c++ - IXSomething vs ISomething -

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i stumbled upon documentation com objects have 2 kinds of interfaces, 1 starting i, second ix. documentation says ix derived iunknown, , i derived idispatch.

is better use ix interfaces if use c++? far understand i interfaces designed scripting languages in case? there other differences?

the x belongs next word. feed vs xfeed. "extended", version 2 of api.


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