Aha! That's a start - that lets me return the new Win32::OLE object. I had already seen CreatePerlObject, but I didn't think of a way to call it without recompiling the XS. Since it just makes a DLL... DynaLoader/calling it with Win32::API is clever.

For that matter, I -may- be able to change that "Get COM object from HWND" to get me the original document inside the XS. From there, it's just a small leap to getting the right interface.

This may well be enough to get me started. Thanks!