COM objects !!!

Graphics and GPU Programming Programming

Started by HDATA July 26, 2002 05:16 AM

0 comments, last by HDATA 21 years, 9 months ago

HDATA

122

Author

July 26, 2002 05:16 AM

Hello everybodyyyyyyyy, NICE TO SEE ALL OF YOUUU, AGAIN !!! I came back to ask other CRAZY question, again

Ok, i knew that for learning using of COM object, i have to read many of documentations ... But, i BEG you !!! Please, please tell me, what is QueryInterface !!! What is AddRef ??? I GOT CONFUSED

Please tell me what excatly occures when i use thease functions ??? Please help me !!! Thanks in advance !

MadKeithV

992

July 26, 2002 05:19 AM

QueryInterface allows you to attempt to retrieve a non-IUnknown interface from a COM-object. Basically, it allows you to ask any IUnknown (thus, any COM-object) what else it can do.

AddRef adds a reference-count - used to manage the lifetime of COM objects. The reference count basically tracks how many objects are using this object - when it falls to 0, that means nobody is using the object, and it can delete itself.

It's only funny 'till someone gets hurt.And then it's just hilarious.Unless it's you.