The Study And Implementation Of Military Map Control Based On COM

In this paper,crisis in software industry is mentioned and the core technology-software components proposed to resolve this crisis is summarized.The concept^ identity and basic principle of software components are described.Three currently main software components technologies(CORBA COM/DCOM, Enterprise Java Beans) are introduced and further analyzed. Also,the character of ActiveX Control based on COM is introduced,and the advantages and disadvantages of developing ActiveX Controls using VC++ are analyzed.After large amount of trials,some helpful experiences and key technologies on developing custom Vector Map controls are discussed,for example:adding user property pagies the designing and implementing of MulticontroK Activating property dialog when running the drawing of military signs and construction of curvilinear.A custom ActiveX Control-Visualized Electronical Vector Map control used in C41SR and G1S is designed.The key analysis-, design and implement used in developing this ActiveX Control is proposed as well.