src/w32term.h

   1 /* Definitions and headers for communication on the Microsoft Windows API.
   2    Copyright (C) 1995, 2001-2012 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 3 of the License, or
   9 (at your option) 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.  If not, see <http://www.gnu.org/licenses/>.  */
  18
  19 /* Added by Kevin Gallo */
  20
  21 #include "w32gui.h"
  22
  23 \f
  24 #define BLACK_PIX_DEFAULT(f) PALETTERGB(0,0,0)
  25 #define WHITE_PIX_DEFAULT(f) PALETTERGB(255,255,255)
  26
  27 #define FONT_WIDTH(f)     ((f)->max_width)
  28 #define FONT_HEIGHT(f)    ((f)->height)
  29 #define FONT_BASE(f)      ((f)->ascent)
  30 #define FONT_DESCENT(f)   ((f)->descent)
  31
  32 #define CP_DEFAULT 1004
  33
  34 #define CHECK_W32_FRAME(f, frame)               \
  35   if (NILP (frame))                             \
  36     f = SELECTED_FRAME ();                      \
  37   else                                          \
  38     {                                           \
  39       CHECK_LIVE_FRAME (frame, 0);              \
  40       f = XFRAME (frame);                       \
  41     }                                           \
  42   if (! FRAME_W32_P (f))
  43
  44 /* Indicates whether we are in the readsocket call and the message we
  45    are processing in the current loop */
  46
  47 extern MSG CurMsg;
  48 extern BOOL bUseDflt;
  49
  50 /* Structure recording bitmaps and reference count.
  51    If REFCOUNT is 0 then this record is free to be reused.  */
  52
  53 struct w32_bitmap_record
  54 {
  55   Pixmap pixmap;
  56   char *file;
  57   HINSTANCE hinst; /* Used to load the file */
  58   int refcount;
  59   /* Record some info about this pixmap.  */
  60   int height, width, depth;
  61 };
  62
  63 struct w32_palette_entry {
  64   struct w32_palette_entry * next;
  65   PALETTEENTRY entry;
  66 #if 0
  67   unsigned refcount;
  68 #endif
  69 };
  70
  71 extern void w32_regenerate_palette (struct frame *f);
  72
  73 \f
  74 /* For each display (currently only one on w32), we have a structure that
  75    records information about it.  */
  76
  77 struct w32_display_info
  78 {
  79   /* Chain of all w32_display_info structures.  */
  80   struct w32_display_info *next;
  81
  82   /* The generic display parameters corresponding to this w32 display.  */
  83   struct terminal *terminal;
  84
  85   /* This is a cons cell of the form (NAME . FONT-LIST-CACHE).
  86      The same cons cell also appears in x_display_name_list.  */
  87   Lisp_Object name_list_element;
  88
  89   /* Number of frames that are on this display.  */
  90   int reference_count;
  91
  92   /* Dots per inch of the screen.  */
  93   double resx, resy;
  94
  95   /* Number of planes on this screen.  */
  96   int n_planes;
  97
  98   /* Number of bits per pixel on this screen.  */
  99   int n_cbits;
 100
 101   /* Mask of things that cause the mouse to be grabbed.  */
 102   int grabbed;
 103
 104   /* Emacs bitmap-id of the default icon bitmap for this frame.
 105      Or -1 if none has been allocated yet.  */
 106   ptrdiff_t icon_bitmap_id;
 107
 108   /* The root window of this screen.  */
 109   Window root_window;
 110
 111   /* The cursor to use for vertical scroll bars.  */
 112   Cursor vertical_scroll_bar_cursor;
 113
 114   /* Resource data base */
 115   XrmDatabase xrdb;
 116
 117   /* color palette information.  */
 118   int has_palette;
 119   struct w32_palette_entry * color_list;
 120   unsigned num_colors;
 121   HPALETTE palette;
 122
 123   /* deferred action flags checked when starting frame update.  */
 124   int regen_palette;
 125
 126   /* Keystroke that has been faked by Emacs and will be ignored when
 127      received; value is reset after key is received.  */
 128   int faked_key;
 129
 130   /* Minimum width over all characters in all fonts in font_table.  */
 131   int smallest_char_width;
 132
 133   /* Minimum font height over all fonts in font_table.  */
 134   int smallest_font_height;
 135
 136   /* Reusable Graphics Context for drawing a cursor in a non-default face. */
 137   XGCValues *scratch_cursor_gc;
 138
 139   /* Information about the range of text currently shown in
 140      mouse-face.  */
 141   Mouse_HLInfo mouse_highlight;
 142
 143   char *w32_id_name;
 144
 145   /* The number of fonts actually stored in w32_font_table.
