Why doesn't QtCreator compile?

Question

Qt

Installed QtCreator from the site on linux. I thought it would be easier with him than with a notepad. But he's just as badass. I threw a form, I'm trying to run it - I don't see the widget. had to be set manually. Other problems I do not understand how to solve ...

Why so many problems?

Answer 1

Excuse me, but:
1. Your question cannot be answered.
2. A bad dancer is always getting in the way.
Read the documentation.