--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/scrollbar.h	Mon Aug 13 11:28:15 2007 +0200
@@ -0,0 +1,84 @@
+/* Define scrollbar instance.
+   Copyright (C) 1994, 1995 Board of Trustees, University of Illinois.
+
+This file is part of XEmacs.
+
+XEmacs is free software; you can redistribute it and/or modify it
+under the terms of the GNU General Public License as published by the
+Free Software Foundation; either version 2, or (at your option) any
+later version.
+
+XEmacs is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with XEmacs; see the file COPYING.  If not, write to
+the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
+
+/* Synched up with: Not in FSF. */
+
+#ifndef _XEMACS_SCROLLBAR_H_
+#define _XEMACS_SCROLLBAR_H_
+
+#ifdef HAVE_SCROLLBARS
+
+struct scrollbar_instance
+{
+  /* Used by the frame caches. */
+  struct scrollbar_instance *next;
+
+  /* Pointer back to the mirror structure attached to. */
+  struct window_mirror *mirror;
+
+  /* This flag indicates if the scrollbar is currently in use. */
+  char scrollbar_is_active;
+
+  /* This flag indicates if a data parameter has changed. */
+  char scrollbar_instance_changed;
+
+  /* A structure of auxiliary data specific to the device type.
+     struct x_scrollbar_data is used for X window frames; defined in
+     scrollbar-x.h */
+  void *scrollbar_data;
+};
+
+#define SCROLLBAR_INSTANCE_FRAME(inst) (inst->mirror->frame)
+
+void init_frame_scrollbars (struct frame *f);
+void init_device_scrollbars (struct device *d);
+void init_global_scrollbars (struct device *d);
+void free_frame_scrollbars (struct frame *f);
+void release_window_mirror_scrollbars (struct window_mirror *mir);
+void update_window_scrollbars (struct window *w,
+			       struct window_mirror *mirror,
+			       int active, int horiz_only);
+#ifdef MEMORY_USAGE_STATS
+int compute_scrollbar_instance_usage (struct device *d,
+				      struct scrollbar_instance *inst,
+				      struct overhead_stats *ovstats);
+#endif
+
+extern Lisp_Object Vscrollbar_width, Vscrollbar_height;
+
+extern Lisp_Object Qscrollbar_line_up;
+extern Lisp_Object Qscrollbar_line_down;
+extern Lisp_Object Qscrollbar_page_up;
+extern Lisp_Object Qscrollbar_page_down;
+extern Lisp_Object Qscrollbar_to_top;
+extern Lisp_Object Qscrollbar_to_bottom;
+extern Lisp_Object Qscrollbar_vertical_drag;
+
+extern Lisp_Object Qscrollbar_char_left;
+extern Lisp_Object Qscrollbar_char_right;
+extern Lisp_Object Qscrollbar_page_left;
+extern Lisp_Object Qscrollbar_page_right;
+extern Lisp_Object Qscrollbar_to_left;
+extern Lisp_Object Qscrollbar_to_right;
+extern Lisp_Object Qscrollbar_horizontal_drag;
+
+#endif /* HAVE_SCROLLBARS */
+
+#endif /* _XEMACS_SCROLLBAR_H_ */