 146      font_table[n] is used and valid if 0 <= n < n_fonts. 0 <=
 147      n_fonts <= font_table_size. and font_table[i].name != 0. */
 148   int n_fonts;
 149
 150   /* Pointer to bitmap records.  */
 151   struct w32_bitmap_record *bitmaps;
 152
 153   /* Allocated size of bitmaps field.  */
 154   ptrdiff_t bitmaps_size;
 155
 156   /* Last used bitmap index.  */
 157   ptrdiff_t bitmaps_last;
 158
 159   /* The frame (if any) which has the window that has keyboard focus.
 160      Zero if none.  This is examined by Ffocus_frame in w32fns.c.  Note
 161      that a mere EnterNotify event can set this; if you need to know the
 162      last frame specified in a FocusIn or FocusOut event, use
 163      w32_focus_event_frame.  */
 164   struct frame *w32_focus_frame;
 165
 166   /* The last frame mentioned in a FocusIn or FocusOut event.  This is
 167      separate from w32_focus_frame, because whether or not LeaveNotify
 168      events cause us to lose focus depends on whether or not we have
 169      received a FocusIn event for it.  */
 170   struct frame *w32_focus_event_frame;
 171
 172   /* The frame which currently has the visual highlight, and should get
 173      keyboard input (other sorts of input have the frame encoded in the
 174      event).  It points to the focus frame's selected window's
 175      frame.  It differs from w32_focus_frame when we're using a global
 176      minibuffer.  */
 177   struct frame *x_highlight_frame;
 178 };
 179
 180 /* This is a chain of structures for all the displays currently in use.  */
 181 extern struct w32_display_info *x_display_list;
 182 extern struct w32_display_info one_w32_display_info;
 183
 184 /* This is a list of cons cells, each of the form (NAME . FONT-LIST-CACHE),
 185    one for each element of w32_display_list and in the same order.
 186    NAME is the name of the frame.
 187    FONT-LIST-CACHE records previous values returned by x-list-fonts.  */
 188 extern Lisp_Object w32_display_name_list;
 189
 190 extern struct frame *x_window_to_frame (struct w32_display_info *, HWND);
 191
 192 struct w32_display_info *x_display_info_for_name (Lisp_Object);
 193
 194 Lisp_Object display_x_get_resource (struct w32_display_info *,
 195                                     Lisp_Object, Lisp_Object,
 196                                     Lisp_Object, Lisp_Object);
 197
 198 extern struct w32_display_info *w32_term_init (Lisp_Object,
 199                                                char *, char *);
 200
 201 extern int x_display_pixel_height (struct w32_display_info *);
 202 extern int x_display_pixel_width (struct w32_display_info *);
 203
 204 extern Lisp_Object x_get_focus_frame (struct frame *);
 205
 206 \f
 207 #define PIX_TYPE COLORREF
 208
 209 /* Each W32 frame object points to its own struct w32_display object
 210    in the output_data.w32 field.  The w32_display structure contains all
 211    the information that is specific to W32 windows.  */
 212
 213 /* Put some things in x_output for compatibility.
 214    NTEMACS_TODO: Move all common things here to eliminate unnecessary
 215    diffs between X and w32 code.  */
 216 struct x_output
 217 {
 218 #if 0 /* These are also defined in struct frame.  Use that instead.  */
 219   PIX_TYPE background_pixel;
 220   PIX_TYPE foreground_pixel;
 221 #endif
 222
 223   /* Keep track of focus.  May be EXPLICIT if we received a FocusIn for this
 224      frame, or IMPLICIT if we received an EnterNotify.
