--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/event-gtk.c	Mon Aug 13 11:44:37 2007 +0200
@@ -0,0 +1,2165 @@
+/* The event_stream interface for X11 with gtk, and/or tty frames.
+   Copyright (C) 1991-5, 1997 Free Software Foundation, Inc.
+   Copyright (C) 1995 Sun Microsystems, Inc.
+   Copyright (C) 1996 Ben Wing.
+   Copyright (C) 2000 William Perry.
+
+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.  */
+
+/* This file is heavily based upon event-Xt.c */
+
+/* Synched up with: Not in FSF. */
+
+#include <config.h>
+#include "lisp.h"
+
+#include "console-gtk.h"
+
+#include "blocktype.h"
+#include "buffer.h"
+#include "commands.h"
+#include "console.h"
+#include "console-tty.h"
+#include "events.h"
+#include "frame.h"
+#include "objects-gtk.h"
+#include "process.h"
+#include "redisplay.h"
+#include "elhash.h"
+
+#include "gtk-xemacs.h"
+
+#include "systime.h"
+#include "sysproc.h" /* for MAXDESC */
+
+#ifdef FILE_CODING
+#include "lstream.h"
+#include "file-coding.h"
+#endif
+
+#include <gdk/gdkkeysyms.h>
+
+#ifdef HAVE_DRAGNDROP
+#include "dragdrop.h"
+#endif
+
+#if defined (HAVE_OFFIX_DND)
+#include "offix.h"
+#endif
+
+#include "events-mod.h"
+
+#include <gdk/gdkx.h>
+
+static struct event_stream *gtk_event_stream;
+
+/* Do we accept events sent by other clients? */
+int gtk_allow_sendevents;
+
+static int process_events_occurred;
+static int tty_events_occurred;
+
+/* Mask of bits indicating the descriptors that we wait for input on */
+extern SELECT_TYPE input_wait_mask, process_only_mask, tty_only_mask;
+
+static Lisp_Object gtk_keysym_to_emacs_keysym ();
+void debug_process_finalization (struct Lisp_Process *p);
+gboolean emacs_gtk_event_handler (GtkWidget *wid /* unused */,
+				  GdkEvent *event,
+				  gpointer closure /* unused */);
+
+static int last_quit_check_signal_tick_count;
+
+Lisp_Object Qkey_mapping;
+Lisp_Object Qsans_modifiers;
+
+static void enqueue_gtk_dispatch_event (Lisp_Object event);
+
+#define IS_MODIFIER_KEY(keysym)  \
+  ((((keysym) >= GDK_Shift_L) && ((keysym) <= GDK_Hyper_R)) \
+   || ((keysym) == GDK_Mode_switch) \
+   || ((keysym) == GDK_Num_Lock))
+
+
+
+/************************************************************************/
+/*                           magic-event handling                       */
+/************************************************************************/
+static void
+handle_focus_event_1 (struct frame *f, int in_p)
+{
+  /* We don't want to handle the focus change now, because we might
+     be in an accept-process-output, sleep-for, or sit-for.  So
+     we enqueue it.
+
+     Actually, we half handle it: we handle it as far as changing the
+     box cursor for redisplay, but we don't call any hooks or do any
+     select-frame stuff until after the sit-for.
+   */
+
+    if (in_p)
+    {
+	GTK_WIDGET_SET_FLAGS (FRAME_GTK_TEXT_WIDGET (f), GTK_HAS_FOCUS);
+    }
+    else
+    {
+	GTK_WIDGET_UNSET_FLAGS (FRAME_GTK_TEXT_WIDGET (f), GTK_HAS_FOCUS);
+    }
+    gtk_widget_grab_focus (FRAME_GTK_TEXT_WIDGET (f));
+    gtk_widget_draw_focus (FRAME_GTK_TEXT_WIDGET (f));
+
+    {
+	Lisp_Object frm;
+	Lisp_Object conser;
+	struct gcpro gcpro1;
+
+	XSETFRAME (frm, f);
+	conser = Fcons (frm, Fcons (FRAME_DEVICE (f), in_p ? Qt : Qnil));
+	GCPRO1 (conser);
+
+	emacs_handle_focus_change_preliminary (conser);
+	enqueue_magic_eval_event (emacs_handle_focus_change_final,
+				  conser);
+	UNGCPRO;
+    }
+}
+
+/* both GDK_MAP and GDK_VISIBILITY_NOTIFY can cause this
+   JV is_visible has the same semantics as f->visible*/
+static void
+change_frame_visibility (struct frame *f, int is_visible)
+{
+  Lisp_Object frame;
+
+  XSETFRAME (frame, f);
+
+  if (!FRAME_VISIBLE_P (f) && is_visible)
+    {
+      FRAME_VISIBLE_P (f) = is_visible;
+      /* This improves the double flicker when uniconifying a frame
+	 some.  A lot of it is not showing a buffer which has changed
+	 while the frame was iconified.  To fix it further requires
+	 the good 'ol double redisplay structure. */
+      MARK_FRAME_WINDOWS_STRUCTURE_CHANGED (f);
+      va_run_hook_with_args (Qmap_frame_hook, 1, frame);
+    }
+  else if (FRAME_VISIBLE_P (f) && !is_visible)
+    {
+      FRAME_VISIBLE_P (f) = 0;
+      va_run_hook_with_args (Qunmap_frame_hook, 1, frame);
+    }
+  else if (FRAME_VISIBLE_P (f) * is_visible < 0)
+    {
+      FRAME_VISIBLE_P(f) = - FRAME_VISIBLE_P(f);
+      if (FRAME_REPAINT_P (f))
+	      MARK_FRAME_WINDOWS_STRUCTURE_CHANGED (f);
+      va_run_hook_with_args (Qmap_frame_hook, 1, frame);
+    }
+}
+
+static void
+handle_map_event (struct frame *f, GdkEvent *event)
+{
+  Lisp_Object frame;
+
+  XSETFRAME (frame, f);
+  if (event->any.type == GDK_MAP)
+    {
+      FRAME_GTK_TOTALLY_VISIBLE_P (f) = 1;
+      change_frame_visibility (f, 1);
+    }
+  else
+    {
+      FRAME_GTK_TOTALLY_VISIBLE_P (f) = 0;
+      change_frame_visibility (f, 0);
+      /* Calling Fframe_iconified_p is the only way we have to
+         correctly update FRAME_ICONIFIED_P */
+      Fframe_iconified_p (frame);
+    }
+}
+
+static void
+handle_client_message (struct frame *f, GdkEvent *event)
+{
+  Lisp_Object frame;
+
+  XSETFRAME (frame, f);
+
+  /* The event-Xt code used to handle WM_DELETE_WINDOW here, but we
+     handle that directly in frame-gtk.c */
+	 
+  if (event->client.message_type == gdk_atom_intern ("WM_PROTOCOLS", 0) &&
+	   (GdkAtom) event->client.data.l[0] == gdk_atom_intern ("WM_TAKE_FOCUS", 0))
+    {
+      handle_focus_event_1 (f, 1);
+    }
+}
+
+static void
+emacs_gtk_handle_magic_event (struct Lisp_Event *emacs_event)
+{
+  /* This function can GC */
+  GdkEvent *event = &emacs_event->event.magic.underlying_gdk_event;
+  struct frame *f = XFRAME (EVENT_CHANNEL (emacs_event));
+
+  if (!FRAME_LIVE_P (f))
+    return;
+
+  switch (event->any.type)
+    {
+    case GDK_CLIENT_EVENT:
+      handle_client_message (f, event);
+      break;
+
+    case GDK_FOCUS_CHANGE:
+      handle_focus_event_1 (f, event->focus_change.in);
+      break;
+
+    case GDK_MAP:
+    case GDK_UNMAP:
+      handle_map_event (f, event);
+      break;
+
+    case GDK_ENTER_NOTIFY:
+      if (event->crossing.detail != GDK_NOTIFY_INFERIOR)
+	{
+	  Lisp_Object frame;
+
+	  XSETFRAME (frame, f);
+	  /* FRAME_X_MOUSE_P (f) = 1; */
+	  va_run_hook_with_args (Qmouse_enter_frame_hook, 1, frame);
+	}
+      break;
+
+    case GDK_LEAVE_NOTIFY:
+      if (event->crossing.detail != GDK_NOTIFY_INFERIOR)
+	{
+	  Lisp_Object frame;
+
+	  XSETFRAME (frame, f);
+	  /* FRAME_X_MOUSE_P (f) = 0; */
+	  va_run_hook_with_args (Qmouse_leave_frame_hook, 1, frame);
+	}
+      break;
+
+    case GDK_VISIBILITY_NOTIFY: /* window visiblity has changed */
+      if (event->visibility.window == GET_GTK_WIDGET_WINDOW (FRAME_GTK_SHELL_WIDGET (f)))
+	{
+	  FRAME_GTK_TOTALLY_VISIBLE_P (f) =
+	    (event->visibility.state == GDK_VISIBILITY_UNOBSCURED);
+	  /* Note that the fvwm pager only sends VisibilityNotify when
+	     changing pages. Is this all we need to do ? JV */
+	  /* Nope.  We must at least trigger a redisplay here.
+	     Since this case seems similar to MapNotify, I've
+	     factored out some code to change_frame_visibility().
+	     This triggers the necessary redisplay and runs
+	     (un)map-frame-hook.  - dkindred@cs.cmu.edu */
+	  /* Changed it again to support the tristate visibility flag */
+	  change_frame_visibility (f, (event->visibility.state
+				       != GDK_VISIBILITY_FULLY_OBSCURED) ? 1 : -1);
+	}
+      break;
+
+    default:
+      break;
+    }
+}
+
+/************************************************************************/
+/*                 Gtk to Emacs event conversion                        */
+/************************************************************************/
+
+static int
+keysym_obeys_caps_lock_p (guint sym, struct device *d)
+{
+  struct gtk_device *gd = DEVICE_GTK_DATA (d);
+  /* Eeeeevil hack.  Don't apply Caps_Lock to things that aren't alphabetic
+     characters, where "alphabetic" means something more than simply A-Z.
