IClassFactroy :: CreateInstance（）给出了pUnkOuter Not null值 [英] IClassFactroy::CreateInstance() gives pUnkOuter Not null value

问题描述

下面的示例是C＃。它提供了 pUnkOuter参数，有时不为空。我认为它基于CoCreateInstance（）调用。但在下面的情况下，它来自Urlmon.dll。那么我怎么能避免它？或者如果是预期的那样，哪个是正确的方法。即如果我得到pUnkOuter不为null我应该返回什么应该是ppvObject的值。

Below sample is C#. It gives pUnkOuter parameter not null some time. I think it is based on CoCreateInstance() call. But in below case, it is coming from Urlmon.dll. So how can i avoid it? Or which is the correct way if it is expected one. I.e if i get pUnkOuter not null what should i return and what should be the value of ppvObject.

https://github.com/mganss/AsyncPluggableProtocol < span style ="font-size：14px">

https://github.com/mganss/AsyncPluggableProtocol

谢谢，Renjith VR

Thanks, Renjith V R

推荐答案

4月30日上午12:07，Renjith V Ramachandran写道：

On 4/30/2017 12:07 AM, Renjith V Ramachandran wrote:

样本是C＃。它使pUnkOuter参数在某段时间内不为空。我认为它基于CoCreateInstance（）调用。但在下面的情况下，它来自Urlmon.dll。那我怎么能避免呢？或者如果是预期的那样，哪个是正确的方法。即如果我得到pUnkOuter
不为null我应该返回什么应该是ppvObject的值。

Below sample is C#. It gives pUnkOuter parameter not null some time. I think it is based on CoCreateInstance() call. But in below case, it is coming from Urlmon.dll. So how can i avoid it? Or which is the correct way if it is expected one. I.e if i get pUnkOuter not null what should i return and what should be the value of ppvObject.

您正在查看COM聚合：
https://www.codeproject.com/Articles/5337 / COM-Concept-Unleashing-Aggregation

You are looking at COM aggregation: https://www.codeproject.com/Articles/5337/COM-Concept-Unleashing-Aggregation

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