结合GIS工具软件与当今可视化开发语言的集成二次开发方式是GIS应用开发的主流。它的优点是既可以充分利用GIS工具软件对空间数据库的管理、分析功能，又可以利用其它可视化开发语言具有的高效、方便等编程优点，集二者之所-GIS software tools combined with the development of contemporary visual language secondary development of integrated manner GIS application development is the mainstream. Its advantage is not only fully utilize the tools of GIS spatial database management, analysis, it could make use of other visual programming language with an efficient and convenient programming advantages, combines two pancaked