I noticed that a lot of "younger" developers working on software for Windows are unaware of the fact that nearly "everything" in plain old Win32 gets created as

I noticed that a lot of "younger" developers working on software for Windows are unaware of the fact that nearly "everything" in plain old Win32 gets created as a Window: Buttons, Comboboxes, ListViews, etc. - they all rely on "CreateWindow" / "CreateWindowEx".