wxDirDialog now sorts its entries

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@1240 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/generic/dirdlgg.cpp

@@ -268,6 +268,8 @@ void wxDirCtrl::OnExpandItem( const wxTreeEvent &event )
   }
   CreateItems(event.GetItem());
   wxEndBusyCursor();
+  
+  SortChildren( event.GetItem() );
 };