w32fns.c 218 KB
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/* Graphical user interface functions for the Microsoft W32 API.
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   Copyright (C) 1989, 92, 93, 94, 95, 1996 Free Software Foundation, Inc.
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This file is part of GNU Emacs.

GNU Emacs 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.

GNU Emacs 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 GNU Emacs; see the file COPYING.  If not, write to
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the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.  */
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/* Added by Kevin Gallo */

#include <config.h>
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#include <signal.h>
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#include <stdio.h>
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#include <limits.h>
#include <errno.h>
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#include "lisp.h"
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#include "charset.h"
#include "fontset.h"
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#include "w32term.h"
#include "frame.h"
#include "window.h"
#include "buffer.h"
#include "dispextern.h"
#include "keyboard.h"
#include "blockinput.h"
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#include "epaths.h"
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#include "w32heap.h"
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#include "termhooks.h"
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#include "coding.h"
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#include <commdlg.h>
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#include <shellapi.h>
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extern void abort ();
extern void free_frame_menubar ();
extern struct scroll_bar *x_window_to_scroll_bar ();
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extern int w32_console_toggle_lock_key (int vk_code, Lisp_Object new_state);
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extern int quit_char;
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extern char *lispy_function_keys[];

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/* The colormap for converting color names to RGB values */
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Lisp_Object Vw32_color_map;
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/* Non nil if alt key presses are passed on to Windows.  */
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Lisp_Object Vw32_pass_alt_to_system;
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/* Non nil if alt key is translated to meta_modifier, nil if it is translated
   to alt_modifier.  */
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Lisp_Object Vw32_alt_is_meta;
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/* If non-zero, the windows virtual key code for an alternative quit key. */
Lisp_Object Vw32_quit_key;

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/* Non nil if left window key events are passed on to Windows (this only
   affects whether "tapping" the key opens the Start menu).  */
Lisp_Object Vw32_pass_lwindow_to_system;

/* Non nil if right window key events are passed on to Windows (this
   only affects whether "tapping" the key opens the Start menu).  */
Lisp_Object Vw32_pass_rwindow_to_system;

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/* Virtual key code used to generate "phantom" key presses in order
   to stop system from acting on Windows key events.  */
Lisp_Object Vw32_phantom_key_code;

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/* Modifier associated with the left "Windows" key, or nil to act as a
   normal key.  */
Lisp_Object Vw32_lwindow_modifier;

/* Modifier associated with the right "Windows" key, or nil to act as a
   normal key.  */
Lisp_Object Vw32_rwindow_modifier;

/* Modifier associated with the "Apps" key, or nil to act as a normal
   key.  */
Lisp_Object Vw32_apps_modifier;

/* Value is nil if Num Lock acts as a function key.  */
Lisp_Object Vw32_enable_num_lock;

/* Value is nil if Caps Lock acts as a function key.  */
Lisp_Object Vw32_enable_caps_lock;

/* Modifier associated with Scroll Lock, or nil to act as a normal key.  */
Lisp_Object Vw32_scroll_lock_modifier;
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/* Switch to control whether we inhibit requests for italicised fonts (which
   are synthesized, look ugly, and are trashed by cursor movement under NT). */
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Lisp_Object Vw32_enable_italics;
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/* Enable palette management. */
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Lisp_Object Vw32_enable_palette;
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/* Control how close left/right button down events must be to
   be converted to a middle button down event. */
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Lisp_Object Vw32_mouse_button_tolerance;
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/* Minimum interval between mouse movement (and scroll bar drag)
   events that are passed on to the event loop. */
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Lisp_Object Vw32_mouse_move_interval;
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/* The name we're using in resource queries.  */
Lisp_Object Vx_resource_name;

/* Non nil if no window manager is in use.  */
Lisp_Object Vx_no_window_manager;

/* The background and shape of the mouse pointer, and shape when not
   over text or in the modeline.  */
Lisp_Object Vx_pointer_shape, Vx_nontext_pointer_shape, Vx_mode_pointer_shape;
/* The shape when over mouse-sensitive text.  */
Lisp_Object Vx_sensitive_text_pointer_shape;

/* Color of chars displayed in cursor box.  */
Lisp_Object Vx_cursor_fore_pixel;

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/* Nonzero if using Windows.  */
static int w32_in_use;

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/* Search path for bitmap files.  */
Lisp_Object Vx_bitmap_file_path;

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/* Regexp matching a font name whose width is the same as `PIXEL_SIZE'.  */
Lisp_Object Vx_pixel_size_width_font_regexp;

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/* Alist of bdf fonts and the files that define them.  */
Lisp_Object Vw32_bdf_filename_alist;

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/* A flag to control how to display unibyte 8-bit character.  */
int unibyte_display_via_language_environment;

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int w32_strict_fontnames;

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/* Evaluate this expression to rebuild the section of syms_of_w32fns
   that initializes and staticpros the symbols declared below.  Note
   that Emacs 18 has a bug that keeps C-x C-e from being able to
   evaluate this expression.

(progn
  ;; Accumulate a list of the symbols we want to initialize from the
  ;; declarations at the top of the file.
  (goto-char (point-min))
  (search-forward "/\*&&& symbols declared here &&&*\/\n")
  (let (symbol-list)
    (while (looking-at "Lisp_Object \\(Q[a-z_]+\\)")
      (setq symbol-list
	    (cons (buffer-substring (match-beginning 1) (match-end 1))
		  symbol-list))
      (forward-line 1))
    (setq symbol-list (nreverse symbol-list))
    ;; Delete the section of syms_of_... where we initialize the symbols.
    (search-forward "\n  /\*&&& init symbols here &&&*\/\n")
    (let ((start (point)))
      (while (looking-at "^  Q")
	(forward-line 2))
      (kill-region start (point)))
    ;; Write a new symbol initialization section.
    (while symbol-list
      (insert (format "  %s = intern (\"" (car symbol-list)))
      (let ((start (point)))
	(insert (substring (car symbol-list) 1))
	(subst-char-in-region start (point) ?_ ?-))
      (insert (format "\");\n  staticpro (&%s);\n" (car symbol-list)))
      (setq symbol-list (cdr symbol-list)))))

  */        

/*&&& symbols declared here &&&*/
Lisp_Object Qauto_raise;
Lisp_Object Qauto_lower;
Lisp_Object Qbackground_color;
Lisp_Object Qbar;
Lisp_Object Qborder_color;
Lisp_Object Qborder_width;
Lisp_Object Qbox;
Lisp_Object Qcursor_color;
Lisp_Object Qcursor_type;
Lisp_Object Qforeground_color;
Lisp_Object Qgeometry;
Lisp_Object Qicon_left;
Lisp_Object Qicon_top;
Lisp_Object Qicon_type;
Lisp_Object Qicon_name;
Lisp_Object Qinternal_border_width;
Lisp_Object Qleft;
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Lisp_Object Qright;
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Lisp_Object Qmouse_color;
Lisp_Object Qnone;
Lisp_Object Qparent_id;
Lisp_Object Qscroll_bar_width;
Lisp_Object Qsuppress_icon;
Lisp_Object Qtop;
Lisp_Object Qundefined_color;
Lisp_Object Qvertical_scroll_bars;
Lisp_Object Qvisibility;
Lisp_Object Qwindow_id;
Lisp_Object Qx_frame_parameter;
Lisp_Object Qx_resource_name;
Lisp_Object Quser_position;
Lisp_Object Quser_size;
Lisp_Object Qdisplay;

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Lisp_Object Qhyper;
Lisp_Object Qsuper;
Lisp_Object Qmeta;
Lisp_Object Qalt;
Lisp_Object Qctrl;
Lisp_Object Qcontrol;
Lisp_Object Qshift;

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/* State variables for emulating a three button mouse. */
#define LMOUSE 1
#define MMOUSE 2
#define RMOUSE 4

static int button_state = 0;
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static W32Msg saved_mouse_button_msg;
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static unsigned mouse_button_timer;	/* non-zero when timer is active */
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static W32Msg saved_mouse_move_msg;
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static unsigned mouse_move_timer;

