Move track widget pointer sorting func into track widget class.

Track.C

@@ -27,19 +27,10 @@
 
 queue <Track_Widget *> Track::_delete_queue;
 
-
-
-static bool
-sort_func ( Track_Widget *lhs, Track_Widget *rhs )
-{
-    return *lhs < *rhs;
-}
-
-
 void
 Track::sort ( void )
 {
-    _widgets.sort( sort_func );
+    _widgets.sort( Track_Widget::sort_func );
 }
 
 void

Track_Widget.H

@@ -89,6 +89,7 @@ public:
                 return;
 
             _selection.push_back( this );
+            _selection.sort( sort_func );
 
             redraw();
         }
@@ -216,4 +217,10 @@ public:
     virtual void draw_label ( const char *label, Fl_Align align );
     virtual int handle ( int m );
 
+    static bool
+    sort_func ( Track_Widget *lhs, Track_Widget *rhs )
+        {
+            return *lhs < *rhs;
+        }
+
 };