Guess what this App is written in (Lib/Framework/Language). You won't possibly believe it. (As I also didn't.)

Desktop: Gnome Shell with Pop-Dark-Compact.

Hint: It is not a custom style made by me to match the pop-gtk-theme nor a webpage (like electron).

Java?

Brainfuck?

CSS

Dart?

Ok, it has to be old/legacy.

Python and tkinter

French?

BASIC ??

DOS ?

SQL ?

MONGO?

@daegontaven I'm not thinking, I'm guessing 😅

Tkinter was already the right direction becaue it is legacy shit.

It's Java (Koin) with Swing. The LookAndFeel was set to the System-Default which is Gtk, but I never would have imagined that it would support Gtk3 AND a custom Gtk-Theme.

Without any changes to the LoF it would look like this:

@LinusCDE oohhh neat, I'll try this

@DavidINC I personaly would try to use JavaFX. The fact that gtk3 is supported just hels ruining my motiovation for learning that.

@rc5-asdf Exactly. Sadly it's the only framework in which I csn make decent Native-/Crossplatform-Applications in.

@LinusCDE just a question: why is tkinter legacy? It's just a lightweight builtin python GUI framework which just works if you need a simple gui

@ThoughtfulDev In that case it would be fine.
But in todays world who would make a GUI in that except the GUI does really 0% care or, as you said, needs to be very lightweight.
It's the same with Swing which is the reason I was shocked that it still can look up-to-date.

@rc5-asdf Nice and is there reall JavaFX v2?? Never heard about that.

And swing doesn't usually look native. But you can enforce it (commented out code in screenshot above).
On linux it works sometimes but on Windows you can't tell the difference.