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/* W95 mousewheel handler */
unsigned int msh_mousewheel = 0;	

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#define MOUSE_BUTTON_ID	1
#define MOUSE_MOVE_ID	2
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/* The below are defined in frame.c.  */
extern Lisp_Object Qheight, Qminibuffer, Qname, Qonly, Qwidth;
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extern Lisp_Object Qunsplittable, Qmenu_bar_lines, Qbuffer_predicate, Qtitle;
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extern Lisp_Object Vwindow_system_version;

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Lisp_Object Qface_set_after_frame_default;

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extern Lisp_Object last_mouse_scroll_bar;
extern int last_mouse_scroll_bar_pos;
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/* From w32term.c. */
extern Lisp_Object Vw32_num_mouse_buttons;
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extern Lisp_Object Vw32_recognize_altgr;
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258

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/* Error if we are not connected to MS-Windows.  */
void
check_w32 ()
{
  if (! w32_in_use)
    error ("MS-Windows not in use or not initialized");
}

/* Nonzero if we can use mouse menus.
   You should not call this unless HAVE_MENUS is defined.  */
  
int
have_menus_p ()
{
  return w32_in_use;
}

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/* Extract a frame as a FRAME_PTR, defaulting to the selected frame
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   and checking validity for W32.  */
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FRAME_PTR
check_x_frame (frame)
     Lisp_Object frame;
{
  FRAME_PTR f;

  if (NILP (frame))
    f = selected_frame;
  else
    {
      CHECK_LIVE_FRAME (frame, 0);
      f = XFRAME (frame);
    }
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  if (! FRAME_W32_P (f))
    error ("non-w32 frame used");
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  return f;
}

/* Let the user specify an display with a frame.
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   nil stands for the selected frame--or, if that is not a w32 frame,
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   the first display on the list.  */

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static struct w32_display_info *
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check_x_display_info (frame)
     Lisp_Object frame;
{
  if (NILP (frame))
    {
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      if (FRAME_W32_P (selected_frame))
	return FRAME_W32_DISPLAY_INFO (selected_frame);
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      else
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	return &one_w32_display_info;
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    }
  else if (STRINGP (frame))
    return x_display_info_for_name (frame);
  else
    {
      FRAME_PTR f;

      CHECK_LIVE_FRAME (frame, 0);
      f = XFRAME (frame);
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      if (! FRAME_W32_P (f))
	error ("non-w32 frame used");
      return FRAME_W32_DISPLAY_INFO (f);
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    }
}

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/* Return the Emacs frame-object corresponding to an w32 window.
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   It could be the frame's main window or an icon window.  */

/* This function can be called during GC, so use GC_xxx type test macros.  */

struct frame *
x_window_to_frame (dpyinfo, wdesc)
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     struct w32_display_info *dpyinfo;
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     HWND wdesc;
{
  Lisp_Object tail, frame;
  struct frame *f;

  for (tail = Vframe_list; GC_CONSP (tail); tail = XCONS (tail)->cdr)
    {
      frame = XCONS (tail)->car;
      if (!GC_FRAMEP (frame))
        continue;
      f = XFRAME (frame);
      if (f->output_data.nothing == 1 
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	  || FRAME_W32_DISPLAY_INFO (f) != dpyinfo)
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	continue;
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      if (FRAME_W32_WINDOW (f) == wdesc)
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        return f;
    }
  return 0;
}



/* Code to deal with bitmaps.  Bitmaps are referenced by their bitmap
   id, which is just an int that this section returns.  Bitmaps are
   reference counted so they can be shared among frames.

   Bitmap indices are guaranteed to be > 0, so a negative number can
   be used to indicate no bitmap.

   If you use x_create_bitmap_from_data, then you must keep track of
   the bitmaps yourself.  That is, creating a bitmap from the same
   data more than once will not be caught.  */


/* Functions to access the contents of a bitmap, given an id.  */

int
x_bitmap_height (f, id)
     FRAME_PTR f;
     int id;
{
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  return FRAME_W32_DISPLAY_INFO (f)->bitmaps[id - 1].height;
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}

int
x_bitmap_width (f, id)
     FRAME_PTR f;
     int id;
{
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  return FRAME_W32_DISPLAY_INFO (f)->bitmaps[id - 1].width;
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}

int
x_bitmap_pixmap (f, id)
     FRAME_PTR f;
     int id;
{
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  return (int) FRAME_W32_DISPLAY_INFO (f)->bitmaps[id - 1].pixmap;
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}


/* Allocate a new bitmap record.  Returns index of new record.  */

static int
x_allocate_bitmap_record (f)
     FRAME_PTR f;
{
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  struct w32_display_info *dpyinfo = FRAME_W32_DISPLAY_INFO (f);
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  int i;

  if (dpyinfo->bitmaps == NULL)
    {
      dpyinfo->bitmaps_size = 10;
      dpyinfo->bitmaps
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	= (struct w32_bitmap_record *) xmalloc (dpyinfo->bitmaps_size * sizeof (struct w32_bitmap_record));
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      dpyinfo->bitmaps_last = 1;
      return 1;
    }

  if (dpyinfo->bitmaps_last < dpyinfo->bitmaps_size)
    return ++dpyinfo->bitmaps_last;

  for (i = 0; i < dpyinfo->bitmaps_size; ++i)
    if (dpyinfo->bitmaps[i].refcount == 0)
      return i + 1;

  dpyinfo->bitmaps_size *= 2;
  dpyinfo->bitmaps
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    = (struct w32_bitmap_record *) xrealloc (dpyinfo->bitmaps,
					   dpyinfo->bitmaps_size * sizeof (struct w32_bitmap_record));
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  return ++dpyinfo->bitmaps_last;
}

/* Add one reference to the reference count of the bitmap with id ID.  */

void
x_reference_bitmap (f, id)
     FRAME_PTR f;
     int id;
{
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  ++FRAME_W32_DISPLAY_INFO (f)->bitmaps[id - 1].refcount;
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}

/* Create a bitmap for frame F from a HEIGHT x WIDTH array of bits at BITS.  */

int
x_create_bitmap_from_data (f, bits, width, height)
     struct frame *f;
     char *bits;
     unsigned int width, height;
{
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  struct w32_display_info *dpyinfo = FRAME_W32_DISPLAY_INFO (f);
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  Pixmap bitmap;
  int id;

  bitmap = CreateBitmap (width, height,
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			 FRAME_W32_DISPLAY_INFO (XFRAME (frame))->n_planes,
			 FRAME_W32_DISPLAY_INFO (XFRAME (frame))->n_cbits,
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			 bits);

  if (! bitmap)
    return -1;

  id = x_allocate_bitmap_record (f);
  dpyinfo->bitmaps[id - 1].pixmap = bitmap;
  dpyinfo->bitmaps[id - 1].file = NULL;
  dpyinfo->bitmaps[id - 1].hinst = NULL;
  dpyinfo->bitmaps[id - 1].refcount = 1;
  dpyinfo->bitmaps[id - 1].depth = 1;
  dpyinfo->bitmaps[id - 1].height = height;
  dpyinfo->bitmaps[id - 1].width = width;

  return id;
}

/* Create bitmap from file FILE for frame F.  */

int
x_create_bitmap_from_file (f, file)
     struct frame *f;
     Lisp_Object file;
{
  return -1;
#if 0
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  struct w32_display_info *dpyinfo = FRAME_W32_DISPLAY_INFO (f);
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  unsigned int width, height;
  Pixmap bitmap;
  int xhot, yhot, result, id;
  Lisp_Object found;
  int fd;
  char *filename;
  HINSTANCE hinst;

  /* Look for an existing bitmap with the same name.  */
  for (id = 0; id < dpyinfo->bitmaps_last; ++id)
    {
      if (dpyinfo->bitmaps[id].refcount
	  && dpyinfo->bitmaps[id].file
	  && !strcmp (dpyinfo->bitmaps[id].file, (char *) XSTRING (file)->data))
	{
	  ++dpyinfo->bitmaps[id].refcount;
	  return id + 1;
	}
    }

