HarmonyOS 子窗口是否可手势移动

参考demo：

import window from '@ohos.window';

interface Position {
  x: number,
  y: number
}
@Entry
@Component
struct FloatContent {
  @State message: string = 'float window'
  private panOption: PanGestureOptions = new PanGestureOptions({ direction: PanDirection.All });
  // 创建位置变量，并使用@Watch监听，变量发生变化调用moveWindow方法移动窗口
  @State @Watch("moveWindow") windowPosition: Position = { x: 0, y: 0 };
  floatWindow: window.Window
  // 通过悬浮窗名称“floatWindow”获取到创建的悬浮窗
  aboutToAppear() {
    this.floatWindow = window.findWindow("floatWindow")
  }
  // 将悬浮窗移动到指定位置
  moveWindow() {
    this.floatWindow.moveWindowTo(this.windowPosition.x, this.windowPosition.y);
  }

  build() {
    Row() {
      Column() {
        Text(this.message)
          .fontSize(50)
          .fontWeight(FontWeight.Bold)
      }
      .width('100%')
    }
    .height('100%')
    .gesture(
      // 绑定PanGesture事件，监听拖拽动作
      PanGesture(this.panOption)
        .onActionStart((event: GestureEvent) => {
          console.info('Pan start');
        })
        .onActionUpdate((event: GestureEvent) => {
          // 发生拖拽时，获取到触摸点的位置，并将位置信息传递给windowPosition
          this.windowPosition.x += event.offsetX;
          this.windowPosition.y += event.offsetY;
        })
        .onActionEnd(() => {
          console.info('Pan end');
        })
    )
    .border({
      style: BorderStyle.Dotted
    })
    .backgroundColor(Color.Yellow)
  }
}