defaultvtable
Defines an interface as the default vtable interface for a COM object.
Syntax
[ defaultvtable(interface) ]
Parameters
interface
The designated interface that you want to have the default vtable for the COM object.
Remarks
The defaultvtable C++ attribute has the same functionality as the defaultvtable MIDL attribute.
Example
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 {};
Requirements
| Attribute context | Value |
|---|---|
| Applies to | class, struct |
| Repeatable | No |
| Required attributes | coclass |
| Invalid attributes | None |
For more information, see Attribute Contexts.