64 to 32 bit Interop - how?

Question

I need to integrate some legacy 32-bit code - for which I don\'t have the source code, into a project in such a way that it can be called from a 64-bit .NET assembly. The or

Answer 1

What you need to do is create two processes communicating with IPC. This way, one can be 32 bit, and one can be 64 bit. You need to create a 32 program which links with the COM object and exposes its API through some IPC mechanism such as a named pipe. This way your .NET program can access it from another process.