Research And Design Of Electronic Map Based On GIS Component

Electronic Map is one of products of hi-tech industry. With the development of software and hardware industry,it comes into being and makes progress gradually.Widely using makes it become a heat topic of how to mke electronic map efficiently.As well known, Component Object Model is one of the most popular standards for the component technology which makes up for the defects and drawbacks of the traditional methods. Component technology is adopted and employed in the construction of information system. Component technology is the latest development of the object-oriented technique. Bearing such qualities of being open, flexible manageable and effective, etc. with this new technique applied to the construction of information system, the reusability of the software and the development efficiency of the system can be raised. In this paper, firstly, through the discussion of COM structure and Active control technology, the principal and implemental way of COM technology are introduced. Secondly, this paper summer the characteristics of MapX that is GIS ActiveX components developed by MapInfo Company. Finally, based on the discussion of fundamental and implemention of MapX component, an electrical map system is designed and made. Researching indicates that general function requirements of electronic map are satisfied with using this ActiveX.