Win32OLE used in 64 bit ruby cannot load 32 bit C++ Dll

Question

I am trying to load a C++ DLL inside my Ruby application as a binary object. I have registered the Interface using regsrv32 and load the Dll using Win32OLE .. but if i am running a 64 bit variant of Ruby I cannot load a 32 bit C++ dll and visa versa. the only combinations that works are

32 bit ruby loads a 32 bit C++ Dll. 64 bit ruby loads a 64 bit C++ Dll

The only possible way I see here is to fork out a 32 bit ruby process to register and load the 32 bit dll via Win32OLE .

Answer 1

Old question, but no answer so far, so I try :).

As ruby is using 64bit and your COM+ might be 32 bit it will not run in library mode.

To solve this you register your COM+ component and afterwards you setup your dll to a server application in dcomcnfg.exe .

This will run your dll in a 32 bit dllhost.exe and then ruby can successful call your DLL via dll = WIN32OLE.new("your.dll")

Note: You might need to set an extra Identiy.