src/w32term.h

   1 /* Definitions and headers for communication on the Microsoft W32 API.
   2    Copyright (C) 1995, 2001 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 \f
  26 #define BLACK_PIX_DEFAULT(f) PALETTERGB(0,0,0)
  27 #define WHITE_PIX_DEFAULT(f) PALETTERGB(255,255,255)
  28
  29 #define FONT_WIDTH(f)       \
  30   ((f)->bdf ? (f)->bdf->width : (f)->tm.tmAveCharWidth)
  31 #define FONT_HEIGHT(f)      \
  32    ((f)->bdf ? (f)->bdf->height : (f)->tm.tmHeight)
  33 #define FONT_BASE(f)        \
  34   ((f)->bdf ? (f)->bdf->ury : (f)->tm.tmAscent)
  35 #define FONT_DESCENT(f)     \
  36   ((f)->bdf ? -((f)->bdf->lly) : (f)->tm.tmDescent)
  37 #define FONT_MAX_WIDTH(f)   \
  38   ((f)->bdf ? (f)->bdf->width : (f)->tm.tmMaxCharWidth)
  39
  40 #define CP_DEFAULT 1004
  41 /* Special pseudo-codepages. */
  42 #define CP_8BIT      -1
  43 #define CP_UNICODE   -2
  44 #define CP_UNKNOWN   -3
  45
  46 #define CHECK_W32_FRAME(f, frame)               \
  47   if (NILP (frame))                             \
  48     f = SELECTED_FRAME ();                      \
  49   else                                          \
  50     {                                           \
  51       CHECK_LIVE_FRAME (frame, 0);              \
  52       f = XFRAME (frame);                       \
  53     }                                           \
  54   if (! FRAME_W32_P (f))
  55
  56 /* Indicates whether we are in the readsocket call and the message we
  57    are processing in the current loop */
  58
  59 extern MSG CurMsg;
  60 extern BOOL bUseDflt;
  61
  62 extern struct frame *x_window_to_frame ();
  63
  64 /* Structure recording bitmaps and reference count.
  65    If REFCOUNT is 0 then this record is free to be reused.  */
  66
  67 struct w32_bitmap_record
  68 {
  69   Pixmap pixmap;
  70   char *file;
  71   HINSTANCE hinst; /* Used to load the file */
  72   int refcount;
  73   /* Record some info about this pixmap.  */
  74   int height, width, depth;
  75 };
  76
  77 /* Palette book-keeping stuff for mapping requested colors into the
  78    system palette.  Keep a ref-counted list of requested colors and
  79    regenerate the app palette whenever the requested list changes. */
  80
  81 extern Lisp_Object Vw32_enable_palette;
  82
  83 struct w32_palette_entry {
  84   struct w32_palette_entry * next;
  85   PALETTEENTRY entry;
  86 #if 0
  87   unsigned refcount;
  88 #endif
  89 };
  90
  91 extern void w32_regenerate_palette(struct frame *f);
  92
  93 \f
  94 /* For each display (currently only one on w32), we have a structure that
  95    records information about it.  */
  96
  97 struct w32_display_info
  98 {
  99   /* Chain of all w32_display_info structures.  */
 100   struct w32_display_info *next;
 101
 102   /* This is a cons cell of the form (NAME . FONT-LIST-CACHE).
 103      The same cons cell also appears in x_display_name_list.  */
 104   Lisp_Object name_list_element;
 105
 106   /* Number of frames that are on this display.  */
 107   int reference_count;
 108
 109   /* Dots per inch of the screen.  */
 110   double resx, resy;
 111
 112   /* Number of planes on this screen.  */
 113   int n_planes;
 114
 115   /* Number of bits per pixel on this screen.  */
 116   int n_cbits;
 117
 118   /* Dimensions of this screen.  */
 119   int height, width;
 120   int height_in,width_in;
 121
 122   /* Mask of things that cause the mouse to be grabbed.  */
 123   int grabbed;
 124
 125   /* Emacs bitmap-id of the default icon bitmap for this frame.
