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nonextensible

Specifies that the IDispatch implementation includes only the properties and methods listed in the interface description and cannot be extended with additional members at run time.

[nonextensible]

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

Use of nonextensible also requires the oleautomation attribute.

The following code shows one use of the nonextensible attribute:

// cpp_attr_ref_nonextensible.cpp
// compile with: /LD
#include "unknwn.h"
[module(name="ATLFIRELib")];
[export] typedef long HRESULT;

[dual, nonextensible, ms_union, oleautomation, 
uuid("00000000-0000-0000-0000-000000000001")]
__interface IFireTabCtrl
{
   HRESULT procedure (int i); 
};

Attribute Context

Applies to

interface

Repeatable

No

Required attributes

dual and oleautomation, or dispinterface

Invalid attributes

None

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

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