1 files changed, 7 insertions, 1 deletions

diff --git a/src/termhooks.h b/src/termhooks.h
index bd1fdc369e5..4e33fbe9d44 100644
--- a/src/termhooks.h
+++ b/src/termhooks.h
@@ -59,7 +59,9 @@ extern int (*set_terminal_window_hook) ();
 enum scroll_bar_part {
   scroll_bar_above_handle,
   scroll_bar_handle,
-  scroll_bar_below_handle
+  scroll_bar_below_handle,
+  scroll_bar_up_arrow,
+  scroll_bar_down_arrow,
 };
 
 /* Return the current position of the mouse.
@@ -245,6 +247,10 @@ enum event_kind
                                    whose scroll bar was clicked in.
                                    .timestamp gives a timestamp (in
                                    milliseconds) for the click.  */
+#ifdef WINDOWSNT
+  win32_scroll_bar_click,       /* as for scroll_bar_click, but only generated
+                                   by MS-Windows scroll bar controls. */
+#endif
   selection_request_event,      /* Another X client wants a selection from us.
                                    See `struct selection_event'.  */
   selection_clear_event,        /* Another X client cleared our selection.  */