for training in Qt, OpenGL and C++. Contact us to find out more at training@kdab.com or visit our website: https://www.kdab.com/software-services/scheduled-training/ We are about 90 people, located all around the world. Our Head Office is in Sweden and we have other offices in Germany, France, the UK and the USA. https://www.kdab.com/about/contact/
Sessions in Qt Creator

This video is private.

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YouTube Video UEw2Q0pZbjQwZ042Z2YtRy1vNnN5RndHcnRxM2tJdEVxSS4wMTcyMDhGQUE4NTIzM0Y5

Sessions in Qt Creator

If you're submitting code for a review, there's nothing worse than getting nitpicked because you violated a style guideline of the project. If you're doing the code review, there's nothing more annoying than nitpicking on small code style inconsistencies. This is where clang-format can help you. Clang-format is a tool (based on the clang/LLVM compiler infrastructure) that can automatically reformat your source code. Not only can you run it manually to apply a given formatting, but you can set it up so that it automatically reformats the code when committing into git, or when saving in Qt Creator. The example code showcased in this video is available here: https://github.com/KDAB/kdabtv/tree/master/Qt-Widgets-and-more/clang-format All Qt Widgets and more videos: https://www.youtube.com/playlist?list=PL6CJYn40gN6gf-G-o6syFwGrtq3kItEqI About the host: The video is presented by Jesper Pedersen, who started with Qt back when Qt was widgets only and the version was 1.44, which gives him 21 years of experience with Qt. Since 2000 he has taught almost 100 Qt classes, ranging from Qt Widgets to QML. Heck, Jesper even taught a few classes on QTopia Core — Trolltech's initial attempt at creating a phone stack. Today Jesper holds a fancy business title, but that doesn't prevent him from coding both in his job and in his spare time. About KDAB: KDAB offers experienced software experts to help you deliver functional, high-performing and innovative software across embedded, mobile and desktop platforms for projects using C++, Qt, QML/Qt Quick, OpenGL, Qt 3D and more. https://www.kdab.com/software-services KDAB experts regularly take time out to deliver KDAB’s world class training, in-house or at open enrollment courses around the world. We are the market leaders for training in Qt, OpenGL and C++. Contact us to find out more at training@kdab.com or visit our website: https://www.kdab.com/software-services/scheduled-training/ We are about 90 people, located all around the world. Our Head Office is in Sweden and we have other offices in Germany, France, the UK and the USA. https://www.kdab.com/about/contact/
Using Clang-Format to Ensure Style Guidelines

If you're submitting code for a review, there's nothing worse than getting nitpicked because you violated some style guideline of the project.
If you're doing a code review, there's nothing more annoying than nitpicking on small code style inconsistencies.

This is where clang-format can help us. clang-format is a tool (based on the clang/LLVM compiler infrastructure) that can automatically reformat our source code. Not only we can run it manually to apply a given formatting, but we can set it up so that it automatically reformats the code when committing into git, or when saving in Qt Creator.

The example code showcased in this video is available here: https://github.com/KDAB/kdabtv

The video is presented by Jesper Pedersen, who started with Qt back when Qt was widgets only and the version was 1.44, which gives him 21 years of experience with Qt. Since 2000 he has taught almost 100 Qt classes, ranging from Qt Widgets to QML. Heck, Jesper even taught a few classes on QTopia Core — Trolltech's initial attempt at creating a phone stack. Today Jesper holds a fancy business title, but that doesn't prevent him from coding both in his job and in his spare time.

About KDAB:
KDAB offers experienced software experts to help you deliver functional, high-performing and innovative software across embedded, mobile and desktop platforms for projects using C++, Qt, QML/Qt Quick, OpenGL, Qt 3D and more. https://www.kdab.com/software-services

KDAB experts regularly take time out to deliver KDAB’s world class training, in-house or at open enrollment courses around the world. We are the market leaders for training in Qt, OpenGL and C++.

Contact us to find out more at training@kdab.com or visit our website: https://www.kdab.com/software-services/scheduled-training/

We are about 90 people, located all around the world. Our Head Office is in Sweden and we have other offices in Germany, France, the UK and the USA. https://www.kdab.com/about/contact/

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YouTube Video UEw2Q0pZbjQwZ042Z2YtRy1vNnN5RndHcnRxM2tJdEVxSS41MjE1MkI0OTQ2QzJGNzNG

Using Clang-Format to Ensure Style Guidelines

Today's video falls in the proverbial "removing the pebble in one's shoes" category. We'll talk about headers in a QTableView. Were you ever slightly annoyed by the fact that you can click on a header and sort the table by the corresponding column, but then you cannot undo the sorting? Let's fix that! The example code showcased in this video is available here: https://github.com/KDAB/kdabtv/tree/master/Qt-Widgets-and-more/HeaderSortingAdapter All Qt Widgets and more videos: https://www.youtube.com/playlist?list=PL6CJYn40gN6gf-G-o6syFwGrtq3kItEqI About the host: The video is presented by Jesper Pedersen, who started with Qt back when Qt was widgets only and the version was 1.44, which gives him 21 years of experience with Qt. Since 2000 he has taught almost 100 Qt classes, ranging from Qt Widgets to QML. Heck, Jesper even taught a few classes on QTopia Core — Trolltech's initial attempt at creating a phone stack. Today Jesper holds a fancy business title, but that doesn't prevent him from coding both in his job and in his spare time. About KDAB: KDAB offers experienced software experts to help you deliver functional, high-performing and innovative software across embedded, mobile and desktop platforms for projects using C++, Qt, QML/Qt Quick, OpenGL, Qt 3D and more. https://www.kdab.com/software-services KDAB experts regularly take time out to deliver KDAB’s world class training, in-house or at open enrollment courses around the world. We are the market leaders for training in Qt, OpenGL and C++. Contact us to find out more at training@kdab.com or visit our website: https://www.kdab.com/software-services/scheduled-training/ We are about 90 people, located all around the world. Our Head Office is in Sweden and we have other offices in Germany, France, the UK and the USA. https://www.kdab.com/about/contact/
Un-sorting Headers in QTableView

Today's video falls in the proverbial "removing the pebble in one's shoes" category. We'll talk about headers in a QTableView. Were you ever slightly annoyed by the fact that you can click on a header and sort the table by the corresponding column, but then you cannot undo the sorting? Let's fix that!

The example code showcased in this video is available here: https://github.com/KDAB/kdabtv

The video is presented by Jesper Pedersen, who started with Qt back when Qt was widgets only and the version was 1.44, which gives him 21 years of experience with Qt. Since 2000 he has taught almost 100 Qt classes, ranging from Qt Widgets to QML. Heck, Jesper even taught a few classes on QTopia Core — Trolltech's initial attempt at creating a phone stack. Today Jesper holds a fancy business title, but that doesn't prevent him from coding both in his job and in his spare time.

About KDAB:
KDAB offers experienced software experts to help you deliver functional, high-performing and innovative software across embedded, mobile and desktop platforms for projects using C++, Qt, QML/Qt Quick, OpenGL, Qt 3D and more. https://www.kdab.com/software-services

KDAB experts regularly take time out to deliver KDAB’s world class training, in-house or at open enrollment courses around the world. We are the market leaders for training in Qt, OpenGL and C++.

Contact us to find out more at training@kdab.com or visit our website: https://www.kdab.com/software-services/scheduled-training/

We are about 90 people, located all around the world. Our Head Office is in Sweden and we have other offices in Germany, France, the UK and the USA. https://www.kdab.com/about/contact/

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YouTube Video UEw2Q0pZbjQwZ042Z2YtRy1vNnN5RndHcnRxM2tJdEVxSS4wOTA3OTZBNzVEMTUzOTMy

Un-sorting Headers in QTableView

Remember this tip: when an application is being introspected by GammaRay, you can use Control + Shift + Mouse click on any of its widgets to select it for further inspection. This lets you check all the properties for the widget, its positioning, as well as simply get an answer to the question: of which class is this widget? The example code showcased in this video is available here: https://github.com/KDAB/kdabtv All Qt Widgets and more videos: https://www.youtube.com/playlist?list=PL6CJYn40gN6gf-G-o6syFwGrtq3kItEqI About the host: The video is presented by Jesper Pedersen, who started with Qt back when Qt was widgets only and the version was 1.44, which gives him 21 years of experience with Qt. Since 2000 he has taught almost 100 Qt classes, ranging from Qt Widgets to QML. Heck, Jesper even taught a few classes on QTopia Core — Trolltech's initial attempt at creating a phone stack. Today Jesper holds a fancy business title, but that doesn't prevent him from coding both in his job and in his spare time. About KDAB: KDAB offers experienced software experts to help you deliver functional, high-performing and innovative software across embedded, mobile and desktop platforms for projects using C++, Qt, QML/Qt Quick, OpenGL, Qt 3D and more. https://www.kdab.com/software-services KDAB experts regularly take time out to deliver KDAB’s world class training, in-house or at open enrollment courses around the world. We are the market leaders for training in Qt, OpenGL and C++. Contact us to find out more at training@kdab.com or visit our website: https://www.kdab.com/software-services/scheduled-training/ We are about 90 people, located all around the world. Our Head Office is in Sweden and we have other offices in Germany, France, the UK and the USA. https://www.kdab.com/about/contact/
Using GammaRay to Find the Class of an UI Element

Remember this tip: when an application is being introspected by GammaRay, you can use Control + Shift + Mouse click on any of its widgets to select it for further inspection. This lets you check all the properties for the widget, its positioning, as well as simply get an answer to the question: of which class is this widget?

