List all objects of an OLE automation server
See the question and my original answer on StackOverflowYou can if the server has a Type Library (.TLB file) associated. Otherwise, there is no way.
You can find the TLB id (it's also a guid) reference if it exists as the default value of the registry key TypeLib, here:
HKCR\CLSID\<your CLSID>\TypeLib
And then, the TypeLib id points to
HKCR\TypeLib\<tlb id>
In which you can find the TLB path in the keys underneath (depending on the architecture, it can be difference on x86 or x64).
For example, here is the path to the standard ADO's 2.6 (ActiveX Data Objects) type library:
Once you have a TLB, you can use COM's API to browse it. That's ok from C++ or native clients, but for automation clients such as VB, VBScript, etc, there was this DLL "tlbinf32.dll" that allowed you to do it. Here is a link that talks about it: Accessing Type Libraries from VB