| description | title | ms.date | helpviewer_keywords | ms.assetid | ||
|---|---|---|---|---|---|---|
Learn more about: Compiler COM Support Classes |
Compiler COM Support Classes |
11/04/2016 |
|
6d800d9b-b902-4033-9639-740a30b06f88 |
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 |
|---|---|
| _bstr_t | Wraps the BSTR type to provide useful operators and methods. |
| _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 AddRef, Release, and QueryInterface. |
| _variant_t | Wraps the VARIANT type to provide useful operators and methods. |
END Microsoft Specific
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