(c-guess-basic-syntax): Move CASE 19 to a different place, correctly to
[emacs.git] / src / termhooks.h
blobb147f6ed0a1da2088fb48d3ce37eca80d24295b6
1 /* Parameters and display hooks for terminal devices.
3 Copyright (C) 1985-1986, 1993-1994, 2001-2011 Free Software Foundation, Inc.
5 This file is part of GNU Emacs.
7 GNU Emacs is free software: you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation, either version 3 of the License, or
10 (at your option) any later version.
12 GNU Emacs is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
21 /* Miscellanea. */
23 struct glyph;
24 struct frame;
27 enum scroll_bar_part {
28 scroll_bar_above_handle,
29 scroll_bar_handle,
30 scroll_bar_below_handle,
31 scroll_bar_up_arrow,
32 scroll_bar_down_arrow,
33 scroll_bar_to_top,
34 scroll_bar_to_bottom,
35 scroll_bar_end_scroll,
36 scroll_bar_move_ratio
39 /* If the value of the frame parameter changed, whis hook is called.
40 For example, if going from fullscreen to not fullscreen this hook
41 may do something OS dependent, like extended window manager hints on X11. */
42 extern void (*fullscreen_hook) (struct frame *f);
45 /* Input queue declarations and hooks. */
47 enum event_kind
49 NO_EVENT, /* nothing happened. This should never
50 actually appear in the event queue. */
52 ASCII_KEYSTROKE_EVENT, /* The ASCII code is in .code, perhaps
53 with modifiers applied.
54 .modifiers holds the state of the
55 modifier keys.
56 .frame_or_window is the frame in
57 which the key was typed.
58 .timestamp gives a timestamp (in
59 milliseconds) for the keystroke. */
60 MULTIBYTE_CHAR_KEYSTROKE_EVENT, /* The multibyte char code is in .code,
61 perhaps with modifiers applied.
62 The others are the same as
63 ASCII_KEYSTROKE_EVENT. */
64 NON_ASCII_KEYSTROKE_EVENT, /* .code is a number identifying the
65 function key. A code N represents
66 a key whose name is
67 function_key_names[N]; function_key_names
68 is a table in keyboard.c to which you
69 should feel free to add missing keys.
70 .modifiers holds the state of the
71 modifier keys.
72 .frame_or_window is the frame in
73 which the key was typed.
74 .timestamp gives a timestamp (in
75 milliseconds) for the keystroke. */
76 TIMER_EVENT, /* A timer fired. */
77 MOUSE_CLICK_EVENT, /* The button number is in .code; it must
78 be >= 0 and < NUM_MOUSE_BUTTONS, defined
79 below.
80 .modifiers holds the state of the
81 modifier keys.
82 .x and .y give the mouse position,
83 in characters, within the window.
84 .frame_or_window gives the frame
85 the mouse click occurred in.
86 .timestamp gives a timestamp (in
87 milliseconds) for the click. */
88 WHEEL_EVENT, /* A wheel event is generated by a
89 wheel on a mouse (e.g., MS
90 Intellimouse).
91 .modifiers holds the rotate
92 direction (up or down), and the
93 state of the modifier keys.
94 .x and .y give the mouse position,
95 in characters, within the window.
96 .frame_or_window gives the frame
97 the wheel event occurred in.
98 .timestamp gives a timestamp (in
99 milliseconds) for the event. */
100 HORIZ_WHEEL_EVENT, /* A wheel event generated by a second
101 horizontal wheel that is present on some
102 mice. See WHEEL_EVENT. */
103 #if defined (WINDOWSNT)
104 LANGUAGE_CHANGE_EVENT, /* A LANGUAGE_CHANGE_EVENT is
105 generated on WINDOWSNT or Mac OS
106 when the keyboard layout or input
107 language is changed by the
108 user. */
109 #endif
110 SCROLL_BAR_CLICK_EVENT, /* .code gives the number of the mouse button
111 that was clicked.
112 .modifiers holds the state of the modifier
113 keys.
114 .part is a lisp symbol indicating which
115 part of the scroll bar got clicked.
116 .x gives the distance from the start of the
117 scroll bar of the click; .y gives the total
118 length of the scroll bar.
119 .frame_or_window gives the window
120 whose scroll bar was clicked in.
