macos - 如何防止 Storyboard 打开窗口

Question

我正在编写一个简单的应用程序，该应用程序加载到状态栏，单击它会在状态栏图标下打开一个弹出窗口。我使用 Storyboard来定义我喜欢在弹出窗口中显示的 UI。问题是，一旦我实例化 Storyboard，就会打开一个窗口。我怎样才能防止这种情况发生？这是我的应用程序委托(delegate)中的代码:

func applicationDidFinishLaunching(aNotification: NSNotification) {
    let mainBoard = NSStoryboard(name: "MainBoard", bundle: nil)
}

Answer 1

import Cocoa

@NSApplicationMain
class AppDelegate: NSObject, NSApplicationDelegate {
    var defaultWindow:NSWindow!
    func applicationDidFinishLaunching(aNotification: NSNotification) {
        defaultWindow = NSApplication.sharedApplication().windows.first as? NSWindow
        defaultWindow.close()

    }
    func applicationWillTerminate(aNotification: NSNotification) {
        // Insert code here to tear down your application
    }
    @IBAction func menuClick(sender: AnyObject) {
        defaultWindow.makeKeyAndOrderFront(nil)
    }
}

更新:Xcode 7.1.1 • Swift 2.1

NSApplication.sharedApplication().windows.first?.close()