What are the purposes of AddRef, Release and QueryInterface functions?

Post

View All

Tushar Agrawal

What are the purposes of AddRef, Release and QueryInterface functions?

By Tushar Agrawal in COM Interop on Aug 01 2006

0
5.8k
1

Post Your Answer

Aug, 2006 1
AddRef increments reference count of the object, Release decrements reference counter of the object and QueryInterface obtains a pointer to the requested interface.
- 0

What is IUnknown? What methods are provided by IUnknown?

What should QueryInterface functions do if requested object was not found?