title: Storing and Retrieving a QFlags
body: <p>I am planning to use <code>QFlags</code> for bit manipulation, I have a lot of bits to set(about 400), the problem I am facing now is if I convert <code>QFlags</code> to int I get 2 ^ 400 ,which I am unable to store it in a database, so my question if there is a method to store <code>QFlags</code> in a database.</p>