121 .timestamp gives a timestamp (in
122 milliseconds) for the click. */
123 SELECTION_REQUEST_EVENT, /* Another X client wants a selection from us.
124 See `struct selection_input_event'. */
125 SELECTION_CLEAR_EVENT, /* Another X client cleared our selection. */
126 BUFFER_SWITCH_EVENT, /* A process filter has switched buffers. */
127 DELETE_WINDOW_EVENT, /* An X client said "delete this window". */
128 MENU_BAR_EVENT, /* An event generated by the menu bar.
129 The frame_or_window field's cdr holds the
130 Lisp-level event value.
131 (Only the toolkit version uses these.) */
132 ICONIFY_EVENT, /* An X client iconified this window. */
133 DEICONIFY_EVENT, /* An X client deiconified this window. */
134 MENU_BAR_ACTIVATE_EVENT, /* A button press in the menu bar
135 (toolkit version only). */
136 DRAG_N_DROP_EVENT, /* A drag-n-drop event is generated when
137 files selected outside of Emacs are dropped
138 onto an Emacs window.
139 .modifiers holds the state of the
140 modifier keys.
141 .x and .y give the mouse position,
142 in characters, within the window.
143 .frame_or_window is the frame in
144 which the drop was made.
145 .arg is a platform-dependent
146 representation of the dropped items.
147 .timestamp gives a timestamp (in
148 milliseconds) for the click. */
149 USER_SIGNAL_EVENT, /* A user signal.
150 code is a number identifying it,
151 index into lispy_user_signals. */
153 /* Help events. Member `frame_or_window' of the input_event is the
154 frame on which the event occurred, and member `arg' contains
155 the help to show. */
156 HELP_EVENT,
158 /* An event from a tool-bar. Member `arg' of the input event
159 contains the tool-bar item selected. If `frame_or_window'
160 and `arg' are equal, this is a prefix event. */
161 TOOL_BAR_EVENT,
163 /* Queued from XTread_socket on FocusIn events. Translated into
164 `switch-frame' events in kbd_buffer_get_event, if necessary. */
165 FOCUS_IN_EVENT,
167 /* Generated when mouse moves over window not currently selected. */
168 SELECT_WINDOW_EVENT,
170 /* Queued from XTread_socket when session manager sends
171 save yourself before shutdown. */
172 SAVE_SESSION_EVENT
174 #ifdef HAVE_GPM
175 , GPM_CLICK_EVENT
176 #endif
178 #ifdef HAVE_DBUS
179 , DBUS_EVENT
180 #endif
182 , CONFIG_CHANGED_EVENT
184 #ifdef WINDOWSNT
185 /* Generated when an APPCOMMAND event is received, in response to
186 Multimedia or Internet buttons on some keyboards.
187 Such keys are available as normal function keys on X through the
188 Xkeyboard extension.
189 On Windows, some of them get mapped to normal function key events,
190 but others need to be handled by APPCOMMAND. Handling them all as
191 APPCOMMAND events means they can be disabled
192 (w32-pass-multimedia-buttons-to-system), important on Windows since
193 the system never sees these keys if Emacs claims to handle them.
194 On X, the window manager seems to grab the keys it wants
195 first, so this is not a problem there. */
196 , MULTIMEDIA_KEY_EVENT
197 #endif
199 #ifdef HAVE_NS
200 /* Generated when native multi-keystroke input method is used to modify
201 tentative or indicative text display. */
202 , NS_TEXT_EVENT
203 /* Non-key system events (e.g. application menu events) */
204 , NS_NONKEY_EVENT
205 #endif
209 /* If a struct input_event has a kind which is SELECTION_REQUEST_EVENT
210 or SELECTION_CLEAR_EVENT, then its contents are really described
211 by `struct selection_input_event'; see xterm.h. */
213 /* The keyboard input buffer is an array of these structures. Each one
214 represents some sort of input event - a keystroke, a mouse click, or
215 a window system event. These get turned into their lispy forms when
216 they are removed from the event queue. */
218 struct input_event
220 /* What kind of event was this? */
221 enum event_kind kind;
223 /* For an ASCII_KEYSTROKE_EVENT and MULTIBYTE_CHAR_KEYSTROKE_EVENT,
224 this is the character.
