示例#1
0
文件: w32menu.c 项目: 0xAX/emacs
void
free_frame_menubar (struct frame *f)
{
  block_input ();

  {
    HMENU old = GetMenu (FRAME_W32_WINDOW (f));
    SetMenu (FRAME_W32_WINDOW (f), NULL);
    f->output_data.w32->menubar_widget = NULL;
    DestroyMenu (old);
  }

  unblock_input ();
}
示例#2
0
文件: w32menu.c 项目: 0xAX/emacs
void
x_activate_menubar (struct frame *f)
{
  set_frame_menubar (f, false, true);

  /* Lock out further menubar changes while active.  */
  f->output_data.w32->menubar_active = 1;

  /* Signal input thread to return from WM_INITMENU.  */
  complete_deferred_msg (FRAME_W32_WINDOW (f), WM_INITMENU, 0);
}
示例#3
0
/* Signal to the main thread that we have file notifications for it to
   process.  */
static void
send_notifications (BYTE *info, DWORD info_size, void *desc,
		    volatile int *terminate)
{
  int done = 0;
  struct frame *f = SELECTED_FRAME ();

  /* A single buffer is used to communicate all notifications to the
     main thread.  Since both the main thread and several watcher
     threads could be active at the same time, we use a critical area
     and an "in-use" flag to synchronize them.  A watcher thread can
     only put its notifications in the buffer if it acquires the
     critical area and finds the "in-use" flag reset.  The main thread
     resets the flag after it is done processing notifications.

     FIXME: is there a better way of dealing with this?  */
  while (!done && !*terminate)
    {
      enter_crit ();
      if (!notification_buffer_in_use)
	{
	  if (info_size)
	    memcpy (file_notifications, info,
		    min (info_size, sizeof (file_notifications)));
	  notifications_size = min (info_size, sizeof (file_notifications));
	  notifications_desc = desc;
	  /* If PostMessage fails, the message queue is full.  If that
	     happens, the last thing they will worry about is file
	     notifications.  So we effectively discard the
	     notification in that case.  */
	  if ((FRAME_TERMCAP_P (f)
	       /* We send the message to the main (a.k.a. "Lisp")
		  thread, where it will wake up MsgWaitForMultipleObjects
		  inside sys_select, causing it to report that there's
		  some keyboard input available.  This will in turn cause
		  w32_console_read_socket to be called, which will pick
		  up the file notifications.  */
	       && PostThreadMessage (dwMainThreadId, WM_EMACS_FILENOTIFY, 0, 0))
	      || (FRAME_W32_P (f)
		  && PostMessage (FRAME_W32_WINDOW (f),
				  WM_EMACS_FILENOTIFY, 0, 0))
	      /* When we are running in batch mode, there's no one to
		 send a message, so we just signal the data is
		 available and hope sys_select will be called soon and
		 will read the data.  */
	      || (FRAME_INITIAL_P (f) && noninteractive))
	    notification_buffer_in_use = 1;
	  done = 1;
	}
      leave_crit ();
      if (!done)
	Sleep (5);
    }
}
示例#4
0
/* Signal to the main thread that we have file notifications for it to
   process.  */
static void
send_notifications (struct notifications_set *ns)
{
  struct frame *f = SELECTED_FRAME ();

  /* We add the current notification set to the linked list.  Use the
     critical section to make sure only one thread will access the
     linked list. */
      enter_crit ();
  ns->next = notifications_set_head;
  ns->prev = notifications_set_head->prev;
  ns->prev->next = ns;
  notifications_set_head->prev = ns;
  leave_crit();