 126      Or -1 if none has been allocated yet.  */
 127   int icon_bitmap_id;
 128
 129   /* The root window of this screen.  */
 130   Window root_window;
 131
 132   /* The cursor to use for vertical scroll bars.  */
 133   Cursor vertical_scroll_bar_cursor;
 134
 135   /* Resource data base */
 136   XrmDatabase xrdb;
 137
 138   /* color palette information.  */
 139   int has_palette;
 140   struct w32_palette_entry * color_list;
 141   unsigned num_colors;
 142   HPALETTE palette;
 143
 144   /* deferred action flags checked when starting frame update.  */
 145   int regen_palette;
 146
 147   /* Keystroke that has been faked by Emacs and will be ignored when
 148      received; value is reset after key is received.  */
 149   int faked_key;
 150
 151   /* A table of all the fonts we have already loaded.  */
 152   struct font_info *font_table;
 153
 154   /* The current capacity of font_table.  */
 155   int font_table_size;
 156
 157   /* Minimum width over all characters in all fonts in font_table.  */
 158   int smallest_char_width;
 159
 160   /* Minimum font height over all fonts in font_table.  */
 161   int smallest_font_height;
 162
 163   /* Reusable Graphics Context for drawing a cursor in a non-default face. */
 164   XGCValues *scratch_cursor_gc;
 165
 166   /* These variables describe the range of text currently shown in its
 167      mouse-face, together with the window they apply to. As long as
 168      the mouse stays within this range, we need not redraw anything on
 169      its account.  Rows and columns are glyph matrix positions in
 170      MOUSE_FACE_WINDOW.  */
 171   int mouse_face_beg_row, mouse_face_beg_col;
 172   int mouse_face_beg_x, mouse_face_beg_y;
 173   int mouse_face_end_row, mouse_face_end_col;
 174   int mouse_face_end_x, mouse_face_end_y;
 175   int mouse_face_past_end;
 176   Lisp_Object mouse_face_window;
 177   int mouse_face_face_id;
 178   Lisp_Object mouse_face_overlay;
 179
 180   /* 1 if a mouse motion event came and we didn't handle it right away because
 181      gc was in progress.  */
 182   int mouse_face_deferred_gc;
 183
 184   /* FRAME and X, Y position of mouse when last checked for
 185      highlighting.  X and Y can be negative or out of range for the frame.  */
 186   struct frame *mouse_face_mouse_frame;
 187   int mouse_face_mouse_x, mouse_face_mouse_y;
 188
 189   /* Nonzero means defer mouse-motion highlighting.  */
 190   int mouse_face_defer;
 191
 192   /* Nonzero means that the mouse highlight should not be shown.  */
 193   int mouse_face_hidden;
 194
 195   int mouse_face_image_state;
 196
 197   char *w32_id_name;
 198
 199   /* The number of fonts actually stored in w32_font_table.
 200      font_table[n] is used and valid iff 0 <= n < n_fonts. 0 <=
 201      n_fonts <= font_table_size. and font_table[i].name != 0. */
 202   int n_fonts;
 203
 204   /* Pointer to bitmap records.  */
 205   struct w32_bitmap_record *bitmaps;
 206
 207   /* Allocated size of bitmaps field.  */
 208   int bitmaps_size;
 209
 210   /* Last used bitmap index.  */
 211   int bitmaps_last;
 212
 213   /* The frame (if any) which has the window that has keyboard focus.
 214      Zero if none.  This is examined by Ffocus_frame in w32fns.c.  Note
 215      that a mere EnterNotify event can set this; if you need to know the
 216      last frame specified in a FocusIn or FocusOut event, use
 217      w32_focus_event_frame.  */
 218   struct frame *w32_focus_frame;
 219
 220   /* The last frame mentioned in a FocusIn or FocusOut event.  This is
 221      separate from w32_focus_frame, because whether or not LeaveNotify
 222      events cause us to lose focus depends on whether or not we have
 223      received a FocusIn event for it.  */
 224   struct frame *w32_focus_event_frame;
 225
 226   /* The frame which currently has the visual highlight, and should get
 227      keyboard input (other sorts of input have the frame encoded in the
 228      event).  It points to the focus frame's selected window's
 229      frame.  It differs from w32_focus_frame when we're using a global
 230      minibuffer.  */
 231   struct frame *x_highlight_frame;
 232
 233   /* Cache of images.  */
 234   struct image_cache *image_cache;
 235 };
 236
 237 /* This is a chain of structures for all the displays currently in use.  */
 238 extern struct w32_display_info *x_display_list;
 239 extern struct w32_display_info one_w32_display_info;
 240
 241 /* This is a list of cons cells, each of the form (NAME . FONT-LIST-CACHE),
 242    one for each element of w32_display_list and in the same order.
