How can you write programs for Windows?

Question

Haskell

Hello!
Please advise the programming language in which you can write programs under Windows.
You need to write a couple of programs to automate the work at the computer.
It is necessary that it would be possible to design a visual interface, multithreading, and most importantly: functional programming. Perhaps these are some kind of constructors for schoolchildren, perhaps something more serious, but not C ++, C #, Delphi, etc. They are too heavy.
And yes, even so that it could not be decompiled into ASM, how can this be done with C #

Answer 1

And yes, even so that it could not be decompiled into ASM

there is no such.

Answer 2

decompile to ASM like you can do it with C#

that is, you are not familiar with disassemblers? This can be done with any binary containing executable code. And for reference, in the case of sharps, there is not assembler, but bytecode, in fact, for the CLR (virtual machine, runtime). And yes, obfuscation should help, as is the case with compiled languages.
C# heavy? Then just kill it. Of course, you can look towards Rust, but ... I'm afraid it will be difficult for you in this case.

Answer 3

First, decide if you really need functional programming . If yes, then C/C++/C#/Delphi and other imperative languages ​​will not work.

Answer 4

Python? Serious enough, you can write whatever you need. If obfuscators and “compilers” are needed, then they are :)
as for obfuscation and disassembly: humanity can crack any protection that it has created. If not, then bypass it.