KeyboardInputEvent 对象继承InputEvent
typestring - 事件类型，可以是rawKeyDown,keyDown,keyUp或char。keyCodestring - keyCode字符将被作为键盘事件发送 Should only use the valid key codes in Accelerator.
InputEventtype string - 事件类型，可以是 rawKeyDown, keyDown, keyUp 或 char。keyCode string - keyCode字符将被作为键盘事件发送 Should only use the valid key codes in Accelerator.