What is IUnknown? What methods are provided by IUnknown?
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
|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
|Is This Answer Correct ?||1 Yes||2 No|
Define and explain COM?
How does a DCOM component know where to instantiate itself?
Explain queued components.
Explain object pooling?
where can i use pmcmd commands of informatica
Futures of COM
What is a moniker ?
Which tool is used to configure the port range and protocols for DCOM communications?
What happens when client calls CoCreateInstance?
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?
can a COM interface be implemented by more than one COM class in the same COM component?
what is oops