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Component Object Model
Component Object Model COM is a binary-interface standard for software components introduced by Microsoft in 1993 It is used to enable inter-process communication and dynamic object creation in a large range of programming languages COM is the basis for several other Microsoft technologies and frameworks, including OLE, OLE Automation, Browser Helper Object, ActiveX, COM+, DCOM, the Windows shell, DirectX, UMDF and Windows Runtime The essence of COM is a language-neutral way of implementing objects that can be used in environments different from the one in which they were created, even across machine boundaries For well-authored components, COM allows reuse of objects with no knowledge of their internal implementation, as it forces component implementers to provide well-defined interfaces that are separated from the implementation The different allocation semantics of languages are accommodated by making objects responsible for their own creation and destruction through reference-counting Type conversion casting between different interfaces of an object is achieved through the QueryIcomponent object model, component object model tutorial, component object model architecture design, component object model programming, component object model specification, component object model introduction Component Object Model