Delphi与COM技术对MAPGIS地理矢量图操作的实现

Realization of Exerting Geographic Vector Graph Operation Employing COM Technology in Delphi

分析了Delphi与COM技术的特点 ,提出了在Delphi中利用COM技术实施地理矢量图操作方面的几点认识。以笔者参与开发的GIS软件—MAPGIS为例 ,介绍了这一GIS软件中提出的新概念———工作区 ,并给出了其详细的实现过程。

Suggests several views on exerting geographic vector graph operation employing COM technology in Delphi, analyzing the respective characteristics of Delphi and COM technologies. Taking MAPGIS as a sample, also introduces a new concept,work area, of which the detailed realization process is presented, in the software of GIS.