Swift source code to accompany the matching article on SwiftUI on macOS: Settings, defaults and About.
controls
How to add a tabbed Settings window with different controls, for settings saved by UserDefaults, and extend the app’s About window.
How to get the best out of a Combo box, and all about Pop-up Buttons, Text Fields, Date Pickers and more.
Screen brightness controls on a MacBook Air no longer work properly.
The Eclectic Light Company 