c++ - Is Nokia mis-using static_cast? -

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I just came in:

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  QWidget * pw = static_cast & lt; QWidget * & gt; (Guardian);   
 The parent is of type: QObject, which is the base class of QWidget, so in this case, isnt: should dynamic_cast be used?  
 Like:  
  QWidget * pw = dynamic_cast & lt; QWidget * & gt; (Original)   
 Thanks,   
 
 
 If you know that You are casting from a descendant to an offspring from below (i.e., you know that the object is actually an example of the descendant), then static_cast is completely legal (and more executable).

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