luban-lite-t3e-pro/packages/third-party/awtk-ui/awtk/design/default/ui/uiex/overlay.xml

<overlay name="overlay" theme="uiex" x="r" y="m" w="71" h="71" click_through="true" style="lucency">
  <draggable drag_window="true"/>
  <image x="0" y="0" w="100%" h="100%" image="uiex_Coverwindow" draw_type="center"/>
</overlay>