title: Q_PROPERTY in Qt?
body: <p>I cant really figure out why do I need it, Been reading:
  <a href="http://doc.qt.io/qt-4.8/properties.html#requirements-for-declaring-properties" rel="nofollow noreferrer">http://doc.qt.io/qt-4.8/properties.html#requirements-for-declaring-properties</a></p>
  
  <p>still cant really understand the use of it.
  any kind of help would be great!</p>