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diff --git a/src/st_lib.h b/src/st_lib.h
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+/* Emacs style mode select   -*- C++ -*-
+ *-----------------------------------------------------------------------------
+ *
+ *
+ *  PrBoom: a Doom port merged with LxDoom and LSDLDoom
+ *  based on BOOM, a modified and improved DOOM engine
+ *  Copyright (C) 1999 by
+ *  id Software, Chi Hoang, Lee Killough, Jim Flynn, Rand Phares, Ty Halderman
+ *  Copyright (C) 1999-2000 by
+ *  Jess Haas, Nicolas Kalkhof, Colin Phipps, Florian Schulze
+ *  Copyright 2005, 2006 by
+ *  Florian Schulze, Colin Phipps, Neil Stevens, Andrey Budko
+ *
+ *  This program 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
+ *  of the License, or (at your option) any later version.
+ *
+ *  This program 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 this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ *  02111-1307, USA.
+ *
+ * DESCRIPTION:
+ *  The status bar widget definitions and prototypes
+ *
+ *-----------------------------------------------------------------------------*/
+
+#ifndef __STLIB__
+#define __STLIB__
+
+// We are referring to patches.
+#include "r_defs.h"
+#include "v_video.h"  // color ranges
+
+//
+// Background and foreground screen numbers
+//
+#define BG 4
+#define FG 0
+
+//
+// Typedefs of widgets
+//
+
+// Number widget
+
+typedef struct
+{
+  // upper right-hand corner
+  //  of the number (right-justified)
+  int   x;
+  int   y;
+
+  // max # of digits in number
+  int width;
+
+  // last number value
+  int   oldnum;
+
+  // pointer to current value
+  int*  num;
+
+  // pointer to boolean stating
+  //  whether to update number
+  boolean*  on;
+
+  // list of patches for 0-9
+  const patchnum_t* p;
+
+  // user data
+  int data;
+} st_number_t;
+
+// Percent widget ("child" of number widget,
+//  or, more precisely, contains a number widget.)
+typedef struct
+{
+  // number information
+  st_number_t   n;
+
+  // percent sign graphic
+  const patchnum_t*    p;
+} st_percent_t;
+
+// Multiple Icon widget
+typedef struct
+{
+  // center-justified location of icons
+  int     x;
+  int     y;
+
+  // last icon number
+  int     oldinum;
+
+  // pointer to current icon
+  int*    inum;
+
+  // pointer to boolean stating
+  //  whether to update icon
+  boolean*    on;
+
+  // list of icons
+  const patchnum_t*   p;
+
+  // user data
+  int     data;
+
+} st_multicon_t;
+
+// Binary Icon widget
+
+typedef struct
+{
+  // center-justified location of icon
+  int     x;
+  int     y;
+
+  // last icon value
+  boolean oldval;
+
+  // pointer to current icon status
+  boolean*    val;
+
+  // pointer to boolean
+  //  stating whether to update icon
+  boolean*    on;
+
+  const patchnum_t*    p;  // icon
+  int     data;   // user data
+} st_binicon_t;
+
+//
+// Widget creation, access, and update routines
+//
+
+// Initializes widget library.
+// More precisely, initialize STMINUS,
+//  everything else is done somewhere else.
+//
+void STlib_init(void);
+
+// Number widget routines
+void STlib_initNum
+( st_number_t* n,
+  int x,
+  int y,
+  const patchnum_t* pl,
+  int* num,
+  boolean* on,
+  int width );
+
+void STlib_updateNum
+( st_number_t* n,
+  int cm,
+  boolean refresh );
+
+
+// Percent widget routines
+void STlib_initPercent
+( st_percent_t* p,
+  int x,
+  int y,
+  const patchnum_t* pl,
+  int* num,
+  boolean* on,
+  const patchnum_t* percent );
+
+
+void STlib_updatePercent
+( st_percent_t* per,
+  int cm,
+  int refresh );
+
+
+// Multiple Icon widget routines
+void STlib_initMultIcon
+( st_multicon_t* mi,
+  int x,
+  int y,
+  const patchnum_t*   il,
+  int* inum,
+  boolean* on );
+
+
+void STlib_updateMultIcon
+( st_multicon_t* mi,
+  boolean refresh );
+
+// Binary Icon widget routines
+
+void STlib_initBinIcon
+( st_binicon_t* b,
+  int x,
+  int y,
+  const patchnum_t* i,
+  boolean* val,
+  boolean* on );
+
+void STlib_updateBinIcon
+( st_binicon_t* bi,
+  boolean refresh );
+
+#endif