225 For a NON_ASCII_KEYSTROKE_EVENT, this is the keysym code.
226 For a mouse event, this is the button number.
227 For a HELP_EVENT, this is the position within the object
228 (stored in ARG below) where the help was found. */
229 /* In WindowsNT, for a mouse wheel event, this is the delta. */
230 EMACS_INT code;
231 enum scroll_bar_part part;
233 int modifiers; /* See enum below for interpretation. */
235 Lisp_Object x, y;
236 unsigned long timestamp;
238 /* This is padding just to put the frame_or_window field
239 past the size of struct selection_input_event. */
240 int *padding[2];
242 /* This field is copied into a vector while the event is in the queue,
243 so that garbage collections won't kill it. */
244 /* In a menu_bar_event, this is a cons cell whose car is the frame
245 and whose cdr is the Lisp object that is the event's value. */
246 /* This field is last so that struct selection_input_event
247 does not overlap with it. */
248 Lisp_Object frame_or_window;
250 /* Additional event argument. This is used for TOOL_BAR_EVENTs and
251 HELP_EVENTs and avoids calling Fcons during signal handling. */
252 Lisp_Object arg;
255 #define EVENT_INIT(event) memset (&(event), 0, sizeof (struct input_event))
257 /* Bits in the modifiers member of the input_event structure.
258 Note that reorder_modifiers assumes that the bits are in canonical
259 order.
261 The modifiers applied to mouse clicks are rather ornate. The
262 window-system-specific code should store mouse clicks with
263 up_modifier or down_modifier set. Having an explicit down modifier
264 simplifies some of window-system-independent code; without it, the
265 code would have to recognize down events by checking if the event
266 is a mouse click lacking the click and drag modifiers.
268 The window-system independent code turns all up_modifier events
269 bits into drag_modifier, click_modifier, double_modifier, or
270 triple_modifier events. The click_modifier has no written
271 representation in the names of the symbols used as event heads,
272 but it does appear in the Qevent_symbol_components property of the
273 event heads. */
274 enum {
275 up_modifier = 1, /* Only used on mouse buttons - always
276 turned into a click or a drag modifier
277 before lisp code sees the event. */
278 down_modifier = 2, /* Only used on mouse buttons. */
279 drag_modifier = 4, /* This is never used in the event
280 queue; it's only used internally by
281 the window-system-independent code. */
282 click_modifier= 8, /* See drag_modifier. */
283 double_modifier= 16, /* See drag_modifier. */
284 triple_modifier= 32, /* See drag_modifier. */
286 /* The next four modifier bits are used also in keyboard events at
287 the Lisp level.
289 It's probably not the greatest idea to use the 2^23 bit for any
290 modifier. It may or may not be the sign bit, depending on
291 VALBITS, so using it to represent a modifier key means that
292 characters thus modified have different integer equivalents
293 depending on the architecture they're running on. Oh, and
294 applying XINT to a character whose 2^23 bit is set sign-extends
295 it, so you get a bunch of bits in the mask you didn't want.
297 The CHAR_ macros are defined in lisp.h. */
298 alt_modifier = CHAR_ALT, /* Under X, the XK_Alt_[LR] keysyms. */
299 super_modifier= CHAR_SUPER, /* Under X, the XK_Super_[LR] keysyms. */
300 hyper_modifier= CHAR_HYPER, /* Under X, the XK_Hyper_[LR] keysyms. */
301 shift_modifier= CHAR_SHIFT,
302 ctrl_modifier = CHAR_CTL,
303 meta_modifier = CHAR_META /* Under X, the XK_Meta_[LR] keysyms. */
306 #ifdef HAVE_GPM
307 #include <gpm.h>
308 extern int handle_one_term_event (struct tty_display_info *, Gpm_Event *, struct input_event *);
309 extern void term_mouse_moveto (int, int);
311 /* The device for which we have enabled gpm support. */
312 extern struct tty_display_info *gpm_tty;
313 #endif
316 struct ns_display_info;
317 struct x_display_info;
318 struct w32_display_info;
320 /* Terminal-local parameters. */
321 struct terminal
323 /* The first two fields are really the header of a vector */
324 /* The terminal code does not refer to them. */
325 EMACS_UINT size;
326 struct Lisp_Vector *vec_next;
328 /* Parameter alist of this terminal. */
329 Lisp_Object param_alist;
331 /* List of charsets supported by the terminal. It is set by
332 Fset_terminal_coding_system_internal along with
333 the member terminal_coding. */