 243    NAME is the name of the frame.
 244    FONT-LIST-CACHE records previous values returned by x-list-fonts.  */
 245 extern Lisp_Object w32_display_name_list;
 246
 247 /* Regexp matching a font name whose width is the same as `PIXEL_SIZE'.  */
 248 extern Lisp_Object Vx_pixel_size_width_font_regexp;
 249
 250 /* A flag to control how to display unibyte 8-bit character.  */
 251 extern int unibyte_display_via_language_environment;
 252
 253 struct w32_display_info *x_display_info_for_name ();
 254
 255 Lisp_Object display_x_get_resource P_ ((struct w32_display_info *,
 256                                         Lisp_Object, Lisp_Object,
 257                                         Lisp_Object, Lisp_Object));
 258
 259 extern struct w32_display_info *w32_term_init ();
 260 \f
 261 extern Lisp_Object w32_list_fonts P_ ((struct frame *, Lisp_Object, int, int));
 262 extern struct font_info *w32_get_font_info (), *w32_query_font ();
 263 extern void w32_cache_char_metrics (XFontStruct *font);
 264 extern void w32_find_ccl_program();
 265 extern Lisp_Object x_get_font_repertory P_ ((struct frame *,
 266                                              struct font_info *));
 267 \f
 268 #define PIX_TYPE COLORREF
 269
 270 /* Each W32 frame object points to its own struct w32_display object
 271    in the output_data.w32 field.  The w32_display structure contains all
 272    the information that is specific to W32 windows.  */
 273
 274 /* Put some things in x_output for compatibility.
 275    NTEMACS_TODO: Move all common things here to eliminate unneccesary
 276    diffs between X and w32 code.  */
 277 struct x_output
 278 {
 279   PIX_TYPE background_pixel;
 280   PIX_TYPE foreground_pixel;
 281 };
 282
 283
 284 struct w32_output
 285 {
 286   /* Placeholder for things accessed through output_data.x.  */
 287   struct x_output x_compatible;
 288
 289   /* Menubar "widget" handle.  */
 290   HMENU menubar_widget;
 291
 292   /* Original palette (used to deselect real palette after drawing) */
 293   HPALETTE old_palette;
 294
 295   /* Here are the Graphics Contexts for the default font.  */
 296   XGCValues *cursor_gc;                         /* cursor drawing */
 297
 298   /* The window used for this frame.
 299      May be zero while the frame object is being created
 300      and the window has not yet been created.  */
 301   Window window_desc;
 302
 303   /* The window that is the parent of this window.
 304      Usually this is a window that was made by the window manager,
 305      but it can be the root window, and it can be explicitly specified
 306      (see the explicit_parent field, below).  */
 307   Window parent_desc;
 308
 309   /* Default ASCII font of this frame. */
 310   XFontStruct *font;
 311
 312   /* The baseline offset of the default ASCII font.  */
 313   int baseline_offset;
 314
 315   /* If a fontset is specified for this frame instead of font, this
 316      value contains an ID of the fontset, else -1.  */
 317   int fontset;
 318
 319   /* Pixel values used for various purposes.