 225      FocusOut and LeaveNotify clears EXPLICIT/IMPLICIT. */
 226   int focus_state;
 227
 228 };
 229
 230 enum
 231 {
 232   /* Values for focus_state, used as bit mask.
 233      EXPLICIT means we received a FocusIn for the frame and know it has
 234      the focus.  IMPLICIT means we received an EnterNotify and the frame
 235      may have the focus if no window manager is running.
 236      FocusOut and LeaveNotify clears EXPLICIT/IMPLICIT. */
 237   FOCUS_NONE     = 0,
 238   FOCUS_IMPLICIT = 1,
 239   FOCUS_EXPLICIT = 2
 240 };
 241
 242 struct w32_output
 243 {
 244   /* Placeholder for things accessed through output_data.x.  */
 245   struct x_output x_compatible;
 246
 247   /* Menubar "widget" handle.  */
 248   HMENU menubar_widget;
 249
 250   /* Original palette (used to deselect real palette after drawing) */
 251   HPALETTE old_palette;
 252
 253   /* Here are the Graphics Contexts for the default font.  */
 254   XGCValues *cursor_gc;                         /* cursor drawing */
 255
 256   /* The window used for this frame.
 257      May be zero while the frame object is being created
 258      and the window has not yet been created.  */
 259   Window window_desc;
 260
 261   /* The window that is the parent of this window.
 262      Usually this is a window that was made by the window manager,
 263      but it can be the root window, and it can be explicitly specified
 264      (see the explicit_parent field, below).  */
 265   Window parent_desc;
 266
 267   /* Default ASCII font of this frame. */
 268   struct font *font;
 269
 270   /* The baseline offset of the default ASCII font.  */
 271   int baseline_offset;
 272
 273   /* If a fontset is specified for this frame instead of font, this
 274      value contains an ID of the fontset, else -1.  */
 275   int fontset;
 276
 277   /* Pixel values used for various purposes.
 278      border_pixel may be -1 meaning use a gray tile.  */
 279   COLORREF cursor_pixel;
 280   COLORREF border_pixel;
 281   COLORREF mouse_pixel;
 282   COLORREF cursor_foreground_pixel;
 283
 284   /* Foreground color for scroll bars.  A value of -1 means use the
 285      default (black for non-toolkit scroll bars).  */
 286   COLORREF scroll_bar_foreground_pixel;
 287
 288   /* Background color for scroll bars.  A value of -1 means use the
 289      default (background color of the frame for non-toolkit scroll
 290      bars).  */
 291   COLORREF scroll_bar_background_pixel;
 292
 293   /* Descriptor for the cursor in use for this window.  */
 294   Cursor text_cursor;
 295   Cursor nontext_cursor;
 296   Cursor modeline_cursor;
 297   Cursor hand_cursor;
 298   Cursor hourglass_cursor;
 299   Cursor horizontal_drag_cursor;
 300
 301   /* Non-zero means hourglass cursor is currently displayed.  */
 302   unsigned hourglass_p : 1;
 303
 304   /* Non-hourglass cursor that is currently active.  */
 305   Cursor current_cursor;
 306
 307   DWORD dwStyle;
 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   /* Relief GCs, colors etc.  */
 327   struct relief
 328   {
 329     XGCValues *gc;
 330     unsigned long pixel;
 331     int allocated_p;
 332   }
 333   black_relief, white_relief;
 334
 335   /* The background for which the above relief GCs were set up.