The example code showcased in this video is available here: https://github.com/KDAB/kdabtv

The video is presented by Jesper Pedersen, who started with Qt back when Qt was widgets only and the version was 1.44, which gives him 21 years of experience with Qt. Since 2000 he has taught almost 100 Qt classes, ranging from Qt Widgets to QML. Heck, Jesper even taught a few classes on QTopia Core — Trolltech's initial attempt at creating a phone stack. Today Jesper holds a fancy business title, but that doesn't prevent him from coding both in his job and in his spare time.

About KDAB:
KDAB offers experienced software experts to help you deliver functional, high-performing and innovative software across embedded, mobile and desktop platforms for projects using C++, Qt, QML/Qt Quick, OpenGL, Qt 3D and more. https://www.kdab.com/software-services

KDAB experts regularly take time out to deliver KDAB’s world class training, in-house or at open enrollment courses around the world. We are the market leaders for training in Qt, OpenGL and C++.

Contact us to find out more at training@kdab.com or visit our website: https://www.kdab.com/software-services/scheduled-training/

We are about 90 people, located all around the world. Our Head Office is in Sweden and we have other offices in Germany, France, the UK and the USA. https://www.kdab.com/about/contact/

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YouTube Video UEw2Q0pZbjQwZ042Z2YtRy1vNnN5RndHcnRxM2tJdEVxSS4xMkVGQjNCMUM1N0RFNEUx

Using GammaRay to Find the Class of an UI Element

We know that we should use layouts to arrange children widgets inside a container widget. Layouts do the right thing for us, automatically, except when... they don't! Sometimes, we need to fine tune some of the decisions that layouts take; usually, the one that they take wrong is deciding how much padding/margins should be applied to contents. Let's see how to fix it. The example code showcased in this video is available here: https://github.com/KDAB/kdabtv/tree/master/Qt-Widgets-and-more/ContentsMargins All Qt Widgets and more videos: https://www.youtube.com/playlist?list=PL6CJYn40gN6gf-G-o6syFwGrtq3kItEqI About the host: The video is presented by Jesper Pedersen, who started with Qt back when Qt was widgets only and the version was 1.44, which gives him 21 years of experience with Qt. Since 2000 he has taught almost 100 Qt classes, ranging from Qt Widgets to QML. Heck, Jesper even taught a few classes on QTopia Core — Trolltech's initial attempt at creating a phone stack. Today Jesper holds a fancy business title, but that doesn't prevent him from coding both in his job and in his spare time. About KDAB: KDAB offers experienced software experts to help you deliver functional, high-performing and innovative software across embedded, mobile and desktop platforms for projects using C++, Qt, QML/Qt Quick, OpenGL, Qt 3D and more. https://www.kdab.com/software-services KDAB experts regularly take time out to deliver KDAB’s world class training, in-house or at open enrollment courses around the world. We are the market leaders for training in Qt, OpenGL and C++. Contact us to find out more at training@kdab.com or visit our website: https://www.kdab.com/software-services/scheduled-training/ We are about 90 people, located all around the world. Our Head Office is in Sweden and we have other offices in Germany, France, the UK and the USA. https://www.kdab.com/about/contact/
Understanding Contents Margins in Qt Layouts

We know that we should use layouts to arrange chidren widgets inside a container widget. Layouts do the right thing for us automatically. Except when... they don't! Sometimes we need to fine tune some of the decisions that layouts take; usually, the one that they take wrong is deciding how much padding/margins should be applied to contents. Let's see how to fix it.

The example code showcased in this video is available here: https://github.com/KDAB/kdabtv

The video is presented by Jesper Pedersen, who started with Qt back when Qt was widgets only and the version was 1.44, which gives him 21 years of experience with Qt. Since 2000 he has taught almost 100 Qt classes, ranging from Qt Widgets to QML. Heck, Jesper even taught a few classes on QTopia Core — Trolltech's initial attempt at creating a phone stack. Today Jesper holds a fancy business title, but that doesn't prevent him from coding both in his job and in his spare time.

About KDAB:
KDAB offers experienced software experts to help you deliver functional, high-performing and innovative software across embedded, mobile and desktop platforms for projects using C++, Qt, QML/Qt Quick, OpenGL, Qt 3D and more. https://www.kdab.com/software-services

KDAB experts regularly take time out to deliver KDAB’s world class training, in-house or at open enrollment courses around the world. We are the market leaders for training in Qt, OpenGL and C++.

Contact us to find out more at training@kdab.com or visit our website: https://www.kdab.com/software-services/scheduled-training/

We are about 90 people, located all around the world. Our Head Office is in Sweden and we have other offices in Germany, France, the UK and the USA. https://www.kdab.com/about/contact/

44 2

YouTube Video UEw2Q0pZbjQwZ042Z2YtRy1vNnN5RndHcnRxM2tJdEVxSS41MzJCQjBCNDIyRkJDN0VD

Understanding Contents Margins in Qt Layouts

You've seen me constantly use GammaRay, when checking: item sizes, visibility, and layout margins. In this video, let me share with you a little trick: You can launch GammaRay right from within Qt Creator, with a convenient keyboard shortcut. The example code showcased in this video is available here: https://github.com/KDAB/kdabtv Link to the GammaRay Tutorials: https://www.youtube.com/playlist?list=PL6CJYn40gN6itybeSJb5FvRWOxVW5PCUX All Qt Widgets and more videos: https://www.youtube.com/playlist?list=PL6CJYn40gN6gf-G-o6syFwGrtq3kItEqI About the host: The video is presented by Jesper Pedersen, who started with Qt back when Qt was widgets only and the version was 1.44, which gives him 21 years of experience with Qt. Since 2000 he has taught almost 100 Qt classes, ranging from Qt Widgets to QML. Heck, Jesper even taught a few classes on QTopia Core — Trolltech's initial attempt at creating a phone stack. Today Jesper holds a fancy business title, but that doesn't prevent him from coding both in his job and in his spare time. About KDAB: KDAB offers experienced software experts to help you deliver functional, high-performing and innovative software across embedded, mobile and desktop platforms for projects using C++, Qt, QML/Qt Quick, OpenGL, Qt 3D and more. https://www.kdab.com/software-services KDAB experts regularly take time out to deliver KDAB’s world class training, in-house or at open enrollment courses around the world. We are the market leaders for training in Qt, OpenGL and C++. Contact us to find out more at training@kdab.com or visit our website: https://www.kdab.com/software-services/scheduled-training/ We are about 90 people, located all around the world. Our Head Office is in Sweden and we have other offices in Germany, France, the UK and the USA. https://www.kdab.com/about/contact/
Starting the Application in GammaRay from Qt Creator

You've seen me constantly use GammaRay, when checking: item sizes, visibility, and layout margins. In this video, let me share with you a little trick: You can launch GammaRay right from within Qt Creator, with a convenient keyboard shortcut.

The example code showcased in this video is available here: https://github.com/KDAB/kdabtv

Link to the GammaRay Tutorials: https://www.youtube.com/playlist?list=PL6CJYn40gN6itybeSJb5FvRWOxVW5PCUX

The video is presented by Jesper Pedersen, who started with Qt back when Qt was widgets only and the version was 1.44, which gives him 21 years of experience with Qt. Since 2000 he has taught almost 100 Qt classes, ranging from Qt Widgets to QML. Heck, Jesper even taught a few classes on QTopia Core — Trolltech's initial attempt at creating a phone stack. Today Jesper holds a fancy business title, but that doesn't prevent him from coding both in his job and in his spare time.

