How do most people make GUI's?

[alled]

I know there are frameworks for different languages but for this question, I mean how do most people make a GUI? Do they do it all by writing a ton of text or do they use a UI tool to create a GUI such as drag and drop stuff?

I'm mainly asking because when jumping into learning to create GUI's, that's where I really get lost when they just start with like a100+ lines of code just to do something simple. I know there is stuff like QT Creator for C++, and I believe something similar for C# and a GUI it uses. Is this the standard way professionals actually make GUI's and do all languages/frameworks offer this? So far I haven't seen such a tool for Dart/flutter.

I'm mostly trying to decide on a language to jump into learning for cross platform development.

[PaigeMiller]

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duplicate thread on Reddit https://www.reddit.com/r/learnprogramming/comments/1c1xkg0/how_do_most_people_make_guis/