 336      They are changed only when a different background is involved.  */
 337   unsigned long relief_background;
 338 };
 339
 340 extern struct w32_output w32term_display;
 341
 342 /* Return the X output data for frame F.  */
 343 #define FRAME_X_OUTPUT(f) ((f)->output_data.w32)
 344
 345 /* Return the window associated with the frame F.  */
 346 #define FRAME_W32_WINDOW(f) ((f)->output_data.w32->window_desc)
 347 #define FRAME_X_WINDOW(f) FRAME_W32_WINDOW (f)
 348
 349 #define FRAME_FONT(f) ((f)->output_data.w32->font)
 350 #define FRAME_FONTSET(f) ((f)->output_data.w32->fontset)
 351 #define FRAME_BASELINE_OFFSET(f) ((f)->output_data.w32->baseline_offset)
 352
 353 /* This gives the w32_display_info structure for the display F is on.  */
 354 #define FRAME_W32_DISPLAY_INFO(f) (&one_w32_display_info)
 355 #define FRAME_X_DISPLAY_INFO(f) (&one_w32_display_info)
 356
 357 /* This is the `Display *' which frame F is on.  */
 358 #define FRAME_X_DISPLAY(f) (0)
 359
 360 /* Value is the smallest width of any character in any font on frame F.  */
 361
 362 #define FRAME_SMALLEST_CHAR_WIDTH(F) \
 363      FRAME_W32_DISPLAY_INFO(F)->smallest_char_width
 364
 365 /* Value is the smallest height of any font on frame F.  */
 366
 367 #define FRAME_SMALLEST_FONT_HEIGHT(F) \
 368      FRAME_W32_DISPLAY_INFO(F)->smallest_font_height
 369 \f
 370 /* W32-specific scroll bar stuff.  */
 371
 372 /* We represent scroll bars as lisp vectors.  This allows us to place
 373    references to them in windows without worrying about whether we'll
 374    end up with windows referring to dead scroll bars; the garbage
 375    collector will free it when its time comes.
 376
 377    We use struct scroll_bar as a template for accessing fields of the
 378    vector.  */
 379
 380 struct scroll_bar {
 381
 382   /* These fields are shared by all vectors.  */
 383   EMACS_INT size_from_Lisp_Vector_struct;
 384   struct Lisp_Vector *next_from_Lisp_Vector_struct;
 385
 386   /* The window we're a scroll bar for.  */
 387   Lisp_Object window;
 388
 389   /* The next and previous in the chain of scroll bars in this frame.  */
 390   Lisp_Object next, prev;
 391
 392   /* The window representing this scroll bar.  Since this is a full
 393      32-bit quantity, we store it split into two 32-bit values.  */
 394   Lisp_Object w32_window_low, w32_window_high;
 395
 396   /* Same as above for the widget.  */
 397   Lisp_Object w32_widget_low, w32_widget_high;
 398
 399   /* The position and size of the scroll bar in pixels, relative to the
 400      frame.  */
 401   Lisp_Object top, left, width, height;
 402
 403   /* The starting and ending positions of the handle, relative to the
 404      handle area (i.e. zero is the top position, not
 405      SCROLL_BAR_TOP_BORDER).  If they're equal, that means the handle
 406      hasn't been drawn yet.