  /* Search bitmap-file-path for the file, if appropriate.  */
  fd = openp (Vx_bitmap_file_path, file, "", &found, 0);
  if (fd < 0)
    return -1;
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  /* LoadLibraryEx won't handle special files handled by Emacs handler.  */
  if (fd == 0)
    return -1;
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  close (fd);

  filename = (char *) XSTRING (found)->data;

  hinst = LoadLibraryEx (filename, NULL, LOAD_LIBRARY_AS_DATAFILE);

  if (hinst == NULL)
      return -1;

  
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  result = XReadBitmapFile (FRAME_W32_DISPLAY (f), FRAME_W32_WINDOW (f),
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			    filename, &width, &height, &bitmap, &xhot, &yhot);
  if (result != BitmapSuccess)
    return -1;

  id = x_allocate_bitmap_record (f);
  dpyinfo->bitmaps[id - 1].pixmap = bitmap;
  dpyinfo->bitmaps[id - 1].refcount = 1;
  dpyinfo->bitmaps[id - 1].file = (char *) xmalloc (XSTRING (file)->size + 1);
  dpyinfo->bitmaps[id - 1].depth = 1;
  dpyinfo->bitmaps[id - 1].height = height;
  dpyinfo->bitmaps[id - 1].width = width;
  strcpy (dpyinfo->bitmaps[id - 1].file, XSTRING (file)->data);

  return id;
#endif
}

/* Remove reference to bitmap with id number ID.  */

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void
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x_destroy_bitmap (f, id)
     FRAME_PTR f;
     int id;
{
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  struct w32_display_info *dpyinfo = FRAME_W32_DISPLAY_INFO (f);
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  if (id > 0)
    {
      --dpyinfo->bitmaps[id - 1].refcount;
      if (dpyinfo->bitmaps[id - 1].refcount == 0)
	{
	  BLOCK_INPUT;
	  DeleteObject (dpyinfo->bitmaps[id - 1].pixmap);
	  if (dpyinfo->bitmaps[id - 1].file)
	    {
	      free (dpyinfo->bitmaps[id - 1].file);
	      dpyinfo->bitmaps[id - 1].file = NULL;
	    }
	  UNBLOCK_INPUT;
	}
    }
}

/* Free all the bitmaps for the display specified by DPYINFO.  */

static void
x_destroy_all_bitmaps (dpyinfo)
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     struct w32_display_info *dpyinfo;
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{
  int i;
  for (i = 0; i < dpyinfo->bitmaps_last; i++)
    if (dpyinfo->bitmaps[i].refcount > 0)
      {
	DeleteObject (dpyinfo->bitmaps[i].pixmap);
	if (dpyinfo->bitmaps[i].file)
	  free (dpyinfo->bitmaps[i].file);
      }
  dpyinfo->bitmaps_last = 0;
}

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/* Connect the frame-parameter names for W32 frames
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   to the ways of passing the parameter values to the window system.

   The name of a parameter, as a Lisp symbol,
   has an `x-frame-parameter' property which is an integer in Lisp
   but can be interpreted as an `enum x_frame_parm' in C.  */

enum x_frame_parm
{
  X_PARM_FOREGROUND_COLOR,
  X_PARM_BACKGROUND_COLOR,
  X_PARM_MOUSE_COLOR,
  X_PARM_CURSOR_COLOR,
  X_PARM_BORDER_COLOR,
  X_PARM_ICON_TYPE,
  X_PARM_FONT,
  X_PARM_BORDER_WIDTH,
  X_PARM_INTERNAL_BORDER_WIDTH,
  X_PARM_NAME,
  X_PARM_AUTORAISE,
  X_PARM_AUTOLOWER,
  X_PARM_VERT_SCROLL_BAR,
  X_PARM_VISIBILITY,
  X_PARM_MENU_BAR_LINES
};


struct x_frame_parm_table
{
  char *name;
  void (*setter)( /* struct frame *frame, Lisp_Object val, oldval */ );
};

void x_set_foreground_color ();
void x_set_background_color ();
void x_set_mouse_color ();
void x_set_cursor_color ();
void x_set_border_color ();
void x_set_cursor_type ();
void x_set_icon_type ();
void x_set_icon_name ();
void x_set_font ();
void x_set_border_width ();
void x_set_internal_border_width ();
void x_explicitly_set_name ();
void x_set_autoraise ();
void x_set_autolower ();
void x_set_vertical_scroll_bars ();
void x_set_visibility ();
void x_set_menu_bar_lines ();
void x_set_scroll_bar_width ();
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void x_set_title ();
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void x_set_unsplittable ();

static struct x_frame_parm_table x_frame_parms[] =
{
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  "auto-raise", x_set_autoraise,
  "auto-lower", x_set_autolower,
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  "background-color", x_set_background_color,
  "border-color", x_set_border_color,
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  "border-width", x_set_border_width,
  "cursor-color", x_set_cursor_color,
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  "cursor-type", x_set_cursor_type,
  "font", x_set_font,
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  "foreground-color", x_set_foreground_color,
  "icon-name", x_set_icon_name,
  "icon-type", x_set_icon_type,
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  "internal-border-width", x_set_internal_border_width,
  "menu-bar-lines", x_set_menu_bar_lines,
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  "mouse-color", x_set_mouse_color,
  "name", x_explicitly_set_name,
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  "scroll-bar-width", x_set_scroll_bar_width,
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  "title", x_set_title,
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  "unsplittable", x_set_unsplittable,
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  "vertical-scroll-bars", x_set_vertical_scroll_bars,
  "visibility", x_set_visibility,
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};

/* Attach the `x-frame-parameter' properties to
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   the Lisp symbol names of parameters relevant to W32.  */
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init_x_parm_symbols ()
{
  int i;

  for (i = 0; i < sizeof (x_frame_parms) / sizeof (x_frame_parms[0]); i++)
    Fput (intern (x_frame_parms[i].name), Qx_frame_parameter,
	  make_number (i));
}

/* Change the parameters of FRAME as specified by ALIST.
   If a parameter is not specially recognized, do nothing;
   otherwise call the `x_set_...' function for that parameter.  */

void
x_set_frame_parameters (f, alist)
     FRAME_PTR f;
     Lisp_Object alist;
{
  Lisp_Object tail;

  /* If both of these parameters are present, it's more efficient to
     set them both at once.  So we wait until we've looked at the
     entire list before we set them.  */
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  int width, height;
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  /* Same here.  */
  Lisp_Object left, top;

  /* Same with these.  */
  Lisp_Object icon_left, icon_top;

  /* Record in these vectors all the parms specified.  */
  Lisp_Object *parms;
  Lisp_Object *values;
  int i;
  int left_no_change = 0, top_no_change = 0;
  int icon_left_no_change = 0, icon_top_no_change = 0;

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  struct gcpro gcpro1, gcpro2;

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  i = 0;
  for (tail = alist; CONSP (tail); tail = Fcdr (tail))
    i++;

  parms = (Lisp_Object *) alloca (i * sizeof (Lisp_Object));
  values = (Lisp_Object *) alloca (i * sizeof (Lisp_Object));

  /* Extract parm names and values into those vectors.  */

  i = 0;
  for (tail = alist; CONSP (tail); tail = Fcdr (tail))
    {
      Lisp_Object elt, prop, val;

      elt = Fcar (tail);
      parms[i] = Fcar (elt);
      values[i] = Fcdr (elt);
      i++;
    }

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  /* TAIL and ALIST are not used again below here.  */
  alist = tail = Qnil;

  GCPRO2 (*parms, *values);
  gcpro1.nvars = i;
  gcpro2.nvars = i;

  /* There is no need to gcpro LEFT, TOP, ICON_LEFT, or ICON_TOP,
     because their values appear in VALUES and strings are not valid.  */
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  top = left = Qunbound;
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  icon_left = icon_top = Qunbound;

