Compiler COM Support Classes
Standard classes are used to support some of the COM types. The classes are defined in comdef.h and the header files generated from the type library.
Wraps the BSTR type to provide useful operators and methods.
Defines the error object thrown by _com_raise_error in most failures.
Encapsulates COM interface pointers, and automates the required calls to AddRef, Release, and QueryInterface.
Wraps the VARIANT type to provide useful operators and methods.