 407
 408      These are not actually the locations where the beginning and end
 409      are drawn; in order to keep handles from becoming invisible when
 410      editing large files, we establish a minimum height by always
 411      drawing handle bottoms VERTICAL_SCROLL_BAR_MIN_HANDLE pixels below
 412      where they would be normally; the bottom and top are in a
 413      different co-ordinate system.  */
 414   Lisp_Object start, end;
 415
 416   /* If the scroll bar handle is currently being dragged by the user,
 417      this is the number of pixels from the top of the handle to the
 418      place where the user grabbed it.  If the handle isn't currently
 419      being dragged, this is Qnil.  */
 420   Lisp_Object dragging;
 421
 422   /* t if the background of the fringe that is adjacent to a scroll
 423      bar is extended to the gap between the fringe and the bar.  */
 424   Lisp_Object fringe_extended_p;
 425 };
 426
 427 /* The number of elements a vector holding a struct scroll_bar needs.  */
 428 #define SCROLL_BAR_VEC_SIZE                                     \
 429   ((sizeof (struct scroll_bar)                                  \
 430     - sizeof (EMACS_INT) - sizeof (struct Lisp_Vector *))       \
 431    / word_size)
 432
 433 /* Turning a lisp vector value into a pointer to a struct scroll_bar.  */
 434 #define XSCROLL_BAR(vec) ((struct scroll_bar *) XVECTOR (vec))
 435
 436 #ifdef _WIN64
 437 /* Building a 64-bit C integer from two 32-bit lisp integers.  */
 438 #define SCROLL_BAR_PACK(low, high) (XINT (high) << 32 | XINT (low))
 439
 440 /* Setting two lisp integers to the low and high words of a 64-bit C int.  */
 441 #define SCROLL_BAR_UNPACK(low, high, int64) \
 442   (XSETINT ((low),   ((DWORDLONG)(int64))        & 0xffffffff), \
 443    XSETINT ((high), ((DWORDLONG)(int64) >> 32) & 0xffffffff))
 444 #else  /* not _WIN64 */
 445 /* Building a 32-bit C integer from two 16-bit lisp integers.  */
 446 #define SCROLL_BAR_PACK(low, high) (XINT (high) << 16 | XINT (low))
 447
 448 /* Setting two lisp integers to the low and high words of a 32-bit C int.  */
 449 #define SCROLL_BAR_UNPACK(low, high, int32) \
 450   (XSETINT ((low),   (int32)        & 0xffff), \
 451    XSETINT ((high), ((int32) >> 16) & 0xffff))
 452 #endif  /* not _WIN64 */
 453
 454 /* Extract the window id of the scroll bar from a struct scroll_bar.  */
 455 #define SCROLL_BAR_W32_WINDOW(ptr) \
 456   ((Window) SCROLL_BAR_PACK ((ptr)->w32_window_low, (ptr)->w32_window_high))
 457
 458 /* Store a window id in a struct scroll_bar.  */
 459 #define SET_SCROLL_BAR_W32_WINDOW(ptr, id) \
 460   (SCROLL_BAR_UNPACK ((ptr)->w32_window_low, (ptr)->w32_window_high, (intptr_t) id))
 461
 462 /* Extract the X widget of the scroll bar from a struct scroll_bar.  */
 463 #define SCROLL_BAR_X_WIDGET(ptr) \
 464   ((Widget) SCROLL_BAR_PACK ((ptr)->x_widget_low, (ptr)->x_widget_high))
 465
 466 /* Store a widget id in a struct scroll_bar.  */
 467 #define SET_SCROLL_BAR_X_WIDGET(ptr, w) \
 468   (SCROLL_BAR_UNPACK ((ptr)->x_widget_low, (ptr)->x_widget_high, (int) w))
 469
 470 /* Return the inside width of a vertical scroll bar, given the outside
 471    width.  */
 472 #define VERTICAL_SCROLL_BAR_INSIDE_WIDTH(f,width) \
 473   ((width) \
 474    - VERTICAL_SCROLL_BAR_LEFT_BORDER \
 475    - VERTICAL_SCROLL_BAR_RIGHT_BORDER \
 476    - VERTICAL_SCROLL_BAR_WIDTH_TRIM * 2)
 477
 478 /* Return the length of the rectangle within which the top of the
 479    handle must stay.  This isn't equivalent to the inside height,
 480    because the scroll bar handle has a minimum height.
 481
 482    This is the real range of motion for the scroll bar, so when we're
 483    scaling buffer positions to scroll bar positions, we use this, not
 484    VERTICAL_SCROLL_BAR_INSIDE_HEIGHT.  */
 485 #define VERTICAL_SCROLL_BAR_TOP_RANGE(f,height) \
 486   (VERTICAL_SCROLL_BAR_INSIDE_HEIGHT (f, height) - VERTICAL_SCROLL_BAR_MIN_HANDLE)
 487
 488 /* Return the inside height of vertical scroll bar, given the outside
 489    height.  See VERTICAL_SCROLL_BAR_TOP_RANGE too.  */
 490 #define VERTICAL_SCROLL_BAR_INSIDE_HEIGHT(f,height) \
 491   ((height) - VERTICAL_SCROLL_BAR_TOP_BORDER - VERTICAL_SCROLL_BAR_BOTTOM_BORDER)
 492
 493
 494 /* Border widths for scroll bars.
