How to add unmanaged dll to show up in Add Reference's COM tab

I am currently trying to use pHash.dll on http://phash.org

Unfortunately it was written in C++, I'd have to use DLLImport

But the problem I am having is how to register pHash.dll (compiled thru VS2010/C++)

I've tried to register using regsrv32 and have been fruitless giving an error message.

Now, How can 开发者_运维百科i register pHash to show up in COM tab?

The DLL in question exports flat APIs. The Add COM References Tab is for DLLs that expose COM objects. Instead of using Add Reference to refer to the DLL, you need to write a pinvoke declaration to let .NET know about your flat API.

Here's a helpful article:

http://msdn.microsoft.com/en-us/magazine/cc164123.aspx

Martyn