summaryrefslogtreecommitdiffstats
path: root/generic/tkInt.h
blob: f547165d2751b12f47157c0e2901badb177e1fbb (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
/*
 * tkInt.h --
 *
 *	Declarations for things used internally by the Tk
 *	procedures but not exported outside the module.
 *
 * Copyright (c) 1990-1994 The Regents of the University of California.
 * Copyright (c) 1994-1997 Sun Microsystems, Inc.
 * Copyright (c) 1998 by Scriptics Corporation.
 *
 * See the file "license.terms" for information on usage and redistribution
 * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
 *
 * SCCS: %Z% $Id: tkInt.h,v 1.5 1998/07/29 13:14:12 escoffon Exp $ 
 */

#ifndef _TKINT
#define _TKINT

#ifndef _TK
#include "tk.h"
#endif
#ifndef _TCL
#include "tcl.h"
#endif
#ifndef _TKPORT
#include <tkPort.h>
#endif

#ifdef BUILD_tk
# undef EXPORT
# define EXPORT DLLEXPORT
#endif

/*
 * Opaque type declarations:
 */

typedef struct TkColormap TkColormap;
typedef struct TkGrabEvent TkGrabEvent;
typedef struct Tk_PostscriptInfo Tk_PostscriptInfo;
typedef struct TkpCursor_ *TkpCursor;
typedef struct TkRegion_ *TkRegion;
typedef struct TkStressedCmap TkStressedCmap;
typedef struct TkBindInfo_ *TkBindInfo;

/*
 * Procedure types.
 */

typedef int (TkBindEvalProc) _ANSI_ARGS_((ClientData clientData,
	Tcl_Interp *interp, XEvent *eventPtr, Tk_Window tkwin,
	KeySym keySym));
typedef void (TkBindFreeProc) _ANSI_ARGS_((ClientData clientData));
typedef Window (TkClassCreateProc) _ANSI_ARGS_((Tk_Window tkwin,
	Window parent, ClientData instanceData));
typedef void (TkClassGeometryProc) _ANSI_ARGS_((ClientData instanceData));
typedef void (TkClassModalProc) _ANSI_ARGS_((Tk_Window tkwin,
	XEvent *eventPtr));


/*
 * Widget class procedures used to implement platform specific widget
 * behavior.
 */

typedef struct TkClassProcs {
    TkClassCreateProc *createProc;
				/* Procedure to invoke when the
                                   platform-dependent window needs to be
                                   created. */
    TkClassGeometryProc *geometryProc;
				/* Procedure to invoke when the geometry of a
				   window needs to be recalculated as a result
				   of some change in the system. */
    TkClassModalProc *modalProc;
				/* Procedure to invoke after all bindings on a
				   widget have been triggered in order to
				   handle a modal loop. */
} TkClassProcs;

/*
 * One of the following structures is maintained for each cursor in
 * use in the system.  This structure is used by tkCursor.c and the
 * various system specific cursor files.
 */

typedef struct TkCursor {
    Tk_Cursor cursor;		/* System specific identifier for cursor. */
    int refCount;		/* Number of active uses of cursor. */
    Tcl_HashTable *otherTable;	/* Second table (other than idTable) used
				 * to index this entry. */
    Tcl_HashEntry *hashPtr;	/* Entry in otherTable for this structure
				 * (needed when deleting). */
} TkCursor;

/*
 * One of the following structures is maintained for each display
 * containing a window managed by Tk:
 */

typedef struct TkDisplay {
    Display *display;		/* Xlib's info about display. */
    struct TkDisplay *nextPtr;	/* Next in list of all displays. */
    char *name;			/* Name of display (with any screen
				 * identifier removed).  Malloc-ed. */
    Time lastEventTime;		/* Time of last event received for this
				 * display. */

