src/w32term.h

   1 /* Definitions and headers for communication on the Microsoft W32 API.
   2    Copyright (C) 1995 Free Software Foundation, Inc.
   3
   4 This file is part of GNU Emacs.
   5
   6 GNU Emacs is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2, or (at your option)
   9 any later version.
  10
  11 GNU Emacs is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GNU Emacs; see the file COPYING.  If not, write to
  18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  19 Boston, MA 02111-1307, USA.  */
  20
  21 /* Added by Kevin Gallo */
  22
  23 #include <w32gui.h>
  24
  25 /* The class of this X application.  */
  26 #define EMACS_CLASS "Emacs"
  27 \f
  28 #define BLACK_PIX_DEFAULT(f) PALETTERGB(0,0,0)
  29 #define WHITE_PIX_DEFAULT(f) PALETTERGB(255,255,255)
  30
  31 #define FONT_WIDTH(f)   ((f)->tm.tmAveCharWidth)
  32 #define FONT_HEIGHT(f)  ((f)->tm.tmHeight)
  33 #define FONT_BASE(f)    ((f)->tm.tmAscent)
  34
  35 #define CHECK_W32_FRAME(f, frame)               \
  36   if (NILP (frame))                             \
  37     f = selected_frame;                         \
  38   else                                          \
  39     {                                           \
  40       CHECK_LIVE_FRAME (frame, 0);              \
  41       f = XFRAME (frame);                       \
  42     }                                           \
  43   if (! FRAME_W32_P (f))
  44
  45 /* Indicates whether we are in the readsocket call and the message we
  46    are processing in the current loop */
  47
  48 extern MSG CurMsg;
  49 extern BOOL bUseDflt;
  50
  51 extern struct frame *x_window_to_frame ();
  52
  53 enum text_cursor_kinds {
  54   filled_box_cursor, hollow_box_cursor, bar_cursor
  55 };
  56
  57 /* This data type is used for the font_table field
  58    of struct w32_display_info.  */
  59
  60 struct font_info
  61 {
  62   XFontStruct *font;
  63   char *name;
  64 };
  65
  66 /* Structure recording bitmaps and reference count.
  67    If REFCOUNT is 0 then this record is free to be reused.  */
  68
  69 struct w32_bitmap_record
  70 {
  71   Pixmap pixmap;
  72   char *file;
  73   HINSTANCE hinst; /* Used to load the file */
  74   int refcount;
  75   /* Record some info about this pixmap.  */
  76   int height, width, depth;
  77 };
  78
  79 /* Palette book-keeping stuff for mapping requested colors into the
  80    system palette.  Keep a ref-counted list of requested colors and
  81    regenerate the app palette whenever the requested list changes. */
  82
  83 extern Lisp_Object Vw32_enable_palette;
  84
  85 struct w32_palette_entry {
  86   struct w32_palette_entry * next;
  87   PALETTEENTRY entry;
  88 #if 0
  89   unsigned refcount;
  90 #endif
  91 };
  92
  93 extern void w32_regenerate_palette(struct frame *f);
  94
  95 \f
  96 /* For each display (currently only one on w32), we have a structure that
  97    records information about it.  */
  98
  99 struct w32_display_info
 100 {
 101   /* Chain of all w32_display_info structures.  */
 102   struct w32_display_info *next;
 103   /* This is a cons cell of the form (NAME . FONT-LIST-CACHE).
