Adding NSMenuItem to NSApp.MainMenu not inserting new menu item

Question

I'm using the following code to add a new menu item programatically

override func viewDidLoad() {
    let mainMenu = NSApp.mainMenu
    let myMenu = NSMenuItem(title: "MenuTitle", action: nil, keyEquivalent: "")
    mainMenu!.addItem(myMenu)
}

But this does not add a new menu item.

Answer 1

You need to set your menuItem submenu and add new menu items to it as follow:

override func viewDidLoad() {
    super.viewDidLoad()

    let menuItem = NSMenuItem(title: "SubMenu", action: nil, keyEquivalent: "")

    let subMenu = NSMenu(title: "SubMenu")
    subMenu.addItem(withTitle: "abc", action: #selector(abc), keyEquivalent: "")

    menuItem.submenu = subMenu

    NSApp.mainMenu?.addItem(menuItem)
}

@objc func abc(_ menuItem: NSMenuItem) {
    print(#function)
}