The Delegating Delegate

This episode will guide you though a "best practice" model/view example, and on the way show you my latest invention, namely a delegating delegate, which ensures that I not longer need to add delegates to every single column needing it - it just works by magic.

At the end I will dive into the Qt source code to find the last piece of the puzzle, while I discover what likely is an oversight, if not even a bug, in Qt itself.

Chapters:

00:00 Welcome

01:00  The problem at hand

02:45 The original code, plus best practises

07:56 Registering a new metatype

08:37 The delegates

14:34 The DelegatingDelegate

19:23 Why did the return key not work anymore?

22:24  codebrowser.dev - and finding the problem

27:26 How to solve the problem?

29:14 How if I want different date format in different places?

Links:

• Converting Money Instances Automatically
• The Bug Fix in Qt
• Introduction to Model/View Programming
• Clang-tidy
• Checking Your Indexes
• Operator+ to Convert Enum to int and enum\_cast
• The QVARIANTMACRO Trick
• The QWAMDelegate Class
• Introduction to Delegates
• setContentsMargin(0,0,0,0)
• setAutoFillBackground(true)
• RegisterEditor (didn't work out, but still, for background)
• The Qt Event System
• The Bugfix in Qt
• Event Filters
• Shortcuts for going to codebrowser.dev 
• Understanding the Qt Source Code
• Communicating via Custom Roles between Models and Delegates
• The example code showcased in this video is available here
• All Qt Widgets and more videos