  /* If PostMessage fails, the message queue is full.  If that
     happens, the last thing they will worry about is file
     notifications.  So we effectively discard the notification in
     that case.  */
  if (FRAME_TERMCAP_P (f))
    /* We send the message to the main (a.k.a. "Lisp") thread, where
       it will wake up MsgWaitForMultipleObjects inside sys_select,
       causing it to report that there's some keyboard input
       available.  This will in turn cause w32_console_read_socket to
       be called, which will pick up the file notifications.  */
    PostThreadMessage (dwMainThreadId, WM_EMACS_FILENOTIFY, 0, 0);
  else if (FRAME_W32_P (f))
    PostMessage (FRAME_W32_WINDOW (f),
                 WM_EMACS_FILENOTIFY, 0, 0);
  /* When we are running in batch mode, there's no one to send a
     message, so we just signal the data is available and hope
     sys_select will be called soon and will read the data.  */
#if 0
  else if (FRAME_INITIAL_P (f) && noninteractive)
    ;
#endif
}
示例#5
0
文件: w32menu.c 项目: 0xAX/emacs
Lisp_Object
w32_menu_show (struct frame *f, int x, int y, int menuflags,
	       Lisp_Object title, const char **error)
{
  int i;
  int menu_item_selection;
  HMENU menu;
  POINT pos;
  widget_value *wv, *save_wv = 0, *first_wv = 0, *prev_wv = 0;
  widget_value **submenu_stack
    = (widget_value **) alloca (menu_items_used * sizeof (widget_value *));
  Lisp_Object *subprefix_stack
    = (Lisp_Object *) alloca (menu_items_used * word_size);
  int submenu_depth = 0;
  bool first_pane;

  *error = NULL;

  if (menu_items_n_panes == 0)
    return Qnil;

  if (menu_items_used <= MENU_ITEMS_PANE_LENGTH)
    {
      *error = "Empty menu";
      return Qnil;
    }

  block_input ();

  /* Create a tree of widget_value objects
     representing the panes and their items.  */
  wv = make_widget_value ("menu", NULL, true, Qnil);
  wv->button_type = BUTTON_TYPE_NONE;
  first_wv = wv;
  first_pane = true;

  /* Loop over all panes and items, filling in the tree.  */
  i = 0;
  while (i < menu_items_used)
    {
      if (EQ (AREF (menu_items, i), Qnil))
	{
	  submenu_stack[submenu_depth++] = save_wv;
	  save_wv = prev_wv;
	  prev_wv = 0;
	  first_pane = false;
	  i++;
	}
      else if (EQ (AREF (menu_items, i), Qlambda))
	{
	  prev_wv = save_wv;
	  save_wv = submenu_stack[--submenu_depth];
	  first_pane = false;
	  i++;
	}
      else if (EQ (AREF (menu_items, i), Qt)
	       && submenu_depth != 0)
	i += MENU_ITEMS_PANE_LENGTH;
      /* Ignore a nil in the item list.
	 It's meaningful only for dialog boxes.  */
      else if (EQ (AREF (menu_items, i), Qquote))
	i += 1;
      else if (EQ (AREF (menu_items, i), Qt))
	{
	  /* Create a new pane.  */
	  Lisp_Object pane_name, prefix;
	  const char *pane_string;
	  pane_name = AREF (menu_items, i + MENU_ITEMS_PANE_NAME);
	  prefix = AREF (menu_items, i + MENU_ITEMS_PANE_PREFIX);

	  if (STRINGP (pane_name))
	    {
	      if (unicode_append_menu)
		pane_name = ENCODE_UTF_8 (pane_name);
	      else if (STRING_MULTIBYTE (pane_name))
		pane_name = ENCODE_SYSTEM (pane_name);

	      ASET (menu_items, i + MENU_ITEMS_PANE_NAME, pane_name);
	    }

	  pane_string = (NILP (pane_name)
			 ? "" : SSDATA (pane_name));
	  /* If there is just one top-level pane, put all its items directly
	     under the top-level menu.  */
	  if (menu_items_n_panes == 1)
	    pane_string = "";

