[已解决]从C#运行时错误中调用ATL dll [英] [Solved]calling ATL dll from C# Runtime Error

问题描述

我有一个本机C ++ dll和一个虚拟类("mycert").我有一个ATL dll项目，我将本机dll包含到ATL中，并为"mycert"创建了一个接口.在mycert接口中，我有功能:

i have a native C++ dll and a virtual class("mycert") in it.I have an ATL dll project and i included the native dll into the ATL and create an interface for the ''mycert'' .In mycert interface i have a function :

STDMETHODIMP Cmycert::setSignature(BYTE* data, SHORT size)
{

        cert = new mycert();
	ByteArray* barray = new ByteArray();
	for(int i=0;i<size;i++)
		(*barray)[i] = data[i];
	ASN1BitString* bitString = new ASN1BitString();
	bitString->setValue(*barray);
	cert->setSignature(bitString);
	
	return S_OK;
}

在一个C#项目中，我包含ATL dll并调用上面的函数:

and in a c# project i include the ATL dll and call the above function:

byte[] data = new byte[3];
data[0] = 4;
data[1] = 6;
data[2] = 8;
mycertClass obj = new mycertClass();
obj.setSignature(ref data[0], 3);

当我运行此代码时，它给出以下错误:

运行时错误！

程序:
... dio 2008 \ Projects \ myApplication \ myApplication \ bin \ Debug \ myApplication.vshost.exe

该应用程序已请求运行时以一种异常方式终止它.
请与应用程序的支持团队联系以获取更多信息."

我的本机c ++ dll除了"mycert"以外，还有许多其他类，它们不是虚拟的，我可以对它们成功地执行相同的操作，只有mycert类会导致此错误.我是否缺少有关虚拟类的内容?
您能帮我吗?

when i run this code, it gives the following error:

"Runtime Error!

Program:
...dio 2008\Projects\myApplication\myApplication\bin\Debug\myApplication.vshost.exe

This application has requested the Runtime to terminate it in an unusual way.
Please contact the application''s support team for more information."

my native c++ dll has lots of classes other than ''mycert'' and they are not virtual, i can do the same operations on them successfully ,only mycert class cause this error. Am I missing something about virtual classes?
Can you help me please?

推荐答案

您可以调用函数吗?
如果仅返回S_OK? :)

Can you call your function
if it returns S_OK only ? :)

是的，我可以称之为.我正在调用其他接口的功能，但仅此接口不起作用.

yes i can call it. I am calling the functions of the other interfaces but only this interface doesn''t work.

好的，这不只是一点点的:)

你能解释一下
吗 为什么需要new mycert()

或您想在职能中拥有什么? :)

OK, it is not just a bit :)

Could you explain
why do you need a new mycert()

or what would you like to have in your function ? :)

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