+     That is, if Caps_Lock is down, typing ESC doesn't produce Shift-ESC.
+     But if shift-lock is down, then it does. */
+  if (gd->lock_interpretation == GDK_Shift_Lock)
+    return 1;
+
+  return
+    ((sym >= GDK_A)        && (sym <= GDK_Z))          ||
+    ((sym >= GDK_a)        && (sym <= GDK_z))          ||
+    ((sym >= GDK_Agrave)   && (sym <= GDK_Odiaeresis)) ||
+    ((sym >= GDK_agrave)   && (sym <= GDK_odiaeresis)) ||
+    ((sym >= GDK_Ooblique) && (sym <= GDK_Thorn))      ||
+    ((sym >= GDK_oslash)   && (sym <= GDK_thorn));
+}
+
+static void
+set_last_server_timestamp (struct device *d, GdkEvent *gdk_event)
+{
+  guint32 t;
+  switch (gdk_event->type)
+    {
+    case GDK_KEY_PRESS:
+    case GDK_KEY_RELEASE:      t = gdk_event->key.time; break;
+    case GDK_BUTTON_PRESS:
+    case GDK_2BUTTON_PRESS:
+    case GDK_3BUTTON_PRESS:
+    case GDK_BUTTON_RELEASE:   t = gdk_event->button.time; break;
+    case GDK_ENTER_NOTIFY:
+    case GDK_LEAVE_NOTIFY:     t = gdk_event->crossing.time; break;
+    case GDK_MOTION_NOTIFY:    t = gdk_event->motion.time; break;
+    case GDK_PROPERTY_NOTIFY:  t = gdk_event->property.time; break;
+    case GDK_SELECTION_CLEAR:
+    case GDK_SELECTION_REQUEST:
+    case GDK_SELECTION_NOTIFY: t = gdk_event->selection.time; break;
+    default: return;
+    }
+  DEVICE_GTK_LAST_SERVER_TIMESTAMP (d) = t;
+}
+
+static Lisp_Object
+gtk_keysym_to_emacs_keysym (guint keysym, int simple_p)
+{
+  char *name;
+  if (keysym >= GDK_exclam && keysym <= GDK_asciitilde)
+    /* We must assume that the X keysym numbers for the ASCII graphic
+       characters are the same as their ASCII codes.  */
+    return make_char (keysym);
+
+  switch (keysym)
+    {
+      /* These would be handled correctly by the default case, but by
+	 special-casing them here we don't garbage a string or call
+	 intern().  */
+    case GDK_BackSpace:	return QKbackspace;
+    case GDK_Tab:	return QKtab;
+    case GDK_Linefeed:	return QKlinefeed;
+    case GDK_Return:	return QKreturn;
+    case GDK_Escape:	return QKescape;
+    case GDK_space:	return QKspace;
+    case GDK_Delete:	return QKdelete;
+    case 0:		return Qnil;
+    default:
+      if (simple_p) return Qnil;
+      /* !!#### not Mule-ized */
+      name = gdk_keyval_name (keysym);
+      if (!name || !name[0])
+	/* This happens if there is a mismatch between the Xlib of
+           XEmacs and the Xlib of the X server...
+
+	   Let's hard-code in some knowledge of common keysyms introduced
+	   in recent X11 releases.  Snarfed from X11/keysymdef.h
+
+	   Probably we should add some stuff here for X11R6. */
+	switch (keysym)
+	  {
+	  case 0xFF95: return KEYSYM ("kp-home");
+	  case 0xFF96: return KEYSYM ("kp-left");
+	  case 0xFF97: return KEYSYM ("kp-up");
+	  case 0xFF98: return KEYSYM ("kp-right");
+	  case 0xFF99: return KEYSYM ("kp-down");
+	  case 0xFF9A: return KEYSYM ("kp-prior");
+	  case 0xFF9B: return KEYSYM ("kp-next");
+	  case 0xFF9C: return KEYSYM ("kp-end");
+	  case 0xFF9D: return KEYSYM ("kp-begin");
+	  case 0xFF9E: return KEYSYM ("kp-insert");
+	  case 0xFF9F: return KEYSYM ("kp-delete");
+
+	  case 0x1005FF10: return KEYSYM ("SunF36"); /* labeled F11 */
+	  case 0x1005FF11: return KEYSYM ("SunF37"); /* labeled F12 */
+	  default:
+	    {
+	      char buf [64];
+	      sprintf (buf, "unknown-keysym-0x%X", (int) keysym);
+	      return KEYSYM (buf);
+	    }
+	  }
+      /* If it's got a one-character name, that's good enough. */
+      if (!name[1])
+	return make_char (name[0]);
+
+      /* If it's in the "Keyboard" character set, downcase it.
+	 The case of those keysyms is too totally random for us to
+	 force anyone to remember them.
+	 The case of the other character sets is significant, however.
+	 */
+      if ((((unsigned int) keysym) & (~0x1FF)) == ((unsigned int) 0xFE00))
+	{
+	  char buf [255];
+	  char *s1, *s2;
+	  for (s1 = name, s2 = buf; *s1; s1++, s2++) {
+	    if (*s1 == '_') {
+	      *s2 = '-';
+	    } else {
+	      *s2 = tolower (* (unsigned char *) s1);
+	    }
+	  }
+	  *s2 = 0;
+	  return KEYSYM (buf);
+	}
+      return KEYSYM (name);
+    }
+}
+
+static Lisp_Object
+gtk_to_emacs_keysym (struct device *d, GdkEventKey *event, int simple_p)
+     /* simple_p means don't try too hard (ASCII only) */
+{
+  if (event->length != 1)
+  {
+#ifdef FILE_CODING
+      /* Generate multiple emacs events */
+      Emchar ch;
+      Lisp_Object instream, fb_instream;
+      Lstream *istr;
+      struct gcpro gcpro1, gcpro2;
+
+      fb_instream =
+          make_fixed_buffer_input_stream ((unsigned char *) event->string, event->length);
+
+      /* ### Use Fget_coding_system (Vcomposed_input_coding_system) */
+      instream =
+	  make_decoding_input_stream (XLSTREAM (fb_instream),
+				      Fget_coding_system (Qundecided));
+      
+      istr = XLSTREAM (instream);
+
+      GCPRO2 (instream, fb_instream);
+      while ((ch = Lstream_get_emchar (istr)) != EOF)
+      {
+	  Lisp_Object emacs_event = Fmake_event (Qnil, Qnil);
+	  struct Lisp_Event *ev = XEVENT (emacs_event);
+	  ev->channel       = DEVICE_CONSOLE (d);
+	  ev->event_type    = key_press_event;
+	  ev->timestamp	    = event->time;
+	  ev->event.key.modifiers = 0;
+	  ev->event.key.keysym    = make_char (ch);
+	  enqueue_gtk_dispatch_event (emacs_event);
+      }
+      Lstream_close (istr);
+      UNGCPRO;
+      Lstream_delete (istr);
+      Lstream_delete (XLSTREAM (fb_instream));
+#else
+      int i;
+      for (i = 0; i < event->length; i++)
+      {
+	  Lisp_Object emacs_event = Fmake_event (Qnil, Qnil);
+	  struct Lisp_Event *ev = XEVENT (emacs_event);
+	  ev->channel       = DEVICE_CONSOLE (d);
+	  ev->event_type    = key_press_event;
+	  ev->timestamp	    = event->time;
+	  ev->event.key.modifiers = 0;
+	  ev->event.key.keysym    = make_char (event->string[i]);
+	  enqueue_gtk_dispatch_event (emacs_event);
+      }
+#endif
+      if (IS_MODIFIER_KEY (event->keyval) || (event->keyval == GDK_Mode_switch))
+	  return (Qnil);
+      return (gtk_keysym_to_emacs_keysym (event->keyval, simple_p));
+  }
+  else
+  {
+      if (IS_MODIFIER_KEY (event->keyval) || (event->keyval == GDK_Mode_switch))
+	  return (Qnil);
+      return (gtk_keysym_to_emacs_keysym (event->keyval, simple_p));
+  }
+}
+
+
+/************************************************************************/
+/*				timeout events				*/
+/************************************************************************/
+
+static int timeout_id_tick;
+
+struct GTK_timeout {
+    int id;
+    guint timeout_id;
+    struct GTK_timeout *next;
+} *pending_timeouts, *completed_timeouts;
+
+struct GTK_timeout_blocktype
+{
+  Blocktype_declare (struct GTK_timeout);
+} *the_GTK_timeout_blocktype;
+
+/* called by the gtk main loop */
+static gint
+gtk_timeout_callback (gpointer closure)
+{
+  struct GTK_timeout *timeout = (struct GTK_timeout *) closure;
+  struct GTK_timeout *t2 = pending_timeouts;
+
+  /* Remove this one from the list of pending timeouts */
+  if (t2 == timeout)
+    pending_timeouts = pending_timeouts->next;
+  else
+    {
+      while (t2->next && t2->next != timeout) t2 = t2->next;
+      assert (t2->next);
+      t2->next = t2->next->next;
+    }
+  /* Add this one to the list of completed timeouts */
+  timeout->next = completed_timeouts;
+  completed_timeouts = timeout;
+  return(FALSE);
+}
+
+static int
+emacs_gtk_add_timeout (EMACS_TIME thyme)
+{
+  struct GTK_timeout *timeout = Blocktype_alloc (the_GTK_timeout_blocktype);
+  EMACS_TIME current_time;
+  int milliseconds;
+
+  timeout->id = timeout_id_tick++;
+  timeout->next = pending_timeouts;
+  pending_timeouts = timeout;
+  EMACS_GET_TIME (current_time);
+  EMACS_SUB_TIME (thyme, thyme, current_time);
+  milliseconds = EMACS_SECS (thyme) * 1000 +
+    EMACS_USECS (thyme) / 1000;
+  if (milliseconds < 1)
+    milliseconds = 1;
+  timeout->timeout_id = gtk_timeout_add (milliseconds,
+					 gtk_timeout_callback,
+					 (gpointer) timeout);
+  return timeout->id;
+}
+
+static void
+emacs_gtk_remove_timeout (int id)
+{
+  struct GTK_timeout *timeout, *t2;
+
+  timeout = NULL;
+  
+  /* Find the timeout on the list of pending ones, if it's still there. */
+  if (pending_timeouts)
+    {
+      if (id == pending_timeouts->id)
+	{
+	  timeout = pending_timeouts;
+	  pending_timeouts = pending_timeouts->next;
+	}
+      else
+	{
+	  t2 = pending_timeouts;
+	  while (t2->next && t2->next->id != id) t2 = t2->next;
+	  if ( t2->next)   /*found it */
+	    {
+	      timeout = t2->next;
+	      t2->next = t2->next->next;
+	    }
+	}
+      /* if it was pending, we have removed it from the list */
+      if (timeout)
+	  gtk_timeout_remove (timeout->timeout_id);
+    }
+
+  /* It could be that the call back was already called but we didn't convert
+     into an Emacs event yet */
