pub fn navigation_split_view3(
sidebar: View,
content: View,
detail: View,
) -> ViewExpand description
NavigationSplitView { sidebar } content: { content } detail: { detail }
The three-column shape — a sidebar, a list, and the selected item — which is
what a Mail or Notes window is. navigation_split_view pins the middle
column to EmptyView, so it could not be filled at all.