WPF with … C#? C++/RT? … is there any place I can get this info from MS so I don’t always have to ask friendly strangers on Lemmy? :D

Win32 is also still supported on Windows, and I cobbled together half an implementation using that (but had to do way too much work to have my app not look like Windows 95), but on all other platforms, when the platform vendor makes announcements of moving away from a technology, you don’t start a new project on an old platform. So I’d rather use whatever gets attention from MS, and new features, and looks right.

Thanks, that looks like a cool project, but this is for a programming language with an integrated UI builder, so using another UI abstraction on top of the native UI would just lead to lots of awkward translation code on top of Slint’s.