test.idl

[
  uuid(1431CA7D-F684-4eb3-B00D-E72D8B116E94),
  version(1.0),
  helpstring("test")
]
library test
{
    importlib("stdole2.tlb");

    [
      odl,
      uuid(5A7E6719-A3EA-4cfd-87DD-8C05EB589EA2),
      helpstring("CallAddressOf interface")
    ]
    interface CallAddressOf : IUnknown {
        HRESULT Call(
                        [in] long pfn, 
                        [in] long arg);
	};                     
};