本程序是在专业软件ARC INFO 的Map Object在visual Basic 环境下开发的界面，在一幅地图上缩小放大或者原图显示，画矩形然后显示和图块的交集，而且可以显示多种缓冲区和实现部分查询功能-the procedures in the professional software ARC INFO Map Object in visual Basic development environment interface, a map to enlarge it or shrink t

本程序是在专业软件ARC INFO 的Map Object在visual Basic 环境下开发的界面，打开两个coverage图层，并且在这两个图层间建立关联或删除关联，产生DXF图层-the procedures in the professional software ARC INFO Map Object in visual Basic development environment interface, open two coverage layer, and in this two