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  /* Provide default values for HEIGHT and WIDTH.  */
  width = FRAME_WIDTH (f);
  height = FRAME_HEIGHT (f);

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  /* Now process them in reverse of specified order.  */
  for (i--; i >= 0; i--)
    {
      Lisp_Object prop, val;

      prop = parms[i];
      val = values[i];

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      if (EQ (prop, Qwidth) && NUMBERP (val))
	width = XFASTINT (val);
      else if (EQ (prop, Qheight) && NUMBERP (val))
	height = XFASTINT (val);
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      else if (EQ (prop, Qtop))
	top = val;
      else if (EQ (prop, Qleft))
	left = val;
      else if (EQ (prop, Qicon_top))
	icon_top = val;
      else if (EQ (prop, Qicon_left))
	icon_left = val;
      else
	{
	  register Lisp_Object param_index, old_value;

	  param_index = Fget (prop, Qx_frame_parameter);
	  old_value = get_frame_param (f, prop);
	  store_frame_param (f, prop, val);
 	  if (NATNUMP (param_index)
	      && (XFASTINT (param_index)
		  < sizeof (x_frame_parms)/sizeof (x_frame_parms[0])))
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	    (*x_frame_parms[XINT (param_index)].setter)(f, val, old_value);
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	}
    }

  /* Don't die if just one of these was set.  */
  if (EQ (left, Qunbound))
    {
      left_no_change = 1;
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      if (f->output_data.w32->left_pos < 0)
	left = Fcons (Qplus, Fcons (make_number (f->output_data.w32->left_pos), Qnil));
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      else
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	XSETINT (left, f->output_data.w32->left_pos);
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    }
  if (EQ (top, Qunbound))
    {
      top_no_change = 1;
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      if (f->output_data.w32->top_pos < 0)
	top = Fcons (Qplus, Fcons (make_number (f->output_data.w32->top_pos), Qnil));
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      else
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	XSETINT (top, f->output_data.w32->top_pos);
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    }

  /* If one of the icon positions was not set, preserve or default it.  */
  if (EQ (icon_left, Qunbound) || ! INTEGERP (icon_left))
    {
      icon_left_no_change = 1;
      icon_left = Fcdr (Fassq (Qicon_left, f->param_alist));
      if (NILP (icon_left))
	XSETINT (icon_left, 0);
    }
  if (EQ (icon_top, Qunbound) || ! INTEGERP (icon_top))
    {
      icon_top_no_change = 1;
      icon_top = Fcdr (Fassq (Qicon_top, f->param_alist));
      if (NILP (icon_top))
	XSETINT (icon_top, 0);
    }

  /* Don't set these parameters unless they've been explicitly
     specified.  The window might be mapped or resized while we're in
     this function, and we don't want to override that unless the lisp
     code has asked for it.

     Don't set these parameters unless they actually differ from the
     window's current parameters; the window may not actually exist
     yet.  */
  {
    Lisp_Object frame;

    check_frame_size (f, &height, &width);

    XSETFRAME (frame, f);

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    if (XINT (width) != FRAME_WIDTH (f)
	|| XINT (height) != FRAME_HEIGHT (f))
      Fset_frame_size (frame, make_number (width), make_number (height));
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    if ((!NILP (left) || !NILP (top))
	&& ! (left_no_change && top_no_change)
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	&& ! (NUMBERP (left) && XINT (left) == f->output_data.w32->left_pos
	      && NUMBERP (top) && XINT (top) == f->output_data.w32->top_pos))
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      {
	int leftpos = 0;
	int toppos = 0;

	/* Record the signs.  */
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	f->output_data.w32->size_hint_flags &= ~ (XNegative | YNegative);
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	if (EQ (left, Qminus))
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	  f->output_data.w32->size_hint_flags |= XNegative;
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	else if (INTEGERP (left))
	  {
	    leftpos = XINT (left);
	    if (leftpos < 0)
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	      f->output_data.w32->size_hint_flags |= XNegative;
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	  }
	else if (CONSP (left) && EQ (XCONS (left)->car, Qminus)
		 && CONSP (XCONS (left)->cdr)
		 && INTEGERP (XCONS (XCONS (left)->cdr)->car))
	  {
	    leftpos = - XINT (XCONS (XCONS (left)->cdr)->car);
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	    f->output_data.w32->size_hint_flags |= XNegative;
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	  }
	else if (CONSP (left) && EQ (XCONS (left)->car, Qplus)
		 && CONSP (XCONS (left)->cdr)
		 && INTEGERP (XCONS (XCONS (left)->cdr)->car))
	  {
	    leftpos = XINT (XCONS (XCONS (left)->cdr)->car);
	  }

	if (EQ (top, Qminus))
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	  f->output_data.w32->size_hint_flags |= YNegative;
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	else if (INTEGERP (top))
	  {
	    toppos = XINT (top);
	    if (toppos < 0)
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	      f->output_data.w32->size_hint_flags |= YNegative;
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	  }
	else if (CONSP (top) && EQ (XCONS (top)->car, Qminus)
		 && CONSP (XCONS (top)->cdr)
		 && INTEGERP (XCONS (XCONS (top)->cdr)->car))
	  {
	    toppos = - XINT (XCONS (XCONS (top)->cdr)->car);
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	    f->output_data.w32->size_hint_flags |= YNegative;
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	  }
	else if (CONSP (top) && EQ (XCONS (top)->car, Qplus)
		 && CONSP (XCONS (top)->cdr)
		 && INTEGERP (XCONS (XCONS (top)->cdr)->car))
	  {
	    toppos = XINT (XCONS (XCONS (top)->cdr)->car);
	  }


	/* Store the numeric value of the position.  */
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	f->output_data.w32->top_pos = toppos;
	f->output_data.w32->left_pos = leftpos;
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	f->output_data.w32->win_gravity = NorthWestGravity;
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	/* Actually set that position, and convert to absolute.  */
	x_set_offset (f, leftpos, toppos, -1);
      }

    if ((!NILP (icon_left) || !NILP (icon_top))
	&& ! (icon_left_no_change && icon_top_no_change))
      x_wm_set_icon_position (f, XINT (icon_left), XINT (icon_top));
  }
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  UNGCPRO;
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}

/* Store the screen positions of frame F into XPTR and YPTR.
   These are the positions of the containing window manager window,
   not Emacs's own window.  */

void
x_real_positions (f, xptr, yptr)
     FRAME_PTR f;
     int *xptr, *yptr;
{
  POINT pt;
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  {
      RECT rect;
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      GetClientRect(FRAME_W32_WINDOW(f), &rect);
      AdjustWindowRect(&rect, f->output_data.w32->dwStyle, FRAME_EXTERNAL_MENU_BAR(f));
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      pt.x = rect.left;
      pt.y = rect.top;
  }
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  ClientToScreen (FRAME_W32_WINDOW(f), &pt);
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  *xptr = pt.x;
  *yptr = pt.y;
}

/* Insert a description of internally-recorded parameters of frame X
   into the parameter alist *ALISTPTR that is to be given to the user.
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   Only parameters that are specific to W32
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   and whose values are not correctly recorded in the frame's
   param_alist need to be considered here.  */

x_report_frame_params (f, alistptr)
     struct frame *f;
     Lisp_Object *alistptr;
{
  char buf[16];
  Lisp_Object tem;

  /* Represent negative positions (off the top or left screen edge)
     in a way that Fmodify_frame_parameters will understand correctly.  */
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  XSETINT (tem, f->output_data.w32->left_pos);
  if (f->output_data.w32->left_pos >= 0)
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    store_in_alist (alistptr, Qleft, tem);
  else
    store_in_alist (alistptr, Qleft, Fcons (Qplus, Fcons (tem, Qnil)));