 104      The same cons cell also appears in x_display_name_list.  */
 105   Lisp_Object name_list_element;
 106   /* Number of frames that are on this display.  */
 107   int reference_count;
 108   /* Number of planes on this screen.  */
 109   int n_planes;
 110   /* Number of bits per pixel on this screen.  */
 111   int n_cbits;
 112   /* Dimensions of this screen.  */
 113   int height, width;
 114   int height_in,width_in;
 115   /* Mask of things that cause the mouse to be grabbed.  */
 116   int grabbed;
 117   /* The root window of this screen.  */
 118   Window root_window;
 119   /* The cursor to use for vertical scroll bars.  */
 120   Cursor vertical_scroll_bar_cursor;
 121
 122   /* color palette information */
 123   int has_palette;
 124   struct w32_palette_entry * color_list;
 125   unsigned num_colors;
 126   HPALETTE palette;
 127
 128   /* deferred action flags checked when starting frame update */
 129   int regen_palette;
 130
 131   /* A table of all the fonts we have already loaded.  */
 132   struct font_info *font_table;
 133
 134   /* The current capacity of x_font_table.  */
 135   int font_table_size;
 136
 137   /* These variables describe the range of text currently shown
 138      in its mouse-face, together with the window they apply to.
 139      As long as the mouse stays within this range, we need not
 140      redraw anything on its account.  */
 141   int mouse_face_beg_row, mouse_face_beg_col;
 142   int mouse_face_end_row, mouse_face_end_col;
 143   int mouse_face_past_end;
 144   Lisp_Object mouse_face_window;
 145   int mouse_face_face_id;
 146
 147   /* 1 if a mouse motion event came and we didn't handle it right away because
 148      gc was in progress.  */
 149   int mouse_face_deferred_gc;
 150
 151   /* FRAME and X, Y position of mouse when last checked for
 152      highlighting.  X and Y can be negative or out of range for the frame.  */
 153   struct frame *mouse_face_mouse_frame;
 154   int mouse_face_mouse_x, mouse_face_mouse_y;
 155
 156   /* Nonzero means defer mouse-motion highlighting.  */
 157   int mouse_face_defer;
 158
 159   char *w32_id_name;
 160
 161   /* The number of fonts actually stored in w32_font_table.
 162      font_table[n] is used and valid iff 0 <= n < n_fonts.
 163      0 <= n_fonts <= font_table_size.  */
 164   int n_fonts;
 165
 166   /* Pointer to bitmap records.  */
 167   struct w32_bitmap_record *bitmaps;
 168
 169   /* Allocated size of bitmaps field.  */
 170   int bitmaps_size;
 171
 172   /* Last used bitmap index.  */
 173   int bitmaps_last;
 174
 175   /* The frame (if any) which has the window that has keyboard focus.
 176      Zero if none.  This is examined by Ffocus_frame in w32fns.c.  Note
 177      that a mere EnterNotify event can set this; if you need to know the
 178      last frame specified in a FocusIn or FocusOut event, use
 179      w32_focus_event_frame.  */
 180   struct frame *w32_focus_frame;
 181
 182   /* The last frame mentioned in a FocusIn or FocusOut event.  This is
 183      separate from w32_focus_frame, because whether or not LeaveNotify
 184      events cause us to lose focus depends on whether or not we have
 185      received a FocusIn event for it.  */
 186   struct frame *w32_focus_event_frame;
 187
 188   /* The frame which currently has the visual highlight, and should get
 189      keyboard input (other sorts of input have the frame encoded in the
 190      event).  It points to the focus frame's selected window's
 191      frame.  It differs from w32_focus_frame when we're using a global
 192      minibuffer.  */
 193   struct frame *w32_highlight_frame;
 194 };
 195
 196 /* This is a chain of structures for all the displays currently in use.  */
 197 extern struct w32_display_info one_w32_display_info;
 198
 199 /* This is a list of cons cells, each of the form (NAME . FONT-LIST-CACHE),
 200    one for each element of w32_display_list and in the same order.
