Qt does that, too, but that is not nearly enough if you really want to make pixel- and interaction- perfect things. A "native" macos app is fundamentally different from a "native" windows app. Dock vs systray, different usage of menus, mouse and keyboard. Different widgets - Windows does not use baloon widgets and sheets. etc etc...
> A "native" macos app is fundamentally different from a "native" windows app.
The visual and interactive differences between a macOS app and a Windows app are actually less stark than the differences between a macOS app and a watchOS app (crown) or a tvOS app (remote), but so far, despite its early bugs and limitations, SwiftUI does a great job of outputting the native controls on all [of Apple's] platforms.
Things like NavigationViews and TabViews produce different beasts on macOS, iOS, iPadOS, and tvOS, from the same code.
