Creating a C++ COM client for C# COM server

Question

I have a C# ComServerProject that implements an out-of-proc COM server, and I've selected the option "Make assembly COM-visible" on server project's "Assembly Information" dialog. In the same solution I have a C++ ComClientProject that should use the COM interface defined in ComServerProject. However, I don't know how to actually use the interface defined in the server in my C++ client.

All of the Google search results say that you should do #import "ComServerProject.tlb" to import the type library from the COM server. But there is no .tlb file created during the build! I also tried checking the "Register for COM interop" box on the Build tab of the server project properties, but it still didn't create a .tlb file. Plus, it required me to run VS elevated, which I would like to avoid.

How can I get VS2010 to actually create whatever files are necessary to have a usable COM server?

John M Gant · Accepted Answer · 2010-07-26 19:47:46Z

1

Use Tlbexp on the generated assembly to create the .tlb.

Something like:

tlbexp ComServerProject.dll /out:ComServerProject.tlb

edited Jul 26, 2010 at 19:47

John M Gant

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answered Jul 26, 2010 at 19:20

Ando

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3 Comments

JSBձոգչ Over a year ago

Do I need an explicit post-build step for that, or can I somehow convince VS to do it for me?

Ando Over a year ago

I am not aware of any way of getting VS to call tlbexp without resorting to a post build step.

Contango Over a year ago

you can: in Visual Studio 2010, tick the "Register for COM interop" box under "Build" for the assembly.

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