title: create a scrollbar in a submenu qt?
body: <p>I have a map application and a submenu which has dynamically added objects (i.e. points on a map) added to the submenu, depending on the layer that is loaded.  I have the ability to hide each individual objects (i.e. a point) by clicking on the corresponding submenu item.  Is there any way to organize the submenu?  When there are a lot of points (i.e. 100) the entire submenu takes up the screen.  Can I add a scrollbar to a submenu?  I looked in the documentation, but couldn't find anything that support this feature.</p>