 201    NAME is the name of the frame.
 202    FONT-LIST-CACHE records previous values returned by x-list-fonts.  */
 203 extern Lisp_Object w32_display_name_list;
 204
 205 extern struct w32_display_info *x_display_info_for_display ();
 206 extern struct w32_display_info *x_display_info_for_name ();
 207
 208 extern struct w32_display_info *w32_term_init ();
 209 \f
 210 /* Each W32 frame object points to its own struct w32_display object
 211    in the output_data.w32 field.  The w32_display structure contains all
 212    the information that is specific to W32 windows.  */
 213
 214 struct w32_output
 215 {
 216   /* Menubar "widget" handle.  */
 217   HMENU menubar_widget;
 218
 219   /* Original palette (used to deselect real palette after drawing) */
 220   HPALETTE old_palette;
 221
 222   /* Position of the W32 window (x and y offsets in root window).  */
 223   int left_pos;
 224   int top_pos;
 225
 226   /* Border width of the W32 window as known by the window system.  */
 227   int border_width;
 228
 229   /* Size of the W32 window in pixels.  */
 230   int pixel_height, pixel_width;
 231
 232   /* Height of a line, in pixels.  */
 233   int line_height;
 234
 235   /* Width of the internal border.  This is a line of background color
 236      just inside the window's border.  When the frame is selected,
 237      a highlighting is displayed inside the internal border.  */
 238   int internal_border_width;
 239
 240   /* The window used for this frame.
 241      May be zero while the frame object is being created
 242      and the window has not yet been created.  */
 243   Window window_desc;
 244
 245   /* The window that is the parent of this window.
 246      Usually this is a window that was made by the window manager,
 247      but it can be the root window, and it can be explicitly specified
 248      (see the explicit_parent field, below).  */
 249   Window parent_desc;
 250
 251   XFontStruct *font;
 252
 253   /* Pixel values used for various purposes.
 254      border_pixel may be -1 meaning use a gray tile.  */
 255   unsigned long background_pixel;
 256   unsigned long foreground_pixel;
 257   unsigned long cursor_pixel;
 258   unsigned long border_pixel;
 259   unsigned long mouse_pixel;
 260   unsigned long cursor_foreground_pixel;
 261
 262   /* Descriptor for the cursor in use for this window.  */
 263   Cursor text_cursor;
 264   Cursor nontext_cursor;
 265   Cursor modeline_cursor;
 266   Cursor cross_cursor;
 267
 268   /* Flag to set when the window needs to be completely repainted.  */
 269   int needs_exposure;
 270
 271   /* What kind of text cursor is drawn in this window right now?
 272      (If there is no cursor (phys_cursor_x < 0), then this means nothing.)  */
 273   enum text_cursor_kinds current_cursor;
 274
 275   /* What kind of text cursor should we draw in the future?
 276      This should always be filled_box_cursor or bar_cursor.  */
 277   enum text_cursor_kinds desired_cursor;
 278
 279   /* Width of bar cursor (if we are using that).  */
 280   int cursor_width;
 281
 282   DWORD dwStyle;
 283
 284   /* The size of the extra width currently allotted for vertical
 285      scroll bars, in pixels.  */
 286   int vertical_scroll_bar_extra;
 287
 288   /* Table of parameter faces for this frame.  Any resources (pixel
 289      values, fonts) referred to here have been allocated explicitly
 290      for this face, and should be freed if we change the face.  */
 291   struct face **param_faces;
 292   int n_param_faces;
 293
 294   /* Table of computed faces for this frame.  These are the faces
 295      whose indexes go into the upper bits of a glyph, computed by
 296      combining the parameter faces specified by overlays, text
 297      properties, and what have you.  The resources mentioned here
 298      are all shared with parameter faces.  */
 299   struct face **computed_faces;
 300   int n_computed_faces;         /* How many are valid */