334 Lisp_Object charset_list;
336 /* All fields before `next_terminal' should be Lisp_Object and are traced
337 by the GC. All fields afterwards are ignored by the GC. */
339 /* Chain of all terminal devices. */
340 struct terminal *next_terminal;
342 /* Unique id for this terminal device. */
343 int id;
345 /* The number of frames that are on this terminal. */
346 int reference_count;
348 /* The type of the terminal device. */
349 enum output_method type;
351 /* The name of the terminal device. Do not use this to uniquely
352 identify a terminal; the same device may be opened multiple
353 times. */
354 char *name;
356 /* The terminal's keyboard object. */
357 struct kboard *kboard;
359 #ifdef HAVE_WINDOW_SYSTEM
360 /* Cache of images. */
361 struct image_cache *image_cache;
362 #endif /* HAVE_WINDOW_SYSTEM */
364 /* Device-type dependent data shared amongst all frames on this terminal. */
365 union display_info
367 struct tty_display_info *tty; /* termchar.h */
368 struct x_display_info *x; /* xterm.h */
369 struct w32_display_info *w32; /* w32term.h */
370 struct ns_display_info *ns; /* nsterm.h */
371 } display_info;
374 /* Coding-system to be used for encoding terminal output. This
375 structure contains information of a coding-system specified by
376 the function `set-terminal-coding-system'. Also see
377 `safe_terminal_coding' in coding.h. */
378 struct coding_system *terminal_coding;
380 /* Coding-system of what is sent from terminal keyboard. This
381 structure contains information of a coding-system specified by
382 the function `set-keyboard-coding-system'. */
383 struct coding_system *keyboard_coding;
385 /* Terminal characteristics. */
386 /* XXX Are these really used on non-termcap displays? */
388 int must_write_spaces; /* Nonzero means spaces in the text must
389 actually be output; can't just skip over
390 some columns to leave them blank. */
391 int fast_clear_end_of_line; /* Nonzero means terminal has a `ce' string */
393 int line_ins_del_ok; /* Terminal can insert and delete lines */
394 int char_ins_del_ok; /* Terminal can insert and delete chars */
395 int scroll_region_ok; /* Terminal supports setting the scroll
396 window */
397 int scroll_region_cost; /* Cost of setting the scroll window,
398 measured in characters. */
399 int memory_below_frame; /* Terminal remembers lines scrolled
400 off bottom */
402 #if 0 /* These are not used anywhere. */
403 /* EMACS_INT baud_rate; */ /* Output speed in baud */
404 int min_padding_speed; /* Speed below which no padding necessary. */
405 int dont_calculate_costs; /* Nonzero means don't bother computing
406 various cost tables; we won't use them. */
407 #endif
410 /* Window-based redisplay interface for this device (0 for tty
411 devices). */
412 struct redisplay_interface *rif;
414 /* Frame-based redisplay interface. */
416 /* Text display hooks. */
418 void (*cursor_to_hook) (struct frame *f, int vpos, int hpos);
419 void (*raw_cursor_to_hook) (struct frame *, int, int);
421 void (*clear_to_end_hook) (struct frame *);
422 void (*clear_frame_hook) (struct frame *);
423 void (*clear_end_of_line_hook) (struct frame *, int);
425 void (*ins_del_lines_hook) (struct frame *f, int, int);
427 void (*insert_glyphs_hook) (struct frame *f, struct glyph *s, int n);
428 void (*write_glyphs_hook) (struct frame *f, struct glyph *s, int n);
429 void (*delete_glyphs_hook) (struct frame *, int);
431 void (*ring_bell_hook) (struct frame *f);
432 void (*toggle_invisible_pointer_hook) (struct frame *f, int invisible);
434 void (*reset_terminal_modes_hook) (struct terminal *);
435 void (*set_terminal_modes_hook) (struct terminal *);
437 void (*update_begin_hook) (struct frame *);
438 void (*update_end_hook) (struct frame *);
439 void (*set_terminal_window_hook) (struct frame *, int);
441 /* Multi-frame and mouse support hooks. */
443 /* Return the current position of the mouse.
445 Set *f to the frame the mouse is in, or zero if the mouse is in no
446 Emacs frame. If it is set to zero, all the other arguments are
447 garbage.
449 If the motion started in a scroll bar, set *bar_window to the
450 scroll bar's window, *part to the part the mouse is currently over,
451 *x to the position of the mouse along the scroll bar, and *y to the
452 overall length of the scroll bar.
454 Otherwise, set *bar_window to Qnil, and *x and *y to the column and
455 row of the character cell the mouse is over.
