mo+vb，二次开发，读取矢量数据，放大、缩小、鹰眼、平移和完整的图层管理，由图到属性查询和由属性到地图的查询。-mo+ vb, secondary development, read the vector data, zoom, Eagle Eye, translation and the complete layer management, from the map to the property to the map queries and inquiries from the prope