    /*
     * Information used primarily by tkBind.c:
     */

    int bindInfoStale;		/* Non-zero means the variables in this
				 * part of the structure are potentially
				 * incorrect and should be recomputed. */
    unsigned int modeModMask;	/* Has one bit set to indicate the modifier
				 * corresponding to "mode shift".  If no
				 * such modifier, than this is zero. */
    unsigned int metaModMask;	/* Has one bit set to indicate the modifier
				 * corresponding to the "Meta" key.  If no
				 * such modifier, then this is zero. */
    unsigned int altModMask;	/* Has one bit set to indicate the modifier
				 * corresponding to the "Meta" key.  If no
				 * such modifier, then this is zero. */
    enum {LU_IGNORE, LU_CAPS, LU_SHIFT} lockUsage;
				/* Indicates how to interpret lock modifier. */
    int numModKeyCodes;		/* Number of entries in modKeyCodes array
				 * below. */
    KeyCode *modKeyCodes;	/* Pointer to an array giving keycodes for
				 * all of the keys that have modifiers
				 * associated with them.  Malloc'ed, but
				 * may be NULL. */

    /*
     * Information used by tkError.c only:
     */

    struct TkErrorHandler *errorPtr;
				/* First in list of error handlers
				 * for this display.  NULL means
				 * no handlers exist at present. */
    int deleteCount;		/* Counts # of handlers deleted since
				 * last time inactive handlers were
				 * garbage-collected.  When this number
				 * gets big, handlers get cleaned up. */

    /*
     * Information used by tkSend.c only:
     */

    Tk_Window commTkwin;	/* Window used for communication
				 * between interpreters during "send"
				 * commands.  NULL means send info hasn't
				 * been initialized yet. */
    Atom commProperty;		/* X's name for comm property. */
    Atom registryProperty;	/* X's name for property containing
				 * registry of interpreter names. */
    Atom appNameProperty;	/* X's name for property used to hold the
				 * application name on each comm window. */

    /*
     * Information used by tkSelect.c and tkClipboard.c only:
     */

    struct TkSelectionInfo *selectionInfoPtr;
				/* First in list of selection information
				 * records.  Each entry contains information
				 * about the current owner of a particular
				 * selection on this display. */
    Atom multipleAtom;		/* Atom for MULTIPLE.  None means
				 * selection stuff isn't initialized. */
    Atom incrAtom;		/* Atom for INCR. */
    Atom targetsAtom;		/* Atom for TARGETS. */
    Atom timestampAtom;		/* Atom for TIMESTAMP. */
    Atom textAtom;		/* Atom for TEXT. */
    Atom compoundTextAtom;	/* Atom for COMPOUND_TEXT. */
    Atom applicationAtom;	/* Atom for TK_APPLICATION. */
    Atom windowAtom;		/* Atom for TK_WINDOW. */
    Atom clipboardAtom;		/* Atom for CLIPBOARD. */

    Tk_Window clipWindow;	/* Window used for clipboard ownership and to
				 * retrieve selections between processes. NULL
				 * means clipboard info hasn't been
				 * initialized. */
    int clipboardActive;	/* 1 means we currently own the clipboard
				 * selection, 0 means we don't. */
    struct TkMainInfo *clipboardAppPtr;
				/* Last application that owned clipboard. */
    struct TkClipboardTarget *clipTargetPtr;
				/* First in list of clipboard type information
				 * records.  Each entry contains information
				 * about the buffers for a given selection
				 * target. */

    /*
     * Information used by tkAtom.c only:
     */

    int atomInit;		/* 0 means stuff below hasn't been
				 * initialized yet. */
    Tcl_HashTable nameTable;	/* Maps from names to Atom's. */
    Tcl_HashTable atomTable;	/* Maps from Atom's back to names. */

    /*
     * Information used by tkCursor.c only:
     */

    Font cursorFont;		/* Font to use for standard cursors.
				 * None means font not loaded yet. */

    /*
     * Information used by tkGrab.c only:
     */

    struct TkWindow *grabWinPtr;
				/* Window in which the pointer is currently
				 * grabbed, or NULL if none. */
    struct TkWindow *eventualGrabWinPtr;
				/* Value that grabWinPtr will have once the
				 * grab event queue (below) has been
				 * completely emptied. */
    struct TkWindow *buttonWinPtr;
				/* Window in which first mouse button was
				 * pressed while grab was in effect, or NULL
				 * if no such press in effect. */
    struct TkWindow *serverWinPtr;
				/* If no application contains the pointer then
				 * this is NULL.  Otherwise it contains the
				 * last window for which we've gotten an
				 * Enter or Leave event from the server (i.e.
				 * the last window known to have contained
				 * the pointer).  Doesn't reflect events
				 * that were synthesized in tkGrab.c. */
    TkGrabEvent *firstGrabEventPtr;
				/* First in list of enter/leave events
				 * synthesized by grab code.  These events
				 * must be processed in order before any other
				 * events are processed.  NULL means no such
				 * events. */
    TkGrabEvent *lastGrabEventPtr;
				/* Last in list of synthesized events, or NULL
				 * if list is empty. */
    int grabFlags;		/* Miscellaneous flag values.  See definitions
				 * in tkGrab.c. */

