vc++ 开发 GIS 与 GPS ，提供在线首发GPS定位信息，显示坐标点，轨迹回放，GIS地图放大、缩小、选种等等操作。 测试过可以编译。-vc++ development of GIS and GPS, GPS location information to provide online starting to show coordinates, trajectory playback, GIS map zooming, selection, etc. operation. Te