QMutex QMutex::Recursive is not a type name

[Qiieha]

Hi all !

I have a class, which has a member

QMutex mutex(QMutex::Recursive);

QMutex mutex(QMutex::Recursive);

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but the compiler says, that QMutex::Recursive is not a type name. But I need the Recursive Mode, cause the default Mode doesn't help me.
QMutex is included.

thx