	  /* If the pane has a meaningful name,
	     make the pane a top-level menu item
	     with its items as a submenu beneath it.  */
	  if (!(menuflags & MENU_KEYMAPS) && strcmp (pane_string, ""))
	    {
	      wv = make_widget_value (pane_string, NULL, true, Qnil);
	      if (save_wv)
		save_wv->next = wv;
	      else
		first_wv->contents = wv;
	      if ((menuflags & MENU_KEYMAPS) && !NILP (prefix))
		wv->name++;
	      wv->button_type = BUTTON_TYPE_NONE;
	      save_wv = wv;
	      prev_wv = 0;
	    }
	  else if (first_pane)
	    {
	      save_wv = wv;
	      prev_wv = 0;
	    }
	  first_pane = false;
	  i += MENU_ITEMS_PANE_LENGTH;
	}
      else
	{
	  /* Create a new item within current pane.  */
	  Lisp_Object item_name, enable, descrip, def, type, selected, help;

	  item_name = AREF (menu_items, i + MENU_ITEMS_ITEM_NAME);
	  enable = AREF (menu_items, i + MENU_ITEMS_ITEM_ENABLE);
	  descrip = AREF (menu_items, i + MENU_ITEMS_ITEM_EQUIV_KEY);
	  def = AREF (menu_items, i + MENU_ITEMS_ITEM_DEFINITION);
	  type = AREF (menu_items, i + MENU_ITEMS_ITEM_TYPE);
	  selected = AREF (menu_items, i + MENU_ITEMS_ITEM_SELECTED);
          help = AREF (menu_items, i + MENU_ITEMS_ITEM_HELP);

          if (STRINGP (item_name))
	    {
	      if (unicode_append_menu)
		item_name = ENCODE_UTF_8 (item_name);
	      else if (STRING_MULTIBYTE (item_name))
		item_name = ENCODE_SYSTEM (item_name);

	      ASET (menu_items, i + MENU_ITEMS_ITEM_NAME, item_name);
	    }

	  if (STRINGP (descrip) && STRING_MULTIBYTE (descrip))
            {
	      descrip = ENCODE_SYSTEM (descrip);
	      ASET (menu_items, i + MENU_ITEMS_ITEM_EQUIV_KEY, descrip);
	    }

	  wv = make_widget_value (SSDATA (item_name), NULL, !NILP (enable),
				  STRINGP (help) ? help : Qnil);
	  if (prev_wv)
	    prev_wv->next = wv;
	  else
	    save_wv->contents = wv;
	  if (!NILP (descrip))
	    wv->key = SSDATA (descrip);
	  /* Use the contents index as call_data, since we are
             restricted to 16-bits.  */
	  wv->call_data = !NILP (def) ? (void *) (UINT_PTR) i : 0;

	  if (NILP (type))
	    wv->button_type = BUTTON_TYPE_NONE;
	  else if (EQ (type, QCtoggle))
	    wv->button_type = BUTTON_TYPE_TOGGLE;
	  else if (EQ (type, QCradio))
	    wv->button_type = BUTTON_TYPE_RADIO;
	  else
	    emacs_abort ();

	  wv->selected = !NILP (selected);

	  prev_wv = wv;

	  i += MENU_ITEMS_ITEM_LENGTH;
	}
    }

  /* Deal with the title, if it is non-nil.  */
  if (!NILP (title))
    {
      widget_value *wv_title;
      widget_value *wv_sep = make_widget_value ("--", NULL, false, Qnil);

      /* Maybe replace this separator with a bitmap or owner-draw item
	 so that it looks better.  Having two separators looks odd.  */
      wv_sep->next = first_wv->contents;

      if (unicode_append_menu)
	title = ENCODE_UTF_8 (title);
      else if (STRING_MULTIBYTE (title))
	title = ENCODE_SYSTEM (title);

      wv_title = make_widget_value (SSDATA (title), NULL, true, Qnil);
      wv_title->title = TRUE;
      wv_title->button_type = BUTTON_TYPE_NONE;
      wv_title->next = wv_sep;
      first_wv->contents = wv_title;
    }

  /* No selection has been chosen yet.  */
  menu_item_selection = 0;

  /* Actually create the menu.  */
  current_popup_menu = menu = CreatePopupMenu ();
  fill_in_menu (menu, first_wv->contents);

  /* Adjust coordinates to be root-window-relative.  */
  pos.x = x;
  pos.y = y;
  ClientToScreen (FRAME_W32_WINDOW (f), &pos);

  /* Display the menu.  */
  menu_item_selection = SendMessage (FRAME_W32_WINDOW (f),
				     WM_EMACS_TRACKPOPUPMENU,
				     (WPARAM)menu, (LPARAM)&pos);

