This directory contains an assembly Moq.Types.ComTypes.dll containing Component Object Model (COM) interop types, used to test various aspects of Moq compatibility with COM.

This assembly can be built from the ComTypes.idl definition file also contained in this directory.

In order to build the DLL, you will need the following tools:

• midl (Microsoft's MIDL Compiler) for producing a Type Library from an .idl source file. This tool is part of the Windows SDK. See "Using the MIDL Compiler" on Microsoft Docs for more information.

• tlbimp (Microsoft's .NET Framework Type Library to Assembly Converter) for producing a COM interop assembly from a Type Library. This tool is part of the .NET Framework SDK, and it is automatically installed with Visual Studio. See "Tlbimp.exe (Type Library Importer)" on Microsoft Docs for more information.

• Optionally, peverify (Microsoft's .NET Framework PE Verifier) which is also part of the .NET Framework SDK and installed together with Visual Studio. See "Peverify.exe (PEVerify Tool)" on Microsoft Docs

Open a command prompt and ensure that the tools mentioned above can be found in the PATH. For instance, start Visual Studio's developer command prompt.

Next, you can either run the BuildDLLFromIDL.cmd batch file found in this directory, or run the following equivalent steps manually:

1. Create a COM Type Library (a .tlb file) from the .idl definition:

   midl.exe /mktyplib203 ^
            /env win32 ^
            /tlb ComTypes.tlb ^
            ComTypes.idl
   

2. Convert the generated type library to a .NET interop types assembly:

   tlbimp ComTypes.tlb ^
          /out:Moq.Tests.ComTypes.dll ^
          /namespace:Moq.Tests.ComTypes ^
          /keyfile:..\..\Moq.snk ^
          /asmversion:4.0.0.0
   

3. Optionally verify the generated assembly:

   peverify Moq.Tests.ComTypes.dll