WPF, WCF, WF, WinForms on Linux will not appear?

Question

C++ / C#

Hi all!
The listed technologies are endangered and it is better not to use them for new projects, since they have not even become cross-platform?

Answer 1

WinForms and WPF will never appear on linux, because the former are too tied to GDI, and the latter to Direct2D. WCF has a port under .netstandard, but still a bit damp. If you need a cross-platform GUI like Avalonia, you can use that. I think that MS will also finish MAUI for linux.
WF and WPF are not dead, and are not even going to evolve and die at all.
To use or not depends on your purpose. If your company does not have workstations with linux, then it makes sense to write a cross-platform application.