 495
 496    Scroll bar windows don't have any borders; their border width is
 497    set to zero, and we redraw borders ourselves.  This makes the code
 498    a bit cleaner, since we don't have to convert between outside width
 499    (used when relating to the rest of the screen) and inside width
 500    (used when sizing and drawing the scroll bar window itself).
 501
 502    The handle moves up and down/back and forth in a rectangle inset
 503    from the edges of the scroll bar.  These are widths by which we
 504    inset the handle boundaries from the scroll bar edges.  */
 505 #define VERTICAL_SCROLL_BAR_LEFT_BORDER (0)
 506 #define VERTICAL_SCROLL_BAR_RIGHT_BORDER (0)
 507 #define VERTICAL_SCROLL_BAR_TOP_BORDER (vertical_scroll_bar_top_border)
 508 #define VERTICAL_SCROLL_BAR_BOTTOM_BORDER (vertical_scroll_bar_bottom_border)
 509
 510 /* Minimum lengths for scroll bar handles, in pixels.  */
 511 #define VERTICAL_SCROLL_BAR_MIN_HANDLE (vertical_scroll_bar_min_handle)
 512
 513 /* Trimming off a few pixels from each side prevents
 514    text from glomming up against the scroll bar */
 515 #define VERTICAL_SCROLL_BAR_WIDTH_TRIM (0)
 516
 517 \f
 518 struct frame;  /* from frame.h */
 519
 520 extern void w32_fill_rect (struct frame *, HDC, COLORREF, RECT *);
 521 extern void w32_clear_window (struct frame *);
 522
 523 #define w32_fill_area(f,hdc,pix,x,y,nx,ny) \
 524 do { \
 525     RECT rect; \
 526     rect.left = x; \
 527     rect.top = y; \
 528     rect.right = x + nx; \
 529     rect.bottom = y + ny; \
 530     w32_fill_rect (f,hdc,pix,&rect); \
 531 } while (0)
 532
 533 #define w32_clear_rect(f,hdc,lprect) \
 534   w32_fill_rect (f, hdc, FRAME_BACKGROUND_PIXEL (f), lprect)
 535
 536 #define w32_clear_area(f,hdc,px,py,nx,ny) \
 537   w32_fill_area (f, hdc, FRAME_BACKGROUND_PIXEL (f), px, py, nx, ny)
 538
 539 /* Define for earlier versions of Visual C */
 540 #ifndef WM_MOUSEWHEEL
 541 #define WM_MOUSEWHEEL                  (WM_MOUSELAST + 1)
 542 #endif /* WM_MOUSEWHEEL */
 543 #ifndef MSH_MOUSEWHEEL
 544 #define MSH_MOUSEWHEEL                 "MSWHEEL_ROLLMSG"
 545 #endif /* MSH_MOUSEWHEEL */
 546 #ifndef WM_XBUTTONDOWN
 547 #define WM_XBUTTONDOWN                 (WM_MOUSEWHEEL + 1)
 548 #define WM_XBUTTONUP                   (WM_MOUSEWHEEL + 2)
 549 #endif /* WM_XBUTTONDOWN */
 550 #ifndef WM_MOUSEHWHEEL
 551 #define WM_MOUSEHWHEEL                 (WM_MOUSEWHEEL + 4)
 552 #endif /* WM_MOUSEHWHEEL  */
 553 #ifndef WM_APPCOMMAND
 554 #define WM_APPCOMMAND 0x319
 555 #define GET_APPCOMMAND_LPARAM(lParam)  (HIWORD(lParam) & 0x7fff)
 556 #endif
 557 #ifndef WM_UNICHAR
 558 #define WM_UNICHAR 0x109
 559 #endif
 560 #ifndef UNICODE_NOCHAR
 561 #define UNICODE_NOCHAR 0xFFFF
 562 #endif
 563
 564 #define WM_EMACS_START                 (WM_USER + 1)
 565 #define WM_EMACS_KILL                  (WM_EMACS_START + 0)
 566 #define WM_EMACS_CREATEWINDOW          (WM_EMACS_START + 1)
