diff --git a/dw/fltkviewbase.cc b/dw/fltkviewbase.cc
index 29906bc..840e741 100644
--- a/dw/fltkviewbase.cc
+++ b/dw/fltkviewbase.cc
@@ -99,8 +99,9 @@ void FltkViewBase::draw ()
    if ((d & FL_DAMAGE_USER1) && !(d & FL_DAMAGE_EXPOSE)) {
       lout::container::typed::Iterator <core::Rectangle> it;
 
-      for (it = drawRegion.rectangles (); it.hasNext (); ) {
-         draw (it.getNext (), DRAW_BUFFERED);
+      for( auto &rectangle: drawRegion )
+      {
+         draw( rectangle.get(), DRAW_BUFFERED );
       }
 
       drawRegion.clear ();
diff --git a/dw/types.cc b/dw/types.cc
index ba49bbd..e49847c 100644
--- a/dw/types.cc
+++ b/dw/types.cc
@@ -220,16 +220,6 @@ bool Polygon::isPointWithin (int x, int y)
    }
 }
 
-Region::Region()
-{
-   rectangleList = new container::typed::List <Rectangle> (true);
-}
-
-Region::~Region()
-{
-   delete rectangleList;
-}
-
 /**
  * \brief Add a rectangle to the region and combine it with
  * existing rectangles if possible.
@@ -238,13 +228,11 @@ Region::~Region()
  */
 void Region::addRectangle (Rectangle *rPointer)
 {
-   container::typed::Iterator <Rectangle> it;
-   Rectangle *r = new Rectangle (rPointer->x, rPointer->y,
-      rPointer->width, rPointer->height);
-
-   for (it = rectangleList->iterator (); it.hasNext (); ) {
-      Rectangle *ownRect = it.getNext ();
+   auto r= std::make_unique< Rectangle >( rPointer->x, rPointer->y,
+      rPointer->width, rPointer->height );
 
+   for( auto &ownRect: rectangleList )
+   {
       int combinedHeight =
          misc::max(r->y + r->height, ownRect->y + ownRect->height) -
          misc::min(r->y, ownRect->y);
@@ -252,7 +240,7 @@ void Region::addRectangle (Rectangle *rPointer)
          misc::max(r->x + r->width, ownRect->x + ownRect->width) -
          misc::min(r->x, ownRect->x);
 
-      if (rectangleList->size() >= 16 ||
+      if (rectangleList.size() >= 16 ||
          combinedWidth * combinedHeight <=
          ownRect->width * ownRect->height + r->width * r->height) {
 
@@ -261,11 +249,11 @@ void Region::addRectangle (Rectangle *rPointer)
             r->width = combinedWidth;
             r->height = combinedHeight;
 
-            rectangleList->removeRef (ownRect);
+            rectangleList.remove( ownRect );
       }
    }
 
-   rectangleList->append (r);
+   rectangleList.push_back( std::move( r ) );
 }
 
 Content::Type Content::maskForSelection (bool followReferences)
diff --git a/dw/types.hh b/dw/types.hh
index dfff97b..999d06c 100644
--- a/dw/types.hh
+++ b/dw/types.hh
@@ -5,6 +5,9 @@
 #   error Do not include this file directly, use "core.hh" instead.
 #endif
 
+#include <memory>
+#include <list>
+
 namespace dw {
 namespace core {
 
@@ -140,20 +143,22 @@ public:
 class Region
 {
 private:
-   lout::container::typed::List <Rectangle> *rectangleList;
+   std::list< std::unique_ptr< Rectangle > > rectangleList;
 
 public:
-   Region ();
-   ~Region ();
-
-   void clear () { rectangleList->clear (); };
+   void clear () { rectangleList.clear(); }
 
    void addRectangle (Rectangle *r);
 
-   lout::container::typed::Iterator <Rectangle> rectangles ()
+   auto begin()
    {
-      return rectangleList->iterator ();
-   };
+      return rectangleList.begin();
+   }
+
+   auto end()
+   {
+      return rectangleList.end();
+   }
 };
 
 /**