他是MapX和delphi的例子，他实现功能有：图层管理，地图放大、缩小、漫游；图形的基本编辑等功能。-MapX and delphi example, realizing his functions : management layers, maps to zoom, roaming; The basic graphics editing capabilities.

自己做的一个GIS作品，实现了放大、缩小、 移动、定位等基本功能外，还实现了一些图层的相关操作。.. -have done a GIS works, achieving zoom in and out, mobile, basic features, such as positioning, also achieving some layers of operation. ..

实现了放大、缩小、 移动、定位等基本功能外，还实现了一些图层的相关操作。.. -achieved to zoom, move, basic features, such as positioning, but also to achieve some layers of operation. ..