diff -r 19d37cb9c96c -r 05a18c56d9ca ui/ui/toolkit.h
--- a/ui/ui/toolkit.h	Sat Mar 22 19:45:44 2014 +0100
+++ b/ui/ui/toolkit.h	Mon Mar 24 11:21:59 2014 +0100
@@ -124,6 +124,7 @@
     void  (*set)(UiText*, char*);
     char* value;
     void  *obj;
+    void  *undomgr;
     // TODO: selection, undo, replace, ...
 };