 320      border_pixel may be -1 meaning use a gray tile.  */
 321   COLORREF cursor_pixel;
 322   COLORREF border_pixel;
 323   COLORREF mouse_pixel;
 324   COLORREF cursor_foreground_pixel;
 325
 326   /* Foreground color for scroll bars.  A value of -1 means use the
 327      default (black for non-toolkit scroll bars).  */
 328   COLORREF scroll_bar_foreground_pixel;
 329
 330   /* Background color for scroll bars.  A value of -1 means use the
 331      default (background color of the frame for non-toolkit scroll
 332      bars).  */
 333   COLORREF scroll_bar_background_pixel;
 334
 335   /* Descriptor for the cursor in use for this window.  */
 336   Cursor text_cursor;
 337   Cursor nontext_cursor;
 338   Cursor modeline_cursor;
 339   Cursor hand_cursor;
 340   Cursor hourglass_cursor;
 341   Cursor horizontal_drag_cursor;
 342
 343   /* Window whose cursor is hourglass_cursor.  This window is
 344      temporarily mapped to display an hourglass cursor.  */
 345   Window hourglass_window;
 346
 347   /* Non-zero means hourglass cursor is currently displayed.  */
 348   unsigned hourglass_p : 1;
 349
 350   /* Flag to set when the window needs to be completely repainted.  */
 351   int needs_exposure;
 352
 353   DWORD dwStyle;
 354
 355   /* This is the Emacs structure for the display this frame is on.  */
 356   /* struct w32_display_info *display_info; */
 357
 358   /* Nonzero means our parent is another application's window
 359      and was explicitly specified.  */
 360   char explicit_parent;
 361
 362   /* Nonzero means tried already to make this frame visible.  */
 363   char asked_for_visible;
 364
 365   /* Nonzero means menubar is currently active.  */
 366   char menubar_active;
 367
 368   /* Nonzero means a menu command is being processed.  */
 369   char menu_command_in_progress;
 370
 371   /* Nonzero means menubar is about to become active, but should be
 372      brought up to date first.  */
 373   volatile char pending_menu_activation;
 374
 375   /* Relief GCs, colors etc.  */
 376   struct relief
 377   {
 378     XGCValues *gc;
 379     unsigned long pixel;
 380     int allocated_p;
 381   }
 382   black_relief, white_relief;
 383
 384   /* The background for which the above relief GCs were set up.
 385      They are changed only when a different background is involved.  */
 386   unsigned long relief_background;
 387 };
 388
 389 extern struct w32_output w32term_display;
 390
 391 /* Return the X output data for frame F.  */
 392 #define FRAME_X_OUTPUT(f) ((f)->output_data.w32)
 393
 394 /* Return the window associated with the frame F.  */
 395 #define FRAME_W32_WINDOW(f) ((f)->output_data.w32->window_desc)
 396 #define FRAME_X_WINDOW(f) ((f)->output_data.w32->window_desc)
 397
 398 #define FRAME_FOREGROUND_PIXEL(f) ((f)->output_data.x->foreground_pixel)
 399 #define FRAME_BACKGROUND_PIXEL(f) ((f)->output_data.x->background_pixel)
 400 #define FRAME_FONT(f) ((f)->output_data.w32->font)
 401 #define FRAME_FONTSET(f) ((f)->output_data.w32->fontset)
 402 #define FRAME_BASELINE_OFFSET(f) ((f)->output_data.w32->baseline_offset)
 403
 404 /* This gives the w32_display_info structure for the display F is on.  */
 405 #define FRAME_W32_DISPLAY_INFO(f) (&one_w32_display_info)
 406 #define FRAME_X_DISPLAY_INFO(f) (&one_w32_display_info)
 407
 408 /* This is the `Display *' which frame F is on.  */
 409 #define FRAME_X_DISPLAY(f) (0)
 410
 411 /* This is the 'font_info *' which frame F has.  */
 412 #define FRAME_W32_FONT_TABLE(f) (FRAME_W32_DISPLAY_INFO (f)->font_table)
 413
 414 /* Value is the smallest width of any character in any font on frame F.  */
 415
 416 #define FRAME_SMALLEST_CHAR_WIDTH(F) \
 417      FRAME_W32_DISPLAY_INFO(F)->smallest_char_width
 418
 419 /* Value is the smallest height of any font on frame F.  */
 420
 421 #define FRAME_SMALLEST_FONT_HEIGHT(F) \
 422      FRAME_W32_DISPLAY_INFO(F)->smallest_font_height
 423
 424 /* Return a pointer to the image cache of frame F.  */
 425
 426 #define FRAME_X_IMAGE_CACHE(F) FRAME_W32_DISPLAY_INFO ((F))->image_cache
 427
 428 \f
 429 /* W32-specific scroll bar stuff.  */
 430
 431 /* We represent scroll bars as lisp vectors.  This allows us to place
 432    references to them in windows without worrying about whether we'll
 433    end up with windows referring to dead scroll bars; the garbage
 434    collector will free it when its time comes.
