Introduction - If you have any usage issues, please Google them yourself
MapX program before doing a framework developed with delphi, achieved many mapX function, and easy to use, can continue to develop on this basis. Now I learn Arcgis Engine (arcengine), the interface used in the devexpress few. This program achieved: Zoom \ narrow \ roaming distance, area measurement, object search, statistics, .... mapx and arcgis engine and arcgis server, AO, MO, google map were all the GIS development components.