Interested to Buy Any Domain ? << Click Here >> for more details...
What is IUnknown? What methods are provided by IUnknown?
- 3 Answers
- 10446 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 |
Explain queued components.
Explain JIT activation?
Can I use com components from .net programs?
What is reference counting in com?
What is In-proc?
What should QueryInterface functions do if requested object was not found?
How do you make a NET component talk to a COM component?
Futures of COM
where can i use pmcmd commands of informatica
Explain Futures of COM?
How to create an instance of the object in COM?
can a COM interface be implemented by more than one COM class in the same COM component?
2 Answers Cap Gemini, Honeywell,
MFC 
