How to draw image using QGraphicsItem
http://stackoverflow.com/questions/13238130/how-to-draw-image-using-qgraphicsitem
http://www.codeprogress.com/cpp/libraries/qt/showQtExample.php?index=487&key=CustomQGraphicsItem
How to draw image using QGraphicsItem
http://stackoverflow.com/questions/13238130/how-to-draw-image-using-qgraphicsitem
http://www.codeprogress.com/cpp/libraries/qt/showQtExample.php?index=487&key=CustomQGraphicsItem