About KDAB:
KDAB offers experienced software experts to help you deliver functional, high-performing and innovative software across embedded, mobile and desktop platforms for projects using C++, Qt, QML/Qt Quick, OpenGL, Qt 3D and more. https://www.kdab.com/software-services

KDAB experts regularly take time out to deliver KDAB’s world class training, in-house or at open enrollment courses around the world. We are the market leaders for training in Qt, OpenGL and C++.

Contact us to find out more at training@kdab.com or visit our website: https://www.kdab.com/software-services/scheduled-training/

We are about 90 people, located all around the world. Our Head Office is in Sweden and we have other offices in Germany, France, the UK and the USA. https://www.kdab.com/about/contact/

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YouTube Video UEw2Q0pZbjQwZ042Z2YtRy1vNnN5RndHcnRxM2tJdEVxSS5DQUNERDQ2NkIzRUQxNTY1

Starting the Application in GammaRay from Qt Creator

In this video we will explain how to install and use an extremely useful plugin for Qt Creator: the SpellChecker plugin, a 3rd party contribution. Do you wonder, why do we even need spell checking? The answer is pretty simple: when we use a GUI framework such as Qt, we are going to have many user-visible strings. It would be really silly to ship software containing spelling mistakes appearing on our users' screens, wouldn't it? And while word processors have implemented spell checking for decades, editors for programmers used to not have a similar feature... well, not any more! You can download the SpellChecker Plugin from https://github.com/CJCombrink/SpellChecker-Plugin All Qt Widgets and more videos: https://www.youtube.com/playlist?list=PL6CJYn40gN6gf-G-o6syFwGrtq3kItEqI About the host: The video is presented by Jesper Pedersen, who started with Qt back when Qt was widgets only and the version was 1.44, which gives him 21 years of experience with Qt. Since 2000 he has taught almost 100 Qt classes, ranging from Qt Widgets to QML. Heck, Jesper even taught a few classes on QTopia Core — Trolltech's initial attempt at creating a phone stack. Today Jesper holds a fancy business title, but that doesn't prevent him from coding both in his job and in his spare time. About KDAB: KDAB offers experienced software experts to help you deliver functional, high-performing and innovative software across embedded, mobile and desktop platforms for projects using C++, Qt, QML/Qt Quick, OpenGL, Qt 3D and more. https://www.kdab.com/software-services KDAB experts regularly take time out to deliver KDAB’s world class training, in-house or at open enrollment courses around the world. We are the market leaders for training in Qt, OpenGL and C++. Contact us to find out more at training@kdab.com or visit our website: https://www.kdab.com/software-services/scheduled-training/ We are about 90 people, located all around the world. Our Head Office is in Sweden and we have other offices in Germany, France, the UK and the USA. https://www.kdab.com/about/contact/
Spell Checking in Qt Creator

This video is private.

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YouTube Video UEw2Q0pZbjQwZ042Z2YtRy1vNnN5RndHcnRxM2tJdEVxSS5GNjNDRDREMDQxOThCMDQ2

Spell Checking in Qt Creator

Sometimes a view would like to have more data for a cell than what is in a cell. Examples include: A view that offers special context menu entries if the cell contains an employee. The text in the cell itself might just be the employee's name, and from that alone, it would be very hard to come to the conclusion that the cell indeed holds an employee. A delegate that shows an annotation symbol (think cut of corner like in excel) if the data behind the cell is annotated. Again the cell text does not reveal this information. One way to implement this is for the view or delegate to reach out to the model in question using a regular function call, but that will break in case there are proxy models in between. This video shows how to obtain the effect by using custom roles. You can contact us regarding our services at info@kdab.com All Qt Widgets and more videos: https://www.youtube.com/playlist?list=PL6CJYn40gN6gf-G-o6syFwGrtq3kItEqI About the host: The video is presented by Jesper Pedersen, who started with Qt back when Qt was widgets only and the version was 1.44, which gives him 21 years of experience with Qt. Since 2000 he has taught almost 100 Qt classes, ranging from Qt Widgets to QML. Heck, Jesper even taught a few classes on QTopia Core — Trolltech's initial attempt at creating a phone stack. Today Jesper holds a fancy business title, but that doesn't prevent him from coding both in his job and in his spare time. About KDAB: KDAB offers experienced software experts to help you deliver functional, high-performing and innovative software across embedded, mobile and desktop platforms for projects using C++, Qt, QML/Qt Quick, OpenGL, Qt 3D and more. https://www.kdab.com/software-services KDAB experts regularly take time out to deliver KDAB’s world class training, in-house or at open enrollment courses around the world. We are the market leaders for training in Qt, OpenGL and C++. Contact us to find out more at training@kdab.com or visit our website: https://www.kdab.com/software-services/scheduled-training/ We are about 90 people, located all around the world. Our Head Office is in Sweden and we have other offices in Germany, France, the UK and the USA. https://www.kdab.com/about/contact/
Communicating between a View/Delegate and a Model

Sometimes a view would like to have more data for a cell than what is in a cell, examples includes:

A view that offer special context menu entries if the cell contains an employee. The text in the cell itself might just be the employees name, and from that alone it would be very hard to come to the conclusion that this the cell indeed holds an employee.

A delegate which shows an annotation symbol (think cut of corner like in excel) if the data behind the cell is annotated. Again the cell text do not reveal this information.

One way to implement this is for the view or delegate to reach out to the model in question using a regular function call, but that will break in case there are proxy models in between.

This video shows how to obtain the effect by using custom roles.

The example code showcased in this video is available here: https://github.com/KDAB/kdabtv

You can contact us regarding our services at info@kdab.com

The video is presented by Jesper Pedersen, who started with Qt back when Qt was widgets only and the version was 1.44, which gives him 21 years of experience with Qt. Since 2000 he has taught almost 100 Qt classes, ranging from Qt Widgets to QML. Heck, Jesper even taught a few classes on QTopia Core — Trolltech's initial attempt at creating a phone stack. Today Jesper holds a fancy business title, but that doesn't prevent him from coding both in his job and in his spare time.

About KDAB:

KDAB offers experienced software experts to help you deliver functional, high-performing and innovative software across embedded, mobile and desktop platforms for projects using C++, Qt, QML/Qt Quick, OpenGL, Qt 3D and more. https://www.kdab.com/software-services

KDAB experts regularly take time out to deliver KDAB’s world class training, in-house or at open enrollment courses around the world. We are the market leaders for training in Qt, OpenGL and C++.

Contact us to find out more at training@kdab.com or visit our website: https://www.kdab.com/software-services/scheduled-training/

We are about 90 people, located all around the world. Our Head Office is in Sweden and we have other offices in Germany, France, the UK and the USA. https://www.kdab.com/about/contact/

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YouTube Video UEw2Q0pZbjQwZ042Z2YtRy1vNnN5RndHcnRxM2tJdEVxSS40NzZCMERDMjVEN0RFRThB

Communicating between a View/Delegate and a Model

Got a stack of proxy models where there is a subtle bug somewhere in there? No worries --GammaRay to the rescue! It can visualize the stack of models for you, but there is one thing you better remember in your code --watch this video to find out what it is! 🙂 Link to download GammaRay: https://www.kdab.com/development-resources/qt-tools/gammaray/ All Qt Widgets and more videos: https://www.youtube.com/playlist?list=PL6CJYn40gN6gf-G-o6syFwGrtq3kItEqI About the host: The video is presented by Jesper Pedersen, who started with Qt back when Qt was widgets only and the version was 1.44, which gives him 21 years of experience with Qt. Since 2000 he has taught almost 100 Qt classes, ranging from Qt Widgets to QML. Heck, Jesper even taught a few classes on QTopia Core — Trolltech's initial attempt at creating a phone stack. Today Jesper holds a fancy business title, but that doesn't prevent him from coding both in his job and in his spare time. About KDAB: KDAB offers experienced software experts to help you deliver functional, high-performing and innovative software across embedded, mobile and desktop platforms for projects using C++, Qt, QML/Qt Quick, OpenGL, Qt 3D and more. https://www.kdab.com/software-services KDAB experts regularly take time out to deliver KDAB’s world class training, in-house or at open enrollment courses around the world. We are the market leaders for training in Qt, OpenGL and C++. Contact us to find out more at training@kdab.com or visit our website: https://www.kdab.com/software-services/scheduled-training/ We are about 90 people, located all around the world. Our Head Office is in Sweden and we have other offices in Germany, France, the UK and the USA. https://www.kdab.com/about/contact/
Visualizing the Model Stack in GammaRay

Got a stack of proxy models where there is a subtle bug somewhere in there? No worries --GammaRay to the rescue!

