Answer Posted / balaji

We can use CreateInstance And CoCreateInstance to create an
instance of the object in COM.

HRESULT CreateInstance(void* pfnCreateInstance,REFIID riid,
void** ppvObj );

Parameters
pfnCreateInstance
[in] A pointer to a creator function.
riid
[in] The IID of the requested interface.
ppvObj
[out] A pointer to the interface pointer identified by
riid. If the object does not support this interface, ppvObj
is set to NULL.
Return Value

Define and explain about COM?

613

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Can I use com components from .net programs?

603

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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?

584

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What is dcom?

535

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How to create an instance of the object in COM?

575

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Which namespace do the classes, allowing you to support COM functionality, are located?

2100

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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?

505

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Once I have developed the com wrapper do I have to still register the com in registry?

657

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Explain Futures of COM?

576

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Can I use .net components from com programs?

611

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What is the difference between aggregated and contained objects?

569

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What are queued components?

585

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Can you explain what is dcom?

543

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What is the use of com component in .net?

593

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Is dcom dead?

625

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