Interested to Buy Any Domain ? << Click Here >> for more details...
What is IUnknown? What methods are provided by IUnknown?
- 3 Answers
- 10602 Views
- IBM, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / cheruku raghu
IUnknown is a type of COM Interface.
Every COM class implements an interface named IUnKnown.
IUnKnown contains three methods:
1) HRESULT QueryInterface()
2) ULONG AddRef()
3) ULONG Release()
| Is This Answer Correct ? | 11 Yes | 0 No |
Answer / mahesh
Iunknow is the base interface for any com component.
it supports three methods
addref()
release()
queryinterface()
| Is This Answer Correct ? | 8 Yes | 0 No |
Answer / krithiga.v
IUnknown is the base interface to all other derivable interface.
It contains the methods such as
>queryInterface()
>addRef()
>releaseRef()
| Is This Answer Correct ? | 1 Yes | 2 No |
What is In-proc?
what is oops
Can I use .net components from com programs?
Which namespace do the classes, allowing you to support COM functionality, are located?
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?
How to create an instance of the object in COM?
What is IUnknown? What methods are provided by IUnknown?
Explain Futures of COM?
Write a JCL to copy only selected members from a partitioned data set to another partitioned data set. (Use: IEBCOPY)
Explain transaction atomicity?
how you call a dll as a COM dll.
Do COM keep track of all the object references(Accounting)?
MFC 