It can visualize the stack of models for you, but there is one thing you better remember in your code --watch this video to find out what it is! 🙂

Link to download GammaRay: https://www.kdab.com/development-resources/qt-tools/gammaray/

The video is presented by Jesper Pedersen, who started with Qt back when Qt was widgets only and the version was 1.44, which gives him 21 years of experience with Qt. Since 2000 he has taught almost 100 Qt classes, ranging from Qt Widgets to QML. Heck, Jesper even taught a few classes on QTopia Core — Trolltech's initial attempt at creating a phone stack. Today Jesper holds a fancy business title, but that doesn't prevent him from coding both in his job and in his spare time.

About KDAB:
KDAB offers experienced software experts to help you deliver functional, high-performing and innovative software across embedded, mobile and desktop platforms for projects using C++, Qt, QML/Qt Quick, OpenGL, Qt 3D and more. https://www.kdab.com/software-services

KDAB experts regularly take time out to deliver KDAB’s world class training, in-house or at open enrollment courses around the world. We are the market leaders for training in Qt, OpenGL and C++.

Contact us to find out more at training@kdab.com or visit our website: https://www.kdab.com/software-services/scheduled-training/

We are about 90 people, located all around the world. Our Head Office is in Sweden and we have other offices in Germany, France, the UK and the USA. https://www.kdab.com/about/contact/

31 1

YouTube Video UEw2Q0pZbjQwZ042Z2YtRy1vNnN5RndHcnRxM2tJdEVxSS5EMEEwRUY5M0RDRTU3NDJC

Visualizing the Model Stack in GammaRay

Sometimes a view or delegate needs to ask the model providing the data (at the bottom of a proxy model stack) some questions. In the previous video, 'Communicating between a View/Delegate and a Model' (https://youtu.be/q6eOEz_UfTI), I showed how custom roles can be used for this. However, if the data isn't related to a specific cell, a better approach might be to traverse the proxy models yourself, to get to the actual source model. This video shows this approach. Link to download KDReports: https://www.kdab.com/development-resources/qt-tools/kd-reports/ All Qt Widgets and more videos: https://www.youtube.com/playlist?list=PL6CJYn40gN6gf-G-o6syFwGrtq3kItEqI About the host: The video is presented by Jesper Pedersen, who started with Qt back when Qt was widgets only and the version was 1.44, which gives him 21 years of experience with Qt. Since 2000 he has taught almost 100 Qt classes, ranging from Qt Widgets to QML. Heck, Jesper even taught a few classes on QTopia Core — Trolltech's initial attempt at creating a phone stack. Today Jesper holds a fancy business title, but that doesn't prevent him from coding both in his job and in his spare time. About KDAB: KDAB offers experienced software experts to help you deliver functional, high-performing and innovative software across embedded, mobile and desktop platforms for projects using C++, Qt, QML/Qt Quick, OpenGL, Qt 3D and more. https://www.kdab.com/software-services KDAB experts regularly take time out to deliver KDAB’s world class training, in-house or at open enrollment courses around the world. We are the market leaders for training in Qt, OpenGL and C++. Contact us to find out more at training@kdab.com or visit our website: https://www.kdab.com/software-services/scheduled-training/ We are about 90 people, located all around the world. Our Head Office is in Sweden and we have other offices in Germany, France, the UK and the USA. https://www.kdab.com/about/contact/
Traversing Proxy Models to Get to the Source Model at the Bottom

Sometimes a view or delegate need to ask the model providing the data (at the bottom of a proxy model stack) some questions.

In the previous video 'Communicating between a View/Delegate and a Model': https://youtu.be/q6eOEz_UfTI I showed how custom roles can be used for this.

However, if the data isn't related to a specific cell, a better approach might be to traverse the proxy models yourself, to get to the actual source model.
This video shows this approach.

Link to download KDReports: https://www.kdab.com/development-resources/qt-tools/kd-reports/

The example code showcased in this video is available here: https://github.com/KDAB/kdabtv

The video is presented by Jesper Pedersen, who started with Qt back when Qt was widgets only and the version was 1.44, which gives him 21 years of experience with Qt. Since 2000 he has taught almost 100 Qt classes, ranging from Qt Widgets to QML. Heck, Jesper even taught a few classes on QTopia Core — Trolltech's initial attempt at creating a phone stack. Today Jesper holds a fancy business title, but that doesn't prevent him from coding both in his job and in his spare time.

About KDAB:
KDAB offers experienced software experts to help you deliver functional, high-performing and innovative software across embedded, mobile and desktop platforms for projects using C++, Qt, QML/Qt Quick, OpenGL, Qt 3D and more. https://www.kdab.com/software-services

KDAB experts regularly take time out to deliver KDAB’s world class training, in-house or at open enrollment courses around the world. We are the market leaders for training in Qt, OpenGL and C++.

Contact us to find out more at training@kdab.com or visit our website: https://www.kdab.com/software-services/scheduled-training/

We are about 90 people, located all around the world. Our Head Office is in Sweden and we have other offices in Germany, France, the UK and the USA. https://www.kdab.com/about/contact/

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YouTube Video UEw2Q0pZbjQwZ042Z2YtRy1vNnN5RndHcnRxM2tJdEVxSS45ODRDNTg0QjA4NkFBNkQy

Traversing Proxy Models to Get to the Source Model at the Bottom

Did you notice that my font has changed in Qt Creator in the last few videos? It no longer shows two characters, but it looks like an arrow: →. And, != is displayed as ≠. It's super simple, learn how here. Link to download the Jetbrains Mono font: https://www.jetbrains.com/lp/mono/ All Qt Widgets and more videos: https://www.youtube.com/playlist?list=PL6CJYn40gN6gf-G-o6syFwGrtq3kItEqI About the host: The video is presented by Jesper Pedersen, who started with Qt back when Qt was widgets only and the version was 1.44, which gives him 21 years of experience with Qt. Since 2000 he has taught almost 100 Qt classes, ranging from Qt Widgets to QML. Heck, Jesper even taught a few classes on QTopia Core — Trolltech's initial attempt at creating a phone stack. Today Jesper holds a fancy business title, but that doesn't prevent him from coding both in his job and in his spare time. About KDAB: KDAB offers experienced software experts to help you deliver functional, high-performing and innovative software across embedded, mobile and desktop platforms for projects using C++, Qt, QML/Qt Quick, OpenGL, Qt 3D and more. https://www.kdab.com/software-services KDAB experts regularly take time out to deliver KDAB’s world class training, in-house or at open enrollment courses around the world. We are the market leaders for training in Qt, OpenGL and C++. Contact us to find out more at training@kdab.com or visit our website: https://www.kdab.com/software-services/scheduled-training/ We are about 90 people, located all around the world. Our Head Office is in Sweden and we have other offices in Germany, France, the UK and the USA. https://www.kdab.com/about/contact/
Changing the Font to Jetbrains Mono in Qt Creator

This video is private.

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YouTube Video UEw2Q0pZbjQwZ042Z2YtRy1vNnN5RndHcnRxM2tJdEVxSS4zMDg5MkQ5MEVDMEM1NTg2

Changing the Font to Jetbrains Mono in Qt Creator

In this episode, I'll show how you can use your own custom types to communicate between a model and a delegate editing these custom types. My example is a Money class which contains a currency and an amount. The delegate will see Money instances, rather than parse them from their string representation. NOTE: This video was filmed before Qt6 was out, and it seems that, contrary to rumors, the function registerConverter is still there: https://doc.qt.io/qt-6/qmetatype.html#registerConverter. The example code showcased in this video is available here: https://github.com/KDAB/kdabtv/tree/master/Qt-Widgets-and-more/CustomDataTypesInModel All Qt Widgets and more videos: https://www.youtube.com/playlist?list=PL6CJYn40gN6gf-G-o6syFwGrtq3kItEqI About the host: The video is presented by Jesper Pedersen, who started with Qt back when Qt was widgets only and the version was 1.44, which gives him 21 years of experience with Qt. Since 2000 he has taught almost 100 Qt classes, ranging from Qt Widgets to QML. Heck, Jesper even taught a few classes on QTopia Core — Trolltech's initial attempt at creating a phone stack. Today Jesper holds a fancy business title, but that doesn't prevent him from coding both in his job and in his spare time. About KDAB: KDAB offers experienced software experts to help you deliver functional, high-performing and innovative software across embedded, mobile and desktop platforms for projects using C++, Qt, QML/Qt Quick, OpenGL, Qt 3D and more. https://www.kdab.com/software-services KDAB experts regularly take time out to deliver KDAB’s world class training, in-house or at open enrollment courses around the world. We are the market leaders for training in Qt, OpenGL and C++. Contact us to find out more at training@kdab.com or visit our website: https://www.kdab.com/software-services/scheduled-training/ We are about 90 people, located all around the world. Our Head Office is in Sweden and we have other offices in Germany, France, the UK and the USA. https://www.kdab.com/about/contact/
Using Custom Types with Model/View

In this episode I'll show how you can use your own custom types to communicate between a model and a delegate editing these custom types. My example is a Money class which contains a currency and an amount, the delegate will see Money instances, rather than parse them from their string representation.