457 Set *time to the time the mouse was at the returned position.
459 This should clear mouse_moved until the next motion
460 event arrives. */
461 void (*mouse_position_hook) (struct frame **f, int,
462 Lisp_Object *bar_window,
463 enum scroll_bar_part *part,
464 Lisp_Object *x,
465 Lisp_Object *y,
466 unsigned long *time);
468 /* The window system handling code should set this if the mouse has
469 moved since the last call to the mouse_position_hook. Calling that
470 hook should clear this. */
471 int mouse_moved;
473 /* When a frame's focus redirection is changed, this hook tells the
474 window system code to re-decide where to put the highlight. Under
475 X, this means that Emacs lies about where the focus is. */
476 void (*frame_rehighlight_hook) (struct frame *);
478 /* If we're displaying frames using a window system that can stack
479 frames on top of each other, this hook allows you to bring a frame
480 to the front, or bury it behind all the other windows. If this
481 hook is zero, that means the terminal we're displaying on doesn't
482 support overlapping frames, so there's no need to raise or lower
483 anything.
485 If RAISE is non-zero, F is brought to the front, before all other
486 windows. If RAISE is zero, F is sent to the back, behind all other
487 windows. */
488 void (*frame_raise_lower_hook) (struct frame *f, int raise);
490 /* If the value of the frame parameter changed, whis hook is called.
491 For example, if going from fullscreen to not fullscreen this hook
492 may do something OS dependent, like extended window manager hints on X11. */
493 void (*fullscreen_hook) (struct frame *f);
496 /* Scroll bar hooks. */
498 /* The representation of scroll bars is determined by the code which
499 implements them, except for one thing: they must be represented by
500 lisp objects. This allows us to place references to them in
501 Lisp_Windows without worrying about those references becoming
502 dangling references when the scroll bar is destroyed.
504 The window-system-independent portion of Emacs just refers to
505 scroll bars via their windows, and never looks inside the scroll bar
506 representation; it always uses hook functions to do all the
507 scroll bar manipulation it needs.
509 The `vertical_scroll_bar' field of a Lisp_Window refers to that
510 window's scroll bar, or is nil if the window doesn't have a
511 scroll bar.
513 The `scroll_bars' and `condemned_scroll_bars' fields of a Lisp_Frame
514 are free for use by the scroll bar implementation in any way it sees
515 fit. They are marked by the garbage collector. */
518 /* Set the vertical scroll bar for WINDOW to have its upper left corner
519 at (TOP, LEFT), and be LENGTH rows high. Set its handle to
520 indicate that we are displaying PORTION characters out of a total
521 of WHOLE characters, starting at POSITION. If WINDOW doesn't yet
522 have a scroll bar, create one for it. */
523 void (*set_vertical_scroll_bar_hook) (struct window *window,
524 int portion, int whole,
525 int position);
528 /* The following three hooks are used when we're doing a thorough
529 redisplay of the frame. We don't explicitly know which scroll bars
530 are going to be deleted, because keeping track of when windows go
531 away is a real pain - can you say set-window-configuration?
532 Instead, we just assert at the beginning of redisplay that *all*
533 scroll bars are to be removed, and then save scroll bars from the
534 fiery pit when we actually redisplay their window. */
536 /* Arrange for all scroll bars on FRAME to be removed at the next call
537 to `*judge_scroll_bars_hook'. A scroll bar may be spared if
538 `*redeem_scroll_bar_hook' is applied to its window before the judgement.
540 This should be applied to each frame each time its window tree is
541 redisplayed, even if it is not displaying scroll bars at the moment;
542 if the HAS_SCROLL_BARS flag has just been turned off, only calling
543 this and the judge_scroll_bars_hook will get rid of them.
545 If non-zero, this hook should be safe to apply to any frame,
546 whether or not it can support scroll bars, and whether or not it is
547 currently displaying them. */
548 void (*condemn_scroll_bars_hook) (struct frame *frame);
550 /* Unmark WINDOW's scroll bar for deletion in this judgement cycle.
551 Note that it's okay to redeem a scroll bar that is not condemned. */
552 void (*redeem_scroll_bar_hook) (struct window *window);
554 /* Remove all scroll bars on FRAME that haven't been saved since the
555 last call to `*condemn_scroll_bars_hook'.
557 This should be applied to each frame after each time its window
558 tree is redisplayed, even if it is not displaying scroll bars at the
559 moment; if the HAS_SCROLL_BARS flag has just been turned off, only
560 calling this and condemn_scroll_bars_hook will get rid of them.