  /* Clean up extraneous mouse events which might have been generated
     during the call. */
  discard_mouse_events ();
  FRAME_DISPLAY_INFO (f)->grabbed = 0;

  /* Free the widget_value objects we used to specify the contents.  */
  free_menubar_widget_value_tree (first_wv);

  DestroyMenu (menu);

  /* Free the owner-drawn and help-echo menu strings.  */
  w32_free_menu_strings (FRAME_W32_WINDOW (f));
  f->output_data.w32->menubar_active = 0;

  /* Find the selected item, and its pane, to return
     the proper value.  */
  if (menu_item_selection != 0)
    {
      Lisp_Object prefix, entry;

      prefix = entry = Qnil;
      i = 0;
      while (i < menu_items_used)
	{
	  if (EQ (AREF (menu_items, i), Qnil))
	    {
	      subprefix_stack[submenu_depth++] = prefix;
	      prefix = entry;
	      i++;
	    }
	  else if (EQ (AREF (menu_items, i), Qlambda))
	    {
	      prefix = subprefix_stack[--submenu_depth];
	      i++;
	    }
	  else if (EQ (AREF (menu_items, i), Qt))
	    {
	      prefix = AREF (menu_items, i + MENU_ITEMS_PANE_PREFIX);
	      i += MENU_ITEMS_PANE_LENGTH;
	    }
	  /* Ignore a nil in the item list.
	     It's meaningful only for dialog boxes.  */
	  else if (EQ (AREF (menu_items, i), Qquote))
	    i += 1;
	  else
	    {
	      entry = AREF (menu_items, i + MENU_ITEMS_ITEM_VALUE);
	      if (menu_item_selection == i)
		{
		  if (menuflags & MENU_KEYMAPS)
		    {
		      int j;

		      entry = Fcons (entry, Qnil);
		      if (!NILP (prefix))
			entry = Fcons (prefix, entry);
		      for (j = submenu_depth - 1; j >= 0; j--)
			if (!NILP (subprefix_stack[j]))
			  entry = Fcons (subprefix_stack[j], entry);
		    }
		  unblock_input ();
		  return entry;
		}
	      i += MENU_ITEMS_ITEM_LENGTH;
	    }
	}
    }
  else if (!(menuflags & MENU_FOR_CLICK))
    {
      unblock_input ();
      /* Make "Cancel" equivalent to C-g.  */
      Fsignal (Qquit, Qnil);
    }

  unblock_input ();
  return Qnil;
}
示例#6
0
文件: w32menu.c 项目: 0xAX/emacs
void
set_frame_menubar (struct frame *f, bool first_time, bool deep_p)
{
  HMENU menubar_widget = f->output_data.w32->menubar_widget;
  Lisp_Object items;
  widget_value *wv, *first_wv, *prev_wv = 0;
  int i, last_i;
  int *submenu_start, *submenu_end;
  int *submenu_top_level_items, *submenu_n_panes;

  /* We must not change the menubar when actually in use.  */
  if (f->output_data.w32->menubar_active)
    return;

  XSETFRAME (Vmenu_updating_frame, f);

  if (! menubar_widget)
    deep_p = true;

  if (deep_p)
    {
      /* Make a widget-value tree representing the entire menu trees.  */

      struct buffer *prev = current_buffer;
      Lisp_Object buffer;
      ptrdiff_t specpdl_count = SPECPDL_INDEX ();
      int previous_menu_items_used = f->menu_bar_items_used;
      Lisp_Object *previous_items
	= (Lisp_Object *) alloca (previous_menu_items_used
				  * word_size);

      /* If we are making a new widget, its contents are empty,
	 do always reinitialize them.  */
      if (! menubar_widget)
	previous_menu_items_used = 0;

      buffer = XWINDOW (FRAME_SELECTED_WINDOW (f))->contents;
      specbind (Qinhibit_quit, Qt);
      /* Don't let the debugger step into this code
	 because it is not reentrant.  */
      specbind (Qdebug_on_next_call, Qnil);

      record_unwind_save_match_data ();

      if (NILP (Voverriding_local_map_menu_flag))
	{
	  specbind (Qoverriding_terminal_local_map, Qnil);
	  specbind (Qoverriding_local_map, Qnil);
	}

      set_buffer_internal_1 (XBUFFER (buffer));

