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defaultvtable 

Defines an interface as the default vtable interface for a COM object.


[ defaultvtable(
      interface
) ]

Parameters

interface

The designated interface that you want to have the default vtable for the COM object.

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

The following code shows attributes on a class that use defaultvtable to specify a default interface:

// cpp_attr_ref_defaultvtable.cpp
// compile with: /LD
#include <unknwn.h>
[module(name="MyLib")];

[object, uuid("00000000-0000-0000-0000-000000000001")]
__interface IMyI1 {
   HRESULT x();
};

[object, uuid("00000000-0000-0000-0000-000000000002")]
__interface IMyI2 {
   HRESULT x();
};

[object, uuid("00000000-0000-0000-0000-000000000003")]
__interface IMyI3 {
   HRESULT x();
};

[coclass, source(IMyI3, IMyI1), default(IMyI3, IMyI2), defaultvtable(IMyI1),
uuid("00000000-0000-0000-0000-000000000004")]
class CMyC3 : public IMyI3 {};

Attribute Context

Applies to

class, struct

Repeatable

No

Required attributes

coclass

Invalid attributes

None

For more information, see Attribute Contexts.

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