What language and toolkit to choose for writing a GUI under Linux?

Question

linux

I'm trying to choose a language and framework for GUI development on Linux...
now I know - C++, C, Go, JS & HTML & CSS, Java, etc. I want to learn - C#, Swift ( no Mac )
now I choose between:

1. Qt (Py/C++)
   
2. wxWidgets (Py/C++)
   
3. GTK/GTK+/GTK# ( C/C++/C# )
   
4. FLTK/JUCE/Nana/... ( C/C++ )
   
5. Electron (NodeJS, HTML, CSS)
   
6. OpenGL
   

only suggest not to use linux is not necessary!! :)

Answer 1

There is not much to choose from here ( if you are not a web-monkey ): Qt.
Linux should be used the other way around.

Answer 2

They say C# is already possible in Linux, but since you want to learn, you can take a chance.
And so - the question is what kind of GUI.
Some kind of utility with simple windows, so it will be possible to make a js web interface to it cross-platform, and the backend is already on whatever you want with the option to rewrite it later in another language.
PS Just not an electron.

Answer 3

If normal and cross-platform, then Qt. If, at the same time, you want C #, then there is QtSharp.
If it's simple, cross-platform, and so that all users then curse, then electron.

Answer 4

Point by point:
1) Qt ( Py / C ++ ) Good cross-platform solution, high entry threshold.
wxWidgets ( Py/C++ ) Terrible stuff, not worth even looking at in my experience.
GTK/GTK+/GTK# ( C/C++/C# ) Has a place to be, but deader than qt\electron.
FLTK/JUCE/Nana/... ( C/C++ ) Unfamiliar.
Electron ( Node JS, HTML, CSS ) Cross-platform, lag, low entry threshold
OpenGL Too low-level for a gee app.
As a result, option 2, QT and Electron. I want fast - Electron, I want quality - QT

Answer 5

A well-known teacher at Moscow State University is drowning for FLTK:
www.stolyarov.info/books/pdf/progintro_vol4.pdf