How to write something like this (more details inside)?

Question

Programming

Please forgive me for a VERY stupid question. I'm new to programming. It's very interesting how such game designers write:
Full size
What programming languages ​​should I use? What libraries?
Googled. Googled a lot. But how exactly to create such an interface and so on did not find. Or bad search. Can you please explain how to do something like this? And yes, I naturally understand that I can’t write something like that. I'm interested out of curiosity. Thanks in advance :)

Answer 1

Each operating system has a set of basic controls (ListView, TreeView, Panel, Image, Tab, SpinEdit etc) and an API (Application Programming Interface) for processing them. Every high-level language has libraries that adapt these API calls into their classes. Also, many languages ​​(development tools) have their own form constructor. Controls are thrown onto the form, the required values ​​are set in the properties editor, and code is attached to button clicks and other events. Programming is pretty easy these days. I threw controls on the form, almost a finished program.
This is about the interface.
Game files are stored in their own format. Very often classes are used for archiving. That is, the map file is a data archive, each file of which has its own format. Or maybe standard file types are used, such as png. Classes inside the program read files and render them in the appropriate interface structures. One file in TreeView another in ListView and so on.

Answer 2

You can use any programming language. You can
do something like this in many ways, one of the simplest, for example, like this