[madhadron]

> MacOS used to have a choice between Carbon and Cocoa, didn't it? Maybe still does.

It did. Carbon was the pre-NeXT widget set and compatibility to run pre-OS X apps. It is very dead. There is only Cocoa.

> MFC/ATL is just a way of accessing Win32 via C++

Okay, so we can still regard MFC/Win32 as the standard API?