Rundll32加载顺序问题

Question

My product consists of two dlls (A.dll and B.dll for clarity), A.dll depends on B.dll. Both A and B dlls are in the same folder (say c:\\app). At the same time old version of B.dll is in Windows\\System32 folder. When I try to run following command from command prompt (current folder is c:\\app):

rundll32.exe "c:\app\A.dll",DoWork

I receive error because rundll32 uses old version of B.dll from System32 folder. I tried to use SetDllDirectory API from DllMain function of A.dll library to add c:\\app folder to the search path but it doesn't work for me.
I can't find any useful and complete information about rundll32 internals or any information about dll loading order.
Is it possible to execute rundll32 successfuly in this deployment configuration? (I mean load new B.dll version from c:\\app folder).

Answer 1

I'd get rid of the old Dll, or use another name for the new dll. Having two versions of something that is supposed to do the same, and giving it the same name, is likely to cause havoc.

Answer 2

DLL Hell on SO

Well, it's kind of cool in a retro sort of way. Here is a thought: try copying rundll32.exe into the same folder as the new dll's and your product, and run it from there. It might work...