Answer / riddhi

Query Interface method is used to get the pointer to the
interface specified in one of the parameters of this
method. Client then uses this pointer to call the method of
the component.
AddRef and Release are used to increase and decrease the
count of the instance of component loaded in memory
respectively. when the count reaches zero the component is
unloaded.

Answer / anand

To bring the lost object identity back to the component
thru QueryInterface and manage the life-cycle of the
component thru AddRef and Release by reference counting.

Explain queued components.

2 Answers  

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Differentiate normal DLL to COM DLL

7 Answers   Talisma,

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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?

0 Answers  

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What is the use of com component in .net?

0 Answers  

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Can I use com components from .net programs?

0 Answers  

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how you call a dll as a COM dll.

2 Answers  

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What happens when client calls CoCreateInstance?

2 Answers   Cap Gemini,

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How does a DCOM component know where to instantiate itself?

1 Answers  

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what is oops

11 Answers   Accenture,

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Define and explain about COM?

0 Answers  

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Write a JCL to copy only selected members from a partitioned data set to another partitioned data set. (Use: IEBCOPY)

1 Answers   Wipro,

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what is far pointer and what are the use of far poiter in com/dcom ?????

2 Answers   HCL,

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