NOTE: This video was filmed before Qt6 was out and it seems that contrary to rumors the function registerConverter is still there: https://doc.qt.io/qt-6/qmetatype.html#registerConverter

The example code showcased in this video is available here: https://github.com/KDAB/kdabtv .

The video is presented by Jesper Pedersen, who started with Qt back when Qt was widgets only and the version was 1.44, which gives him 21 years of experience with Qt. Since 2000 he has taught almost 100 Qt classes, ranging from Qt Widgets to QML. Heck, Jesper even taught a few classes on QTopia Core — Trolltech's initial attempt at creating a phone stack. Today Jesper holds a fancy business title, but that doesn't prevent him from coding both in his job and in his spare time.

About KDAB:
KDAB offers experienced software experts to help you deliver functional, high-performing and innovative software across embedded, mobile and desktop platforms for projects using C++, Qt, QML/Qt Quick, OpenGL, Qt 3D and more. https://www.kdab.com/software-services

KDAB experts regularly take time out to deliver KDAB’s world class training, in-house or at open enrollment courses around the world. We are the market leaders for training in Qt, OpenGL and C++.

Contact us to find out more at training@kdab.com or visit our website: https://www.kdab.com/software-services/scheduled-training/

We are about 90 people, located all around the world. Our Head Office is in Sweden and we have other offices in Germany, France, the UK and the USA. https://www.kdab.com/about/contact/

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YouTube Video UEw2Q0pZbjQwZ042Z2YtRy1vNnN5RndHcnRxM2tJdEVxSS41Mzk2QTAxMTkzNDk4MDhF

Using Custom Types with Model/View

As a developer, your toolbox should help you as much as possible, and you ought to invest the time it takes to figure out what is in there. This episodes gives you my top seven shortcuts in Qt Creator that help me save hours (OK, maybe just minutes) every single day, but, much more importantly, ensures I stay focused on whatever problem I'm solving right now. Download our Qt Creator Reference Card that lists lots more useful shortcuts here: https://www.kdab.com/development-resources/qtcreator/ All Qt Widgets and more videos: https://www.youtube.com/playlist?list=PL6CJYn40gN6gf-G-o6syFwGrtq3kItEqI About the host: The video is presented by Jesper Pedersen, who started with Qt back when Qt was widgets only and the version was 1.44, which gives him 21 years of experience with Qt. Since 2000 he has taught almost 100 Qt classes, ranging from Qt Widgets to QML. Heck, Jesper even taught a few classes on QTopia Core — Trolltech's initial attempt at creating a phone stack. Today Jesper holds a fancy business title, but that doesn't prevent him from coding both in his job and in his spare time. About KDAB: KDAB offers experienced software experts to help you deliver functional, high-performing and innovative software across embedded, mobile and desktop platforms for projects using C++, Qt, QML/Qt Quick, OpenGL, Qt 3D and more. https://www.kdab.com/software-services KDAB experts regularly take time out to deliver KDAB’s world class training, in-house or at open enrollment courses around the world. We are the market leaders for training in Qt, OpenGL and C++. Contact us to find out more at training@kdab.com or visit our website: https://www.kdab.com/software-services/scheduled-training/ We are about 90 people, located all around the world. Our Head Office is in Sweden and we have other offices in Germany, France, the UK and the USA. https://www.kdab.com/about/contact/
Top 7 Shortcuts in Qt Creator

As a developer your toolbox should help you as much as possible, and you ought to invest the time it takes to figure out what is in there. This episodes gives you my top seven shortcuts in Qt Creator that helps me save hours (OK, maybe just minutes) every single day, but much more important ensures I stay focused on whatever problem I'm solving right now.

Download our Qt Creator Reference Card that lists lots more useful shortcuts here: https://www.kdab.com/development-resources/qtcreator/

The video is presented by Jesper Pedersen, who started with Qt back when Qt was widgets only and the version was 1.44, which gives him 21 years of experience with Qt. Since 2000 he has taught almost 100 Qt classes, ranging from Qt Widgets to QML. Heck, Jesper even taught a few classes on QTopia Core — Trolltech's initial attempt at creating a phone stack. Today Jesper holds a fancy business title, but that doesn't prevent him from coding both in his job and in his spare time.

About KDAB:
KDAB offers experienced software experts to help you deliver functional, high-performing and innovative software across embedded, mobile and desktop platforms for projects using C++, Qt, QML/Qt Quick, OpenGL, Qt 3D and more. https://www.kdab.com/software-services

KDAB experts regularly take time out to deliver KDAB’s world class training, in-house or at open enrollment courses around the world. We are the market leaders for training in Qt, OpenGL and C++.

Contact us to find out more at training@kdab.com or visit our website: https://www.kdab.com/software-services/scheduled-training/

We are about 90 people, located all around the world. Our Head Office is in Sweden and we have other offices in Germany, France, the UK and the USA. https://www.kdab.com/about/contact/

118 6

YouTube Video UEw2Q0pZbjQwZ042Z2YtRy1vNnN5RndHcnRxM2tJdEVxSS5EQUE1NTFDRjcwMDg0NEMz

Top 7 Shortcuts in Qt Creator

In my code I have a lot of custom classes I use with model/view, including Money, PercentageValue, TimeValue just to name a few. For years I've written code like this in my data methods of QAbstractItemModel subclasses: return QVariant::fromValue(cost); // cost is an instance of the class Money In this short video you will learn a very simple trick to avoid this. The example code showcased in this video is available here: https://github.com/KDAB/kdabtv/tree/master/Qt-Widgets-and-more/CustomTypesAndVariants and https://github.com/KDAB/kdabtv/tree/master/Qt-Widgets-and-more/VariantConverters All Qt Widgets and more videos: https://www.youtube.com/playlist?list=PL6CJYn40gN6gf-G-o6syFwGrtq3kItEqI About the host: The video is presented by Jesper Pedersen, who started with Qt back when Qt was widgets only and the version was 1.44, which gives him 21 years of experience with Qt. Since 2000 he has taught almost 100 Qt classes, ranging from Qt Widgets to QML. Heck, Jesper even taught a few classes on QTopia Core — Trolltech's initial attempt at creating a phone stack. Today Jesper holds a fancy business title, but that doesn't prevent him from coding both in his job and in his spare time. About KDAB: KDAB offers experienced software experts to help you deliver functional, high-performing and innovative software across embedded, mobile and desktop platforms for projects using C++, Qt, QML/Qt Quick, OpenGL, Qt 3D and more. https://www.kdab.com/software-services KDAB experts regularly take time out to deliver KDAB’s world class training, in-house or at open enrollment courses around the world. We are the market leaders for training in Qt, OpenGL and C++. Contact us to find out more at training@kdab.com or visit our website: https://www.kdab.com/software-services/scheduled-training/ We are about 90 people, located all around the world. Our Head Office is in Sweden and we have other offices in Germany, France, the UK and the USA. https://www.kdab.com/about/contact/
Avoiding QVariant::fromValue around your Own Types

In my code I have a lot of custom classes I use with model/view, including Money, PercentageValue, TimeValue just to name a few.

For years I've written code like this in my data methods of QAbstractItemModel subclasses:
return QVariant::fromValue(cost); // cost is an instance of the class Money
In this short video you will learn a very simple trick to avoid this.

The example code showcased in this video is available here: https://github.com/KDAB/kdabtv

The video is presented by Jesper Pedersen, who started with Qt back when Qt was widgets only and the version was 1.44, which gives him 21 years of experience with Qt. Since 2000 he has taught almost 100 Qt classes, ranging from Qt Widgets to QML. Heck, Jesper even taught a few classes on QTopia Core — Trolltech's initial attempt at creating a phone stack. Today Jesper holds a fancy business title, but that doesn't prevent him from coding both in his job and in his spare time.

