diff -r a56c2baa9429 -r 91f45354d1e2 ui/wpf/UIwrapper/UIwrapper/container.cpp
--- a/ui/wpf/UIwrapper/UIwrapper/container.cpp	Sun Feb 01 10:35:07 2015 +0100
+++ b/ui/wpf/UIwrapper/UIwrapper/container.cpp	Sun Feb 01 12:37:31 2015 +0100
@@ -20,3 +20,12 @@
 	*container = hbox;
 	return container;
 }
+
+
+
+/* ------------------- layout functions ------------------- */
+
+UI_EXPORT void __stdcall UIlayout_fill(gcroot<UI::Container^> *container, int fill) {
+	UI::Container ^ct = *container;
+	ct->Layout->Fill = fill;
+}