 301   int size_computed_faces;      /* How many are allocated */
 302
 303   /* This is the gravity value for the specified window position.  */
 304   int win_gravity;
 305
 306   /* The geometry flags for this window.  */
 307   int size_hint_flags;
 308
 309   /* This is the Emacs structure for the display this frame is on.  */
 310   /* struct w32_display_info *display_info; */
 311
 312   /* Nonzero means our parent is another application's window
 313      and was explicitly specified.  */
 314   char explicit_parent;
 315
 316   /* Nonzero means tried already to make this frame visible.  */
 317   char asked_for_visible;
 318
 319   /* Nonzero means menubar is currently active.  */
 320   char menubar_active;
 321
 322   /* Nonzero means menubar is about to become active, but should be
 323      brought up to date first.  */
 324   volatile char pending_menu_activation;
 325 };
 326
 327 /* Get at the computed faces of an X window frame.  */
 328 #define FRAME_PARAM_FACES(f) ((f)->output_data.w32->param_faces)
 329 #define FRAME_N_PARAM_FACES(f) ((f)->output_data.w32->n_param_faces)
 330 #define FRAME_DEFAULT_PARAM_FACE(f) (FRAME_PARAM_FACES (f)[0])
 331 #define FRAME_MODE_LINE_PARAM_FACE(f) (FRAME_PARAM_FACES (f)[1])
 332
 333 #define FRAME_COMPUTED_FACES(f) ((f)->output_data.w32->computed_faces)
 334 #define FRAME_N_COMPUTED_FACES(f) ((f)->output_data.w32->n_computed_faces)
 335 #define FRAME_SIZE_COMPUTED_FACES(f) ((f)->output_data.w32->size_computed_faces)
 336 #define FRAME_DEFAULT_FACE(f) ((f)->output_data.w32->computed_faces[0])
 337 #define FRAME_MODE_LINE_FACE(f) ((f)->output_data.w32->computed_faces[1])
 338
 339 /* Return the window associated with the frame F.  */
 340 #define FRAME_W32_WINDOW(f) ((f)->output_data.w32->window_desc)
 341
 342 #define FRAME_FOREGROUND_PIXEL(f) ((f)->output_data.w32->foreground_pixel)
 343 #define FRAME_BACKGROUND_PIXEL(f) ((f)->output_data.w32->background_pixel)
 344 #define FRAME_FONT(f) ((f)->output_data.w32->font)
 345 #define FRAME_INTERNAL_BORDER_WIDTH(f) ((f)->output_data.w32->internal_border_width)
 346
 347 /* This gives the w32_display_info structure for the display F is on.  */
 348 #define FRAME_W32_DISPLAY_INFO(f) (&one_w32_display_info)
 349
 350 /* These two really ought to be called FRAME_PIXEL_{WIDTH,HEIGHT}.  */
 351 #define PIXEL_WIDTH(f) ((f)->output_data.w32->pixel_width)
 352 #define PIXEL_HEIGHT(f) ((f)->output_data.w32->pixel_height)
 353 #define FRAME_LINE_HEIGHT(f) ((f)->output_data.w32->line_height)
 354
 355 #define FRAME_DESIRED_CURSOR(f) ((f)->output_data.w32->desired_cursor)
 356
 357 \f
 358 /* W32-specific scroll bar stuff.  */
 359
 360 /* We represent scroll bars as lisp vectors.  This allows us to place
 361    references to them in windows without worrying about whether we'll
 362    end up with windows referring to dead scroll bars; the garbage
 363    collector will free it when its time comes.
 364
 365    We use struct scroll_bar as a template for accessing fields of the
 366    vector.  */
 367
 368 struct scroll_bar {
 369
 370   /* These fields are shared by all vectors.  */
 371   EMACS_INT size_from_Lisp_Vector_struct;
 372   struct Lisp_Vector *next_from_Lisp_Vector_struct;
 373
 374   /* The window we're a scroll bar for.  */
 375   Lisp_Object window;
 376
 377   /* The next and previous in the chain of scroll bars in this frame.  */
 378   Lisp_Object next, prev;
 379
 380   /* The window representing this scroll bar.  Since this is a full
 381      32-bit quantity, we store it split into two 32-bit values.  */
 382   Lisp_Object w32_window_low, w32_window_high;
 383
 384   /* The position and size of the scroll bar in pixels, relative to the
 385      frame.  */
 386   Lisp_Object top, left, width, height;
 387
 388   /* The starting and ending positions of the handle, relative to the
 389      handle area (i.e. zero is the top position, not
 390      SCROLL_BAR_TOP_BORDER).  If they're equal, that means the handle
 391      hasn't been drawn yet.
