diff --git a/headers/private/interface/WindowPrivate.h b/headers/private/interface/WindowPrivate.h
new file mode 100644
index 0000000000..6240e2b692
--- /dev/null
+++ b/headers/private/interface/WindowPrivate.h
@@ -0,0 +1,25 @@
+/*
+ * Copyright 2005, Jérôme Duval, jerome.duval@free.fr.
+
+ * Distributed under the terms of the MIT License.
+ */
+
+#ifndef _WINDOW_PRIVATE_H
+#define _WINDOW_PRIVATE_H
+
+/* Private window looks */
+
+const window_look kDesktopWindowLook = window_look(4);
+const window_look kLeftTitledWindowLook = window_look(25);
+const window_look kMenuWindowLook = window_look(1025);
+
+/* Private window feels */
+
+const window_feel kDesktopWindowFeel = window_feel(1024);
+
+/* Private window types */
+
+const window_type kWindowScreenWindow = window_type(1026);
+
+#endif //_WINDOW_PRIVATE_H
+