import "oaidl.idl";
import "ocidl.idl";

// generic interfaces that express a set of items

[
    helpstring("Unknown Object Array"),
    uuid(92CA9DCD-5622-4bba-A805-5E9F541BD8C9),
    object,
    pointer_default(unique)
]
interface IObjectArray : IUnknown
{
    HRESULT GetCount([out] UINT *pcObjects);
    HRESULT GetAt([in] UINT uiIndex, [in] REFIID riid, [out, iid_is(riid)] void **ppv);
}

[
    uuid(5632b1a4-e38a-400a-928a-d4cd63230295),
    object,
    pointer_default(unique)
]
interface IObjectCollection : IObjectArray
{
    HRESULT AddObject([in] IUnknown *punk);
    HRESULT AddFromArray([in] IObjectArray *poaSource);
    HRESULT RemoveObjectAt([in] UINT uiIndex);
    HRESULT Clear();
}