Fix full-screen code when there is no window manager (Bug#21317)

[gnu-emacs] / src / xterm.h

diff --git a/src/xterm.h b/src/xterm.h
index 5622344d97ccf63eccebf0778185c3dae154d09b..61659066809d7fdd7b04b004c3c0513b12773164 100644 (file)
--- a/src/xterm.h
+++ b/src/xterm.h
@@ -1072,6 +1072,7 @@ x_display_set_last_user_time (struct x_display_info *dpyinfo, Time t)
 }
 
 extern void x_set_sticky (struct frame *, Lisp_Object, Lisp_Object);
+extern bool x_wm_supports (struct frame *, Atom);
 extern void x_wait_for_event (struct frame *, int);
 extern void x_clear_under_internal_border (struct frame *f);