 567 #define WM_EMACS_DONE                  (WM_EMACS_START + 2)
 568 #define WM_EMACS_CREATESCROLLBAR       (WM_EMACS_START + 3)
 569 #define WM_EMACS_SHOWWINDOW            (WM_EMACS_START + 4)
 570 #define WM_EMACS_SETWINDOWPOS          (WM_EMACS_START + 5)
 571 #define WM_EMACS_DESTROYWINDOW         (WM_EMACS_START + 6)
 572 #define WM_EMACS_TRACKPOPUPMENU        (WM_EMACS_START + 7)
 573 #define WM_EMACS_SETFOCUS              (WM_EMACS_START + 8)
 574 #define WM_EMACS_SETFOREGROUND         (WM_EMACS_START + 9)
 575 #define WM_EMACS_SETLOCALE             (WM_EMACS_START + 10)
 576 #define WM_EMACS_SETKEYBOARDLAYOUT     (WM_EMACS_START + 11)
 577 #define WM_EMACS_REGISTER_HOT_KEY      (WM_EMACS_START + 12)
 578 #define WM_EMACS_UNREGISTER_HOT_KEY    (WM_EMACS_START + 13)
 579 #define WM_EMACS_TOGGLE_LOCK_KEY       (WM_EMACS_START + 14)
 580 #define WM_EMACS_TRACK_CARET           (WM_EMACS_START + 15)
 581 #define WM_EMACS_DESTROY_CARET         (WM_EMACS_START + 16)
 582 #define WM_EMACS_SHOW_CARET            (WM_EMACS_START + 17)
 583 #define WM_EMACS_HIDE_CARET            (WM_EMACS_START + 18)
 584 #define WM_EMACS_SETCURSOR             (WM_EMACS_START + 19)
 585 #define WM_EMACS_PAINT                 (WM_EMACS_START + 20)
 586 #define WM_EMACS_BRINGTOTOP            (WM_EMACS_START + 21)
 587 #define WM_EMACS_END                   (WM_EMACS_START + 22)
 588
 589 #define WND_FONTWIDTH_INDEX    (0)
 590 #define WND_LINEHEIGHT_INDEX   (4)
 591 #define WND_BORDER_INDEX       (8)
 592 #define WND_SCROLLBAR_INDEX    (12)
 593 #define WND_BACKGROUND_INDEX   (16)
 594 #define WND_LAST_INDEX         (20)
 595
 596 #define WND_EXTRA_BYTES     (WND_LAST_INDEX)
 597
 598 extern DWORD dwWindowsThreadId;
 599 extern HANDLE hWindowsThread;
 600 extern DWORD dwMainThreadId;
 601 extern HANDLE hMainThread;
 602
 603 typedef struct W32Msg {
 604     MSG msg;
 605     DWORD dwModifiers;
 606     RECT rect;
 607 } W32Msg;
 608
 609 /* Structure for recording message when input thread must return a
 610    result that depends on lisp thread to compute.  Lisp thread can
 611    complete deferred messages out of order.  */
 612 typedef struct deferred_msg
 613 {
 614   struct deferred_msg * next;
 615   W32Msg                w32msg;
 616   LRESULT               result;
 617   int                   completed;
 618 } deferred_msg;
 619
 620 extern CRITICAL_SECTION critsect;
 621
 622 extern void init_crit (void);
 623 extern void delete_crit (void);
 624
 625 extern void signal_quit (void);
 626
 627 #define enter_crit() EnterCriticalSection (&critsect)
 628 #define leave_crit() LeaveCriticalSection (&critsect)
 629
 630 extern void select_palette (struct frame * f, HDC hdc);
 631 extern void deselect_palette (struct frame * f, HDC hdc);
 632 extern HDC get_frame_dc (struct frame * f);
 633 extern int release_frame_dc (struct frame * f, HDC hDC);
 634
 635 extern void drain_message_queue (void);