    /*
     * Information used by tkXId.c only:
     */

    struct TkIdStack *idStackPtr;
				/* First in list of chunks of free resource
				 * identifiers, or NULL if there are no free
				 * resources. */
    XID (*defaultAllocProc) _ANSI_ARGS_((Display *display));
				/* Default resource allocator for display. */
    struct TkIdStack *windowStackPtr;
				/* First in list of chunks of window
				 * identifers that can't be reused right
				 * now. */
    int idCleanupScheduled;	/* 1 means a call to WindowIdCleanup has
				 * already been scheduled, 0 means it
				 * hasn't. */

    /*
     * Information maintained by tkWindow.c for use later on by tkXId.c:
     */


    int destroyCount;		/* Number of Tk_DestroyWindow operations
				 * in progress. */
    unsigned long lastDestroyRequest;
				/* Id of most recent XDestroyWindow request;
				 * can re-use ids in windowStackPtr when
				 * server has seen this request and event
				 * queue is empty. */

    /*
     * Information used by tkVisual.c only:
     */

    TkColormap *cmapPtr;	/* First in list of all non-default colormaps
				 * allocated for this display. */

    /*
     * Information used by tkFocus.c only:
     */

    struct TkWindow *implicitWinPtr;
				/* If the focus arrived at a toplevel window
				 * implicitly via an Enter event (rather
				 * than via a FocusIn event), this points
				 * to the toplevel window.  Otherwise it is
				 * NULL. */
    struct TkWindow *focusPtr;	/* Points to the window on this display that
				 * should be receiving keyboard events.  When
				 * multiple applications on the display have
				 * the focus, this will refer to the
				 * innermost window in the innermost
				 * application.  This information isn't used
				 * under Unix or Windows, but it's needed on
				 * the Macintosh. */

    /*
     * Used by tkColor.c only:
     */

    TkStressedCmap *stressPtr;	/* First in list of colormaps that have
				 * filled up, so we have to pick an
				 * approximate color. */

    /*
     * Used by tkEvent.c only:
     */

    struct TkWindowEvent *delayedMotionPtr;
				/* Points to a malloc-ed motion event
				 * whose processing has been delayed in
				 * the hopes that another motion event
				 * will come along right away and we can
				 * merge the two of them together.  NULL
				 * means that there is no delayed motion
				 * event. */

    /*
     * Miscellaneous information:
     */

#ifdef TK_USE_INPUT_METHODS
    XIM inputMethod;		/* Input method for this display */
#endif /* TK_USE_INPUT_METHODS */
    Tcl_HashTable winTable;	/* Maps from X window ids to TkWindow ptrs. */

    int refCount;		/* Reference count of how many Tk applications
                                 * are using this display. Used to clean up
                                 * the display when we no longer have any
                                 * Tk applications using it.
                                 */
} TkDisplay;

/*
 * One of the following structures exists for each error handler
 * created by a call to Tk_CreateErrorHandler.  The structure
 * is managed by tkError.c.
 */

typedef struct TkErrorHandler {
    TkDisplay *dispPtr;		/* Display to which handler applies. */
    unsigned long firstRequest;	/* Only errors with serial numbers
				 * >= to this are considered. */
    unsigned long lastRequest;	/* Only errors with serial numbers
				 * <= to this are considered.  This
				 * field is filled in when XUnhandle
				 * is called.  -1 means XUnhandle
				 * hasn't been called yet. */
    int error;			/* Consider only errors with this
				 * error_code (-1 means consider
				 * all errors). */
    int request;		/* Consider only errors with this
				 * major request code (-1 means
				 * consider all major codes). */
    int minorCode;		/* Consider only errors with this
				 * minor request code (-1 means
				 * consider all minor codes). */
    Tk_ErrorProc *errorProc;	/* Procedure to invoke when a matching
				 * error occurs.  NULL means just ignore
				 * errors. */
    ClientData clientData;	/* Arbitrary value to pass to
				 * errorProc. */
    struct TkErrorHandler *nextPtr;
				/* Pointer to next older handler for
				 * this display, or NULL for end of
				 * list. */
} TkErrorHandler;

