Architecture of components GIS based on ActiveX
Yu Wang · Ha'erbin gongye daxue xuebao · 2002
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.