+  if (!timeout && completed_timeouts)
+    {
+      /* Code duplication! */
+      if (id == completed_timeouts->id)
+	{
+	  timeout = completed_timeouts;
+	  completed_timeouts = completed_timeouts->next;
+	}
+      else
+	{
+	  t2 = completed_timeouts;
+	  while (t2->next && t2->next->id != id) t2 = t2->next;
+	  if ( t2->next)   /*found it */
+	    {
+	      timeout = t2->next;
+	      t2->next = t2->next->next;
+	    }
+	}
+    }
+
+  /* If we found the thing on the lists of timeouts,
+     and removed it, deallocate
+  */
+  if (timeout)
+    Blocktype_free (the_GTK_timeout_blocktype, timeout);
+}
+
+static void
+gtk_timeout_to_emacs_event (struct Lisp_Event *emacs_event)
+{
+  struct GTK_timeout *timeout = completed_timeouts;
+  assert (timeout);
+  completed_timeouts = completed_timeouts->next;
+  emacs_event->event_type = timeout_event;
+  /* timeout events have nil as channel */
+  emacs_event->timestamp  = 0; /* #### wrong!! */
+  emacs_event->event.timeout.interval_id = timeout->id;
+  Blocktype_free (the_GTK_timeout_blocktype, timeout);
+}
+
+
+/************************************************************************/
+/*			process and tty events				*/
+/************************************************************************/
+
+struct what_is_ready_closure
+{
+  int fd;
+  Lisp_Object what;
+  gint id;
+};
+
+static Lisp_Object *filedesc_with_input;
+static struct what_is_ready_closure **filedesc_to_what_closure;
+
+static void
+init_what_input_once (void)
+{
+  int i;
+
+  filedesc_with_input = xnew_array (Lisp_Object, MAXDESC);
+  filedesc_to_what_closure =
+    xnew_array (struct what_is_ready_closure *, MAXDESC);
+
+  for (i = 0; i < MAXDESC; i++)
+    {
+      filedesc_to_what_closure[i] = 0;
+      filedesc_with_input[i] = Qnil;
+    }
+
+  process_events_occurred = 0;
+  tty_events_occurred = 0;
+}
+
+static void
+mark_what_as_being_ready (struct what_is_ready_closure *closure)
+{
+  if (NILP (filedesc_with_input[closure->fd]))
+    {
+      SELECT_TYPE temp_mask;
+      FD_ZERO (&temp_mask);
+      FD_SET (closure->fd, &temp_mask);
+      /* Check to make sure there's *really* input available.
+	 Sometimes things seem to get confused and this gets called
+	 for the tty fd when there's really only input available
+	 on some process's fd.	(It will subsequently get called
+	 for that process's fd, so returning without setting any
+	 flags will take care of it.)  To see the problem, uncomment
+	 the stderr_out below, turn NORMAL_QUIT_CHECK_TIMEOUT_MSECS
+	 down to 25, do sh -c 'xemacs -nw -q -f shell 2>/tmp/log'
+	 and press return repeatedly.  (Seen under AIX & Linux.)
+	 -dkindred@cs.cmu.edu */
+      if (!poll_fds_for_input (temp_mask))
+	{
+#if 0
+	  stderr_out ("mark_what_as_being_ready: no input available (fd=%d)\n",
+		      closure->fd);
+#endif
+	  return;
+	}
+      filedesc_with_input[closure->fd] = closure->what;
+      if (PROCESSP (closure->what))
+	{
+	  /* Don't increment this if the current process is already marked
+	   *  as having input. */
+	  process_events_occurred++;
+	}
+      else
+	{
+	  tty_events_occurred++;
+	}
+    }
+}
+
+static void
+gtk_what_callback (gpointer closure, gint source, GdkInputCondition why)
+{
+  /* If closure is 0, then we got a fake event from a signal handler.
+     The only purpose of this is to make XtAppProcessEvent() stop
+     blocking. */
+  if (closure)
+    mark_what_as_being_ready ((struct what_is_ready_closure *) closure);
+  else
+    {
+      fake_event_occurred++;
+      drain_signal_event_pipe ();
+    }
+}
+
+static void
+select_filedesc (int fd, Lisp_Object what)
+{
+  struct what_is_ready_closure *closure;
+
+  /* If somebody is trying to select something that's already selected
+     for, then something went wrong.  The generic routines ought to
+     detect this and error before here. */
+  assert (!filedesc_to_what_closure[fd]);
+
+  closure = xnew (struct what_is_ready_closure);
+  closure->fd = fd;
+  closure->what = what;
+  closure->id = gdk_input_add (fd, GDK_INPUT_READ,
+			       (GdkInputFunction) gtk_what_callback, closure);
+  filedesc_to_what_closure[fd] = closure;
+}
+
+static void
+unselect_filedesc (int fd)
+{
+  struct what_is_ready_closure *closure = filedesc_to_what_closure[fd];
+
+  assert (closure);
+  if (!NILP (filedesc_with_input[fd]))
+    {
+      /* We are unselecting this process before we have drained the rest of
+	 the input from it, probably from status_notify() in the command loop.
+	 This can happen like so:
+
+	  - We are waiting in XtAppNextEvent()
+	  - Process generates output
+	  - Process is marked as being ready
+	  - Process dies, SIGCHLD gets generated before we return (!?)
+	    It could happen I guess.
+	  - sigchld_handler() marks process as dead
+	  - Somehow we end up getting a new KeyPress event on the queue
+	    at the same time (I'm really so sure how that happens but I'm
+	    not sure it can't either so let's assume it can...).
+	  - Key events have priority so we return that instead of the proc.
+	  - Before dispatching the lisp key event we call status_notify()
+	  - Which deselects the process that SIGCHLD marked as dead.
+
+	 Thus we never remove it from _with_input and turn it into a lisp
+	 event, so we need to do it here.  But this does not mean that we're
+	 throwing away the last block of output - status_notify() has already
+	 taken care of running the proc filter or whatever.
+       */
+      filedesc_with_input[fd] = Qnil;
+      if (PROCESSP (closure->what))
+	{
+	  assert (process_events_occurred > 0);
+	  process_events_occurred--;
+	}
+      else
+	{
+	  assert (tty_events_occurred > 0);
+	  tty_events_occurred--;
+	}
+    }
+  gdk_input_remove (closure->id);
+  xfree (closure);
+  filedesc_to_what_closure[fd] = 0;
+}
+
+static void
+emacs_gtk_select_process (struct Lisp_Process *p)
+{
+  Lisp_Object process;
+  int infd = event_stream_unixoid_select_process (p);
+
+  XSETPROCESS (process, p);
+  select_filedesc (infd, process);
+}
+
+static void
+emacs_gtk_unselect_process (struct Lisp_Process *p)
+{
+  int infd = event_stream_unixoid_unselect_process (p);
+
+  unselect_filedesc (infd);
+}
+
+static USID
+emacs_gtk_create_stream_pair (void* inhandle, void* outhandle,
+			      Lisp_Object* instream, Lisp_Object* outstream, int flags)
+{
+    USID u = event_stream_unixoid_create_stream_pair
+	(inhandle, outhandle, instream, outstream, flags);
+    if (u != USID_ERROR)
+	u = USID_DONTHASH;
+    return u;
+}
+
+static USID
+emacs_gtk_delete_stream_pair (Lisp_Object instream, Lisp_Object outstream)
+{
+  event_stream_unixoid_delete_stream_pair (instream, outstream);
+  return USID_DONTHASH;
+}
+
+/* This is called from GC when a process object is about to be freed.
+   If we've still got pointers to it in this file, we're gonna lose hard.
+ */
+void
+debug_process_finalization (struct Lisp_Process *p)
+{
+#if 0 /* #### */
+  int i;
+  Lisp_Object instr, outstr;
+
+  get_process_streams (p, &instr, &outstr);
+  /* if it still has fds, then it hasn't been killed yet. */
+  assert (NILP(instr));
+  assert (NILP(outstr));
+  /* Better not still be in the "with input" table; we know it's got no fds. */
+  for (i = 0; i < MAXDESC; i++)
+    {
+      Lisp_Object process = filedesc_fds_with_input [i];
+      assert (!PROCESSP (process) || XPROCESS (process) != p);
+    }
+#endif
+}
+
+static void
+gtk_process_to_emacs_event (struct Lisp_Event *emacs_event)
+{
+  int i;
+  Lisp_Object process;
+
+  assert (process_events_occurred > 0);
+  for (i = 0; i < MAXDESC; i++)
+    {
+      process = filedesc_with_input[i];
+      if (PROCESSP (process))
+	break;
+    }
+  assert (i < MAXDESC);
+  filedesc_with_input[i] = Qnil;
+  process_events_occurred--;
+  /* process events have nil as channel */
+  emacs_event->event_type = process_event;
+  emacs_event->timestamp  = 0; /* #### */
+  emacs_event->event.process.process = process;
+}
+
+static void
+emacs_gtk_select_console (struct console *con)
+{
+  Lisp_Object console;
+  int infd;
+
+  if (CONSOLE_GTK_P (con))
+    return; /* Gtk consoles are automatically selected for when we initialize them */
+  infd = event_stream_unixoid_select_console (con);
+  XSETCONSOLE (console, con);
+  select_filedesc (infd, console);
+}
+
+static void
+emacs_gtk_unselect_console (struct console *con)
+{
+  Lisp_Object console;
+  int infd;
+
+  if (CONSOLE_GTK_P (con))
+	return; /* X consoles are automatically selected for when we initialize them */
+  infd = event_stream_unixoid_unselect_console (con);
+  XSETCONSOLE (console, con);
+  unselect_filedesc (infd);
+}
+
+/* read an event from a tty, if one is available.  Returns non-zero
+   if an event was available.  Note that when this function is
+   called, there should always be a tty marked as ready for input.