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  XSETINT (tem, f->output_data.w32->top_pos);
  if (f->output_data.w32->top_pos >= 0)
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    store_in_alist (alistptr, Qtop, tem);
  else
    store_in_alist (alistptr, Qtop, Fcons (Qplus, Fcons (tem, Qnil)));

  store_in_alist (alistptr, Qborder_width,
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       	   make_number (f->output_data.w32->border_width));
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  store_in_alist (alistptr, Qinternal_border_width,
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       	   make_number (f->output_data.w32->internal_border_width));
  sprintf (buf, "%ld", (long) FRAME_W32_WINDOW (f));
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  store_in_alist (alistptr, Qwindow_id,
       	   build_string (buf));
  store_in_alist (alistptr, Qicon_name, f->icon_name);
  FRAME_SAMPLE_VISIBILITY (f);
  store_in_alist (alistptr, Qvisibility,
		  (FRAME_VISIBLE_P (f) ? Qt
		   : FRAME_ICONIFIED_P (f) ? Qicon : Qnil));
  store_in_alist (alistptr, Qdisplay,
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		  XCONS (FRAME_W32_DISPLAY_INFO (f)->name_list_element)->car);
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}


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DEFUN ("w32-define-rgb-color", Fw32_define_rgb_color, Sw32_define_rgb_color, 4, 4, 0,
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  "Convert RGB numbers to a windows color reference and associate with NAME (a string).\n\
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This adds or updates a named color to w32-color-map, making it available for use.\n\
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The original entry's RGB ref is returned, or nil if the entry is new.")
    (red, green, blue, name)
    Lisp_Object red, green, blue, name;
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{
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  Lisp_Object rgb;
  Lisp_Object oldrgb = Qnil;
  Lisp_Object entry;

  CHECK_NUMBER (red, 0);
  CHECK_NUMBER (green, 0);
  CHECK_NUMBER (blue, 0);
  CHECK_STRING (name, 0);
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  XSET (rgb, Lisp_Int, RGB(XUINT (red), XUINT (green), XUINT (blue)));
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  BLOCK_INPUT;
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  /* replace existing entry in w32-color-map or add new entry. */
  entry = Fassoc (name, Vw32_color_map);
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  if (NILP (entry))
    {
      entry = Fcons (name, rgb);
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      Vw32_color_map = Fcons (entry, Vw32_color_map);
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    }
  else
    {
      oldrgb = Fcdr (entry);
      Fsetcdr (entry, rgb);
    }

  UNBLOCK_INPUT;

  return (oldrgb);
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}

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DEFUN ("w32-load-color-file", Fw32_load_color_file, Sw32_load_color_file, 1, 1, 0,
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  "Create an alist of color entries from an external file (ie. rgb.txt).\n\
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Assign this value to w32-color-map to replace the existing color map.\n\
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\
The file should define one named RGB color per line like so:\
  R G B   name\n\
where R,G,B are numbers between 0 and 255 and name is an arbitrary string.")
    (filename)
    Lisp_Object filename;
{
  FILE *fp;
  Lisp_Object cmap = Qnil;
  Lisp_Object abspath;

  CHECK_STRING (filename, 0);
  abspath = Fexpand_file_name (filename, Qnil);

  fp = fopen (XSTRING (filename)->data, "rt");
  if (fp)
    {
      char buf[512];
      int red, green, blue;
      int num;

      BLOCK_INPUT;

      while (fgets (buf, sizeof (buf), fp) != NULL) {
	if (sscanf (buf, "%u %u %u %n", &red, &green, &blue, &num) == 3)
	  {
	    char *name = buf + num;
	    num = strlen (name) - 1;
	    if (name[num] == '\n')
	      name[num] = 0;
	    cmap = Fcons (Fcons (build_string (name),
				 make_number (RGB (red, green, blue))),
			  cmap);
	  }
      }
      fclose (fp);

      UNBLOCK_INPUT;
    }

  return cmap;
}
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/* The default colors for the w32 color map */
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typedef struct colormap_t 
{
  char *name;
  COLORREF colorref;
} colormap_t;