 392
 393      These are not actually the locations where the beginning and end
 394      are drawn; in order to keep handles from becoming invisible when
 395      editing large files, we establish a minimum height by always
 396      drawing handle bottoms VERTICAL_SCROLL_BAR_MIN_HANDLE pixels below
 397      where they would be normally; the bottom and top are in a
 398      different co-ordinate system.  */
 399   Lisp_Object start, end;
 400
 401   /* If the scroll bar handle is currently being dragged by the user,
 402      this is the number of pixels from the top of the handle to the
 403      place where the user grabbed it.  If the handle isn't currently
 404      being dragged, this is Qnil.  */
 405   Lisp_Object dragging;
 406 };
 407
 408 /* The number of elements a vector holding a struct scroll_bar needs.  */
 409 #define SCROLL_BAR_VEC_SIZE                                     \
 410   ((sizeof (struct scroll_bar)                                  \
 411     - sizeof (EMACS_INT) - sizeof (struct Lisp_Vector *))       \
 412    / sizeof (Lisp_Object))
 413
 414 /* Turning a lisp vector value into a pointer to a struct scroll_bar.  */
 415 #define XSCROLL_BAR(vec) ((struct scroll_bar *) XVECTOR (vec))
 416
 417
 418 /* Building a 32-bit C integer from two 16-bit lisp integers.  */
 419 #define SCROLL_BAR_PACK(low, high) (XINT (high) << 16 | XINT (low))
 420
 421 /* Setting two lisp integers to the low and high words of a 32-bit C int.  */
 422 #define SCROLL_BAR_UNPACK(low, high, int32) \
 423   (XSETINT ((low),   (int32)        & 0xffff), \
 424    XSETINT ((high), ((int32) >> 16) & 0xffff))
 425
 426
 427 /* Extract the window id of the scroll bar from a struct scroll_bar.  */
 428 #define SCROLL_BAR_W32_WINDOW(ptr) \
 429   ((Window) SCROLL_BAR_PACK ((ptr)->w32_window_low, (ptr)->w32_window_high))
 430
 431 /* Store a window id in a struct scroll_bar.  */
 432 #define SET_SCROLL_BAR_W32_WINDOW(ptr, id) \
 433   (SCROLL_BAR_UNPACK ((ptr)->w32_window_low, (ptr)->w32_window_high, (int) id))
 434
 435
 436 /* Return the outside pixel height for a vertical scroll bar HEIGHT
 437    rows high on frame F.  */
 438 #define VERTICAL_SCROLL_BAR_PIXEL_HEIGHT(f, height) \
 439   ((height) * (f)->output_data.w32->line_height)
 440
 441 /* Return the inside width of a vertical scroll bar, given the outside
 442    width.  */
 443 #define VERTICAL_SCROLL_BAR_INSIDE_WIDTH(width) \
 444   ((width) - VERTICAL_SCROLL_BAR_LEFT_BORDER - VERTICAL_SCROLL_BAR_RIGHT_BORDER)
 445
 446 /* Return the length of the rectangle within which the top of the
 447    handle must stay.  This isn't equivalent to the inside height,
 448    because the scroll bar handle has a minimum height.
 449
 450    This is the real range of motion for the scroll bar, so when we're
 451    scaling buffer positions to scroll bar positions, we use this, not
 452    VERTICAL_SCROLL_BAR_INSIDE_HEIGHT.  */
 453 #define VERTICAL_SCROLL_BAR_TOP_RANGE(height) \
 454   (VERTICAL_SCROLL_BAR_INSIDE_HEIGHT (height) - VERTICAL_SCROLL_BAR_MIN_HANDLE)
 455
 456 /* Return the inside height of vertical scroll bar, given the outside
 457    height.  See VERTICAL_SCROLL_BAR_TOP_RANGE too.  */
 458 #define VERTICAL_SCROLL_BAR_INSIDE_HEIGHT(height) \
 459   ((height) - VERTICAL_SCROLL_BAR_TOP_BORDER - VERTICAL_SCROLL_BAR_BOTTOM_BORDER)
 460
 461
 462 /* Border widths for scroll bars.
