title: how to move scrollbars simultaneously in qt
body: <p>I have two view  whose perspectives are xy and xz.  These views have their own scrollbars and x side of these views are equal. When i move scroll bar of x sides , i want x scrollbars to move simultaneously.</p>
  
  <p>Class of views is <code>QGraphicsView</code> and scrollbars of these views are their own scrollbar.
  How can i make it? Any help will be appreciated.</p>
  
  <p>Thanks</p>