 435
 436    We use struct scroll_bar as a template for accessing fields of the
 437    vector.  */
 438
 439 struct scroll_bar {
 440
 441   /* These fields are shared by all vectors.  */
 442   EMACS_INT size_from_Lisp_Vector_struct;
 443   struct Lisp_Vector *next_from_Lisp_Vector_struct;
 444
 445   /* The window we're a scroll bar for.  */
 446   Lisp_Object window;
 447
 448   /* The next and previous in the chain of scroll bars in this frame.  */
 449   Lisp_Object next, prev;
 450
 451   /* The window representing this scroll bar.  Since this is a full
 452      32-bit quantity, we store it split into two 32-bit values.  */
 453   Lisp_Object w32_window_low, w32_window_high;
 454
 455   /* Same as above for the widget.  */
 456   Lisp_Object w32_widget_low, w32_widget_high;
 457
 458   /* The position and size of the scroll bar in pixels, relative to the
 459      frame.  */
 460   Lisp_Object top, left, width, height;
 461
 462   /* The starting and ending positions of the handle, relative to the
 463      handle area (i.e. zero is the top position, not
 464      SCROLL_BAR_TOP_BORDER).  If they're equal, that means the handle
 465      hasn't been drawn yet.
 466
 467      These are not actually the locations where the beginning and end
 468      are drawn; in order to keep handles from becoming invisible when
 469      editing large files, we establish a minimum height by always
 470      drawing handle bottoms VERTICAL_SCROLL_BAR_MIN_HANDLE pixels below
 471      where they would be normally; the bottom and top are in a
 472      different co-ordinate system.  */
 473   Lisp_Object start, end;
 474
 475   /* If the scroll bar handle is currently being dragged by the user,
 476      this is the number of pixels from the top of the handle to the
 477      place where the user grabbed it.  If the handle isn't currently
 478      being dragged, this is Qnil.  */
 479   Lisp_Object dragging;
 480 };
 481
 482 /* The number of elements a vector holding a struct scroll_bar needs.  */
 483 #define SCROLL_BAR_VEC_SIZE                                     \
 484   ((sizeof (struct scroll_bar)                                  \
 485     - sizeof (EMACS_INT) - sizeof (struct Lisp_Vector *))       \
 486    / sizeof (Lisp_Object))
 487
 488 /* Turning a lisp vector value into a pointer to a struct scroll_bar.  */
 489 #define XSCROLL_BAR(vec) ((struct scroll_bar *) XVECTOR (vec))
 490
 491
 492 /* Building a 32-bit C integer from two 16-bit lisp integers.  */
 493 #define SCROLL_BAR_PACK(low, high) (XINT (high) << 16 | XINT (low))
 494
 495 /* Setting two lisp integers to the low and high words of a 32-bit C int.  */
 496 #define SCROLL_BAR_UNPACK(low, high, int32) \
 497   (XSETINT ((low),   (int32)        & 0xffff), \
 498    XSETINT ((high), ((int32) >> 16) & 0xffff))
 499
 500
 501 /* Extract the window id of the scroll bar from a struct scroll_bar.  */
 502 #define SCROLL_BAR_W32_WINDOW(ptr) \
 503   ((Window) SCROLL_BAR_PACK ((ptr)->w32_window_low, (ptr)->w32_window_high))
 504
 505 /* Store a window id in a struct scroll_bar.  */
 506 #define SET_SCROLL_BAR_W32_WINDOW(ptr, id) \
 507   (SCROLL_BAR_UNPACK ((ptr)->w32_window_low, (ptr)->w32_window_high, (int) id))
 508
 509 /* Extract the X widget of the scroll bar from a struct scroll_bar.  */
 510 #define SCROLL_BAR_X_WIDGET(ptr) \
 511   ((Widget) SCROLL_BAR_PACK ((ptr)->x_widget_low, (ptr)->x_widget_high))
 512
 513 /* Store a widget id in a struct scroll_bar.  */
 514 #define SET_SCROLL_BAR_X_WIDGET(ptr, w) \
 515   (SCROLL_BAR_UNPACK ((ptr)->x_widget_low, (ptr)->x_widget_high, (int) w))
 516
 517 /* Return the inside width of a vertical scroll bar, given the outside
 518    width.  */
 519 #define VERTICAL_SCROLL_BAR_INSIDE_WIDTH(f,width) \
 520   ((width) \
 521    - VERTICAL_SCROLL_BAR_LEFT_BORDER \
 522    - VERTICAL_SCROLL_BAR_RIGHT_BORDER \
 523    - VERTICAL_SCROLL_BAR_WIDTH_TRIM * 2)
 524
 525 /* Return the length of the rectangle within which the top of the
 526    handle must stay.  This isn't equivalent to the inside height,
 527    because the scroll bar handle has a minimum height.
