getId method
Implementation
int getId(Pointer<GUID> pkfid) => ptr.ref.vtable
.elementAt(3)
.cast<
Pointer<
NativeFunction<Int32 Function(Pointer, Pointer<GUID> pkfid)>>>()
.value
.asFunction<
int Function(Pointer, Pointer<GUID> pkfid)>()(ptr.ref.lpVtbl, pkfid);