Let?s assume we have object B and aggregated object C (in-
proc server), created by B. Can you access any interface of
B from C? What?s the difference between aggregated and
contained objects?
- 3 Answers
- 5241 Views
- I also Faced
- E-Mail Answers
Answer Posted / mms zubeir
For the first question, Yes, we can since the QueryInterface
() rules of thumb suggest that if we can query an interface
of C from B, we should be able to query the viceversa.
The IUnknown implementation of both the objects has to do
the 'magic'.
For the second question, Aggregation bounds outer and inner
objects together and gives the user the interface pointers
of either objects to access it directly so that the user
never knows the objects are aggregated.
But when containment is used, the interface of inner object
never exposed to the client directly rather the outer
object receives the calls and forwards internally. Here
also, the user doesn't know the objects are contained.
| Is This Answer Correct ? | 2 Yes | 1 No |
Post New Answer View All Answers
Once I have developed the com wrapper do I have to still register the com in registry?
Does .net replace com?
What is dcom?
Suppose we have object B and aggregated object C (in- proc server), created by B. Can you access any interface of B from C?
What is the difference between aggregated and contained objects?
Define and explain about COM?
How do we create dcom object in vb6?
Is dcom dead?
Which namespace do the classes, allowing you to support COM functionality, are located?
Explain Futures of COM?
Can you explain what is dcom?
How to create an instance of the object in COM?
What is the use of com component in .net?
Suppose we have object b and aggregated object c (in- proc server), created by b. Can you access any interface of b from c? What?s the difference between aggregated and contained objects?
Can I use .net components from com programs?