+   However, the input condition might actually be EOF, so there
+   may not really be any input available. (In this case,
+   read_event_from_tty_or_stream_desc() will arrange for the TTY device
+   to be deleted.) */
+
+static int
+gtk_tty_to_emacs_event (struct Lisp_Event *emacs_event)
+{
+  int i;
+
+  assert (tty_events_occurred > 0);
+  for (i = 0; i < MAXDESC; i++)
+    {
+      Lisp_Object console = filedesc_with_input[i];
+      if (CONSOLEP (console))
+	{
+	  assert (tty_events_occurred > 0);
+	  tty_events_occurred--;
+	  filedesc_with_input[i] = Qnil;
+	  if (read_event_from_tty_or_stream_desc
+	      (emacs_event, XCONSOLE (console), i))
+	    return 1;
+	}
+    }
+
+  return 0;
+}
+
+
+/************************************************************************/
+/*			Drag 'n Drop handling				*/
+/************************************************************************/
+#ifdef HAVE_DRAGNDROP
+#define TARGET_URI_LIST   0x00
+#define TARGET_TEXT_PLAIN 0x01
+#define TARGET_FILE_NAME  0x02
+#define TARGET_NETSCAPE   0x03
+
+static GdkAtom preferred_targets[10];
+
+void
+dragndrop_data_received (GtkWidget          *widget,
+			 GdkDragContext     *context,
+			 gint                x,
+			 gint                y,
+			 GtkSelectionData   *data,
+			 guint               info,
+			 guint               time)
+{
+  Lisp_Object event = Fmake_event (Qnil, Qnil);
+  struct device *d = gtk_any_window_to_device (widget->window);
+  struct frame *f = gtk_any_widget_or_parent_to_frame (d, widget);
+  struct Lisp_Event *ev = XEVENT (event);
+  Lisp_Object l_type = Qnil, l_data = Qnil;
+  Lisp_Object l_dndlist = Qnil, l_item = Qnil;
+  struct gcpro gcpro1, gcpro2, gcpro3, gcpro4;
+
+  GCPRO4 (l_type, l_data, l_dndlist, l_item);
+
+  ev->event_type = misc_user_event;
+  ev->timestamp = time;
+
+  XSETFRAME (ev->channel, f);
+
+  ev->event.misc.x = x;
+  ev->event.misc.y = y;
+
+  if (data->type == preferred_targets[TARGET_URI_LIST])
+    {
+      /* newline-separated list of URLs */
+      int start, end;
+      const char *string_data = (char *) data->data;
+
+      l_type = Qdragdrop_URL;
+
+      for (start = 0, end = 0; string_data && string_data[end]; end++)
+	{
+	  if ((string_data[end] == '\r') && (string_data[end+1] == '\n'))
+	    {
+	      l_item = make_string (&string_data[start], end - start);
+	      l_dndlist = Fcons (l_item, l_dndlist);
+	      ++end;
+	      start = ++end;
+	    }
+	}
+    }
+  else if (data->type == preferred_targets[TARGET_TEXT_PLAIN])
+    {
+      /* Arbitrary string */
+      l_type = Qdragdrop_MIME;
+      l_dndlist = list1 (list3 (list1 (build_string ("text/plain")),
+				build_string ("8_bit"),
+				make_ext_string (data->data,
+						 strlen ((char *)data->data),
+						 Qctext)));
+    }
+  else if (data->type == preferred_targets[TARGET_FILE_NAME])
+    {
+      /* Random filename */
+      char *hurl = dnd_url_hexify_string (data->data, "file:");
+
+      l_dndlist = list1 (make_string ((Bufbyte *)hurl, strlen (hurl)));
+      l_type = Qdragdrop_URL;
+
+      xfree (hurl);
+    }
+  else if (data->type == preferred_targets[TARGET_NETSCAPE])
+    {
+      /* Single URL */
+      l_dndlist = list1 (make_string ((Extbyte *)data->data, 
+				      strlen ((char *)data->data)));
+      l_type = Qdragdrop_URL;
+    }
+  else
+    {
+      /* Unknown type - what to do?
+	 We just pass it up to lisp - we already have a mime type.
+      */
+      l_type = Qdragdrop_MIME;
+      l_dndlist = list1 (list3 (list1 (build_string (gdk_atom_name (data->type))),
+				build_string ("8bit"),
+				make_ext_string ((Extbyte *) data->data,
+						 data->length, Qbinary)));
+    }
+
+  ev->event.misc.function = Qdragdrop_drop_dispatch;
+  ev->event.misc.object = Fcons (l_type, l_dndlist);
+
+  UNGCPRO;
+
+  gtk_drag_finish (context, TRUE, FALSE, time);
+  enqueue_gtk_dispatch_event (event);
+}
+
+gboolean
+dragndrop_dropped (GtkWidget *widget,
+		   GdkDragContext *drag_context,
+		   gint x,
+		   gint y,
+		   guint time,
+		   gpointer user_data)
+{
+  /* Netscape drops things like:
+     STRING
+     _SGI_ICON
+     _SGI_ICON_TYPE
+     SGI_FILE
+     FILE_NAME
+     _NETSCAPE_URL
+
+     gmc drops things like
+     application/x-mc-desktop-icon
+     text/uri-list
+     text/plain
+     _NETSCAPE_URL
+
+     We prefer:
+     text/uri-list
+     text/plain
+     FILE_NAME
+     _NETSCAPE_URL
+     first one
+  */
+  GdkAtom found = 0;
+  GList *list = drag_context->targets;
+
+  int i;
+
+  if (!preferred_targets[0])
+    {
+      preferred_targets[TARGET_URI_LIST]   = gdk_atom_intern ("text/uri-list", FALSE);
+      preferred_targets[TARGET_TEXT_PLAIN] = gdk_atom_intern ("text/plain", FALSE);
+      preferred_targets[TARGET_FILE_NAME]  = gdk_atom_intern ("FILE_NAME", FALSE);
+      preferred_targets[TARGET_NETSCAPE]   = gdk_atom_intern ("_NETSCAPE_URL", FALSE);
+    }
+
+#if 0
+  stderr_out ("Drop info available in the following formats: \n");
+  while (list)
+    {
+      stderr_out ("\t%s\n", gdk_atom_name ((GdkAtom)list->data));
+      list = list->next;
+    }
+  list = drag_context->targets;
+#endif
+
+  while (list && !found)
+    {
+      for (i = 0; preferred_targets[i] && !found; i++)
+	{
+	  if ((GdkAtom) list->data == preferred_targets[i])
+	    {
+	      found = (GdkAtom) list->data;
+	    }
+	}
+      list = list->next;
+    }
+
+  if (!found)
+    {
+      found = (GdkAtom) drag_context->targets->data;
+    }
+
+  gtk_drag_get_data (GTK_WIDGET (user_data), drag_context, found, time);
+  return (TRUE);
+}
+#endif /* HAVE_DRAGNDROP */
+
+
+/************************************************************************/
+/*			get the next event from gtk			*/
+/************************************************************************/
+
+static Lisp_Object dispatch_event_queue, dispatch_event_queue_tail;
+
+static void
+enqueue_gtk_dispatch_event (Lisp_Object event)
+{
+  enqueue_event (event, &dispatch_event_queue, &dispatch_event_queue_tail);
+}
+
+static Lisp_Object
+dequeue_gtk_dispatch_event (void)
+{
+  return dequeue_event (&dispatch_event_queue, &dispatch_event_queue_tail);
+}
+
+/* This business exists because menu events "happen" when
+   menubar_selection_callback() is called from somewhere deep
+   within XtAppProcessEvent in emacs_Xt_next_event().  The
+   callback needs to terminate the modal loop in that function
+   or else it will continue waiting until another event is
+   received.