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colormap_t w32_color_map[] = 
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{
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  {"snow"                      , PALETTERGB (255,250,250)},
  {"ghost white"               , PALETTERGB (248,248,255)},
  {"GhostWhite"                , PALETTERGB (248,248,255)},
  {"white smoke"               , PALETTERGB (245,245,245)},
  {"WhiteSmoke"                , PALETTERGB (245,245,245)},
  {"gainsboro"                 , PALETTERGB (220,220,220)},
  {"floral white"              , PALETTERGB (255,250,240)},
  {"FloralWhite"               , PALETTERGB (255,250,240)},
  {"old lace"                  , PALETTERGB (253,245,230)},
  {"OldLace"                   , PALETTERGB (253,245,230)},
  {"linen"                     , PALETTERGB (250,240,230)},
  {"antique white"             , PALETTERGB (250,235,215)},
  {"AntiqueWhite"              , PALETTERGB (250,235,215)},
  {"papaya whip"               , PALETTERGB (255,239,213)},
  {"PapayaWhip"                , PALETTERGB (255,239,213)},
  {"blanched almond"           , PALETTERGB (255,235,205)},
  {"BlanchedAlmond"            , PALETTERGB (255,235,205)},
  {"bisque"                    , PALETTERGB (255,228,196)},
  {"peach puff"                , PALETTERGB (255,218,185)},
  {"PeachPuff"                 , PALETTERGB (255,218,185)},
  {"navajo white"              , PALETTERGB (255,222,173)},
  {"NavajoWhite"               , PALETTERGB (255,222,173)},
  {"moccasin"                  , PALETTERGB (255,228,181)},
  {"cornsilk"                  , PALETTERGB (255,248,220)},
  {"ivory"                     , PALETTERGB (255,255,240)},
  {"lemon chiffon"             , PALETTERGB (255,250,205)},
  {"LemonChiffon"              , PALETTERGB (255,250,205)},
  {"seashell"                  , PALETTERGB (255,245,238)},
  {"honeydew"                  , PALETTERGB (240,255,240)},
  {"mint cream"                , PALETTERGB (245,255,250)},
  {"MintCream"                 , PALETTERGB (245,255,250)},
  {"azure"                     , PALETTERGB (240,255,255)},
  {"alice blue"                , PALETTERGB (240,248,255)},
  {"AliceBlue"                 , PALETTERGB (240,248,255)},
  {"lavender"                  , PALETTERGB (230,230,250)},
  {"lavender blush"            , PALETTERGB (255,240,245)},
  {"LavenderBlush"             , PALETTERGB (255,240,245)},
  {"misty rose"                , PALETTERGB (255,228,225)},
  {"MistyRose"                 , PALETTERGB (255,228,225)},
  {"white"                     , PALETTERGB (255,255,255)},
  {"black"                     , PALETTERGB (  0,  0,  0)},
  {"dark slate gray"           , PALETTERGB ( 47, 79, 79)},
  {"DarkSlateGray"             , PALETTERGB ( 47, 79, 79)},
  {"dark slate grey"           , PALETTERGB ( 47, 79, 79)},
  {"DarkSlateGrey"             , PALETTERGB ( 47, 79, 79)},
  {"dim gray"                  , PALETTERGB (105,105,105)},
  {"DimGray"                   , PALETTERGB (105,105,105)},
  {"dim grey"                  , PALETTERGB (105,105,105)},
  {"DimGrey"                   , PALETTERGB (105,105,105)},
  {"slate gray"                , PALETTERGB (112,128,144)},
  {"SlateGray"                 , PALETTERGB (112,128,144)},
  {"slate grey"                , PALETTERGB (112,128,144)},
  {"SlateGrey"                 , PALETTERGB (112,128,144)},
  {"light slate gray"          , PALETTERGB (119,136,153)},
  {"LightSlateGray"            , PALETTERGB (119,136,153)},
  {"light slate grey"          , PALETTERGB (119,136,153)},
  {"LightSlateGrey"            , PALETTERGB (119,136,153)},
  {"gray"                      , PALETTERGB (190,190,190)},
  {"grey"                      , PALETTERGB (190,190,190)},
  {"light grey"                , PALETTERGB (211,211,211)},
  {"LightGrey"                 , PALETTERGB (211,211,211)},
  {"light gray"                , PALETTERGB (211,211,211)},
  {"LightGray"                 , PALETTERGB (211,211,211)},
  {"midnight blue"             , PALETTERGB ( 25, 25,112)},
  {"MidnightBlue"              , PALETTERGB ( 25, 25,112)},
  {"navy"                      , PALETTERGB (  0,  0,128)},
  {"navy blue"                 , PALETTERGB (  0,  0,128)},
  {"NavyBlue"                  , PALETTERGB (  0,  0,128)},
  {"cornflower blue"           , PALETTERGB (100,149,237)},
  {"CornflowerBlue"            , PALETTERGB (100,149,237)},
  {"dark slate blue"           , PALETTERGB ( 72, 61,139)},
  {"DarkSlateBlue"             , PALETTERGB ( 72, 61,139)},
  {"slate blue"                , PALETTERGB (106, 90,205)},
  {"SlateBlue"                 , PALETTERGB (106, 90,205)},
  {"medium slate blue"         , PALETTERGB (123,104,238)},
  {"MediumSlateBlue"           , PALETTERGB (123,104,238)},
  {"light slate blue"          , PALETTERGB (132,112,255)},
  {"LightSlateBlue"            , PALETTERGB (132,112,255)},
  {"medium blue"               , PALETTERGB (  0,  0,205)},
  {"MediumBlue"                , PALETTERGB (  0,  0,205)},
  {"royal blue"                , PALETTERGB ( 65,105,225)},
  {"RoyalBlue"                 , PALETTERGB ( 65,105,225)},
  {"blue"                      , PALETTERGB (  0,  0,255)},
  {"dodger blue"               , PALETTERGB ( 30,144,255)},
  {"DodgerBlue"                , PALETTERGB ( 30,144,255)},
  {"deep sky blue"             , PALETTERGB (  0,191,255)},
  {"DeepSkyBlue"               , PALETTERGB (  0,191,255)},
  {"sky blue"                  , PALETTERGB (135,206,235)},
  {"SkyBlue"                   , PALETTERGB (135,206,235)},
  {"light sky blue"            , PALETTERGB (135,206,250)},
  {"LightSkyBlue"              , PALETTERGB (135,206,250)},
  {"steel blue"                , PALETTERGB ( 70,130,180)},
  {"SteelBlue"                 , PALETTERGB ( 70,130,180)},
  {"light steel blue"          , PALETTERGB (176,196,222)},
  {"LightSteelBlue"            , PALETTERGB (176,196,222)},
  {"light blue"                , PALETTERGB (173,216,230)},
  {"LightBlue"                 , PALETTERGB (173,216,230)},
  {"powder blue"               , PALETTERGB (176,224,230)},
  {"PowderBlue"                , PALETTERGB (176,224,230)},
  {"pale turquoise"            , PALETTERGB (175,238,238)},
  {"PaleTurquoise"             , PALETTERGB (175,238,238)},
  {"dark turquoise"            , PALETTERGB (  0,206,209)},
  {"DarkTurquoise"             , PALETTERGB (  0,206,209)},
  {"medium turquoise"          , PALETTERGB ( 72,209,204)},
  {"MediumTurquoise"           , PALETTERGB ( 72,209,204)},
  {"turquoise"                 , PALETTERGB ( 64,224,208)},
  {"cyan"                      , PALETTERGB (  0,255,255)},
  {"light cyan"                , PALETTERGB (224,255,255)},
  {"LightCyan"                 , PALETTERGB (224,255,255)},
  {"cadet blue"                , PALETTERGB ( 95,158,160)},
  {"CadetBlue"                 , PALETTERGB ( 95,158,160)},
  {"medium aquamarine"         , PALETTERGB (102,205,170)},
  {"MediumAquamarine"          , PALETTERGB (102,205,170)},
  {"aquamarine"                , PALETTERGB (127,255,212)},
  {"dark green"                , PALETTERGB (  0,100,  0)},
  {"DarkGreen"                 , PALETTERGB (  0,100,  0)},
  {"dark olive green"          , PALETTERGB ( 85,107, 47)},
  {"DarkOliveGreen"            , PALETTERGB ( 85,107, 47)},
  {"dark sea green"            , PALETTERGB (143,188,143)},
  {"DarkSeaGreen"              , PALETTERGB (143,188,143)},
  {"sea green"                 , PALETTERGB ( 46,139, 87)},
  {"SeaGreen"                  , PALETTERGB ( 46,139, 87)},
  {"medium sea green"          , PALETTERGB ( 60,179,113)},
  {"MediumSeaGreen"            , PALETTERGB ( 60,179,113)},
  {"light sea green"           , PALETTERGB ( 32,178,170)},
  {"LightSeaGreen"             , PALETTERGB ( 32,178,170)},
  {"pale green"                , PALETTERGB (152,251,152)},
  {"PaleGreen"                 , PALETTERGB (152,251,152)},
  {"spring green"              , PALETTERGB (  0,255,127)},
  {"SpringGreen"               , PALETTERGB (  0,255,127)},
  {"lawn green"                , PALETTERGB (124,252,  0)},
  {"LawnGreen"                 , PALETTERGB (124,252,  0)},
  {"green"                     , PALETTERGB (  0,255,  0)},
  {"chartreuse"                , PALETTERGB (127,255,  0)},
  {"medium spring green"       , PALETTERGB (  0,250,154)},
  {"MediumSpringGreen"         , PALETTERGB (  0,250,154)},
  {"green yellow"              , PALETTERGB (173,255, 47)},
  {"GreenYellow"               , PALETTERGB (173,255, 47)},
  {"lime green"                , PALETTERGB ( 50,205, 50)},
  {"LimeGreen"                 , PALETTERGB ( 50,205, 50)},
  {"yellow green"              , PALETTERGB (154,205, 50)},
  {"YellowGreen"               , PALETTERGB (154,205, 50)},
  {"forest green"              , PALETTERGB ( 34,139, 34)},
  {"ForestGreen"               , PALETTERGB ( 34,139, 34)},
  {"olive drab"                , PALETTERGB (107,142, 35)},
  {"OliveDrab"                 , PALETTERGB (107,142, 35)},
  {"dark khaki"                , PALETTERGB (189,183,107)},
  {"DarkKhaki"                 , PALETTERGB (189,183,107)},
  {"khaki"                     , PALETTERGB (240,230,140)},
  {"pale goldenrod"            , PALETTERGB (238,232,170)},
  {"PaleGoldenrod"             , PALETTERGB (238,232,170)},
  {"light goldenrod yellow"    , PALETTERGB (250,250,210)},
  {"LightGoldenrodYellow"      , PALETTERGB (250,250,210)},
  {"light yellow"              , PALETTERGB (255,255,224)},
  {"LightYellow"               , PALETTERGB (255,255,224)},
  {"yellow"                    , PALETTERGB (255,255,  0)},
  {"gold"                      , PALETTERGB (255,215,  0)},
  {"light goldenrod"           , PALETTERGB (238,221,130)},
  {"LightGoldenrod"            , PALETTERGB (238,221,130)},
  {"goldenrod"                 , PALETTERGB (218,165, 32)},
  {"dark goldenrod"            , PALETTERGB (184,134, 11)},
  {"DarkGoldenrod"             , PALETTERGB (184,134, 11)},
  {"rosy brown"                , PALETTERGB (188,143,143)},
  {"RosyBrown"                 , PALETTERGB (188,143,143)},
  {"indian red"                , PALETTERGB (205, 92, 92)},
  {"IndianRed"                 , PALETTERGB (205, 92, 92)},
  {"saddle brown"              , PALETTERGB (139, 69, 19)},
  {"SaddleBrown"               , PALETTERGB (139, 69, 19)},
  {"sienna"                    , PALETTERGB (160, 82, 45)},
  {"peru"                      , PALETTERGB (205,133, 63)},
  {"burlywood"                 , PALETTERGB (222,184,135)},
  {"beige"                     , PALETTERGB (245,245,220)},
  {"wheat"                     , PALETTERGB (245,222,179)},
  {"sandy brown"               , PALETTERGB (244,164, 96)},
  {"SandyBrown"                , PALETTERGB (244,164, 96)},
  {"tan"                       , PALETTERGB (210,180,140)},
  {"chocolate"                 , PALETTERGB (210,105, 30)},
  {"firebrick"                 , PALETTERGB (178,34, 34)},
  {"brown"                     , PALETTERGB (165,42, 42)},
  {"dark salmon"               , PALETTERGB (233,150,122)},
  {"DarkSalmon"                , PALETTERGB (233,150,122)},
  {"salmon"                    , PALETTERGB (250,128,114)},
  {"light salmon"              , PALETTERGB (255,160,122)},
  {"LightSalmon"               , PALETTERGB (255,160,122)},
  {"orange"                    , PALETTERGB (255,165,  0)},
  {"dark orange"               , PALETTERGB (255,140,  0)},
  {"DarkOrange"                , PALETTERGB (255,140,  0)},
  {"coral"                     , PALETTERGB (255,127, 80)},
  {"light coral"               , PALETTERGB (240,128,128)},
  {"LightCoral"                , PALETTERGB (240,128,128)},
  {"tomato"                    , PALETTERGB (255, 99, 71)},
  {"orange red"                , PALETTERGB (255, 69,  0)},
  {"OrangeRed"                 , PALETTERGB (255, 69,  0)},
  {"red"                       , PALETTERGB (255,  0,  0)},
  {"hot pink"                  , PALETTERGB (255,105,180)},
  {"HotPink"                   , PALETTERGB (255,105,180)},
  {"deep pink"                 , PALETTERGB (255, 20,147)},
  {"DeepPink"                  , PALETTERGB (255, 20,147)},
  {"pink"                      , PALETTERGB (255,192,203)},
  {"light pink"                , PALETTERGB (255,182,193)},
  {"LightPink"                 , PALETTERGB (255,182,193)},
  {"pale violet red"           , PALETTERGB (219,112,147)},
  {"PaleVioletRed"             , PALETTERGB (219,112,147)},
  {"maroon"                    , PALETTERGB (176, 48, 96)},
  {"medium violet red"         , PALETTERGB (199, 21,133)},
  {"MediumVioletRed"           , PALETTERGB (199, 21,133)},
  {"violet red"                , PALETTERGB (208, 32,144)},
  {"VioletRed"                 , PALETTERGB (208, 32,144)},
  {"magenta"                   , PALETTERGB (255,  0,255)},
  {"violet"                    , PALETTERGB (238,130,238)},
  {"plum"                      , PALETTERGB (221,160,221)},
  {"orchid"                    , PALETTERGB (218,112,214)},
  {"medium orchid"             , PALETTERGB (186, 85,211)},
  {"MediumOrchid"              , PALETTERGB (186, 85,211)},
  {"dark orchid"               , PALETTERGB (153, 50,204)},
  {"DarkOrchid"                , PALETTERGB (153, 50,204)},
  {"dark violet"               , PALETTERGB (148,  0,211)},
  {"DarkViolet"                , PALETTERGB (148,  0,211)},
  {"blue violet"               , PALETTERGB (138, 43,226)},
  {"BlueViolet"                , PALETTERGB (138, 43,226)},
  {"purple"                    , PALETTERGB (160, 32,240)},
  {"medium purple"             , PALETTERGB (147,112,219)},
  {"MediumPurple"              , PALETTERGB (147,112,219)},
  {"thistle"                   , PALETTERGB (216,191,216)},
  {"gray0"                     , PALETTERGB (  0,  0,  0)},
  {"grey0"                     , PALETTERGB (  0,  0,  0)},
  {"dark grey"                 , PALETTERGB (169,169,169)},
  {"DarkGrey"                  , PALETTERGB (169,169,169)},
  {"dark gray"                 , PALETTERGB (169,169,169)},
  {"DarkGray"                  , PALETTERGB (169,169,169)},
  {"dark blue"                 , PALETTERGB (  0,  0,139)},
  {"DarkBlue"                  , PALETTERGB (  0,  0,139)},
  {"dark cyan"                 , PALETTERGB (  0,139,139)},
  {"DarkCyan"                  , PALETTERGB (  0,139,139)},
  {"dark magenta"              , PALETTERGB (139,  0,139)},
  {"DarkMagenta"               , PALETTERGB (139,  0,139)},
  {"dark red"                  , PALETTERGB (139,  0,  0)},
  {"DarkRed"                   , PALETTERGB (139,  0,  0)},
  {"light green"               , PALETTERGB (144,238,144)},
  {"LightGreen"                , PALETTERGB (144,238,144)},
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};

