Window.trapKey

機能/意味
Whether to trap keystrokes
タイプ
Windowクラスのプロパティ (読み書き可能)
説明
 Indicates whether to trap keystrokes. You can also set a value.
 If set to true, keystroke events occurring in other windows can be intercepted and fired in this window.
 If multiple windows have this property set to true, the keystroke event will fire for the most recently created window.
参照
Window.focusable