What happens when client calls CoCreateInstance?

Answers were Sorted based on User's Feedback



What happens when client calls CoCreateInstance?..

Answer / chandrasekharreddy siddamreddy

Client Involes
|
CoCreateInstance(IID_IMyInterface)
|
DLLGetClassOject() - This is there in server DLL
|
CoGetClassObject(IID_IClassFactory) - this will return
IClassFactory Interface Pointer. Then call to
IClassFactory->CreateInstace() here we are instatiating the
our class and returning the IMyInterface pointer to client.

Is This Answer Correct ?    4 Yes 0 No

What happens when client calls CoCreateInstance?..

Answer / guest

- Reads Root\Classes\ProgId for the matching ProgID
- Reads Root\Classes\ProgId for the matching CLSID. The
CLSID is read from the above step.
- From the CLSID key, the server type and image filename is
known.
- Depending upon the server type, it starts the server.
- Calls CoGetClassObject function to get a handle to the
factory object.
- Then calls createinstance on the factory interface to get
the pointer to the derived object.

Is This Answer Correct ?    3 Yes 0 No

Post New Answer

More COM DCOM Interview Questions

What is reference counting in com?

0 Answers  


Can I use .net components from com programs?

0 Answers  


what is oops

11 Answers   Accenture,


Does .net replace com?

0 Answers  


Define and explain about COM?

0 Answers  






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

2 Answers   HCL,


Explain queued components.

2 Answers  


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?

3 Answers  


What is dcom?

0 Answers  


How to create an instance of the object in COM?

0 Answers  


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  


How do we create dcom object in vb6?

0 Answers  


Categories