Writing C# managed code in native C++

Question

I am developing a managed lib (using Microsoft Web Services) and I am including it into a c++ project. The project doesn't use /clr option, so when I include my library's header file VS2005 show me an error saying I have to use /clr option. Doing this I have a incompatibility with /EHs command line option (error D8016), but changing from EHs to no exception handling not solving problem and keep showing me same error .

Any suggestion is welcome.

Thank you in advance.

You cannot create a managed lib without using the /clr option. — Gabe
– Gabe, Commented May 23, 2011 at 10:35
@user765829 : /EHa must be used in conjunction with /clr. — ildjarn
– ildjarn, Commented May 23, 2011 at 15:02

Daniel Rose · Accepted Answer · 2011-05-23 11:13:21Z

4

If you have unmanaged C++ code and want to use managed code, you have a few options:

Change your unmanaged code to C++/CLI, by use of the /clr switch.
Write a C++/CLI wrapper library. It could DLL-export unmanaged functions which you call in your unmanaged code.
Skip the wrapper library and directly DLL-export unmanaged functions via this library.

answered May 23, 2011 at 11:13

Daniel Rose

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vines · Accepted Answer · 2011-05-23 10:57:37Z

1

You can't use a managed lib from an unmanaged c++ application. Since you add the /clr option, your c++ application becomes managed too (just for the record :) )

Here's what might help you: http://msdn.microsoft.com/en-us/library/ffkc918h.aspx - the restrictions of the /clr option.

answered May 23, 2011 at 10:57

vines

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2 Comments

Daniel Rose Over a year ago

Almost correct: To use a managed library from unmanaged code, you need to create a wrapper library or otherwise export unmanaged symbols.

user765829 Over a year ago

no, its wont work , in that link it tells tat wat are thing clr not compitable , i wann to solve this error , no solution till found on specified link :(

Andrew Savinykh · Accepted Answer · 2011-05-23 11:07:38Z

0

It is possible to write managed c++ adapter, that will call the C# library, and call this adapter from unmanaged c++ program as you would usually call a normal c++ library. You will compile your adapter library with /clr and your main c++ program without /clr if for whatever reason you want to keep it unmanaged.

answered May 23, 2011 at 11:07

Andrew Savinykh

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sehe · Accepted Answer · 2011-05-23 11:45:13Z

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You can embed a mono environment and start an AppDomain. mono's runtime API will allow you to instantiate classes and call members on them. It will be clumsy, but is will work

http://www.mono-project.com/Embedding_Mono

Note that Mono is a full .Net 4.0 compliant CLR and it can work with the Microsoft core libraries on Windows.

On windows and Unix it can work with the Mono corlib/class libraries. There are areas not covered in Mono, but they seem to get sparse. You can use the MoMa tool to spot whether your application uses incompatible/incomplete APIs.

Or you can just use the Microsoft .NET framework, assuming you're on windows anyway!

answered May 23, 2011 at 11:45

sehe

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