async_uuid

Visual Studio 2015

The new home for Visual Studio documentation is Visual Studio 2017 Documentation on docs.microsoft.com.

Specifies the UUID that directs the MIDL compiler to define both synchronous and asynchronous versions of a COM interface.

Syntax

  
      [async_uuid (  
   uuid  
)]

Parameters

uuid
A UUID that identifies the version of the interface.

Remarks

The async_uuid C++ attribute has the same functionality as the async_uuid MIDL attribute.

Example

// 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);  
};

Requirements

Attribute Context


Applies to	`interface`
Repeatable	No
Required attributes	None
Invalid attributes	dual, dispinterface

For more information about the attribute contexts, see Attribute Contexts.