title: Auto scroll a gtkscrolledwindow
body: <p>I have a form interface with a large number of horizontal drop down and text boxes that are inside a GTKscrolledWindow.  The form has to be aligned horizontally because there are an unlimited number of forms in the window (think tabel of forms). </p>
  
  <p>Is it (possible/how do I) auto-scroll the GTKScrolledWindow to the right when the operator tabs to the next form control which is off to the right of the screen.?  </p>
  
  <p>Related question would be how do I detect if the focused element (button etc) is visible in it's parent scrolledwindow.</p>
  
  <p>Thanks.</p>