自动获取最大设备id

hdw

2018-12-11 8410662678ad065a8b270a9c9cbdfde8461f424d

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<?xml version="1.0" encoding="UTF-8"?> 
<JSFFlowViewLayout version="1.0"> 
  <Drawing gridVisible="true" snapOn="true" /> 
</JSFFlowViewLayout>