562 If non-zero, this hook should be safe to apply to any frame,
563 whether or not it can support scroll bars, and whether or not it is
564 currently displaying them. */
565 void (*judge_scroll_bars_hook) (struct frame *FRAME);
568 /* Called to read input events.
570 TERMINAL indicates which terminal device to read from. Input
571 events should be read into BUF, the size of which is given in
572 SIZE. EXPECTED is non-zero if the caller suspects that new input
573 is available.
575 A positive return value indicates that that many input events
576 where read into BUF.
577 Zero means no events were immediately available.
578 A value of -1 means a transient read error, while -2 indicates
579 that the device was closed (hangup), and it should be deleted.
581 XXX Please note that a non-zero value of EXPECTED only means that
582 there is available input on at least one of the currently opened
583 terminal devices -- but not necessarily on this device.
584 Therefore, in most cases EXPECTED should be simply ignored.
586 XXX This documentation needs to be updated. */
587 int (*read_socket_hook) (struct terminal *terminal,
588 int expected,
589 struct input_event *hold_quit);
591 /* Called when a frame's display becomes entirely up to date. */
592 void (*frame_up_to_date_hook) (struct frame *);
595 /* Called to delete the device-specific portions of a frame that is
596 on this terminal device. */
597 void (*delete_frame_hook) (struct frame *);
599 /* Called after the last frame on this terminal is deleted, or when
600 the display device was closed (hangup).
602 If this is NULL, then the generic delete_terminal is called
603 instead. Otherwise the hook must call delete_terminal itself.
605 The hook must check for and close any live frames that are still
606 on the terminal. delete_frame ensures that there are no live
607 frames on the terminal when it calls this hook, so infinite
608 recursion is prevented. */
609 void (*delete_terminal_hook) (struct terminal *);
613 /* Chain of all terminal devices currently in use. */
614 extern struct terminal *terminal_list;
616 #define FRAME_MUST_WRITE_SPACES(f) ((f)->terminal->must_write_spaces)
617 #define FRAME_FAST_CLEAR_END_OF_LINE(f) ((f)->terminal->fast_clear_end_of_line)
618 #define FRAME_LINE_INS_DEL_OK(f) ((f)->terminal->line_ins_del_ok)
619 #define FRAME_CHAR_INS_DEL_OK(f) ((f)->terminal->char_ins_del_ok)
620 #define FRAME_SCROLL_REGION_OK(f) ((f)->terminal->scroll_region_ok)
621 #define FRAME_SCROLL_REGION_COST(f) ((f)->terminal->scroll_region_cost)
622 #define FRAME_MEMORY_BELOW_FRAME(f) ((f)->terminal->memory_below_frame)
624 #define FRAME_TERMINAL_CODING(f) ((f)->terminal->terminal_coding)
625 #define FRAME_KEYBOARD_CODING(f) ((f)->terminal->keyboard_coding)
627 #define TERMINAL_TERMINAL_CODING(d) ((d)->terminal_coding)
628 #define TERMINAL_KEYBOARD_CODING(d) ((d)->keyboard_coding)
630 #define FRAME_RIF(f) ((f)->terminal->rif)
632 #define FRAME_TERMINAL(f) ((f)->terminal)
634 /* FRAME_WINDOW_P tests whether the frame is a window, and is
635 defined to be the predicate for the window system being used. */
637 #ifdef HAVE_X_WINDOWS
638 #define FRAME_WINDOW_P(f) FRAME_X_P (f)
639 #endif
640 #ifdef HAVE_NTGUI
641 #define FRAME_WINDOW_P(f) FRAME_W32_P (f)
642 #endif
643 #ifndef FRAME_WINDOW_P
644 #define FRAME_WINDOW_P(f) (0)
645 #endif
647 /* Return true if the terminal device is not suspended. */
648 #define TERMINAL_ACTIVE_P(d) (((d)->type != output_termcap && (d)->type !=output_msdos_raw) || (d)->display_info.tty->input)
650 extern struct terminal *get_terminal (Lisp_Object terminal, int);
651 extern struct terminal *create_terminal (void);
652 extern void delete_terminal (struct terminal *);
654 /* The initial terminal device, created by initial_term_init. */
655 extern struct terminal *initial_terminal;
657 #ifdef HAVE_GPM
658 extern void close_gpm (int gpm_fd);
659 #endif