+
+   Same business applies to scrollbar events. */
+
+void
+signal_special_gtk_user_event (Lisp_Object channel, Lisp_Object function,
+			      Lisp_Object object)
+{
+  Lisp_Object event = Fmake_event (Qnil, Qnil);
+
+  XEVENT (event)->event_type = misc_user_event;
+  XEVENT (event)->channel = channel;
+  XEVENT (event)->event.eval.function = function;
+  XEVENT (event)->event.eval.object = object;
+
+  enqueue_gtk_dispatch_event (event);
+}
+
+static void
+emacs_gtk_next_event (struct Lisp_Event *emacs_event)
+{
+ we_didnt_get_an_event:
+
+  while (NILP (dispatch_event_queue) &&
+	 !completed_timeouts         &&
+	 !fake_event_occurred        &&
+	 !process_events_occurred    &&
+	 !tty_events_occurred)
+    {
+      gtk_main_iteration();
+    }
+
+  if (!NILP (dispatch_event_queue))
+    {
+      Lisp_Object event, event2;
+      XSETEVENT (event2, emacs_event);
+      event = dequeue_gtk_dispatch_event ();
+      Fcopy_event (event, event2);
+      Fdeallocate_event (event);
+    }
+  else if (tty_events_occurred)
+    {
+      if (!gtk_tty_to_emacs_event (emacs_event))
+	goto we_didnt_get_an_event;
+    }
+  else if (completed_timeouts)
+    gtk_timeout_to_emacs_event (emacs_event);
+  else if (fake_event_occurred)
+    {
+      /* A dummy event, so that a cycle of the command loop will occur. */
+      fake_event_occurred = 0;
+      /* eval events have nil as channel */
+      emacs_event->event_type = eval_event;
+      emacs_event->event.eval.function = Qidentity;
+      emacs_event->event.eval.object = Qnil;
+    }
+  else /* if (process_events_occurred) */
+    gtk_process_to_emacs_event (emacs_event);
+}
+
+int
+gtk_event_to_emacs_event (struct frame *frame, GdkEvent *gdk_event, struct Lisp_Event *emacs_event)
+{
+  struct device *d = NULL;
+  struct gtk_device *gd = NULL;
+  gboolean accept_any_window = FALSE;
+
+  if (!frame)
+    {
+      frame = XFRAME (Fselected_frame (Vdefault_gtk_device));
+      accept_any_window = TRUE;
+    }
+
+  d = XDEVICE (FRAME_DEVICE (frame));
+  gd = DEVICE_GTK_DATA (d);
+
+  set_last_server_timestamp (d, gdk_event);
+
+  switch (gdk_event->type)
+    {
+      /* XEmacs handles double and triple clicking on its own, and if
+         we capture these events, it royally confuses the code in
+         ../lisp/mouse.el */
+    case GDK_2BUTTON_PRESS:
+    case GDK_3BUTTON_PRESS:
+      return (0);
+
+    case GDK_BUTTON_PRESS:
+    case GDK_BUTTON_RELEASE:
+	/* We need to ignore button events outside our main window or
+	   things get ugly.  The standard scrollbars in Gtk try to be
+	   nice and pass the button press events up to the parent
+	   widget.  This causes us no end of grief though.  Effects
+	   range from setting point to the wrong place to selecting
+	   new windows. */
+      {
+	GdkWindow *w = gdk_window_at_pointer (NULL, NULL);
+
+	/* If you press mouse button and drag it around, and release
+           it outside the window, you will get a NULL GdkWindow at
+           pointer.  We need to forward these events on to XEmacs so
+           that the mouse selection voodoo works.
+	*/
+	if (w && (w != gdk_window_lookup (GDK_ROOT_WINDOW ())))
+	  {
+	    GdkEvent ev;
+	    GtkWidget *wid = NULL;
+
+	    ev.any.window = w;
+	    wid = gtk_get_event_widget (&ev);
+
+	    if (!GTK_IS_XEMACS (wid) && !accept_any_window)
+	      {
+		return (0);
+	      }
+	  }
+	if (!accept_any_window)
+	  gtk_widget_grab_focus (FRAME_GTK_TEXT_WIDGET (frame));
+      }
+      /* Fall through */
+    case GDK_KEY_PRESS:
+      {
+	unsigned int modifiers = 0;
+	int shift_p, lock_p;
+	gboolean key_event_p = (gdk_event->type == GDK_KEY_PRESS);
+	unsigned int *state =
+	  key_event_p ? &gdk_event->key.state : &gdk_event->button.state;
+
+	/* If this is a synthetic KeyPress or Button event, and the user
+	   has expressed a disinterest in this security hole, then drop
+	   it on the floor. */
+	/* #### BILL!!! Should this be a generic check for ANY synthetic
+	   event? */
+	if ((gdk_event->any.send_event) && !gtk_allow_sendevents)
+	  return 0;
+
+	DEVICE_GTK_MOUSE_TIMESTAMP (d) =
+	  DEVICE_GTK_GLOBAL_MOUSE_TIMESTAMP (d) =
+	  key_event_p ? gdk_event->key.time : gdk_event->button.time;
+
+	if (*state & GDK_CONTROL_MASK)    modifiers |= XEMACS_MOD_CONTROL;
+	if (*state & gd->MetaMask)   modifiers |= XEMACS_MOD_META;
+	if (*state & gd->SuperMask)  modifiers |= XEMACS_MOD_SUPER;
+	if (*state & gd->HyperMask)  modifiers |= XEMACS_MOD_HYPER;
+	if (*state & gd->AltMask)    modifiers |= XEMACS_MOD_ALT;
+
+	/* Ignore the Caps_Lock key if:
+	   - any other modifiers are down, so that Caps_Lock doesn't
+	   turn C-x into C-X, which would suck.
+	   - the event was a mouse event. */
+	if (modifiers || ! key_event_p)
+          *state &= (~GDK_LOCK_MASK);
+
+	shift_p = *state & GDK_SHIFT_MASK;
+	lock_p  = *state & GDK_LOCK_MASK;
+
+	if (shift_p || lock_p)
+	  modifiers |= XEMACS_MOD_SHIFT;
+
+	if (key_event_p)
+	  {
+	    GdkEventKey *key_event = &gdk_event->key;
+	    Lisp_Object keysym;
+
+	    /* This used to compute the frame from the given X window and
+	       store it here, but we really don't care about the frame. */
+	    emacs_event->channel = DEVICE_CONSOLE (d);
+
+	    /* Keysym mucking has already been done inside the
+               GdkEventKey parsing */
+	    keysym = gtk_to_emacs_keysym (d, key_event, 0);
+
+	    /* If the emacs keysym is nil, then that means that the X
+	       keysym was either a Modifier or NoSymbol, which
+	       probably means that we're in the midst of reading a
+	       Multi_key sequence, or a "dead" key prefix, or XIM
+	       input. Ignore it. */
+	    if (NILP (keysym))
+	      return 0;
+
+	    /* More Caps_Lock garbage: Caps_Lock should *only* add the
+	       shift modifier to two-case keys (that is, A-Z and
+	       related characters). So at this point (after looking up
+	       the keysym) if the keysym isn't a dual-case alphabetic,
+	       and if the caps lock key was down but the shift key
+	       wasn't, then turn off the shift modifier.  Gag barf */
+	    /* #### type lossage: assuming equivalence of emacs and
+	       X keysyms */
+	    /* !!#### maybe fix for Mule */
+	    if (lock_p && !shift_p &&
+		! (CHAR_OR_CHAR_INTP (keysym)
+		   && keysym_obeys_caps_lock_p
+		   ((guint) XCHAR_OR_CHAR_INT (keysym), d)))
+	      modifiers &= (~XEMACS_MOD_SHIFT);
+
+	    /* If this key contains two distinct keysyms, that is,
+	       "shift" generates a different keysym than the
+	       non-shifted key, then don't apply the shift modifier
+	       bit: it's implicit.  Otherwise, if there would be no
+	       other way to tell the difference between the shifted
+	       and unshifted version of this key, apply the shift bit.
+	       Non-graphics, like Backspace and F1 get the shift bit
+	       in the modifiers slot.  Neither the characters "a",
+	       "A", "2", nor "@" normally have the shift bit set.
+	       However, "F1" normally does. */
+	    if (modifiers & XEMACS_MOD_SHIFT)
+	      {
+		if (CHAR_OR_CHAR_INTP (keysym))
+		  {
+		    modifiers &= ~XEMACS_MOD_SHIFT;
+		  }
+	      }
+		
+	    emacs_event->event_type	     = key_press_event;
+	    emacs_event->timestamp	     = key_event->time;
+	    emacs_event->event.key.modifiers = modifiers;
+	    emacs_event->event.key.keysym    = keysym;
+	  }
+	else                    /* Mouse press/release event */
+	  {
+	    GdkEventButton *button_event = &gdk_event->button;
+	    XSETFRAME (emacs_event->channel, frame);
+
+	    emacs_event->event_type = (button_event->type == GDK_BUTTON_RELEASE) ?
