mut window := ... // The Window
// Create Menubar
window.bar = ui.menubar(window, window.theme)
// Create 'Help' MenuItem
mut help := ui.menuitem('Click me')
// Add a subitem that will show when 'Click me' clicked
mut subitem := ui.menuitem('A subitem')
help.add_child(subitem)
// Add Help to Menubar
window.bar.add_child(help)
A Menubar is a bar containing MenuItem(s), it can either be set as the Window's Menubar (traditional way)
or as a regular Component.
A MenuItem is an item inside the Menubar (File, Edit, & Help in the preview),
adding a MenuItem to a MenuItem produces a dropdown list