[Qt-creator] How set __cplusplus more than 201103L in QtC Editor?

[Карелин Павел]

Hi! I congratulate all with come New year!

In my project I use std::condition_variable. But using 
std::condition_variable is not very convenient, since its methods are 
not available in the QtC editor. See picture in attachment.
How to make std::condition_variable methods accessible?
I use QtC 4.5 gitrev: 30bd05b792259a559e98c6a19035f7b6adaac1ce

--
BR, Pavel Karelin
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