该程序是利用gis组件mapobject2.1，在vc中开发的，主要是实现把mapobject支持的文件拖入程序界面显示-that the procedure was used gis component mapobject2.1, vc developed, mainly to achieve Lotus support file into programming interfaces show

用vc++写的一个关于拖拽的不错的例子，可以用来学习一下。-Using vc++ to write on the drag of a good example of that can be used to learn about.