      /* Run the hooks.  */
      safe_run_hooks (Qactivate_menubar_hook);
      safe_run_hooks (Qmenu_bar_update_hook);
      fset_menu_bar_items (f, menu_bar_items (FRAME_MENU_BAR_ITEMS (f)));

      items = FRAME_MENU_BAR_ITEMS (f);

      /* Save the frame's previous menu bar contents data.  */
      if (previous_menu_items_used)
	memcpy (previous_items, XVECTOR (f->menu_bar_vector)->contents,
		previous_menu_items_used * word_size);

      /* Fill in menu_items with the current menu bar contents.
	 This can evaluate Lisp code.  */
      save_menu_items ();

      menu_items = f->menu_bar_vector;
      menu_items_allocated = VECTORP (menu_items) ? ASIZE (menu_items) : 0;
      submenu_start = (int *) alloca (ASIZE (items) * sizeof (int));
      submenu_end = (int *) alloca (ASIZE (items) * sizeof (int));
      submenu_n_panes = (int *) alloca (ASIZE (items) * sizeof (int));
      submenu_top_level_items = (int *) alloca (ASIZE (items) * sizeof (int));
      init_menu_items ();
      for (i = 0; i < ASIZE (items); i += 4)
	{
	  Lisp_Object key, string, maps;

	  last_i = i;

	  key = AREF (items, i);
	  string = AREF (items, i + 1);
	  maps = AREF (items, i + 2);
	  if (NILP (string))
	    break;

	  submenu_start[i] = menu_items_used;

	  menu_items_n_panes = 0;
	  submenu_top_level_items[i]
	    = parse_single_submenu (key, string, maps);
	  submenu_n_panes[i] = menu_items_n_panes;

	  submenu_end[i] = menu_items_used;
	}

      finish_menu_items ();

      /* Convert menu_items into widget_value trees
	 to display the menu.  This cannot evaluate Lisp code.  */

      wv = make_widget_value ("menubar", NULL, true, Qnil);
      wv->button_type = BUTTON_TYPE_NONE;
      first_wv = wv;

      for (i = 0; i < last_i; i += 4)
	{
	  menu_items_n_panes = submenu_n_panes[i];
	  wv = digest_single_submenu (submenu_start[i], submenu_end[i],
				      submenu_top_level_items[i]);
	  if (prev_wv)
	    prev_wv->next = wv;
	  else
	    first_wv->contents = wv;
	  /* Don't set wv->name here; GC during the loop might relocate it.  */
	  wv->enabled = true;
	  wv->button_type = BUTTON_TYPE_NONE;
	  prev_wv = wv;
	}

      set_buffer_internal_1 (prev);

      /* If there has been no change in the Lisp-level contents
	 of the menu bar, skip redisplaying it.  Just exit.  */

      for (i = 0; i < previous_menu_items_used; i++)
	if (menu_items_used == i
	    || (!EQ (previous_items[i], AREF (menu_items, i))))
	  break;
      if (i == menu_items_used && i == previous_menu_items_used && i != 0)
	{
	  free_menubar_widget_value_tree (first_wv);
	  discard_menu_items ();
          unbind_to (specpdl_count, Qnil);
	  return;
	}

      fset_menu_bar_vector (f, menu_items);
      f->menu_bar_items_used = menu_items_used;

      /* This undoes save_menu_items.  */
      unbind_to (specpdl_count, Qnil);