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DEFUN ("w32-default-color-map", Fw32_default_color_map, Sw32_default_color_map,
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       0, 0, 0, "Return the default color map.")
     ()
{
  int i;
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  colormap_t *pc = w32_color_map;
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  Lisp_Object cmap;
  
  BLOCK_INPUT;
  
  cmap = Qnil;
  
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  for (i = 0; i < sizeof (w32_color_map) / sizeof (w32_color_map[0]); 
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       pc++, i++)
    cmap = Fcons (Fcons (build_string (pc->name),
			 make_number (pc->colorref)),
		  cmap);
  
  UNBLOCK_INPUT;
  
  return (cmap);
}

Lisp_Object 
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w32_to_x_color (rgb)
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     Lisp_Object rgb;
{
  Lisp_Object color;
  
  CHECK_NUMBER (rgb, 0);
  
  BLOCK_INPUT;
  
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  color = Frassq (rgb, Vw32_color_map);
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  UNBLOCK_INPUT;
  
  if (!NILP (color))
    return (Fcar (color));
  else
    return Qnil;
}

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COLORREF
w32_color_map_lookup (colorname)
     char *colorname;
{
  Lisp_Object tail, ret = Qnil;

  BLOCK_INPUT;

  for (tail = Vw32_color_map; !NILP (tail); tail = Fcdr (tail))
    {
      register Lisp_Object elt, tem;

      elt = Fcar (tail);
      if (!CONSP (elt)) continue;

      tem = Fcar (elt);

      if (lstrcmpi (XSTRING (tem)->data, colorname) == 0)
	{
	  ret = XUINT (Fcdr (elt));
	  break;
	}

      QUIT;
    }


  UNBLOCK_INPUT;

  return ret;
}

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COLORREF 
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x_to_w32_color (colorname)
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     char * colorname;
{
  register Lisp_Object tail, ret = Qnil;
  
  BLOCK_INPUT;
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  if (colorname[0] == '#')
    {
      /* Could be an old-style RGB Device specification.  */
      char *color;
      int size;
      color = colorname + 1;
      
      size = strlen(color);
      if (size == 3 || size == 6 || size == 9 || size == 12)
	{
	  UINT colorval;
	  int i, pos;
	  pos = 0;
	  size /= 3;
	  colorval = 0;
	  
	  for (i = 0; i < 3; i++)
	    {
	      char *end;
	      char t;
	      unsigned long value;

	      /* The check for 'x' in the following conditional takes into
		 account the fact that strtol allows a "0x" in front of
		 our numbers, and we don't.  */
	      if (!isxdigit(color[0]) || color[1] == 'x')
		break;
	      t = color[size];
	      color[size] = '\0';
	      value = strtoul(color, &end, 16);
	      color[size] = t;
	      if (errno == ERANGE || end - color != size)
		break;
	      switch (size)
		{
		case 1:
		  value = value * 0x10;
		  break;
		case 2:
		  break;
		case 3:
		  value /= 0x10;
		  break;
		case 4:
		  value /= 0x100;
		  break;
		}
	      colorval |= (value << pos);
	      pos += 0x8;
	      if (i == 2)
		{
		  UNBLOCK_INPUT;
		  return (colorval);
		}
	      color = end;
	    }
	}
    }
  else if (strnicmp(colorname, "rgb:", 4) == 0)
    {
      char *color;
      UINT colorval;
      int i, pos;
      pos = 0;

      colorval = 0;
      color = colorname + 4;
      for (i = 0; i < 3; i++)
	{
	  char *end;
	  unsigned long value;
	  
