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

WPF 鼠标拖拽功能，自定义拖拽的跟随图形，不再是一个虚线的系统的小标志，而是具体所拖拽的对象的图形，比如拖一个button，后面跟随的就是一个button的形状。-WPF mouse drag and drop, drag the following custom graphics, broken system is no longer a small sign, but concrete by dragging a graphical object, such as dragging a b