      /* Now GC cannot happen during the lifetime of the widget_value,
	 so it's safe to store data from a Lisp_String, as long as
	 local copies are made when the actual menu is created.
	 Windows takes care of this for normal string items, but
	 not for owner-drawn items or additional item-info.  */
      wv = first_wv->contents;
      for (i = 0; i < ASIZE (items); i += 4)
	{
	  Lisp_Object string;
	  string = AREF (items, i + 1);
	  if (NILP (string))
	    break;
	  wv->name = SSDATA (string);
	  update_submenu_strings (wv->contents);
	  wv = wv->next;
	}
    }
  else
    {
      /* Make a widget-value tree containing
	 just the top level menu bar strings.  */

      wv = make_widget_value ("menubar", NULL, true, Qnil);
      wv->button_type = BUTTON_TYPE_NONE;
      first_wv = wv;

      items = FRAME_MENU_BAR_ITEMS (f);
      for (i = 0; i < ASIZE (items); i += 4)
	{
	  Lisp_Object string;

	  string = AREF (items, i + 1);
	  if (NILP (string))
	    break;

	  wv = make_widget_value (SSDATA (string), NULL, true, Qnil);
	  wv->button_type = BUTTON_TYPE_NONE;
	  /* This prevents lwlib from assuming this
	     menu item is really supposed to be empty.  */
	  /* The EMACS_INT cast avoids a warning.
	     This value just has to be different from small integers.  */
	  wv->call_data = (void *) (EMACS_INT) (-1);

	  if (prev_wv)
	    prev_wv->next = wv;
	  else
	    first_wv->contents = wv;
	  prev_wv = wv;
	}

      /* Forget what we thought we knew about what is in the
	 detailed contents of the menu bar menus.
	 Changing the top level always destroys the contents.  */
      f->menu_bar_items_used = 0;
    }

  /* Create or update the menu bar widget.  */

  block_input ();

  if (menubar_widget)
    {
      /* Empty current menubar, rather than creating a fresh one.  */
      while (DeleteMenu (menubar_widget, 0, MF_BYPOSITION))
	;
    }
  else
    {
      menubar_widget = CreateMenu ();
    }
  fill_in_menu (menubar_widget, first_wv->contents);

  free_menubar_widget_value_tree (first_wv);

  {
    HMENU old_widget = f->output_data.w32->menubar_widget;

    f->output_data.w32->menubar_widget = menubar_widget;
    SetMenu (FRAME_W32_WINDOW (f), f->output_data.w32->menubar_widget);
    /* Causes flicker when menu bar is updated
    DrawMenuBar (FRAME_W32_WINDOW (f)); */

    /* Force the window size to be recomputed so that the frame's text
       area remains the same, if menubar has just been created.  */
    if (old_widget == NULL)
      {
	windows_or_buffers_changed = 23;
	adjust_frame_size (f, -1, -1, 2, false, Qmenu_bar_lines);
      }
  }

  unblock_input ();
}
示例#7
0
文件: w32menu.c 项目: 0xAX/emacs
void
menubar_selection_callback (struct frame *f, void * client_data)
{
  Lisp_Object prefix, entry;
  Lisp_Object vector;
  Lisp_Object *subprefix_stack;
  int submenu_depth = 0;
  int i;

  if (!f)
    return;
  entry = Qnil;
  subprefix_stack = (Lisp_Object *) alloca (f->menu_bar_items_used * word_size);
  vector = f->menu_bar_vector;
  prefix = Qnil;
  i = 0;
  while (i < f->menu_bar_items_used)
    {
      if (EQ (AREF (vector, i), Qnil))
	{
	  subprefix_stack[submenu_depth++] = prefix;
	  prefix = entry;
	  i++;
	}
      else if (EQ (AREF (vector, i), Qlambda))
	{
	  prefix = subprefix_stack[--submenu_depth];
	  i++;
	}
      else if (EQ (AREF (vector, i), Qt))
	{
	  prefix = AREF (vector, i + MENU_ITEMS_PANE_PREFIX);
	  i += MENU_ITEMS_PANE_LENGTH;
	}
      else
	{
	  entry = AREF (vector, i + MENU_ITEMS_ITEM_VALUE);
	  /* The UINT_PTR cast avoids a warning.  There's no problem
	     as long as pointers have enough bits to hold small integers.  */
	  if ((int) (UINT_PTR) client_data == i)
	    {
	      int j;
	      struct input_event buf;
	      Lisp_Object frame;
	      EVENT_INIT (buf);