About KDAB:
KDAB offers experienced software experts to help you deliver functional, high-performing and innovative software across embedded, mobile and desktop platforms for projects using C++, Qt, QML/Qt Quick, OpenGL, Qt 3D and more. https://www.kdab.com/software-services

KDAB experts regularly take time out to deliver KDAB’s world class training, in-house or at open enrollment courses around the world. We are the market leaders for training in Qt, OpenGL and C++.

Contact us to find out more at training@kdab.com or visit our website: https://www.kdab.com/software-services/scheduled-training/

We are about 90 people, located all around the world. Our Head Office is in Sweden and we have other offices in Germany, France, the UK and the USA. https://www.kdab.com/about/contact/

51 6

YouTube Video UEw2Q0pZbjQwZ042Z2YtRy1vNnN5RndHcnRxM2tJdEVxSS41QTY1Q0UxMTVCODczNThE

Avoiding QVariant::fromValue around your Own Types

It is possible to have your own document templates in Qt Creator; learn in these four videos how to set that up. In this first episode, I will create a simple template for new classes, based on the "C++ class" template. Further, I'll explain how to use macros and show the one expanding into the class name specified in the "new file" dialog. Link to Qt Documentation: https://doc.qt.io/qtcreator/creator-project-wizards.html The resulting template for these four episodes is in github. You can download it here: https://github.com/KDAB/kdabtv/tree/master/Qt-Widgets-and-more/QtCreatorFileTemplates All Qt Widgets and more videos: https://www.youtube.com/playlist?list=PL6CJYn40gN6gf-G-o6syFwGrtq3kItEqI About the host: The video is presented by Jesper Pedersen, who started with Qt back when Qt was widgets only and the version was 1.44, which gives him 21 years of experience with Qt. Since 2000 he has taught almost 100 Qt classes, ranging from Qt Widgets to QML. Heck, Jesper even taught a few classes on QTopia Core — Trolltech's initial attempt at creating a phone stack. Today Jesper holds a fancy business title, but that doesn't prevent him from coding both in his job and in his spare time. About KDAB: KDAB offers experienced software experts to help you deliver functional, high-performing and innovative software across embedded, mobile and desktop platforms for projects using C++, Qt, QML/Qt Quick, OpenGL, Qt 3D and more. https://www.kdab.com/software-services KDAB experts regularly take time out to deliver KDAB’s world class training, in-house or at open enrollment courses around the world. We are the market leaders for training in Qt, OpenGL and C++. Contact us to find out more at training@kdab.com or visit our website: https://www.kdab.com/software-services/scheduled-training/ We are about 90 people, located all around the world. Our Head Office is in Sweden and we have other offices in Germany, France, the UK and the USA. https://www.kdab.com/about/contact/
Document Templates in Qt Creator - Part 1

It is possible to have your own document templates in Qt Creator, learn in these four videos how to set that up.

In this first episode, I will create a simple template for new classes based on the "C++ class" template. Further, I'll explain how to use macros, and show the one expanding into the class name specified in the "new file" dialog.

Link to Qt Documentation: https://doc.qt.io/qtcreator/creator-project-wizards.html

The resulting template for these four episodes is in github. You can download it here https://github.com/KDAB/kdabtv

The video is presented by Jesper Pedersen, who started with Qt back when Qt was widgets only and the version was 1.44, which gives him 21 years of experience with Qt. Since 2000 he has taught almost 100 Qt classes, ranging from Qt Widgets to QML. Heck, Jesper even taught a few classes on QTopia Core — Trolltech's initial attempt at creating a phone stack. Today Jesper holds a fancy business title, but that doesn't prevent him from coding both in his job and in his spare time.

About KDAB:
KDAB offers experienced software experts to help you deliver functional, high-performing and innovative software across embedded, mobile and desktop platforms for projects using C++, Qt, QML/Qt Quick, OpenGL, Qt 3D and more. https://www.kdab.com/software-services

KDAB experts regularly take time out to deliver KDAB’s world class training, in-house or at open enrollment courses around the world. We are the market leaders for training in Qt, OpenGL and C++.

Contact us to find out more at training@kdab.com or visit our website: https://www.kdab.com/software-services/scheduled-training/

We are about 90 people, located all around the world. Our Head Office is in Sweden and we have other offices in Germany, France, the UK and the USA. https://www.kdab.com/about/contact/

34 2

YouTube Video UEw2Q0pZbjQwZ042Z2YtRy1vNnN5RndHcnRxM2tJdEVxSS4yMUQyQTQzMjRDNzMyQTMy

Document Templates in Qt Creator - Part 1

It is possible to have your own document templates in Qt Creator. Learn, in these four videos, how to set that up. In this episode, I'll show you how to add a new file (namely, a .ui file) to the set of files generated, which, among other things, will teach us a bit more about how the macro system works. The resulting template for these four episodes is in github. You can download it here https://github.com/KDAB/kdabtv/tree/master/Qt-Widgets-and-more/QtCreatorFileTemplates All Qt Widgets and more videos: https://www.youtube.com/playlist?list=PL6CJYn40gN6gf-G-o6syFwGrtq3kItEqI About the host: The video is presented by Jesper Pedersen, who started with Qt back when Qt was widgets only and the version was 1.44, which gives him 21 years of experience with Qt. Since 2000 he has taught almost 100 Qt classes, ranging from Qt Widgets to QML. Heck, Jesper even taught a few classes on QTopia Core — Trolltech's initial attempt at creating a phone stack. Today Jesper holds a fancy business title, but that doesn't prevent him from coding both in his job and in his spare time. About KDAB: KDAB offers experienced software experts to help you deliver functional, high-performing and innovative softwae experts to help you deliver functional, high-performing and innovative software across embedded, mobile and desktop platforms for projects using C++, Qt, QML/Qt Quick, OpenGL, Qt 3D and more. https://www.kdab.com/software-services KDAB experts regularly take time out to deliver KDAB’s world class training, in-house or at open enrollment courses around the world. We are the market leaders for training in Qt, OpenGL and C++. Contact us to find out more at training@kdab.com or visit our website: https://www.kdab.com/software-services/scheduled-training/ We are about 90 people, located all around the world. Our Head Office is in Sweden and we have other offices in Germany, France, the UK and the USA. https://www.kdab.com/about/contact/
Document Templates in Qt Creator - Part 2

It is possible to have your own document templates in Qt Creator, learn in these four videos how to set that up.
In this episode I'll show you how to add a new file (namely a .ui file) to the set of files generated, which among other things will teach us a bit more about how the macro system works.

The resulting template for these four episodes is in github. You can download it here https://github.com/KDAB/kdabtv

The video is presented by Jesper Pedersen, who started with Qt back when Qt was widgets only and the version was 1.44, which gives him 21 years of experience with Qt. Since 2000 he has taught almost 100 Qt classes, ranging from Qt Widgets to QML. Heck, Jesper even taught a few classes on QTopia Core — Trolltech's initial attempt at creating a phone stack. Today Jesper holds a fancy business title, but that doesn't prevent him from coding both in his job and in his spare time.

About KDAB:

KDAB offers experienced software experts to help you deliver functional, high-performing and innovative softwae experts to help you deliver functional, high-performing and innovative software across embedded, mobile and desktop platforms for projects using C++, Qt, QML/Qt Quick, OpenGL, Qt 3D and more. https://www.kdab.com/software-services

KDAB experts regularly take time out to deliver KDAB’s world class training, in-house or at open enrollment courses around the world. We are the market leaders for training in Qt, OpenGL and C++.