+	      button_release_event : button_press_event;
+
+	    emacs_event->event.button.modifiers = modifiers;
+	    emacs_event->timestamp		= button_event->time;
+	    emacs_event->event.button.button	= button_event->button;
+	    emacs_event->event.button.x		= button_event->x;
+	    emacs_event->event.button.y		= button_event->y;
+	  }
+      }
+      break;
+    case GDK_KEY_RELEASE:
+	return 0;
+	break;
+    case GDK_MOTION_NOTIFY:
+      {
+        GdkEventMotion *ev = &gdk_event->motion;
+        unsigned int modifiers = 0;
+	gint x,y;
+	GdkModifierType mask;
+
+        /* We use MOTION_HINT_MASK, so we will get only one motion
+           event until the next time we call gdk_window_get_pointer or
+           the user clicks the mouse.  So call gdk_window_get_pointer
+           now (meaning that the event will be in sync with the server
+           just before Fnext_event() returns).  If the mouse is still
+           in motion, then the server will immediately generate
+           exactly one more motion event, which will be on the queue
+           waiting for us next time around. */
+	gdk_window_get_pointer (ev->window, &x, &y, &mask);
+
+        DEVICE_GTK_MOUSE_TIMESTAMP (d) = ev->time;
+
+        XSETFRAME (emacs_event->channel, frame);
+        emacs_event->event_type	    = pointer_motion_event;
+        emacs_event->timestamp      = ev->time;
+        emacs_event->event.motion.x = x;
+        emacs_event->event.motion.y = y;
+        if (mask & GDK_SHIFT_MASK)	modifiers |= XEMACS_MOD_SHIFT;
+        if (mask & GDK_CONTROL_MASK)	modifiers |= XEMACS_MOD_CONTROL;
+        if (mask & gd->MetaMask)	modifiers |= XEMACS_MOD_META;
+        if (mask & gd->SuperMask)	modifiers |= XEMACS_MOD_SUPER;
+        if (mask & gd->HyperMask)	modifiers |= XEMACS_MOD_HYPER;
+        if (mask & gd->AltMask)	modifiers |= XEMACS_MOD_ALT;
+        /* Currently ignores Shift_Lock but probably shouldn't
+           (but it definitely should ignore Caps_Lock). */
+        emacs_event->event.motion.modifiers = modifiers;
+      }
+    break;
+
+    default: /* it's a magic event */
+      return (0);
+	break;
+    }
+  return 1;
+}
+
+static const char *event_name (GdkEvent *);
+
+static gboolean
+generic_event_handler (GtkWidget *widget, GdkEvent *event)
+{
+    Lisp_Object emacs_event = Qnil;
+    if (!GTK_IS_XEMACS (widget))
+    {
+	stderr_out ("Got a %s event for a non-XEmacs widget\n",event_name (event));
+	return (FALSE);
+    }
+
+    emacs_event = Fmake_event (Qnil, Qnil);
+
+    if (gtk_event_to_emacs_event (GTK_XEMACS_FRAME (widget), event, XEVENT (emacs_event)))
+    {
+	enqueue_gtk_dispatch_event (emacs_event);
+	return (TRUE);
+    }
+    else
+    {
+	Fdeallocate_event (emacs_event);
+    }
+    return (FALSE);
+}
+
+gint emacs_gtk_key_event_handler(GtkWidget *widget, GdkEventKey *event)
+{
+    return (generic_event_handler (widget, (GdkEvent *) event));
+}
+
+gint emacs_gtk_button_event_handler(GtkWidget *widget, GdkEventButton *event)
+{
+    return (generic_event_handler (widget, (GdkEvent *) event));
+}
+
+gint emacs_gtk_motion_event_handler (GtkWidget *widget, GdkEventMotion *event)
+{
+    return (generic_event_handler (widget, (GdkEvent *) event));
+}
+
+gboolean
+emacs_shell_event_handler (GtkWidget *wid /* unused */,
+			   GdkEvent *event,
+			   gpointer closure)
+{
+    struct frame *frame = (struct frame *) closure;
+    Lisp_Object lisp_event = Fmake_event (Qnil, Qnil);
+    struct Lisp_Event *emacs_event = XEVENT (lisp_event);
+    GdkEvent *gdk_event_copy = &emacs_event->event.magic.underlying_gdk_event;
+    struct device *d = XDEVICE (FRAME_DEVICE (frame));
+    gboolean ignore_p = FALSE;
+
+    set_last_server_timestamp (d, event);
+
+#define FROB(event_member) gdk_event_copy->event_member = event->event_member
+
+    switch (event->type)
+    {
+    case GDK_SELECTION_REQUEST:
+    case GDK_SELECTION_CLEAR:
+    case GDK_SELECTION_NOTIFY:  FROB(selection); break;
+    case GDK_PROPERTY_NOTIFY:   FROB(property); break;
+    case GDK_CLIENT_EVENT:      FROB(client); break;
+    case GDK_MAP:
+    case GDK_UNMAP:	      	FROB(any); break;
+    case GDK_CONFIGURE:		FROB(configure); break;
+    case GDK_ENTER_NOTIFY:
+    case GDK_LEAVE_NOTIFY:      FROB(crossing); break;
+    case GDK_FOCUS_CHANGE:      FROB(focus_change); break;
+    case GDK_VISIBILITY_NOTIFY: FROB(visibility); break;
+    default:
+	ignore_p = TRUE;
+	/* Hrmm... do we really want to swallow all the other events as magic? */
+	*gdk_event_copy = *event;
+	break;
+    }
+#undef FROB
+
+    emacs_event->event_type = magic_event;
+    XSETFRAME (emacs_event->channel, frame);
+
+    if (ignore_p)
+    {
+	stderr_out ("Ignoring event... (%s)\n", event_name (event));
+	Fdeallocate_event (lisp_event);
+	return (FALSE);
+    }
+    else
+    {
+	enqueue_gtk_dispatch_event (lisp_event);
+	return (TRUE);
+    }
+}
+
+
+/************************************************************************/
+/*                      input pending / C-g checking                    */
+/************************************************************************/
+static void
+gtk_check_for_quit_char (struct device *d);
+
+static void
+check_for_tty_quit_char (struct device *d)
+{
+  SELECT_TYPE temp_mask;
+  int infd = DEVICE_INFD (d);
+  struct console *con = XCONSOLE (DEVICE_CONSOLE (d));
+  Emchar quit_char = CONSOLE_QUIT_CHAR (con);
+
+  FD_ZERO (&temp_mask);
+  FD_SET (infd, &temp_mask);
+
+  while (1)
+    {
+      Lisp_Object event;
+      Emchar the_char;
+
+      if (!poll_fds_for_input (temp_mask))
+	return;
+
+      event = Fmake_event (Qnil, Qnil);
+      if (!read_event_from_tty_or_stream_desc (XEVENT (event), con, infd))
+	/* EOF, or something ... */
+	return;
+      /* #### bogus.  quit-char should be allowed to be any sort
+	 of event. */
+      the_char = event_to_character (XEVENT (event), 1, 0, 0);
+      if (the_char >= 0 && the_char == quit_char)
+	{
+	  Vquit_flag = Qt;
+	  /* do not queue the C-g.  See above. */
+	  return;
+	}
+
+      /* queue the read event to be read for real later. */
+      enqueue_gtk_dispatch_event (event);
+    }
+}
+
+static void
+emacs_gtk_quit_p (void)
+{
+  Lisp_Object devcons, concons;
+
+  CONSOLE_LOOP (concons)
+    {
+      struct console *con = XCONSOLE (XCAR (concons));
+      if (!con->input_enabled)
+	continue;
+
+      CONSOLE_DEVICE_LOOP (devcons, con)
+	{
+	  struct device *d;
+	  d = XDEVICE (XCAR (devcons));
+
+	  if (DEVICE_GTK_P (d))
+	    /* emacs may be exiting */
+	    gtk_check_for_quit_char (d);
+	  else if (DEVICE_TTY_P (d))
+	    check_for_tty_quit_char (d);
+	}
+    }
+}
+
+#include <gdk/gdkx.h>
+
+static void
+drain_gtk_queue (void)
+
+{
+  /* We can't just spin through here and wait for GTKs idea of the
+     event queue to get empty, or the queue never gets drained.  The
+     situation is as follows.  A process event gets signalled, we put
+     it on the queue, then we go into Fnext_event(), which calls
+     drain_gtk_queue().  But gtk_events_pending() will always return
+     TRUE if there are file-descriptor (aka our process) events
+     pending.  Using GDK_events_pending() only shows us windowing
+     system events.
+  */
+  if (GDK_DISPLAY ())
+    while (gdk_events_pending ())
+      gtk_main_iteration ();
+}
+
+static int
+emacs_gtk_event_pending_p (int user_p)
+{
+  Lisp_Object event;
+  int tick_count_val;
+
+  /* If `user_p' is false, then this function returns whether there are any
+     X, timeout, or fd events pending (that is, whether emacs_gtk_next_event()
+     would return immediately without blocking).
+
+     if `user_p' is true, then this function returns whether there are any
+     *user generated* events available (that is, whether there are keyboard
+     or mouse-click events ready to be read).  This also implies that
+     emacs_Xt_next_event() would not block.
+
+     In a non-SIGIO world, this also checks whether the user has typed ^G,
+     since this is a convenient place to do so.  We don't need to do this
+     in a SIGIO world, since input causes an interrupt.
+   */
+
+  /* This function used to simply check whether there were any X
+     events (or if user_p was 1, it iterated over all the pending
+     X events using XCheckIfEvent(), looking for keystrokes and
+     button events).  That worked in the old cheesoid event loop,
+     which didn't go through XtAppDispatchEvent(), but it doesn't
+     work any more -- X events may not result in anything.  For
+     example, a button press in a blank part of the menubar appears
+     as an X event but will not result in any Emacs events (a
+     button press that activates the menubar results in an Emacs
+     event through the stop_next_event mechanism).
+
+     The only accurate way of determining whether these X events
+     translate into Emacs events is to go ahead and dispatch them
+     until there's something on the dispatch queue. */
+
+  /* See if there are any user events already on the queue. */
+  EVENT_CHAIN_LOOP (event, dispatch_event_queue)
+    if (!user_p || command_event_p (event))
+      return 1;
+
+  /* See if there's any TTY input available.
+   */
+  if (poll_fds_for_input (tty_only_mask))
+    return 1;
+
+  if (!user_p)
+    {
+      /* If not user_p and there are any timer or file-desc events
+	 pending, we know there will be an event so we're through. */
+/*      XtInputMask pending_value; */
+
+      /* Note that formerly we just checked the value of XtAppPending()
+	 to determine if there was file-desc input.  This doesn't
+	 work any more with the signal_event_pipe; XtAppPending()
+	 will says "yes" in this case but there isn't really any
+	 input.  Another way of fixing this problem is for the
+	 signal_event_pipe to generate actual input in the form
+	 of an identity eval event or something. (#### maybe this
+	 actually happens?) */
+
+      if (poll_fds_for_input (process_only_mask))
+	return 1;
+
+      /* #### Is there any way to do this in Gtk?  I don't think there
+              is a 'peek' for events */
+#if 0
+      pending_value = XtAppPending (Xt_app_con);
+
+      if (pending_value & XtIMTimer)
+	return 1;
+#endif
+    }
+
+  /* XtAppPending() can be super-slow, esp. over a network connection.
+     Quantify results have indicated that in some cases the
+     call to detect_input_pending() completely dominates the
+     running time of redisplay().  Fortunately, in a SIGIO world
+     we can more quickly determine whether there are any X events:
+     if an event has happened since the last time we checked, then
+     a SIGIO will have happened.  On a machine with broken SIGIO,
+     we'll still be in an OK state -- the sigio_happened flag
+     will get set at least once a second, so we'll be no more than
+     one second behind reality. (In general it's OK if we
+     erroneously report no input pending when input is actually
+     pending() -- preemption is just a bit less efficient, that's
+     all.  It's bad bad bad if you err the other way -- you've
+     promised that `next-event' won't block but it actually will,
+     and some action might get delayed until the next time you
+     hit a key.)
