COM Introduction

COM: A Brief Introduction Dan Berger [email_address]

Outline ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

A Brief History of COM ,[object Object],[object Object],[object Object]

History (Cont.) ,[object Object],[object Object],[object Object],[object Object]

Objects vs. Components ,[object Object],[object Object],[object Object]

COM as (C++)++ (Adapted From [2]) ,[object Object],[object Object],[object Object]

Challenges of Distribution ,[object Object],[object Object],[object Object],[object Object]

Challenges of Encapsulation ,[object Object],[object Object],[object Object]

Versioned Libraries ,[object Object],[object Object],[object Object],[object Object],[object Object]

Interface v. Implementation ,[object Object],[object Object],[object Object],[object Object]

Abstract Classes as Interfaces ,[object Object],[object Object],[object Object],[object Object]

vtbls and vptrs ,[object Object],[object Object],[object Object]

Example ,[object Object],[object Object],[object Object],[object Object],[object Object],IsearchableString vptr vtbl Length (null) Find (null)

Example (cont.) ,[object Object],[object Object],[object Object],SString vptr vtbl SString::Length SString::Find

Instantiating an Abstract Class ,[object Object],[object Object]

Virtual Destructors ,[object Object],[object Object],[object Object]

What is COM ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Interfaces ,[object Object],[object Object],[object Object]

IUnknown ,[object Object],[object Object],[object Object],[object Object],[object Object]

QueryInterface ,[object Object],[object Object],[object Object]

HRESULT ,[object Object],[object Object],[object Object],[object Object]

Instantiating Objects ,[object Object],[object Object],[object Object]

Activation and the SCM ,[object Object],[object Object],[object Object],[object Object]

Activation (cont.) ,[object Object],[object Object],[object Object]

COM as CORBA-light ,[object Object],[object Object],[object Object]

There’s Much, Much More ,[object Object],[object Object],[object Object],[object Object],[object Object]

The Definitive References ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

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