vc++6.0开发的地图操作软件，包含图层管理和任务栏，其功能主要有：地图浏览(放大缩小漫游等)，图层显隐，数据压缩，要素选取，数据保存等。-vc++6.0 to develop a map of operating software, including layer management, and task bar, its functions are: map browsing (Zoom roaming, etc.), significant hidden layer, data comp