 463
 464    Scroll bar windows don't have any borders; their border width is
 465    set to zero, and we redraw borders ourselves.  This makes the code
 466    a bit cleaner, since we don't have to convert between outside width
 467    (used when relating to the rest of the screen) and inside width
 468    (used when sizing and drawing the scroll bar window itself).
 469
 470    The handle moves up and down/back and forth in a rectangle inset
 471    from the edges of the scroll bar.  These are widths by which we
 472    inset the handle boundaries from the scroll bar edges.  */
 473 #define VERTICAL_SCROLL_BAR_LEFT_BORDER (0)
 474 #define VERTICAL_SCROLL_BAR_RIGHT_BORDER (0)
 475 #define VERTICAL_SCROLL_BAR_TOP_BORDER (vertical_scroll_bar_top_border)
 476 #define VERTICAL_SCROLL_BAR_BOTTOM_BORDER (vertical_scroll_bar_bottom_border)
 477
 478 /* Minimum lengths for scroll bar handles, in pixels.  */
 479 #define VERTICAL_SCROLL_BAR_MIN_HANDLE (vertical_scroll_bar_min_handle)
 480
 481
 482 \f
 483 /* Manipulating pixel sizes and character sizes.
 484    Knowledge of which factors affect the overall size of the window should
 485    be hidden in these macros, if that's possible.
 486
 487    Return the upper/left pixel position of the character cell on frame F
 488    at ROW/COL.  */
 489 #define CHAR_TO_PIXEL_ROW(f, row) \
 490   ((f)->output_data.w32->internal_border_width \
 491    + (row) * (f)->output_data.w32->line_height)
 492 #define CHAR_TO_PIXEL_COL(f, col) \
 493   ((f)->output_data.w32->internal_border_width \
 494    + (col) * FONT_WIDTH ((f)->output_data.w32->font))
 495
 496 /* Return the pixel width/height of frame F if it has
 497    WIDTH columns/HEIGHT rows.  */
 498 #define CHAR_TO_PIXEL_WIDTH(f, width) \
 499   (CHAR_TO_PIXEL_COL (f, width) \
 500    + (f)->output_data.w32->vertical_scroll_bar_extra \
 501    + (f)->output_data.w32->internal_border_width)
 502 #define CHAR_TO_PIXEL_HEIGHT(f, height) \
 503   (CHAR_TO_PIXEL_ROW (f, height) \
 504    + (f)->output_data.w32->internal_border_width)
 505
 506
 507 /* Return the row/column (zero-based) of the character cell containing
 508    the pixel on FRAME at ROW/COL.  */
 509 #define PIXEL_TO_CHAR_ROW(f, row) \
 510   (((row) - (f)->output_data.w32->internal_border_width) \
 511    / (f)->output_data.w32->line_height)
 512 #define PIXEL_TO_CHAR_COL(f, col) \
 513   (((col) - (f)->output_data.w32->internal_border_width) \
 514    / FONT_WIDTH ((f)->output_data.w32->font))
 515
 516 /* How many columns/rows of text can we fit in WIDTH/HEIGHT pixels on
 517    frame F?  */
 518 #define PIXEL_TO_CHAR_WIDTH(f, width) \
 519   (PIXEL_TO_CHAR_COL (f, ((width) \
 520                           - (f)->output_data.w32->internal_border_width \
 521                           - (f)->output_data.w32->vertical_scroll_bar_extra)))
 522 #define PIXEL_TO_CHAR_HEIGHT(f, height) \
 523   (PIXEL_TO_CHAR_ROW (f, ((height) \
 524                           - (f)->output_data.w32->internal_border_width)))
 525 \f
 526 /* Interface to the face code functions.  */
 527
 528 /* Create the first two computed faces for a frame -- the ones that
 529    have GC's.  */
 530 extern void init_frame_faces (/* FRAME_PTR */);
 531
 532 /* Free the resources for the faces associated with a frame.  */
 533 extern void free_frame_faces (/* FRAME_PTR */);
 534
 535 /* Given a computed face, find or make an equivalent display face
 536    in face_vector, and return a pointer to it.  */
 537 extern struct face *intern_face (/* FRAME_PTR, struct face * */);
 538
 539 /* Given a frame and a face name, return the face's ID number, or
 540    zero if it isn't a recognized face name.  */
 541 extern int face_name_id_number (/* FRAME_PTR, Lisp_Object */);
 542
 543 /* Return non-zero if FONT1 and FONT2 have the same size bounding box.