	      XSETFRAME (frame, f);
	      buf.kind = MENU_BAR_EVENT;
	      buf.frame_or_window = frame;
	      buf.arg = frame;
	      kbd_buffer_store_event (&buf);

	      for (j = 0; j < submenu_depth; j++)
		if (!NILP (subprefix_stack[j]))
		  {
		    buf.kind = MENU_BAR_EVENT;
		    buf.frame_or_window = frame;
		    buf.arg = subprefix_stack[j];
		    kbd_buffer_store_event (&buf);
		  }

	      if (!NILP (prefix))
		{
		  buf.kind = MENU_BAR_EVENT;
		  buf.frame_or_window = frame;
		  buf.arg = prefix;
		  kbd_buffer_store_event (&buf);
		}

	      buf.kind = MENU_BAR_EVENT;
	      buf.frame_or_window = frame;
	      buf.arg = entry;
	      /* Free memory used by owner-drawn and help-echo strings.  */
	      w32_free_menu_strings (FRAME_W32_WINDOW (f));
	      kbd_buffer_store_event (&buf);

	      f->output_data.w32->menubar_active = 0;
	      return;
	    }
	  i += MENU_ITEMS_ITEM_LENGTH;
	}
    }
  /* Free memory used by owner-drawn and help-echo strings.  */
  w32_free_menu_strings (FRAME_W32_WINDOW (f));
  f->output_data.w32->menubar_active = 0;
}
示例#8
0
文件: w32menu.c 项目: 0xAX/emacs
static Lisp_Object
simple_dialog_show (struct frame *f, Lisp_Object contents, Lisp_Object header)
{
  int answer;
  UINT type;
  Lisp_Object lispy_answer = Qnil, temp = XCAR (contents);

  type = MB_YESNO;

  /* Since we only handle Yes/No dialogs, and we already checked
     is_simple_dialog, we don't need to worry about checking contents
     to see what type of dialog to use.  */

  /* Use Unicode if possible, so any language can be displayed.  */
  if (unicode_message_box)
    {
      WCHAR *text;
      const WCHAR *title;
      USE_SAFE_ALLOCA;

      if (STRINGP (temp))
	{
	  char *utf8_text = SSDATA (ENCODE_UTF_8 (temp));
	  /* Be pessimistic about the number of characters needed.
	     Remember characters outside the BMP will take more than
	     one utf16 word, so we cannot simply use the character
	     length of temp.  */
	  int utf8_len = strlen (utf8_text);
	  text = SAFE_ALLOCA ((utf8_len + 1) * sizeof (WCHAR));
	  utf8to16 ((unsigned char *)utf8_text, utf8_len, text);
	}
      else
	{
	  text = (WCHAR *)L"";
	}

      if (NILP (header))
	{
	  title = L"Question";
	  type |= MB_ICONQUESTION;
	}
      else
	{
	  title = L"Information";
	  type |= MB_ICONINFORMATION;
	}

      answer = unicode_message_box (FRAME_W32_WINDOW (f), text, title, type);
      SAFE_FREE ();
    }
  else
    {
      const char *text, *title;

      /* Fall back on ANSI message box, but at least use system
	 encoding so questions representable by the system codepage
	 are encoded properly.  */
      if (STRINGP (temp))
	text = SSDATA (ENCODE_SYSTEM (temp));
      else
	text = "";

      if (NILP (header))
	{
	  title = "Question";
	  type |= MB_ICONQUESTION;
	}
      else
	{
	  title = "Information";
	  type |= MB_ICONINFORMATION;
	}

      answer = MessageBox (FRAME_W32_WINDOW (f), text, title, type);
    }

  if (answer == IDYES)
    lispy_answer = build_string ("Yes");
  else if (answer == IDNO)
    lispy_answer = build_string ("No");
  else
    Fsignal (Qquit, Qnil);

  for (temp = XCDR (contents); CONSP (temp); temp = XCDR (temp))
    {
      Lisp_Object item, name, value;
      item = XCAR (temp);
      if (CONSP (item))
	{
	  name = XCAR (item);
	  value = XCDR (item);
	}
      else
	{
	  name = item;
	  value = Qnil;
	}

      if (!NILP (Fstring_equal (name, lispy_answer)))
	{
	  return value;
	}
    }
  Fsignal (Qquit, Qnil);
  return Qnil;
}