[RESOLVED] COM interface and inheritance

[Deepak_Sharma]

hello Igor,

here is the attached sample for it. it would be very nice if you could explain. i am stuck here


Case 3: Ibase has Iunknown implemented.
one more confusion i have is that when i return the interface pointer do it need to addref or client needs to. i think i need to call addref(). client would just release it. so that it would be unloaded automatically.

however i do not see any addRef() when i use Case 3. i e.

Derived1::CreateInstance (ppbase ) // does it mean that it would call addref automatically

because in all other cases (case 1 and case 2 )i saw random crashes if i do not explicitly call AddRef()

regards
d