 528
 529    This is the real range of motion for the scroll bar, so when we're
 530    scaling buffer positions to scroll bar positions, we use this, not
 531    VERTICAL_SCROLL_BAR_INSIDE_HEIGHT.  */
 532 #define VERTICAL_SCROLL_BAR_TOP_RANGE(f,height) \
 533   (VERTICAL_SCROLL_BAR_INSIDE_HEIGHT (f, height) - VERTICAL_SCROLL_BAR_MIN_HANDLE)
 534
 535 /* Return the inside height of vertical scroll bar, given the outside
 536    height.  See VERTICAL_SCROLL_BAR_TOP_RANGE too.  */
 537 #define VERTICAL_SCROLL_BAR_INSIDE_HEIGHT(f,height) \
 538   ((height) - VERTICAL_SCROLL_BAR_TOP_BORDER - VERTICAL_SCROLL_BAR_BOTTOM_BORDER)
 539
 540
 541 /* Border widths for scroll bars.
 542
 543    Scroll bar windows don't have any borders; their border width is
 544    set to zero, and we redraw borders ourselves.  This makes the code
 545    a bit cleaner, since we don't have to convert between outside width
 546    (used when relating to the rest of the screen) and inside width
 547    (used when sizing and drawing the scroll bar window itself).
 548
 549    The handle moves up and down/back and forth in a rectangle inset
 550    from the edges of the scroll bar.  These are widths by which we
 551    inset the handle boundaries from the scroll bar edges.  */
 552 #define VERTICAL_SCROLL_BAR_LEFT_BORDER (0)
 553 #define VERTICAL_SCROLL_BAR_RIGHT_BORDER (0)
 554 #define VERTICAL_SCROLL_BAR_TOP_BORDER (vertical_scroll_bar_top_border)
 555 #define VERTICAL_SCROLL_BAR_BOTTOM_BORDER (vertical_scroll_bar_bottom_border)
 556
 557 /* Minimum lengths for scroll bar handles, in pixels.  */
 558 #define VERTICAL_SCROLL_BAR_MIN_HANDLE (vertical_scroll_bar_min_handle)
 559
 560 /* Trimming off a few pixels from each side prevents
 561    text from glomming up against the scroll bar */
 562 #define VERTICAL_SCROLL_BAR_WIDTH_TRIM (0)
 563
 564 \f
 565 extern void w32_fill_rect ();
 566 extern void w32_clear_window ();
 567
 568 #define w32_fill_area(f,hdc,pix,x,y,nx,ny) \
 569 { \
 570     RECT rect; \
 571     rect.left = x; \
 572     rect.top = y; \
 573     rect.right = x + nx; \
 574     rect.bottom = y + ny; \
 575     w32_fill_rect (f,hdc,pix,&rect); \
 576 }
 577
 578 #define w32_clear_rect(f,hdc,lprect) \
 579 w32_fill_rect (f,hdc,f->output_data.x->background_pixel,lprect)
 580
 581 #define w32_clear_area(f,hdc,px,py,nx,ny) \
 582 w32_fill_area (f,hdc,f->output_data.x->background_pixel,px,py,nx,ny)
 583
 584 extern struct font_info *w32_load_font ();
 585 extern void w32_unload_font ();
 586
 587 /* Define for earlier versions of Visual C */
 588 #ifndef WM_MOUSEWHEEL
 589 #define WM_MOUSEWHEEL                  (WM_MOUSELAST + 1)
 590 #endif /* WM_MOUSEWHEEL */
 591 #ifndef MSH_MOUSEWHEEL
 592 #define MSH_MOUSEWHEEL                 "MSWHEEL_ROLLMSG"
 593 #endif /* MSH_MOUSEWHEEL */
 594 #ifndef WM_XBUTTONDOWN
 595 #define WM_XBUTTONDOWN                 (WM_MOUSEWHEEL + 1)
 596 #define WM_XBUTTONUP                   (WM_MOUSEWHEEL + 2)
 597 #endif /* WM_XBUTTONDOWN */
