The difference between COM / DCOM is actually in this kind of law itself, and the DCOM itself is a form of expression of COM. COM, executed on another computer on the network. So the difference between this COM and DCOM is born. Difference: COM has two forms, dynamic connection libraries, and executables, but DCOM must be executable Program. Because DCOM is not possible to run in the customer program memory space, it cannot be a dynamic connection library. COM (Dynamic Library Form) You do not need RPC communication, and DCOM must use RPC remote calls. COM (dynamic connection library form) and customers Commonly existing in the same memory space, the call speed is fast, only one tenth of COM. COM (Dynamic Library Form) is not high, the customer program can cause the service COM error, the DCOM is high, the reason It is also caused by COM and customer programs. The COM program is complicated. DCOM configuration is more complicated. After all, the DCOM involves network and security. Contact: The client does not have to know the existence of COM, there is a unified interface call mode, customer The program does not even know the location of the COM object, may be on the same computer, can also be on the other side of the earth; because the DCOM itself is a form of comes, there are many common
