菜單欄右鍵菜單中使用的 NSMennuItems 顯示為灰色且無法點擊

Question

我正在嘗試使用NSTextField作為NSMenuItem 。

但它不起作用。

這是我的代碼：

 class charPoolBoxForMenuItemInstance: NSTextField,NSTextFieldDelegate{
    override init(frame: CGRect) {
        super.init(frame: frame)
        self.delegate = self
    }

    required init?(coder: NSCoder) {super.init(coder: NSCoder.init())}
   override func textDidChange(_ notification: Notification) {
   if self.currentEditor()?.selectedRange != nil{UserDefaults.standard.set(self.stringValue, forKey: "charPoolBox")

    }
  }
}

var  charPoolBoxForMenuItem = charPoolBoxForMenuItemInstance.init(string: String.init())

然后我將它添加到我的菜單中，如下所示：

let charPoolMenuItem = NSMenuItem()
    charPoolMenuItem.title = "Character Pool"
    charPoolMenuItem.view = charPoolBoxForMenuItem
    charPoolBoxForMenuItem.placeholderString = "Character Pool"
    charPoolBoxForMenuItem.frame = CGRect(x: 30, y: 0, width: 400, height: 22)
    menuBarMenu.addItem(charPoolMenuItem)

這是它變灰的樣子：

更新 ：

@objc func resetPoolChar(){charPoolBoxForMenuItem.stringValue = "abc"}


     let charPoolMenuItem = NSMenuItem()
    charPoolMenuItem.title = "Character Pool"
    charPoolMenuItem.view = charPoolBoxForMenuItem
    charPoolMenuItem.action = #selector(resetPoolChar)
    charPoolBoxForMenuItem.placeholderString = "Character Pool"
    charPoolBoxForMenuItem.frame = CGRect(x: 30, y: 0, width: 400,          height: 22)

Answer 1

您還需要操作的目標：

   charPoolMenuItem.action = #selector(resetPoolChar)
   charPoolMenuItem.target = self