Compiler COM Support Classes
The latest version of this topic can be found at 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.
|_com_error||Defines the error object thrown by _com_raise_error in most failures.|
|_com_ptr_t||Encapsulates COM interface pointers, and automates the required calls to
|_variant_t||Wraps the VARIANT type to provide useful operators and methods.|