 544    We assume that they're both character-cell fonts.  */
 545 extern int same_size_fonts (/* XFontStruct *, XFontStruct * */);
 546
 547 /* Recompute the GC's for the default and modeline faces.
 548    We call this after changing frame parameters on which those GC's
 549    depend.  */
 550 extern void recompute_basic_faces (/* FRAME_PTR */);
 551
 552 /* Return the face ID associated with a buffer position POS.  Store
 553    into *ENDPTR the next position at which a different face is
 554    needed.  This does not take account of glyphs that specify their
 555    own face codes.  F is the frame in use for display, and W is a
 556    window displaying the current buffer.
 557
 558    REGION_BEG, REGION_END delimit the region, so it can be highlighted.  */
 559 extern int compute_char_face (/* FRAME_PTR frame,
 560                                  struct window *w,
 561                                  int pos,
 562                                  int region_beg, int region_end,
 563                                  int *endptr */);
 564 /* Return the face ID to use to display a special glyph which selects
 565    FACE_CODE as the face ID, assuming that ordinarily the face would
 566    be BASIC_FACE.  F is the frame.  */
 567 extern int compute_glyph_face (/* FRAME_PTR, int */);
 568
 569 extern void w32_fill_rect ();
 570 extern void w32_clear_window ();
 571
 572 #define w32_fill_area(f,hdc,pix,x,y,nx,ny) \
 573 { \
 574     RECT rect; \
 575     rect.left = x; \
 576     rect.top = y; \
 577     rect.right = x + nx; \
 578     rect.bottom = y + ny; \
 579     w32_fill_rect (f,hdc,pix,&rect); \
 580 }
 581
 582 #define w32_clear_rect(f,hdc,lprect) \
 583 w32_fill_rect (f,hdc,f->output_data.w32->background_pixel,lprect)
 584
 585 #define w32_clear_area(f,hdc,x,y,nx,ny) \
 586 w32_fill_area (f,hdc,f->output_data.w32->background_pixel,x,y,nx,ny)
 587
 588 extern XFontStruct *w32_load_font ();
 589 extern void w32_unload_font ();
 590
 591 /* Define for earlier versions of Visual C */
 592 #ifndef WM_MOUSEWHEEL
 593 #define WM_MOUSEWHEEL                  (0x020A)
 594 #endif /* WM_MOUSEWHEEL */
 595
 596 #define WM_EMACS_START                 (WM_USER + 1)
 597 #define WM_EMACS_KILL                  (WM_EMACS_START + 0x00)
 598 #define WM_EMACS_CREATEWINDOW          (WM_EMACS_START + 0x01)
 599 #define WM_EMACS_DONE                  (WM_EMACS_START + 0x02)
 600 #define WM_EMACS_CREATESCROLLBAR       (WM_EMACS_START + 0x03)
 601 #define WM_EMACS_SHOWWINDOW            (WM_EMACS_START + 0x04)
 602 #define WM_EMACS_SETWINDOWPOS          (WM_EMACS_START + 0x05)
 603 #define WM_EMACS_DESTROYWINDOW         (WM_EMACS_START + 0x06)
 604 #define WM_EMACS_TRACKPOPUPMENU        (WM_EMACS_START + 0x07)
 605 #define WM_EMACS_SETFOCUS              (WM_EMACS_START + 0x08)
 606 #define WM_EMACS_END                   (WM_EMACS_START + 0x10)
