Microsoft Knowledge Base Article
This article contents is Microsoft Copyrighted material.
©2005-©2007 Microsoft Corporation. All rights reserved.
Terms
of Use |
Trademarks
Article ID: 327094 - Last Review: September 13, 2005 - Revision: 1.4
BUG: The UCOMIEnumVARIANT interface definitions for the Clone method and for the Next method are incorrect in the .NET Framework 1.1 and in the .NET Framework 1.0
This article was previously published under Q327094
SYMPTOMS
The signatures for the unmanaged
IEnumVARIANT::Next method and for the
IEnumVARIANT::Clone method are the following.
IEnumVARIANT::Next
HRESULT Next(
unsigned long celt,
VARIANT FAR* rgVar,
unsigned long FAR* pCeltFetched
);
IEnumVARIANT::Clone
HRESULT Clone(
IEnumVARIANT FAR* FAR* ppEnum
);
However, the
UCOMIEnumVARIANT interface does not define these methods correctly. The following
are the current incorrect signatures for these methods.
UCOMIEnumVARIANT.Next
int Next(
int celt,
int rgvar,
int pceltFetched
);
UCOMIEnumVARIANT.Clone
void Clone(
int ppenum
);
In the
UCOMIEnumVARIANT.Next method, the
rgvar parameter is defined as an int instead of as an object.
Additionally, in the
UCOMIEnumVARIANT.Clone method, the
ppenum parameter is defined as an int instead of as
UCOMIEnumVARIANT. Therefore, it is difficult to use the
UCOMIEnumVARIANT interface to enumerate a collection of variants.
WORKAROUND
You can write you own definition of the
IEnumVARIANT interface. The following code is an example on how to do this.
[
ComImport(),
Guid("00020404-0000-0000-C000-000000000046"),
InterfaceType(ComInterfaceType.InterfaceIsIUnknown)
]
interface IEnumVARIANT
{
[PreserveSig()]
int Next(
int celt,
out object rgVar,
out int pCeltFetched);
[PreserveSig()]
int Skip(
int celt);
[PreserveSig()]
uint Reset();
IEnumVARIANT Clone();
}
STATUS
Microsoft has confirmed that this is a bug in the Microsoft
products that are listed in the "Applies to"
section.
MORE INFORMATION
For more information, visit the following Microsoft
Developer Network (MSDN) Web sites:
APPLIES TO
- Microsoft .NET Framework 1.1
- Microsoft .NET Framework 1.0
- Microsoft Visual Studio .NET 2003 Professional Edition
- Microsoft Visual Studio .NET 2003 Enterprise Architect
- Microsoft Visual Studio .NET 2003 Enterprise Developer
- Microsoft Visual Studio .NET 2002 Professional Edition
- Microsoft Visual Studio .NET 2002 Enterprise Architect
- Microsoft Visual Studio .NET 2002 Enterprise Developer
| kbvs2002sp1sweep kbtshoot kbprb kbbug KB327094 |
Community Feedback System
Very often, it takes hours to solve a problem. Very often, you've looked high
and low, and have tried a lot of solutions. When you finally found it, chances
are, it was because someone else helped you. Here's your chance to give back.
Use our community feedback tool to let others know what worked for you and what
didn't.
Please also understand that the community feedback system is not warranted to be
correct, it's simply a system that we've built to let people try and help each
other. If something in a feedback response doesn't make sense to you, or you're
not comfortable making changes that the feedback talks about (like registry
edits), please consult a professional.
Thank you for using kbAlertz.com Feedback System.
-- Scott Cate
Be the first to leave feedback, to help others about this knowledge base
article.
(Optional) Name
(Optional)
Public URL Or Email
Comments
No
HTML -- Text Only Please