CAD得到用户自定义事件的参数

例如: JS下的代码

   <script>

    function CustomEvent(sEventName)
    {
       if(sEventName == "Mx_UpdateDisplay")
       {
          // 视区更新
         // alert("Mx_UpdateDisplay");
          
          var eventParam = document.getElementById("MxDrawXCtrl1").CustomEventParam();
          if(eventParam.AtLong(0) == 1)
          {
            alert("更新显示缓存");
           }
       }
    }

    document.getElementById("MxDrawXCtrl1").ImplementCustomEvent = CustomEvent;

    </script>