/*
 * One of the following structures exists for each event handler
 * created by calling Tk_CreateEventHandler.  This information
 * is used by tkEvent.c only.
 */

typedef struct TkEventHandler {
    unsigned long mask;		/* Events for which to invoke
				 * proc. */
    Tk_EventProc *proc;		/* Procedure to invoke when an event
				 * in mask occurs. */
    ClientData clientData;	/* Argument to pass to proc. */
    struct TkEventHandler *nextPtr;
				/* Next in list of handlers
				 * associated with window (NULL means
				 * end of list). */
} TkEventHandler;

/*
 * Tk keeps one of the following data structures for each main
 * window (created by a call to Tk_CreateMainWindow).  It stores
 * information that is shared by all of the windows associated
 * with a particular main window.
 */

typedef struct TkMainInfo {
    int refCount;		/* Number of windows whose "mainPtr" fields
				 * point here.  When this becomes zero, can
				 * free up the structure (the reference
				 * count is zero because windows can get
				 * deleted in almost any order;  the main
				 * window isn't necessarily the last one
				 * deleted). */
    struct TkWindow *winPtr;	/* Pointer to main window. */
    Tcl_Interp *interp;		/* Interpreter associated with application. */
    Tcl_HashTable nameTable;	/* Hash table mapping path names to TkWindow
				 * structs for all windows related to this
				 * main window.  Managed by tkWindow.c. */
    Tk_BindingTable bindingTable;
				/* Used in conjunction with "bind" command
				 * to bind events to Tcl commands. */
    TkBindInfo bindInfo;	/* Information used by tkBind.c on a per
				 * interpreter basis. */
    struct TkFontInfo *fontInfoPtr;
				/* Hold named font tables.  Used only by
				 * tkFont.c. */

    /*
     * Information used only by tkFocus.c and tk*Embed.c:
     */

    struct TkToplevelFocusInfo *tlFocusPtr;
				/* First in list of records containing focus
				 * information for each top-level in the
				 * application.  Used only by tkFocus.c. */
    struct TkDisplayFocusInfo *displayFocusPtr;
				/* First in list of records containing focus
				 * information for each display that this
				 * application has ever used.  Used only
				 * by tkFocus.c. */

    struct ElArray *optionRootPtr;
				/* Top level of option hierarchy for this
				 * main window.  NULL means uninitialized.
				 * Managed by tkOption.c. */
    Tcl_HashTable imageTable;	/* Maps from image names to Tk_ImageMaster
				 * structures.  Managed by tkImage.c. */
    int strictMotif;		/* This is linked to the tk_strictMotif
				 * global variable. */
    struct TkMainInfo *nextPtr;	/* Next in list of all main windows managed by
				 * this process. */
} TkMainInfo;

/*
 * Tk keeps the following data structure for each of it's builtin
 * bitmaps.  This structure is only used by tkBitmap.c and other
 * platform specific bitmap files.
 */

typedef struct {
    char *source;		/* Bits for bitmap. */
    int width, height;		/* Dimensions of bitmap. */
    int native;			/* 0 means generic (X style) bitmap,
    				 * 1 means native style bitmap. */
} TkPredefBitmap;