Contact us to find out more at training@kdab.com or visit our website: https://www.kdab.com/software-services/scheduled-training/

We are about 90 people, located all around the world. Our Head Office is in Sweden and we have other offices in Germany, France, the UK and the USA. https://www.kdab.com/about/contact/

10 4

YouTube Video UEw2Q0pZbjQwZ042Z2YtRy1vNnN5RndHcnRxM2tJdEVxSS45RTgxNDRBMzUwRjQ0MDhC

Document Templates in Qt Creator - Part 2

It is possible to have your own document templates in Qt Creator; learn in these four videos how to set that up. In this third video of the series on developing document templates for Qt Creator, we will see how we can ask the user for additional input in the "new file" dialog, and use that in the templates. The resulting template for these four episodes is in github. You can download it here https://github.com/KDAB/kdabtv/tree/master/Qt-Widgets-and-more/QtCreatorFileTemplates All Qt Widgets and more videos: https://www.youtube.com/playlist?list=PL6CJYn40gN6gf-G-o6syFwGrtq3kItEqI About the host: The video is presented by Jesper Pedersen, who started with Qt back when Qt was widgets only and the version was 1.44, which gives him 21 years of experience with Qt. Since 2000 he has taught almost 100 Qt classes, ranging from Qt Widgets to QML. Heck, Jesper even taught a few classes on QTopia Core — Trolltech's initial attempt at creating a phone stack. Today Jesper holds a fancy business title, but that doesn't prevent him from coding both in his job and in his spare time. About KDAB: KDAB offers experienced software experts to help you deliver functional, high-performing and innovative software across embedded, mobile and desktop platforms for projects using C++, Qt, QML/Qt Quick, OpenGL, Qt 3D and more. https://www.kdab.com/software-services KDAB experts regularly take time out to deliver KDAB’s world class training, in-house or at open enrolment courses around the world. We are the market leaders for training in Qt, OpenGL and C++. Contact us to find out more at training@kdab.com or visit our website: https://www.kdab.com/software-services/scheduled-training/ We are about 90 people, located all around the world. Our Head Office is in Sweden and we have other offices in Germany, France, the UK and the USA. https://www.kdab.com/about/contact/
Document Templates in Qt Creator - Part 3

This video is private.

9 0

YouTube Video UEw2Q0pZbjQwZ042Z2YtRy1vNnN5RndHcnRxM2tJdEVxSS5ENDU4Q0M4RDExNzM1Mjcy

Document Templates in Qt Creator - Part 3

It is possible to have your own document templates in Qt Creator. Learn in these four videos how to set that up. In this final episode, you will learn about how the templates are moved to specific sections, and I'll also share with you an "install" script that you (and your co-workers) can use to get the templates copied to the right place. The resulting template for these four episodes is in github. You can download it here: https://github.com/KDAB/kdabtv/tree/master/Qt-Widgets-and-more/QtCreatorFileTemplates All Qt Widgets and more videos: https://www.youtube.com/playlist?list=PL6CJYn40gN6gf-G-o6syFwGrtq3kItEqI About the host: The video is presented by Jesper Pedersen, who started with Qt back when Qt was widgets only and the version was 1.44, which gives him 21 years of experience with Qt. Since 2000 he has taught almost 100 Qt classes, ranging from Qt Widgets to QML. Heck, Jesper even taught a few classes on QTopia Core — Trolltech's initial attempt at creating a phone stack. Today Jesper holds a fancy business title, but that doesn't prevent him from coding both in his job and in his spare time. About KDAB: KDAB offers experienced software experts to help you deliver functional, high-performing and innovative software across embedded, mobile and desktop platforms for projects using C++, Qt, QML/Qt Quick, OpenGL, Qt 3D and more. https://www.kdab.com/software-services KDAB experts regularly take time out to deliver KDAB’s world class training, in-house or at open enrolment courses around the world. We are the market leaders for training in Qt, OpenGL and C++. Contact us to find out more at training@kdab.com or visit our website: https://www.kdab.com/software-services/scheduled-training/ We are about 90 people, located all around the world. Our Head Office is in Sweden and we have other offices in Germany, France, the UK and the USA. https://www.kdab.com/about/contact/
Document Templates in Qt Creator - Part 4

This video is private.

5 0

YouTube Video UEw2Q0pZbjQwZ042Z2YtRy1vNnN5RndHcnRxM2tJdEVxSS4yMDhBMkNBNjRDMjQxQTg1

Document Templates in Qt Creator - Part 4

A nice feature of QListView and QTreeView is that the user can adapt the width of the columns using the mouse. A problem with that, however, is what to do if the column width is not wide enough to show all text. In this episode we will present an adapter that allows your model to provide multiple different strings the view can choose from. The example code showcased in this video is available here: https://github.com/KDAB/kdabtv/tree/master/Qt-Widgets-and-more/ColumnHeaderLengthAdapter All Qt Widgets and more videos: https://www.youtube.com/playlist?list=PL6CJYn40gN6gf-G-o6syFwGrtq3kItEqI About the host: The video is presented by Jesper Pedersen, who started with Qt back when Qt was widgets only and the version was 1.44, which gives him 21 years of experience with Qt. Since 2000 he has taught almost 100 Qt classes, ranging from Qt Widgets to QML. Heck, Jesper even taught a few classes on QTopia Core — Trolltech's initial attempt at creating a phone stack. Today Jesper holds a fancy business title, but that doesn't prevent him from coding both in his job and in his spare time. About KDAB: KDAB offers experienced software experts to help you deliver functional, high-performing and innovative software across embedded, mobile and desktop platforms for projects using C++, Qt, QML/Qt Quick, OpenGL, Qt 3D and more. https://www.kdab.com/software-services KDAB experts regularly take time out to deliver KDAB’s world class training, in-house or at open enrollment courses around the world. We are the market leaders for training in Qt, OpenGL and C++. Contact us to find out more at training@kdab.com or visit our website: https://www.kdab.com/software-services/scheduled-training/ We are about 90 people, located all around the world. Our Head Office is in Sweden and we have other offices in Germany, France, the UK and the USA. https://www.kdab.com/about/contact/
Adapting Column Content to Size

A nice feature of QListView and QTreeView is that the user can adapt the width of the columns using the mouse. A problem with that, however, is what to do if the column width is not wide enough to show all text. In this episode we will present an adapter that allows your model to provide multiple different string the view can choose from.

The example code showcased in this video is available here: https://github.com/KDAB/kdabtv

The video is presented by Jesper Pedersen, who started with Qt back when Qt was widgets only and the version was 1.44, which gives him 21 years of experience with Qt. Since 2000 he has taught almost 100 Qt classes, ranging from Qt Widgets to QML. Heck, Jesper even taught a few classes on QTopia Core — Trolltech's initial attempt at creating a phone stack. Today Jesper holds a fancy business title, but that doesn't prevent him from coding both in his job and in his spare time.

About KDAB:
KDAB offers experienced software experts to help you deliver functional, high-performing and innovative software across embedded, mobile and desktop platforms for projects using C++, Qt, QML/Qt Quick, OpenGL, Qt 3D and more. https://www.kdab.com/software-services

KDAB experts regularly take time out to deliver KDAB’s world class training, in-house or at open enrollment courses around the world. We are the market leaders for training in Qt, OpenGL and C++.

Contact us to find out more at training@kdab.com or visit our website: https://www.kdab.com/software-services/scheduled-training/

We are about 90 people, located all around the world. Our Head Office is in Sweden and we have other offices in Germany, France, the UK and the USA. https://www.kdab.com/about/contact/

31 1

YouTube Video UEw2Q0pZbjQwZ042Z2YtRy1vNnN5RndHcnRxM2tJdEVxSS5GM0Q3M0MzMzY5NTJFNTdE

Adapting Column Content to Size

In your code, you will likely find numerous places where you go from an enum to a QString and back. This could, for example, be code where you serialize your data. The code might very well look like this: if (value == ExampleEnum::Foo) return "Foo"; else if (value == ExampleEnum::Bar) return "Bar"; ~~~ But there is a smarter way to do it, using Qt's introspection facilities. Watch here to learn that trick. The example code showcased in this video is available here: https://github.com/KDAB/kdabtv/tree/master/Qt-Widgets-and-more/EnumConverter All Qt Widgets and more videos: https://www.youtube.com/playlist?list=PL6CJYn40gN6gf-G-o6syFwGrtq3kItEqI About the host: The video is presented by Jesper Pedersen, who started with Qt back when Qt was widgets only and the version was 1.44, which gives him 21 years of experience with Qt. Since 2000 he has taught almost 100 Qt classes, ranging from Qt Widgets to QML. Heck, Jesper even taught a few classes on QTopia Core — Trolltech's initial attempt at creating a phone stack. Today Jesper holds a fancy business title, but that doesn't prevent him from coding both in his job and in his spare time. About KDAB: KDAB offers experienced software experts to help you deliver functional, high-performing and innovative software across embedded, mobile and desktop platforms for projects using C++, Qt, QML/Qt Quick, OpenGL, Qt 3D and more. https://www.kdab.com/software-services KDAB experts regularly take time out to deliver KDAB’s world class training, in-house or at open enrollment courses around the world. We are the market leaders for training in Qt, OpenGL and C++. Contact us to find out more at training@kdab.com or visit our website: https://www.kdab.com/software-services/scheduled-training/ We are about 90 people, located all around the world. Our Head Office is in Sweden and we have other offices in Germany, France, the UK and the USA. https://www.kdab.com/about/contact/
Converting Enums to and from Strings

In your code you will likely find numerous places where you go from an enum to a QString and back. This could for example be code where you serialize your data.

