基于ActiveX的地理信息组件的结构研究

在某作战仿真系统中，针对一般的GIS组件产品价格昂贵，功能复杂的问题，设计开发了一个基于ActiveX的代价低廉，功能实用的GIS组件－EpMap,为了达到功能和结构之间的平衡，在设计中借鉴了MapObjects的设计思想，EpMap由一个地图显示控件（OCX）和4组自动化对象组成，数据源为Shapefiles格式，空间数据按分层组织并且提供了基本的几何图形对象，实际应用表明，EpMap完全参够满足系统的需要，而且运行稳定，维护简单。

Architecture of components GIS based on ActiveX

Since the general ComGIS products in a campaign simulation system were expensive and complicated, EqMap, a new cheap and useful ComGIS based on ActiveX was developed. In order to achieve a balance between its architecture and function, the design of MapObjects was used for reference. EpMap consists of one map display control(OCX) and 4 groups of automated objects. The data source of EpMap is Shapefiles and spatial data was organized into layers. EpMap also provided geometric Objects. Applications show that EpMap can completely meet the demand it can operate steadily and its maintenance is simple.