WIX custom action: use dllimport

Question

I have a WiX installer and Custom Actions project. I added C# library as reference to Custom action\'s project. This C# dll uses DllImport to one C++ dll. When installing I rece

Answer 1

I've had this issue before. After reading through the MSBuild files for wix I eventually found a property that is used as a list for the dlls needed in the self-extracting package that contains the custom action dll.

in wix.ca.targets (in the sdk folder) there is a property called CustomActionContents that is used when running makesfxca.

Here's the comment for this set of msbuild targets which package your custom action dll.

and

So it looks like you can mark your reference to the mycpp.dll as copy local and it will be automatically picked up or you can add a new property in your custom action project (probably edit the csproj and add the property) which contains the path to the dll and it will get picked up.