+     */
+
+  /* quit_check_signal_tick_count is volatile so try to avoid race conditions
+     by using a temporary variable */
+  tick_count_val = quit_check_signal_tick_count;
+  if (last_quit_check_signal_tick_count != tick_count_val)
+    {
+      last_quit_check_signal_tick_count = tick_count_val;
+
+      /* We need to drain the entire queue now -- if we only
+         drain part of it, we may later on end up with events
+         actually pending but detect_input_pending() returning
+         false because there wasn't another SIGIO. */
+
+      drain_gtk_queue ();
+
+      EVENT_CHAIN_LOOP (event, dispatch_event_queue)
+        if (!user_p || command_event_p (event))
+          return 1;
+    }
+
+  return 0;
+}
+
+
+/************************************************************************/
+/*                            initialization                            */
+/************************************************************************/
+
+void
+syms_of_event_gtk (void)
+{
+  defsymbol (&Qkey_mapping, "key-mapping");
+  defsymbol (&Qsans_modifiers, "sans-modifiers");
+}
+
+void reinit_vars_of_event_gtk (void)
+{
+  gtk_event_stream = xnew (struct event_stream);
+  gtk_event_stream->event_pending_p 	= emacs_gtk_event_pending_p;
+  gtk_event_stream->next_event_cb	= emacs_gtk_next_event;
+  gtk_event_stream->handle_magic_event_cb= emacs_gtk_handle_magic_event;
+  gtk_event_stream->add_timeout_cb 	= emacs_gtk_add_timeout;
+  gtk_event_stream->remove_timeout_cb 	= emacs_gtk_remove_timeout;
+  gtk_event_stream->select_console_cb 	= emacs_gtk_select_console;
+  gtk_event_stream->unselect_console_cb = emacs_gtk_unselect_console;
+  gtk_event_stream->select_process_cb 	= emacs_gtk_select_process;
+  gtk_event_stream->unselect_process_cb = emacs_gtk_unselect_process;
+  gtk_event_stream->quit_p_cb		= emacs_gtk_quit_p;
+  gtk_event_stream->create_stream_pair_cb= emacs_gtk_create_stream_pair;
+  gtk_event_stream->delete_stream_pair_cb= emacs_gtk_delete_stream_pair;
+
+  the_GTK_timeout_blocktype = Blocktype_new (struct GTK_timeout_blocktype);
+
+  /* this function only makes safe calls */
+  init_what_input_once ();
+}
+
+void
+vars_of_event_gtk (void)
+{
+  reinit_vars_of_event_gtk ();
+
+  dispatch_event_queue = Qnil;
+  staticpro (&dispatch_event_queue);
+  dispatch_event_queue_tail = Qnil;
+
+  DEFVAR_BOOL ("gtk-allow-sendevents", &gtk_allow_sendevents /*
+*Non-nil means to allow synthetic events.  Nil means they are ignored.
+Beware: allowing emacs to process SendEvents opens a big security hole.
+*/ );
+  gtk_allow_sendevents = 0;
+
+  last_quit_check_signal_tick_count = 0;
+}
+
+void
+init_event_gtk_late (void) /* called when already initialized */
+{
+  timeout_id_tick = 1;
+  pending_timeouts = 0;
+  completed_timeouts = 0;
+
+  event_stream = gtk_event_stream;
+
+#if 0
+  /* Shut GDK the hell up */
+  gdk_error_trap_push ();
+#endif
+
+  gdk_input_add (signal_event_pipe[0], GDK_INPUT_READ,
+		 (GdkInputFunction) gtk_what_callback, NULL);
+}
+
+/* Bogus utility routines */
+static const char *event_name (GdkEvent *ev)
+{
+  return (gtk_event_name (ev->any.type));
+}
+
+/* This is down at the bottom of the file so I can avoid polluting the
+   generic code with this X specific CRAP! */
+
+#include <gdk/gdkx.h>
+#include <X11/keysym.h>
+/* #### BILL!!! Fix this please! */
+
+
+/************************************************************************/
+/*                            keymap handling                           */
+/************************************************************************/
+
+/* X bogusly doesn't define the interpretations of any bits besides
+   ModControl, ModShift, and ModLock; so the Interclient Communication
+   Conventions Manual says that we have to bend over backwards to figure
+   out what the other modifier bits mean.  According to ICCCM:
+
+   - Any keycode which is assigned ModControl is a "control" key.
+
+   - Any modifier bit which is assigned to a keycode which generates Meta_L
+     or Meta_R is the modifier bit meaning "meta".  Likewise for Super, Hyper,
+     etc.
+
+   - Any keypress event which contains ModControl in its state should be
+     interpreted as a "control" character.
+
+   - Any keypress event which contains a modifier bit in its state which is
+     generated by a keycode whose corresponding keysym is Meta_L or Meta_R
+     should be interpreted as a "meta" character.  Likewise for Super, Hyper,
+     etc.
+
+   - It is illegal for a keysym to be associated with more than one modifier
+     bit.
+
+   This means that the only thing that emacs can reasonably interpret as a
+   "meta" key is a key whose keysym is Meta_L or Meta_R, and which generates
+   one of the modifier bits Mod1-Mod5.
+
+   Unfortunately, many keyboards don't have Meta keys in their default
+   configuration.  So, if there are no Meta keys, but there are "Alt" keys,
+   emacs will interpret Alt as Meta.  If there are both Meta and Alt keys,
+   then the Meta keys mean "Meta", and the Alt keys mean "Alt" (it used to
+   mean "Symbol," but that just confused the hell out of way too many people).
+
+   This works with the default configurations of the 19 keyboard-types I've
+   checked.
+
+   Emacs detects keyboard configurations which violate the above rules, and
+   prints an error message on the standard-error-output.  (Perhaps it should
+   use a pop-up-window instead.)
+ */
+
+static void
+gtk_reset_key_mapping (struct device *d)
+{
+  Display *display = GDK_DISPLAY ();
+  struct gtk_device *xd = DEVICE_GTK_DATA (d);
+  XModifierKeymap *map = (XModifierKeymap *) xd->x_keysym_map;
+  KeySym *keysym, *keysym_end;
+  Lisp_Object hashtable;
+  int key_code_count, keysyms_per_code;
+
+  if (map)
+    XFree ((char *) map);
+  XDisplayKeycodes (display,
+		    &xd->x_keysym_map_min_code,
+		    &xd->x_keysym_map_max_code);
+  key_code_count = xd->x_keysym_map_max_code - xd->x_keysym_map_min_code + 1;
+  map = (XModifierKeymap *)
+    XGetKeyboardMapping (display, xd->x_keysym_map_min_code, key_code_count,
+			 &xd->x_keysym_map_keysyms_per_code);
+
+  xd->x_keysym_map = (void *)map;
+  hashtable = xd->x_keysym_map_hashtable;
+  if (HASH_TABLEP (hashtable))
+    {
+      Fclrhash (hashtable);
+    }
+  else
+    {
+      xd->x_keysym_map_hashtable = hashtable =
+	make_lisp_hash_table (128, HASH_TABLE_NON_WEAK, HASH_TABLE_EQUAL);
+    }
+
+  for (keysym = (KeySym *) map,
+	 keysyms_per_code = xd->x_keysym_map_keysyms_per_code,
+	 keysym_end = keysym + (key_code_count * keysyms_per_code);
+       keysym < keysym_end;
+       keysym += keysyms_per_code)
+    {
+      int j;
+
+      if (keysym[0] == NoSymbol)
+	continue;
+
+      {
+	char *name = XKeysymToString (keysym[0]);
+	Lisp_Object sym = gtk_keysym_to_emacs_keysym (keysym[0], 0);
+	if (name)
+	  {
+	    Fputhash (build_string (name), Qsans_modifiers, hashtable);
+	    Fputhash (sym, Qsans_modifiers, hashtable);
+	  }
+      }
+
+      for (j = 1; j < keysyms_per_code; j++)
+	{
+	  if (keysym[j] != keysym[0] &&
+	      keysym[j] != NoSymbol)
+	    {
+	      char *name = XKeysymToString (keysym[j]);
+	      Lisp_Object sym = gtk_keysym_to_emacs_keysym (keysym[j], 0);
+	      if (name && NILP (Fgethash (sym, hashtable, Qnil)))
+		{
+		  Fputhash (build_string (name), Qt, hashtable);
+		  Fputhash (sym, Qt, hashtable);
+		}
+	    }
+	}
+    }
+}
+
+static const char *
+index_to_name (int indice)
+{
+  switch (indice)
+    {
+    case ShiftMapIndex:   return "ModShift";
+    case LockMapIndex:    return "ModLock";
+    case ControlMapIndex: return "ModControl";
+    case Mod1MapIndex:    return "Mod1";
+    case Mod2MapIndex:    return "Mod2";
+    case Mod3MapIndex:    return "Mod3";
+    case Mod4MapIndex:    return "Mod4";
+    case Mod5MapIndex:    return "Mod5";
+    default:              return "???";
+    }
+}
+
+/* Boy, I really wish C had local functions... */
+struct c_doesnt_have_closures   /* #### not yet used */
+{
+  int warned_about_overlapping_modifiers;
+  int warned_about_predefined_modifiers;
+  int warned_about_duplicate_modifiers;
+  int meta_bit;
+  int hyper_bit;
+  int super_bit;
+  int alt_bit;
+  int mode_bit;
+};
+
+static void
+gtk_reset_modifier_mapping (struct device *d)
+{
+  Display *display = GDK_DISPLAY ();
+  struct gtk_device *xd = DEVICE_GTK_DATA (d);
+  int modifier_index, modifier_key, column, mkpm;
+  int warned_about_overlapping_modifiers = 0;
+  /*  int warned_about_predefined_modifiers  = 0; */
+  /* int warned_about_duplicate_modifiers   = 0; */
+  int meta_bit  = 0;
+  int hyper_bit = 0;
+  int super_bit = 0;
+  int alt_bit   = 0;
+  int mode_bit  = 0;
+  XModifierKeymap *map = (XModifierKeymap *) xd->x_modifier_keymap;
+
+  xd->lock_interpretation = 0;
+
+  if (map)
+    XFreeModifiermap (map);
+
+  gtk_reset_key_mapping (d);
+
+  xd->x_modifier_keymap = map = XGetModifierMapping (display);
+
+  /* Boy, I really wish C had local functions...
