| title | ms.custom | ms.date | ms.reviewer | ms.suite | ms.technology | ms.tgt_pltfrm | ms.topic | f1_keywords | dev_langs | helpviewer_keywords | ms.assetid | caps.latest.revision | author | ms.author | manager | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
source (C++) | Microsoft Docs |
11/04/2016 |
|
language-reference |
|
|
|
1878d05d-7709-4e97-b114-c62f38f5140e |
9 |
mikeblome |
mblome |
ghogen |
On a class, specifies the COM object's source interfaces for connection points. On a property or method, indicates that the member returns an object or VARIANT that is a source of events.
[ source(
interfaces
) ]
interfaces
One or more interfaces that you specify when you apply the source attribute to a class. This parameter is not used when source is applied to a property or method.
The source C++ attribute has the same functionality as the source MIDL attribute.
You can use the default attribute to specify the default source interface for an object.
// cpp_attr_ref_source.cpp
// compile with: /LD
#include "windows.h"
#include "unknwn.h"
[module(name="MyLib")];
[object, uuid(11111111-1111-1111-1111-111111111111)]
__interface b
{
[id(0), propget, bindable, displaybind, defaultbind, requestedit]
HRESULT get_I([out, retval]long *i);
};
[object, uuid(11111111-1111-1111-1111-111111111131)]
__interface c
{
[id(0), propget, bindable, displaybind, defaultbind, requestedit]
HRESULT et_I([out, retval]long *i);
};
[coclass, default(c), uuid(11111111-1111-1111-1111-111111111132)]
class N : public b
{
};
[coclass, source(c), default(b, c), uuid(11111111-1111-1111-1111-111111111133)]
class NN : public b
{
};
| Applies to | class, struct, interface |
| Repeatable | No |
| Required attributes | coclass (when applied to class or struct) |
| Invalid attributes | None |
For more information about the attribute contexts, see Attribute Contexts.