The code might very well look like this

if (value == ExampleEnum::Foo)
return "Foo";
else if (value == ExampleEnum::Bar)
return "Bar";
~~~

But there is a smarter way to do it using Qt's introspection facilities. Watch here to learn that trick.

The example code showcased in this video is available here: https://github.com/KDAB/kdabtv

The video is presented by Jesper Pedersen, who started with Qt back when Qt was widgets only and the version was 1.44, which gives him 21 years of experience with Qt. Since 2000 he has taught almost 100 Qt classes, ranging from Qt Widgets to QML. Heck, Jesper even taught a few classes on QTopia Core — Trolltech's initial attempt at creating a phone stack. Today Jesper holds a fancy business title, but that doesn't prevent him from coding both in his job and in his spare time.

About KDAB:
KDAB offers experienced software experts to help you deliver functional, high-performing and innovative software across embedded, mobile and desktop platforms for projects using C++, Qt, QML/Qt Quick, OpenGL, Qt 3D and more. https://www.kdab.com/software-services

KDAB experts regularly take time out to deliver KDAB’s world class training, in-house or at open enrollment courses around the world. We are the market leaders for training in Qt, OpenGL and C++.

Contact us to find out more at training@kdab.com or visit our website: https://www.kdab.com/software-services/scheduled-training/

We are about 90 people, located all around the world. Our Head Office is in Sweden and we have other offices in Germany, France, the UK and the USA. https://www.kdab.com/about/contact/

60 10

YouTube Video UEw2Q0pZbjQwZ042Z2YtRy1vNnN5RndHcnRxM2tJdEVxSS4zRjM0MkVCRTg0MkYyQTM0

Converting Enums to and from Strings

In this first episode on developing plugins for Qt Designer, we will discuss the widget promotion feature and its shortcomings compared to plugins. This is the first video out of 6 on this topic. So, stay tuned! The example code showcased in this video is available here: https://github.com/KDAB/kdabtv/tree/master/Qt-Widgets-and-more/WidgetPromotion All Qt Designer Plugins videos: https://www.youtube.com/playlist?list=PL6CJYn40gN6iNg0nIYH4QLhYkfs5PslbA All Qt Widgets and more videos: https://www.youtube.com/playlist?list=PL6CJYn40gN6gf-G-o6syFwGrtq3kItEqI About the host: The video is presented by Jesper Pedersen, who started with Qt back when Qt was widgets only and the version was 1.44, which gives him 21 years of experience with Qt. Since 2000 he has taught almost 100 Qt classes, ranging from Qt Widgets to QML. Heck, Jesper even taught a few classes on QTopia Core — Trolltech's initial attempt at creating a phone stack. Today Jesper holds a fancy business title, but that doesn't prevent him from coding both in his job and in his spare time. About KDAB: KDAB offers experienced software experts to help you deliver functional, high-performing and innovative software across embedded, mobile and desktop platforms for projects using C++, Qt, QML/Qt Quick, OpenGL, Qt 3D and more. https://www.kdab.com/software-services KDAB experts regularly take time out to deliver KDAB’s world class training, in-house or at open enrollment courses around the world. We are the market leaders for training in Qt, OpenGL and C++. Contact us to find out more at training@kdab.com or visit our website: https://www.kdab.com/software-services/scheduled-training/ We are about 90 people, located all around the world. Our Head Office is in Sweden and we have other offices in Germany, France, the UK and the USA. https://www.kdab.com/about/contact/
Qt Designer Plugins (Part 1) - Widgets Promotion

In this first episode on developing plugins for Qt Designer, we will discuss the widget promotion feature and discuss its shortcoming compared to plugins.
This is the first video out of 6 on this topic so stay tuned!

The example code showcased in this video is available here: https://github.com/KDAB/kdabtv

The video is presented by Jesper Pedersen, who started with Qt back when Qt was widgets only and the version was 1.44, which gives him 21 years of experience with Qt. Since 2000 he has taught almost 100 Qt classes, ranging from Qt Widgets to QML. Heck, Jesper even taught a few classes on QTopia Core — Trolltech's initial attempt at creating a phone stack. Today Jesper holds a fancy business title, but that doesn't prevent him from coding both in his job and in his spare time.

About KDAB:
KDAB offers experienced software experts to help you deliver functional, high-performing and innovative software across embedded, mobile and desktop platforms for projects using C++, Qt, QML/Qt Quick, OpenGL, Qt 3D and more. https://www.kdab.com/software-services

KDAB experts regularly take time out to deliver KDAB’s world class training, in-house or at open enrollment courses around the world. We are the market leaders for training in Qt, OpenGL and C++.

Contact us to find out more at training@kdab.com or visit our website: https://www.kdab.com/software-services/scheduled-training/

We are about 90 people, located all around the world. Our Head Office is in Sweden and we have other offices in Germany, France, the UK and the USA. https://www.kdab.com/about/contact/

82 12

YouTube Video UEw2Q0pZbjQwZ042Z2YtRy1vNnN5RndHcnRxM2tJdEVxSS45NzUwQkI1M0UxNThBMkU0

Qt Designer Plugins (Part 1) - Widgets Promotion

Before you create a plugin, your classes may be configured using constructors like: class Wishes { public: Wishes(bool isExclusive, const QColor& color, QWidget* parent); ... } But how do you handle these parameters if your constructors can't take anything but the parent pointer? This episode will discuss a few different possible solutions. This is the second video out of 6 on this topic. So stay tuned! The example code showcased in this video is available here: https://github.com/KDAB/kdabtv/tree/master/Qt-Widgets-and-more/WidgetInitialization All Qt Designer Plugins videos: https://www.youtube.com/playlist?list=PL6CJYn40gN6iNg0nIYH4QLhYkfs5PslbA All Qt Widgets and more videos: https://www.youtube.com/playlist?list=PL6CJYn40gN6gf-G-o6syFwGrtq3kItEqI About the host: The video is presented by Jesper Pedersen, who started with Qt back when Qt was widgets only and the version was 1.44, which gives him 21 years of experience with Qt. Since 2000 he has taught almost 100 Qt classes, ranging from Qt Widgets to QML. Heck, Jesper even taught a few classes on QTopia Core — Trolltech's initial attempt at creating a phone stack. Today Jesper holds a fancy business title, but that doesn't prevent him from coding both in his job and in his spare time. About KDAB: KDAB offers experienced software experts to help you deliver functional, high-performing and innovative software across embedded, mobile and desktop platforms for projects using C++, Qt, QML/Qt Quick, OpenGL, Qt 3D and more. https://www.kdab.com/software-services KDAB experts regularly take time out to deliver KDAB’s world class training, in-house or at open enrollment courses around the world. We are the market leaders for training in Qt, OpenGL and C++. Contact us to find out more at training@kdab.com or visit our website: https://www.kdab.com/software-services/scheduled-training/ We are about 90 people, located all around the world. Our Head Office is in Sweden and we have other offices in Germany, France, the UK and the USA. https://www.kdab.com/about/contact/
Qt Designer Plugins (Part 2) - Initializing Classes when Using Qt Designer

Before you create a plugin, your classes may be configured using constructors, like:

class Wishes {
public:
Wishes(bool isExclusive, const QColor& color, QWidget* parent);
...
}

But how do you handle these parameters if your constructors can't take anything but the parent pointer?

This episode will discuss a few different possible solutions.

This is the second video out of 6 on this topic so stay tuned!

The example code showcased in this video is available here: https://github.com/KDAB/kdabtv

The video is presented by Jesper Pedersen, who started with Qt back when Qt was widgets only and the version was 1.44, which gives him 21 years of experience with Qt. Since 2000 he has taught almost 100 Qt classes, ranging from Qt Widgets to QML. Heck, Jesper even taught a few classes on QTopia Core — Trolltech's initial attempt at creating a phone stack. Today Jesper holds a fancy business title, but that doesn't prevent him from coding both in his job and in his spare time.

About KDAB:
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KDAB experts regularly take time out to deliver KDAB’s world class training, in-house or at open enrollment courses around the world. We are the market leaders for training in Qt, OpenGL and C++.

Contact us to find out more at training@kdab.com or visit our website: https://www.kdab.com/software-services/scheduled-training/

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YouTube Video UEw2Q0pZbjQwZ042Z2YtRy1vNnN5RndHcnRxM2tJdEVxSS5DNzE1RjZEMUZCMjA0RDBB

Qt Designer Plugins (Part 2) - Initializing Classes when Using Qt Designer

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