| title | Compiler COM Support Classes | Microsoft Docs | ||
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| ms.custom | |||
| ms.date | 11/04/2016 | ||
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| ms.topic | language-reference | ||
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| ms.assetid | 6d800d9b-b902-4033-9639-740a30b06f88 | ||
| author | mikeblome | ||
| ms.author | mblome | ||
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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
Compiler COM Support
Compiler COM Global Functions
C++ Language Reference