可移动悬浮窗，希望可以做到类似小白点的功能。

//FloatContent.ets 
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 = window.findWindow("floatWindow") 
 
  // 通过悬浮窗名称“floatWindow”获取到创建的悬浮窗 
  aboutToAppear() { 
    this.floatWindow = window.findWindow("floatWindow") 
    this.floatWindow.setPreferredOrientation(window.Orientation.LANDSCAPE) 
  } 
 
  // 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(30) 
          .fontColor(Color.White) 
          .fontWeight(FontWeight.Bold) 
          .gesture( 
            LongPressGesture() 
              .onAction(() => { 
                let windowStage = AppStorage.get("windowStage") as window.WindowStage; 
                windowStage.createSubWindow("next",(err,win)=>{ 
                  win.setUIContent("pages/Page7"); 
                  win.moveWindowTo(this.windowPosition.x+500,this.windowPosition.y) 
                  win.resize(200,200); 
                  win.showWindow(); 
                }) 
              }) 
              .onActionEnd(()=>{ 
                window.findWindow("next").destroyWindow() 
              }) 
          ) 
 
      } 
      .width('100%') 
    } 
    .borderRadius(500) 
    .height('100%') 
    .gesture( 
      // 绑定PanGesture事件，监听拖拽动作 
      PanGesture(this.panOption) 
        .onActionStart((event: GestureEvent) => { 
          console.info('Pan start'); 
        })// 发生拖拽时，获取到触摸点的位置，并将位置信息传递给windowPosition 
        .onActionUpdate((event: GestureEvent) => { 
          this.windowPosition.x += event.offsetX; 
          this.windowPosition.y += event.offsetY; 
        }) 
        .onActionEnd(() => { 
          console.info('Pan end'); 
        }), 
    ) 
    .border({ 
      style: BorderStyle.Dotted 
    }) 
    .backgroundColor("#E8A49C") 
  } 
}
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