 598
 599 #define WM_EMACS_START                 (WM_USER + 1)
 600 #define WM_EMACS_KILL                  (WM_EMACS_START + 0)
 601 #define WM_EMACS_CREATEWINDOW          (WM_EMACS_START + 1)
 602 #define WM_EMACS_DONE                  (WM_EMACS_START + 2)
 603 #define WM_EMACS_CREATESCROLLBAR       (WM_EMACS_START + 3)
 604 #define WM_EMACS_SHOWWINDOW            (WM_EMACS_START + 4)
 605 #define WM_EMACS_SETWINDOWPOS          (WM_EMACS_START + 5)
 606 #define WM_EMACS_DESTROYWINDOW         (WM_EMACS_START + 6)
 607 #define WM_EMACS_TRACKPOPUPMENU        (WM_EMACS_START + 7)
 608 #define WM_EMACS_SETFOCUS              (WM_EMACS_START + 8)
 609 #define WM_EMACS_SETFOREGROUND         (WM_EMACS_START + 9)
 610 #define WM_EMACS_SETLOCALE             (WM_EMACS_START + 10)
 611 #define WM_EMACS_SETKEYBOARDLAYOUT     (WM_EMACS_START + 11)
 612 #define WM_EMACS_REGISTER_HOT_KEY      (WM_EMACS_START + 12)
 613 #define WM_EMACS_UNREGISTER_HOT_KEY    (WM_EMACS_START + 13)
 614 #define WM_EMACS_TOGGLE_LOCK_KEY       (WM_EMACS_START + 14)
 615 #define WM_EMACS_TRACK_CARET           (WM_EMACS_START + 15)
 616 #define WM_EMACS_DESTROY_CARET         (WM_EMACS_START + 16)
 617 #define WM_EMACS_SHOW_CARET            (WM_EMACS_START + 17)
 618 #define WM_EMACS_HIDE_CARET            (WM_EMACS_START + 18)
 619 #define WM_EMACS_SETCURSOR             (WM_EMACS_START + 19)
 620 #define WM_EMACS_END                   (WM_EMACS_START + 20)
 621
 622 #define WND_FONTWIDTH_INDEX    (0)
 623 #define WND_LINEHEIGHT_INDEX   (4)
 624 #define WND_BORDER_INDEX       (8)
 625 #define WND_SCROLLBAR_INDEX    (12)
 626 #define WND_BACKGROUND_INDEX   (16)
 627 #define WND_LAST_INDEX         (20)
 628
 629 #define WND_EXTRA_BYTES     (WND_LAST_INDEX)
 630
 631 extern DWORD dwWindowsThreadId;
 632 extern HANDLE hWindowsThread;
 633 extern DWORD dwMainThreadId;
 634 extern HANDLE hMainThread;
 635
 636 typedef struct W32Msg {
 637     MSG msg;
 638     DWORD dwModifiers;
 639     RECT rect;
 640 } W32Msg;
 641
 642 /* Structure for recording message when input thread must return a
 643    result that depends on lisp thread to compute.  Lisp thread can
 644    complete deferred messages out of order.  */
 645 typedef struct deferred_msg
 646 {
 647   struct deferred_msg * next;
 648   W32Msg                w32msg;
 649   LRESULT               result;
 650   int                   completed;
 651 } deferred_msg;
 652
 653 extern CRITICAL_SECTION critsect;
 654
 655 extern void init_crit ();
 656 extern void delete_crit ();
 657
 658 extern void signal_quit ();
 659
 660 #define enter_crit() EnterCriticalSection (&critsect)
 661 #define leave_crit() LeaveCriticalSection (&critsect)
 662
 663 extern void select_palette (struct frame * f, HDC hdc);
 664 extern void deselect_palette (struct frame * f, HDC hdc);
 665 extern HDC get_frame_dc (struct frame * f);
 666 extern int release_frame_dc (struct frame * f, HDC hDC);
 667
 668 extern void drain_message_queue ();
 669
