Interface Key
Registers new
interfaces by associating an interface name with an interface ID (IID). 
Registry Entry
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface
If your
application adds a new interface, the Interface key must be completed for OLE 2
to register the new interface. There must be one IID subkey for each new
interface. 
Note that you
must use ProxyStubCLSID32
because the IID-to-CLSID mapping may be different for 16-and 32-bit interfaces.
The IID-to-CLSID depends on the way the interface proxies are packaged into a
set of proxy DLLs. 
SubKeys and Named Values
\Interface
|     <IID>  | Interface
  identifier | 
|         \BaseInterface  | Interface
  derived from | 
|         \NumMethods | Number of
  methods | 
|         \ProsyStubCLSID | Maps IID to
  CLSiD (16-bit DLLs) | 
|         \ProsyStubCLSID32 | Maps IID to
  CLSiD (32-bit DLLs) | 
See Also