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Introduction to COM and ATL

This section provides a brief introduction to COM and ATL.

In This Section

  • Introduction to COM
    Provides an overview of the Component Object Model's (COM) fundamental concepts, including interfaces, IUnknown, reference counting, QueryInterface, marshaling, and aggregation.

  • Introduction to ATL
    Discusses, briefly, what the Active Template Library (ATL) was designed for, template libraries, and ATL version numbers. Includes recommendations for choosing between ATL and MFC.