modifying QSet via STL iterator

[tuli]

I have a QSet<quint64>, and i want to add 10 to every element in the Set. Since QSetIterator<> only supports const access, i tried using an STL-style iterator.
And sure enough it works - but only for const access. If i try to write to the element, i get a compile time error:

QSet<quint64> sss;
	sss << 3 << 4 << 5;
 
	for(QSet<quint64>::iterator it=sss.begin(); it!=sss.end(); ++it)
	{
		*it += 10;
	}

QSet<quint64> sss;
	sss << 3 << 4 << 5;

	for(QSet<quint64>::iterator it=sss.begin(); it!=sss.end(); ++it)
	{
		*it += 10;
	}

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error:

Error 1 error C3892: 'it' : you cannot assign to a variable that is const

i am using winxpx86sp3, VS2008SP1+QtPlugin, Qt 484.


Any ideas?