 636
 637 extern BOOL get_next_msg (W32Msg *, BOOL);
 638 extern BOOL post_msg (W32Msg *);
 639 extern void complete_deferred_msg (HWND hwnd, UINT msg, LRESULT result);
 640
 641 extern BOOL parse_button (int, int, int *, int *);
 642
 643 extern void w32_sys_ring_bell (struct frame *f);
 644 extern void x_delete_display (struct w32_display_info *dpyinfo);
 645
 646 /* Keypad command key support.  W32 doesn't have virtual keys defined
 647    for the function keys on the keypad (they are mapped to the standard
 648    function keys), so we define our own.  */
 649 #define VK_NUMPAD_BEGIN         0x92
 650 #define VK_NUMPAD_CLEAR         (VK_NUMPAD_BEGIN + 0)
 651 #define VK_NUMPAD_ENTER         (VK_NUMPAD_BEGIN + 1)
 652 #define VK_NUMPAD_PRIOR         (VK_NUMPAD_BEGIN + 2)
 653 #define VK_NUMPAD_NEXT          (VK_NUMPAD_BEGIN + 3)
 654 #define VK_NUMPAD_END           (VK_NUMPAD_BEGIN + 4)
 655 #define VK_NUMPAD_HOME          (VK_NUMPAD_BEGIN + 5)
 656 #define VK_NUMPAD_LEFT          (VK_NUMPAD_BEGIN + 6)
 657 #define VK_NUMPAD_UP            (VK_NUMPAD_BEGIN + 7)
 658 #define VK_NUMPAD_RIGHT         (VK_NUMPAD_BEGIN + 8)
 659 #define VK_NUMPAD_DOWN          (VK_NUMPAD_BEGIN + 9)
 660 #define VK_NUMPAD_INSERT        (VK_NUMPAD_BEGIN + 10)
 661 #define VK_NUMPAD_DELETE        (VK_NUMPAD_BEGIN + 11)
 662
 663 #ifndef VK_LWIN
 664 /* Older compiler environments don't have these defined.  */
 665 #define VK_LWIN                 0x5B
 666 #define VK_RWIN                 0x5C
 667 #define VK_APPS                 0x5D
 668 #endif
 669
 670 /* Support for treating Windows and Apps keys as modifiers.  These
 671    constants must not overlap with any of the dwControlKeyState flags in
 672    KEY_EVENT_RECORD.  */
 673 #define LEFT_WIN_PRESSED       0x8000
 674 #define RIGHT_WIN_PRESSED      0x4000
 675 #define APPS_PRESSED           0x2000
 676
 677 /* The current ANSI input codepage for GUI sessions.  */
 678 extern int w32_keyboard_codepage;
 679
 680 /* When compiling on Windows 9x/ME and NT 3.x, the following are not defined
 681    (even though they are supported on 98 and ME.  */
 682 #ifndef WM_MOUSELEAVE
 683 #define WM_MOUSELEAVE 0x02A3
 684 #define TME_LEAVE 0x00000002;
 685
 686 typedef struct tagTRACKMOUSEEVENT
 687 {
 688   DWORD cbSize;
 689   DWORD dwFlags;
 690   HWND hwndTrack;
 691   DWORD dwHoverTime;
 692 } TRACKMOUSEEVENT;
 693 #endif
 694
 695 struct image;
 696 struct face;
 697
 698 XGCValues *XCreateGC (void *, Window, unsigned long, XGCValues *);
 699 struct frame * check_x_frame (Lisp_Object);
 700
 701 typedef DWORD (WINAPI * ClipboardSequence_Proc) (void);
 702 typedef BOOL (WINAPI * AppendMenuW_Proc) (
 703     IN HMENU,
 704     IN UINT,
 705     IN UINT_PTR,
 706     IN LPCWSTR);
 707
 708 extern HWND w32_system_caret_hwnd;
 709 extern int w32_system_caret_height;
 710 extern int w32_system_caret_x;
 711 extern int w32_system_caret_y;