Question

With a COM interface method declared as this:

[ object,   uuid(....), ] interface IFoo : IUnknown  {   HRESULT Foo([in, out] CACLSID * items); } 

With regards to marshalling, is the server allowed to reallocate the counted array? (I think it is, but I am not sure anymore)

Its current implementation only replaces the existing ID’s, but I’d like to implement a change (that would not break contract) that may return more items without introducing a new interface.

[edit] please note that CACLSID is already an array, containing a count and a pointer.

Answer 1

I have not done COM for a very long time but is it even possible to allocate a new array? In that case should it not be CACLSID ** items ?