 670 extern BOOL get_next_msg ();
 671 extern BOOL post_msg ();
 672 extern void complete_deferred_msg (HWND hwnd, UINT msg, LRESULT result);
 673 extern void wait_for_sync ();
 674
 675 extern BOOL parse_button ();
 676
 677 /* Keypad command key support.  W32 doesn't have virtual keys defined
 678    for the function keys on the keypad (they are mapped to the standard
 679    fuction keys), so we define our own.  */
 680 #define VK_NUMPAD_BEGIN         0x92
 681 #define VK_NUMPAD_CLEAR         (VK_NUMPAD_BEGIN + 0)
 682 #define VK_NUMPAD_ENTER         (VK_NUMPAD_BEGIN + 1)
 683 #define VK_NUMPAD_PRIOR         (VK_NUMPAD_BEGIN + 2)
 684 #define VK_NUMPAD_NEXT          (VK_NUMPAD_BEGIN + 3)
 685 #define VK_NUMPAD_END           (VK_NUMPAD_BEGIN + 4)
 686 #define VK_NUMPAD_HOME          (VK_NUMPAD_BEGIN + 5)
 687 #define VK_NUMPAD_LEFT          (VK_NUMPAD_BEGIN + 6)
 688 #define VK_NUMPAD_UP            (VK_NUMPAD_BEGIN + 7)
 689 #define VK_NUMPAD_RIGHT         (VK_NUMPAD_BEGIN + 8)
 690 #define VK_NUMPAD_DOWN          (VK_NUMPAD_BEGIN + 9)
 691 #define VK_NUMPAD_INSERT        (VK_NUMPAD_BEGIN + 10)
 692 #define VK_NUMPAD_DELETE        (VK_NUMPAD_BEGIN + 11)
 693
 694 #ifndef VK_LWIN
 695 /* Older compiler environments don't have these defined.  */
 696 #define VK_LWIN                 0x5B
 697 #define VK_RWIN                 0x5C
 698 #define VK_APPS                 0x5D
 699 #endif
 700
 701 /* Support for treating Windows and Apps keys as modifiers.  These
 702    constants must not overlap with any of the dwControlKeyState flags in
 703    KEY_EVENT_RECORD.  */
 704 #define LEFT_WIN_PRESSED       0x8000
 705 #define RIGHT_WIN_PRESSED      0x4000
 706 #define APPS_PRESSED           0x2000
 707
 708 /* When compiling on Windows 9x/ME and NT 3.x, the following are not defined
 709    (even though they are supported on 98 and ME.  */
 710 #ifndef WM_MOUSELEAVE
 711 #define WM_MOUSELEAVE 0x02A3
 712 #define TME_LEAVE 0x00000002;
 713
 714 typedef struct tagTRACKMOUSEEVENT
 715 {
 716   DWORD cbSize;
 717   DWORD dwFlags;
 718   HWND hwndTrack;
 719   DWORD dwHoverTime;
 720 } TRACKMOUSEEVENT;
 721 #endif
 722
 723 struct image;
 724 struct face;
 725
 726 XGCValues *XCreateGC (void *, Window, unsigned long, XGCValues *);
 727 struct frame * check_x_frame (Lisp_Object);
 728 Lisp_Object vga_stdcolor_name (int);
 729
 730 EXFUN (Fx_display_color_p, 1);
 731 EXFUN (Fx_display_grayscale_p, 1);
 732
 733 #define FONT_TYPE_FOR_UNIBYTE(font, ch)                 \
 734   ((font)->bdf ? BDF_1D_FONT : ANSI_FONT)
 735
 736 #define FONT_TYPE_FOR_MULTIBYTE(font, ch)               \
 737   (!(font)->bdf                                         \
 738    ? UNICODE_FONT                                       \
 739    : ((CHARSET_DIMENSION (CHAR_CHARSET ((ch))) == 1)    \
 740       ? BDF_1D_FONT : BDF_2D_FONT))
 741
 742 typedef DWORD (WINAPI * ClipboardSequence_Proc) ();
 743
 744 /* arch-tag: f201d05a-1240-4fc5-8ea4-ca24d4ee5671
 745    (do not change this comment) */