[Qt-interest] QGraphicsItem::ItemSendsScenePositionChanges has no effect in Qt 4.6.3

[Nikos Chantziaras]

I have a QGraphicsPixmapItem subclass, and in its ctor I set the 
following flag:

   setFlag(QGraphicsItem::ItemSendsScenePositionChanges, true);

in order to have QGraphicsItem::itemChange() getting called whenever the 
items is moved.  This works just fine in Qt 4.7.  However, in 4.6.3, the 
version I need to support (Debian 6 uses that version), it doesn't. 
According to the docs though, it should work:

   http://doc.trolltech.com/4.6/qgraphicsitem.html#GraphicsItemFlag-enum

   "This flag was introduced in Qt 4.6."

Is there something I can do?  Qt 4.6 support is important in my case.