| description | title | ms.date | f1_keywords | helpviewer_keywords | ms.assetid | ||
|---|---|---|---|---|---|---|---|
Learn more about: async_uuid |
async_uuid (C++ COM Attribute) |
10/02/2018 |
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235cb0d7-be58-4dd9-983c-e2a21bbc42c6 |
Specifies the UUID that directs the MIDL compiler to define both synchronous and asynchronous versions of a COM interface.
[async_uuid (uuid)]uuid
A UUID that identifies the version of the interface.
The async_uuid C++ attribute has the same functionality as the async_uuid MIDL attribute.
// cpp_attr_ref_async_uuid.cpp
// compile with: /LD
#include <Windows.h>
[module(name="Test")];
[object, uuid("9e66a290-4365-11d2-a997-00c04fa37ddb"),
async_uuid("e8583106-38fd-487e-912e-4fc8645c677e")]
__interface ICustom {
HRESULT Custom([in] long l, [out, retval] long *pLong);
};| Attribute context | Value |
|---|---|
| Applies to | interface |
| Repeatable | No |
| Required attributes | None |
| Invalid attributes | dual, dispinterface |
For more information about the attribute contexts, see Attribute Contexts.