Iunknow is the base interface for any com component. it supports three met

What is IUnknown? What methods are provided by IUnknown?

Question Posted / mahesh

Answer Posted / 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

Please Help Members By Posting Answers For Below Questions

What are queued components?

1123

Define and explain about COM?

1174

What is the difference between aggregated and contained objects?

1051

What is reference counting in com?

1015

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

2674

Explain Futures of COM?

1080

Can I use .net components from com programs?

1122

What is the use of com component in .net?

1041

Can I use com components from .net programs?

1146

Suppose we have object B and aggregated object C (in- proc server), created by B. Can you access any interface of B from C?

1041

How to create an instance of the object in COM?

1031

Is dcom dead?

1104

how to call a dll as a COM dll?

1222

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

1112

Does .net replace com?

1099