Type MenuItem

type MenuItem struct {
	// Title is the entry's text. It is shown as written: no character in it
	// marks a shortcut.
	Title string
	// Separator makes the entry a dividing line; its other fields are ignored.
	Separator bool
	// Disabled shows the entry dimmed and not selectable, as a heading or a
	// line of status.
	Disabled bool
	// Checked puts a check mark beside the entry.
	Checked bool
	// Submenu, when not empty, makes the entry open a menu of these.
	Submenu []MenuItem
	// OnSelect runs on the event-loop thread, after the menu has closed, when
	// the user chooses the entry. An entry with a Submenu is not selectable.
	OnSelect func()
}