	  /* The check for 'x' in the following conditional takes into
	     account the fact that strtol allows a "0x" in front of
	     our numbers, and we don't.  */
	  if (!isxdigit(color[0]) || color[1] == 'x')
	    break;
	  value = strtoul(color, &end, 16);
	  if (errno == ERANGE)
	    break;
	  switch (end - color)
	    {
	    case 1:
	      value = value * 0x10 + value;
	      break;
	    case 2:
	      break;
	    case 3:
	      value /= 0x10;
	      break;
	    case 4:
	      value /= 0x100;
	      break;
	    default:
	      value = ULONG_MAX;
	    }
	  if (value == ULONG_MAX)
	    break;
	  colorval |= (value << pos);
	  pos += 0x8;
	  if (i == 2)
	    {
	      if (*end != '\0')
		break;
	      UNBLOCK_INPUT;
	      return (colorval);
	    }
	  if (*end != '/')
	    break;
	  color = end + 1;
	}
    }
  else if (strnicmp(colorname, "rgbi:", 5) == 0)
    {
      /* This is an RGB Intensity specification.  */
      char *color;
      UINT colorval;
      int i, pos;
      pos = 0;

      colorval = 0;
      color = colorname + 5;
      for (i = 0; i < 3; i++)
	{
	  char *end;
	  double value;
	  UINT val;

	  value = strtod(color, &end);
	  if (errno == ERANGE)
	    break;
	  if (value < 0.0 || value > 1.0)
	    break;
	  val = (UINT)(0x100 * value);
	  /* We used 0x100 instead of 0xFF to give an continuous
             range between 0.0 and 1.0 inclusive.  The next statement
             fixes the 1.0 case.  */
	  if (val == 0x100)
	    val = 0xFF;
	  colorval |= (val << pos);
	  pos += 0x8;
	  if (i == 2)
	    {
	      if (*end != '\0')
		break;
	      UNBLOCK_INPUT;
	      return (colorval);
	    }
	  if (*end != '/')
	    break;
	  color = end + 1;
	}
    }
  /* I am not going to attempt to handle any of the CIE color schemes
     or TekHVC, since I don't know the algorithms for conversion to
     RGB.  */
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  /* If we fail to lookup the color name in w32_color_map, then check the
     colorname to see if it can be crudely approximated: If the X color 
     ends in a number (e.g., "darkseagreen2"), strip the number and
     return the result of looking up the base color name.  */
  ret = w32_color_map_lookup (colorname);
  if (NILP (ret)) 
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    {
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      int len = strlen (colorname);
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      if (isdigit (colorname[len - 1])) 
	{
	  char *ptr, *approx = alloca (len);
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	  strcpy (approx, colorname);
	  ptr = &approx[len - 1];
	  while (ptr > approx && isdigit (*ptr)) 
	      *ptr-- = '\0';
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	  ret = w32_color_map_lookup (approx);
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	}
    }
  
  UNBLOCK_INPUT;
  return ret;
}

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void
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w32_regenerate_palette (FRAME_PTR f)
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{
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  struct w32_palette_entry * list;
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  LOGPALETTE *          log_palette;
  HPALETTE              new_palette;
  int                   i;

  /* don't bother trying to create palette if not supported */
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  if (! FRAME_W32_DISPLAY_INFO (f)->has_palette)
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    return;

  log_palette = (LOGPALETTE *)
    alloca (sizeof (LOGPALETTE) +
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	     FRAME_W32_DISPLAY_INFO (f)->num_colors * sizeof (PALETTEENTRY));
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  log_palette->palVersion = 0x300;
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  log_palette->palNumEntries = FRAME_W32_DISPLAY_INFO (f)->num_colors;
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  list = FRAME_W32_DISPLAY_INFO (f)->color_list;
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  for (i = 0;
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       i < FRAME_W32_DISPLAY_INFO (f)->num_colors;
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       i++, list = list->next)
    log_palette->palPalEntry[i] = list->entry;

  new_palette = CreatePalette (log_palette);

  enter_crit ();

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  if (FRAME_W32_DISPLAY_INFO (f)->palette)
    DeleteObject (FRAME_W32_DISPLAY_INFO (f)->palette);
  FRAME_W32_DISPLAY_INFO (f)->palette = new_palette;
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  /* Realize display palette and garbage all frames. */
  release_frame_dc (f, get_frame_dc (f));

  leave_crit ();
}

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#define W32_COLOR(pe)  RGB (pe.peRed, pe.peGreen, pe.peBlue)
#define SET_W32_COLOR(pe, color) \
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  do \
    { \
      pe.peRed = GetRValue (color); \
      pe.peGreen = GetGValue (color); \
      pe.peBlue = GetBValue (color); \
      pe.peFlags = 0; \
    } while (0)

#if 0
/* Keep these around in case we ever want to track color usage. */
void
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w32_map_color (FRAME_PTR f, COLORREF color)
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{
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  struct w32_palette_entry * list = FRAME_W32_DISPLAY_INFO (f)->color_list;
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  if (NILP (Vw32_enable_palette))
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    return;

  /* check if color is already mapped */
  while (list)
    {
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      if (W32_COLOR (list->entry) == color)
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        {
	  ++list->refcount;
	  return;
	}
      list = list->next;
    }

  /* not already mapped, so add to list and recreate Windows palette */
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  list = (struct w32_palette_entry *)
    xmalloc (sizeof (struct w32_palette_entry));
  SET_W32_COLOR (list->entry, color);
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  list->refcount = 1;
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  list->next = FRAME_W32_DISPLAY_INFO (f)->color_list;
  FRAME_W32_DISPLAY_INFO (f)->color_list = list;
  FRAME_W32_DISPLAY_INFO (f)->num_colors++;
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  /* set flag that palette must be regenerated */
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  FRAME_W32_DISPLAY_INFO (f)->regen_palette = TRUE;
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}

void
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w32_unmap_color (FRAME_PTR f, COLORREF color)
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{
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  struct w32_palette_entry * list = FRAME_W32_DISPLAY_INFO (f)->color_list;
  struct w32_palette_entry **prev = &FRAME_W32_DISPLAY_INFO (f)->color_list;
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  if (NILP (Vw32_enable_palette))
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    return;

  /* check if color is already mapped */
  while (list)
    {
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      if (W32_COLOR (list->entry) == color)
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        {
	  if (--list->refcount == 0)
	    {
	      *prev = list->next;
	      xfree (list);
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	      FRAME_W32_DISPLAY_INFO (f)->num_colors--;
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	      break;
	    }
	  else
	    return;
	}
      prev = &list->next;
      list = list->next;
    }

  /* set flag that palette must be regenerated */
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  FRAME_W32_DISPLAY_INFO (f)->regen_palette = TRUE;
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}
#endif

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Geoff Voelker committed
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/* Decide if color named COLOR is valid for the display associated with
   the selected frame; if so, return the rgb values in COLOR_DEF.
   If ALLOC is nonzero, allocate a new colormap cell.  */

int
defined_color (f, color, color_def, alloc)
     FRAME_PTR f;
     char *color;
     COLORREF *color_def;
     int alloc;
{
  register Lisp_Object tem;
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  tem = x_to_w32_color (color);
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  if (!NILP (tem)) 
    {
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      if (!NILP (Vw32_enable_palette))
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	{
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	  struct w32_palette_entry * entry =
	    FRAME_W32_DISPLAY_INFO (f)->color_list;
	  struct w32_palette_entry ** prev =
	    &FRAME_W32_DISPLAY_INFO (f)->color_list;
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	  /* check if color is already mapped */
	  while (entry)
	    {