HDI_ClassAndInheritance

How to use class inheritance (4D v18 R3)

Find more information on the blog post

Installing and Using a 4D Project

Pre-requisites

Download the latest Release version of 4D from: https://us.4d.com/product-download or the latest Beta version from: https://discuss.4d.com
Follow the activation steps for 4D from: https://developer.4d.com/docs/GettingStarted/installation

Steps to Run the Project

Clone or download the GitHub repository containing the 4D project to your local machine. Need help, check out this blog.
Open the 4D project in your 4D software by navigating to "File > Open Project". You can find more details here.
Play with this HDI.
Navigate to the "Mode/Return to design mode" menu to view the code.

By following these steps, you will be able to successfully install and run a 4D project.