1 files changed, 4 insertions, 0 deletions
diff --git a/src/data.h b/src/data.h
index 2164b5a..e87d63e 100644
--- a/src/data.h
+++ b/src/data.h
@@ -23,6 +23,7 @@
 #define _RATPOISON_DATA_H
 
 #include "linkedlist.h"
+#include "number.h"
 
 #include <X11/X.h>
 #include <X11/Xlib.h>
@@ -109,6 +110,9 @@ struct screen_info
      always be one in the list. */
   struct list_head rp_window_frames;
 
+  /* Keep track of which numbers have been given to frames. */
+  struct numset *frames_numset;
+
   /* Pointer to the currently focused frame. One for each screen so
      when you switch screens the focus doesn't get frobbed. */
   rp_window_frame *rp_current_frame;