使用delphi和mapx插件实现了gis地图的多个功能：包括放大，缩小，移动，图层管理等功能，对初学者很有帮助。-Use delphi and mapx plug-in implements several functions gis maps include: enlarge, reduce, move, layer management functions, useful for beginners.

For Delphi: This sample is based on MS DirectX SDK Pick sample demostrating how to "Pick" what triangle is pointed by mouse pointer on rotating object. This sample goes further so object is rotated by both WORLD and VIEW matrices (in original sample