# DllUnregisterServer

Instructs an in-process server to remove only those entries created through DllRegisterServer.

STDAPI DllUnregisterServer(void);

Return Values

This function supports the standard return values E_OUTOFMEMORY and E_UNEXPECTED, as well as the following:

S_OK
  The registry entries were created successfully.
S_FALSE
  Unregistration of this server’s known entries was successful, but other entries still exist for this server’s classes.
SELFREG_E_TYPELIB
  The server was unable to remove the entries of all the type libraries used by its classes.
SELFREG_E_CLASS
  The server was unable to remove the entries of all the object classes.

Remarks

The server must not disturb any entries that it did not create which currently exist for its object classes. For example, between registration and unregistration, the user may have specified a TreatAs relationship between this class and another. In that case, unregistration can remove all entries except the TreatAs key and any others that were not explicitly created in DllRegisterServer. The Win32 registry functions specifically disallow the deletion of an entire populated tree in the registry. The server can attempt, as the last step, to remove the CLSID key, but if other entries still exist, the key will remain.

See Also

DllRegisterServer