NSMenuItem未启用swift

Question

我的项目中有一个NSMenuItem:

var statusBar = NSStatusBar.systemStatusBar()
var statusItem : NSStatusItem = NSStatusItem()
var menuItem : NSMenuItem = NSMenuItem()
var mainMenu = NSMenu()

override func viewDidLoad() {
    super.viewDidLoad()

    menuItem.title = "Holidays"
    menuItem.action = Selector("setWindowVisible:")
    menuItem.target = nil
    menuItem.keyEquivalent = "M"
    menuItem.enabled = true
    mainMenu.addItem(menuItem)

    statusItem = statusBar.statusItemWithLength(-1)
    statusItem.menu = mainMenu
    statusItem.title = statusItem.menu?.itemAtIndex(0)?.title

}

它将项目添加到菜单,但未启用:

http://i68.fastpic.ru/big/2015/0116/39/8e444aa8fb6f113bcdad2753e915b439.jpeg

并且选择器也是有效的,该函数setWindowVisible存在于同一个类中:

func setWindowVisible(sender : AnyObject?) {
    self.window!.orderFront(self)
}

Answer 1

目标需要self而不是零.

menuItem.target = self