Is there an interface, how to bind the code?

Question

User interface

Hi all!
There is an application interface (drawn screens), there is a desire to make a program yourself.
How to bind interface to code? Worked only with Delphi and JS. In Delphi immediately editor. JS, if necessary, can be linked to HTML + CSS. How is an interface made in C++? Python?
Please do not kick much and just explain these basics. Looks like I missed it somewhere.

Answer 1

Google: Qt, PyQt, GTK+, Tkinter, kivy