What are GUID? Why does COM need GUIDs?

What are GUID? Why does COM need GUIDs?

Globally Unique Identifier :
- A 16-byte number generated by Microsoft programs that uniquely identifies a network or user or computer or document. It is one of the elements of information that can be passed when you connect to an Internet site, and it may be stored in cookies
- A globally unique identifier (GUID) is used for unique IDs. No two GUIDs are the same no matter what computer they were generated on. The attribute clsid defines the GUID of the associated ActiveX control to use.
What is a type library? - C++
What is a type library? - A file or component within another file that contains standard descriptions of exposed objects, properties, and methods...
What is the IUnknown interface? - C++
What is the IUnknown interface? - The IUnknown interface lets clients get pointers to other interfaces on a given object through the QueryInterface method....
What is binary object model? - C++
What is binary object model? - COM defines an API to allow for the creation of components for use in integrating custom applications or to allow diverse components to interact....
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