Index: uspace/lib/gui/window.c
===================================================================
--- uspace/lib/gui/window.c	(revision 2cc1ec062d6e172ce570169e6b0485b9da3db610)
+++ uspace/lib/gui/window.c	(revision b5143bd82217d3abb5c20adca5ee226d2e030878)
@@ -591,5 +591,5 @@
 }
 
-window_t *window_open(const char *winreg, bool is_main, bool is_decorated,
+window_t *window_open(const char *winreg, window_flags_t flags,
     const char *caption)
 {
@@ -598,6 +598,6 @@
 		return NULL;
 	
-	win->is_main = is_main;
-	win->is_decorated = is_decorated;
+	win->is_main = flags & WINDOW_MAIN;
+	win->is_decorated = flags & WINDOW_DECORATED;
 	win->is_focused = true;
 	prodcons_initialize(&win->events);
@@ -632,5 +632,5 @@
 	service_id_t in_dsid;
 	service_id_t out_dsid;
-	rc = win_register(reg_sess, &in_dsid, &out_dsid);
+	rc = win_register(reg_sess, flags, &in_dsid, &out_dsid);
 	async_hangup(reg_sess);
 	if (rc != EOK) {