+   */
+
+  /* The call to warn_when_safe must be on the same line as the string or
+     make-msgfile won't pick it up properly (the newline doesn't confuse
+     it, but the backslash does). */
+
+#define store_modifier(name,old)					   \
+    old = modifier_index;
+
+  mkpm = map->max_keypermod;
+  for (modifier_index = 0; modifier_index < 8; modifier_index++)
+    for (modifier_key = 0; modifier_key < mkpm; modifier_key++) {
+      KeySym last_sym = 0;
+      for (column = 0; column < 4; column += 2) {
+	KeyCode code = map->modifiermap[modifier_index * mkpm
+							  + modifier_key];
+	KeySym sym = (code ? XKeycodeToKeysym (display, code, column) : 0);
+	if (sym == last_sym) continue;
+	last_sym = sym;
+	switch (sym) {
+	case XK_Mode_switch:store_modifier ("Mode_switch", mode_bit); break;
+	case XK_Meta_L:     store_modifier ("Meta_L", meta_bit); break;
+	case XK_Meta_R:     store_modifier ("Meta_R", meta_bit); break;
+	case XK_Super_L:    store_modifier ("Super_L", super_bit); break;
+	case XK_Super_R:    store_modifier ("Super_R", super_bit); break;
+	case XK_Hyper_L:    store_modifier ("Hyper_L", hyper_bit); break;
+	case XK_Hyper_R:    store_modifier ("Hyper_R", hyper_bit); break;
+	case XK_Alt_L:      store_modifier ("Alt_L", alt_bit); break;
+	case XK_Alt_R:      store_modifier ("Alt_R", alt_bit); break;
+#if 0
+	case XK_Control_L:  check_modifier ("Control_L", ControlMask); break;
+	case XK_Control_R:  check_modifier ("Control_R", ControlMask); break;
+	case XK_Shift_L:    check_modifier ("Shift_L", ShiftMask); break;
+	case XK_Shift_R:    check_modifier ("Shift_R", ShiftMask); break;
+#endif
+	case XK_Shift_Lock: /* check_modifier ("Shift_Lock", LockMask); */
+	  xd->lock_interpretation = XK_Shift_Lock; break;
+	case XK_Caps_Lock:  /* check_modifier ("Caps_Lock", LockMask); */
+	  xd->lock_interpretation = XK_Caps_Lock; break;
+
+	/* It probably doesn't make any sense for a modifier bit to be
+	   assigned to a key that is not one of the above, but OpenWindows
+	   assigns modifier bits to a couple of random function keys for
+	   no reason that I can discern, so printing a warning here would
+	   be annoying. */
+	}
+      }
+    }
+#undef store_modifier
+#undef check_modifier
+#undef modwarn
+#undef modbarf
+
+  /* If there was no Meta key, then try using the Alt key instead.
+     If there is both a Meta key and an Alt key, then the Alt key
+     is not disturbed and remains an Alt key. */
+  if (! meta_bit && alt_bit)
+    meta_bit = alt_bit, alt_bit = 0;
+
+  /* mode_bit overrides everything, since it's processed down inside of
+     XLookupString() instead of by us.  If Meta and Mode_switch both
+     generate the same modifier bit (which is an error), then we don't
+     interpret that bit as Meta, because we can't make XLookupString()
+     not interpret it as Mode_switch; and interpreting it as both would
+     be totally wrong. */
+  if (mode_bit)
+    {
+      const char *warn = 0;
+      if      (mode_bit == meta_bit)  warn = "Meta",  meta_bit  = 0;
+      else if (mode_bit == hyper_bit) warn = "Hyper", hyper_bit = 0;
+      else if (mode_bit == super_bit) warn = "Super", super_bit = 0;
+      else if (mode_bit == alt_bit)   warn = "Alt",   alt_bit   = 0;
+      if (warn)
+	{
+	  warn_when_safe
+	    (Qkey_mapping, Qwarning,
+	     "XEmacs:  %s is being used for both Mode_switch and %s.",
+	     index_to_name (mode_bit), warn),
+	    warned_about_overlapping_modifiers = 1;
+	}
+    }
+#undef index_to_name
+
+  xd->MetaMask   = (meta_bit   ? (1 << meta_bit)  : 0);
+  xd->HyperMask  = (hyper_bit  ? (1 << hyper_bit) : 0);
+  xd->SuperMask  = (super_bit  ? (1 << super_bit) : 0);
+  xd->AltMask    = (alt_bit    ? (1 << alt_bit)   : 0);
+  xd->ModeMask   = (mode_bit   ? (1 << mode_bit)  : 0); /* unused */
+
+}
+
+void
+gtk_init_modifier_mapping (struct device *d)
+{
+  struct gtk_device *gd = DEVICE_GTK_DATA (d);
+  gd->x_keysym_map_hashtable = Qnil;
+  gd->x_keysym_map = NULL;
+  gd->x_modifier_keymap = NULL;
+  gtk_reset_modifier_mapping (d);
+}
+
+#if 0
+static int
+gtk_key_is_modifier_p (KeyCode keycode, struct device *d)
+{
+  struct gtk_device *xd = DEVICE_GTK_DATA (d);
+  KeySym *syms;
+  KeySym *map = (KeySym *) xd->x_keysym_map;
+  int i;
+
+  if (keycode < xd->x_keysym_map_min_code ||
+      keycode > xd->x_keysym_map_max_code)
+    return 0;
+
+  syms = &map [(keycode - xd->x_keysym_map_min_code) *
+	      xd->x_keysym_map_keysyms_per_code];
+  for (i = 0; i < xd->x_keysym_map_keysyms_per_code; i++)
+    if (IsModifierKey (syms [i]) ||
+	syms [i] == XK_Mode_switch) /* why doesn't IsModifierKey count this? */
+      return 1;
+  return 0;
+}
+#endif
+
+struct _quit_predicate_closure {
+  struct device *device;
+  Bool *critical;
+};
+
+static Bool
+quit_char_predicate (Display *display, XEvent *event, XPointer data)
+{
+  struct _quit_predicate_closure *cl = (struct _quit_predicate_closure *) data;
+  struct device *d = cl->device;
+  struct frame *f = NULL;
+  struct gtk_device *gd = DEVICE_GTK_DATA (d);
+  char c, quit_char;
+  Bool *critical = cl->critical;
+  Lisp_Object keysym;
+  GdkWindow *window = gdk_window_lookup (event->xany.window);
+  guint32 keycode = 0;
+  GdkEventKey gdk_event;
+
+  if (window)
+    f = gtk_any_window_to_frame (d, window);
+
+  if (critical)
+    *critical = False;
+
+  if ((event->type != KeyPress) ||
+      (! window) ||
+      (! f) ||
+      (event->xkey.state
+       & (gd->MetaMask | gd->HyperMask | gd->SuperMask | gd->AltMask)))
+    {
+      return 0;
+    }
+
+  {
+    char dummy[256];
+    XLookupString (&(event->xkey), dummy, 200, (KeySym *)&keycode, 0);
+  }
+
+  memset (&gdk_event, 0, sizeof (gdk_event));
+  gdk_event.type = GDK_KEY_PRESS;
+  gdk_event.window = window;
+  gdk_event.keyval = keycode;
+  gdk_event.state = event->xkey.state;
+
+  /* This duplicates some code that exists elsewhere, but it's relatively
+     fast and doesn't cons. */
+  keysym = gtk_to_emacs_keysym (d, &gdk_event, 1);
+  if (NILP (keysym)) return 0;
+  if (CHAR_OR_CHAR_INTP (keysym))
+    c = XCHAR_OR_CHAR_INT (keysym);
+  /* Highly doubtful that these are the quit character, but... */
+  else if (EQ (keysym, QKbackspace))	c = '\b';
+  else if (EQ (keysym, QKtab))		c = '\t';
+  else if (EQ (keysym, QKlinefeed))	c = '\n';
+  else if (EQ (keysym, QKreturn))	c = '\r';
+  else if (EQ (keysym, QKescape))	c = 27;
+  else if (EQ (keysym, QKspace))	c = ' ';
+  else if (EQ (keysym, QKdelete))	c = 127;
+  else return 0;
+
+  if (event->xkey.state & gd->MetaMask)     c |= 0x80;
+  if ((event->xkey.state & ControlMask) && !(c >= 'A' && c <= 'Z'))
+    c &= 0x1F;			/* unshifted control characters */
+  quit_char = CONSOLE_QUIT_CHAR (XCONSOLE (DEVICE_CONSOLE (d)));
+
+  if (c == quit_char)
+    return True;
+  /* If we've got Control-Shift-G instead of Control-G, that means
+     we have a critical_quit.  Caps_Lock is its own modifier, so it
+     won't cause ^G to act differently than before. */
+  if (event->xkey.state & ControlMask)  c &= 0x1F;
+  if (c == quit_char)
+    {
+      if (critical) *critical = True;
+      return True;
+    }
+  return False;
+}
+
+static void
+gtk_check_for_quit_char (struct device *d)
+{
+  XEvent event;
+  int queued;
+  Bool critical_quit = False;
+  struct _quit_predicate_closure closure;
+
+  XEventsQueued (GDK_DISPLAY (), QueuedAfterReading);
+
+  closure.device = d;
+  closure.critical = &critical_quit;
+
+  queued = XCheckIfEvent (GDK_DISPLAY (), &event, quit_char_predicate, (char *) &closure);
+
+  if (queued)
+    {
+      Vquit_flag = (critical_quit ? Qcritical : Qt);
+    }
+}