[GoodbyeEarl]

Sorry for the newbie question, I've never written a desktop application. But do you write the UI in a different language than you write its business logic? For instance, you would write the UI in Delphi with the Lazarus IDE and then the "back-end" of your app would be written in C++, Go or something alike?

[uvatbc]

tl;dr: sometimes the UI can be written in a different language.

Qt used to have an XML markup language that auto generated C++ UI code.

Later, QML was introduced - which is a JavaScript based UI runtime.

There are Qt bindings for other languages, for example Python. So you could write business logic in Python and UI in QML.

[GoodbyeEarl]

Thanks! So is Qt used to write both the logic and the UI?