 607
 608 #define WND_FONTWIDTH_INDEX    (0)
 609 #define WND_LINEHEIGHT_INDEX   (4)
 610 #define WND_BORDER_INDEX       (8)
 611 #define WND_SCROLLBAR_INDEX    (12)
 612 #define WND_BACKGROUND_INDEX   (16)
 613 #define WND_LAST_INDEX         (20)
 614
 615 #define WND_EXTRA_BYTES     (WND_LAST_INDEX)
 616
 617 extern DWORD dwWindowsThreadId;
 618 extern HANDLE hWindowsThread;
 619 extern DWORD dwMainThreadId;
 620 extern HANDLE hMainThread;
 621
 622 typedef struct W32Msg {
 623     MSG msg;
 624     DWORD dwModifiers;
 625     RECT rect;
 626 } W32Msg;
 627
 628 /* Structure for recording message when input thread must return a
 629    result that depends on lisp thread to compute.  Lisp thread can
 630    complete deferred messages out of order.  */
 631 typedef struct deferred_msg
 632 {
 633   struct deferred_msg * next;
 634   W32Msg                w32msg;
 635   LRESULT               result;
 636   int                   completed;
 637 } deferred_msg;
 638
 639 extern CRITICAL_SECTION critsect;
 640
 641 extern void init_crit ();
 642 extern void delete_crit ();
 643
 644 #define enter_crit() EnterCriticalSection (&critsect)
 645 #define leave_crit() LeaveCriticalSection (&critsect)
 646
 647 extern void select_palette (struct frame * f, HDC hdc);
 648 extern void deselect_palette (struct frame * f, HDC hdc);
 649 extern HDC get_frame_dc (struct frame * f);
 650 extern int release_frame_dc (struct frame * f, HDC hDC);
 651
 652 extern BOOL get_next_msg ();
 653 extern BOOL post_msg ();
 654 extern void complete_deferred_msg (HWND hwnd, UINT msg, LRESULT result);
 655 extern void wait_for_sync ();
 656
 657 extern BOOL parse_button ();
 658
 659 /* Keypad command key support.  W32 doesn't have virtual keys defined
 660    for the function keys on the keypad (they are mapped to the standard
 661    fuction keys), so we define our own.  */
 662 #define VK_NUMPAD_BEGIN         0x92
 663 #define VK_NUMPAD_CLEAR         (VK_NUMPAD_BEGIN + 0)
 664 #define VK_NUMPAD_ENTER         (VK_NUMPAD_BEGIN + 1)
 665 #define VK_NUMPAD_PRIOR         (VK_NUMPAD_BEGIN + 2)
 666 #define VK_NUMPAD_NEXT          (VK_NUMPAD_BEGIN + 3)
 667 #define VK_NUMPAD_END           (VK_NUMPAD_BEGIN + 4)
 668 #define VK_NUMPAD_HOME          (VK_NUMPAD_BEGIN + 5)
 669 #define VK_NUMPAD_LEFT          (VK_NUMPAD_BEGIN + 6)
 670 #define VK_NUMPAD_UP            (VK_NUMPAD_BEGIN + 7)
 671 #define VK_NUMPAD_RIGHT         (VK_NUMPAD_BEGIN + 8)
 672 #define VK_NUMPAD_DOWN          (VK_NUMPAD_BEGIN + 9)
 673 #define VK_NUMPAD_INSERT        (VK_NUMPAD_BEGIN + 10)
 674 #define VK_NUMPAD_DELETE        (VK_NUMPAD_BEGIN + 11)
 675
 676 #ifndef VK_LWIN
 677 /* Older compiler environments don't have these defined.  */
 678 #define VK_LWIN                 0x5B
 679 #define VK_RWIN                 0x5C
 680 #define VK_APPS                 0x5D
 681 #endif