Migrating to Qt6 - QVariant скачать в хорошем качестве

Migrating to Qt6 - QVariant

We are currently working on migrating an in-house tool to Qt 6. While doing so, there were some runtime issues relating to QVariant. In this episode, I'll discuss these. 0:00 Introduction 1:00 Recap of the episode on combo boxes in Qt Designer 2:17 The problem in Qt6 4:04 Debugging the code to see the underlying problem 8:33 Adding QVariant::fromValue to solve the problem 9:54 Just be carefull 10:41 Problems with QVariant::toString() 13.36 operator<()(QVariant, QVariant) is gone 14:46 QVariant::compare 18:47 Improved Money comparison in Qt5 20:10 Improved Money comparison in Qt6 Links: Original episode on combo box setup:    • Populating a Combobox from Qt Designer   More details on QMetaType: https://www.qt.io/blog/whats-new-in-q... The example code showcased in this video is available here: https://github.com/KDAB/kdabtv/tree/m... All QML tips and tricks videos :    • QML Tips and Tricks   All Qt Widgets and more videos:    • Qt Widgets and more   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. Every month our newsletter is featuring technical blogs on Qt, C++ and 3D topics: https://www.kdab.com/development-reso... 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-service... 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/