Microsoft Specific
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.
Class |
Purpose |
|---|---|
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. |