/*
 * Tk keeps one of the following structures for each window.
 * Some of the information (like size and location) is a shadow
 * of information managed by the X server, and some is special
 * information used here, such as event and geometry management
 * information.  This information is (mostly) managed by tkWindow.c.
 * WARNING: the declaration below must be kept consistent with the
 * Tk_FakeWin structure in tk.h.  If you change one, be sure to
 * change the other!!
 */

typedef struct TkWindow {

    /*
     * Structural information:
     */

    Display *display;		/* Display containing window. */
    TkDisplay *dispPtr;		/* Tk's information about display
				 * for window. */
    int screenNum;		/* Index of screen for window, among all
				 * those for dispPtr. */
    Visual *visual;		/* Visual to use for window.  If not default,
				 * MUST be set before X window is created. */
    int depth;			/* Number of bits/pixel. */
    Window window;		/* X's id for window.   NULL means window
				 * hasn't actually been created yet, or it's
				 * been deleted. */
    struct TkWindow *childList;	/* First in list of child windows,
				 * or NULL if no children.  List is in
				 * stacking order, lowest window first.*/
    struct TkWindow *lastChildPtr;
				/* Last in list of child windows (highest
				 * in stacking order), or NULL if no
				 * children. */
    struct TkWindow *parentPtr;	/* Pointer to parent window (logical
				 * parent, not necessarily X parent).  NULL
				 * means either this is the main window, or
				 * the window's parent has already been
				 * deleted. */
    struct TkWindow *nextPtr;	/* Next higher sibling (in stacking order)
				 * in list of children with same parent.  NULL
				 * means end of list. */
    TkMainInfo *mainPtr;	/* Information shared by all windows
				 * associated with a particular main
				 * window.  NULL means this window is
				 * a rogue that isn't associated with
				 * any application (at present, this
				 * only happens for the dummy windows
				 * used for "send" communication).  */

    /*
     * Name and type information for the window:
     */

    char *pathName;		/* Path name of window (concatenation
				 * of all names between this window and
				 * its top-level ancestor).  This is a
				 * pointer into an entry in
				 * mainPtr->nameTable.  NULL means that
				 * the window hasn't been completely
				 * created yet. */
    Tk_Uid nameUid;		/* Name of the window within its parent
				 * (unique within the parent). */
    Tk_Uid classUid;		/* Class of the window.  NULL means window
				 * hasn't been given a class yet. */

    /*
     * Geometry and other attributes of window.  This information
     * may not be updated on the server immediately;  stuff that
     * hasn't been reflected in the server yet is called "dirty".
     * At present, information can be dirty only if the window
     * hasn't yet been created.
     */

    XWindowChanges changes;	/* Geometry and other info about
				 * window. */
    unsigned int dirtyChanges;	/* Bits indicate fields of "changes"
				 * that are dirty. */
    XSetWindowAttributes atts;	/* Current attributes of window. */
    unsigned long dirtyAtts;	/* Bits indicate fields of "atts"
				 * that are dirty. */

    unsigned int flags;		/* Various flag values:  these are all
				 * defined in tk.h (confusing, but they're
				 * needed there for some query macros). */

    /*
     * Information kept by the event manager (tkEvent.c):
     */

    TkEventHandler *handlerList;/* First in list of event handlers
				 * declared for this window, or
				 * NULL if none. */
#ifdef TK_USE_INPUT_METHODS
    XIC inputContext;		/* Input context (for input methods). */
#endif /* TK_USE_INPUT_METHODS */

    /*
     * Information used for event bindings (see "bind" and "bindtags"
     * commands in tkCmds.c):
     */

    ClientData *tagPtr;		/* Points to array of tags used for bindings
				 * on this window.  Each tag is a Tk_Uid.
				 * Malloc'ed.  NULL means no tags. */
    int numTags;		/* Number of tags at *tagPtr. */

    /*
     * Information used by tkOption.c to manage options for the
     * window.
     */

    int optionLevel;		/* -1 means no option information is
				 * currently cached for this window.
				 * Otherwise this gives the level in
				 * the option stack at which info is
				 * cached. */
    /*
     * Information used by tkSelect.c to manage the selection.
     */

    struct TkSelHandler *selHandlerList;
				/* First in list of handlers for
				 * returning the selection in various
				 * forms. */

    /*
     * Information used by tkGeometry.c for geometry management.
     */

    Tk_GeomMgr *geomMgrPtr;	/* Information about geometry manager for
				 * this window. */
    ClientData geomData;	/* Argument for geometry manager procedures. */
    int reqWidth, reqHeight;	/* Arguments from last call to
				 * Tk_GeometryRequest, or 0's if
				 * Tk_GeometryRequest hasn't been
				 * called. */
    int internalBorderWidth;	/* Width of internal border of window
				 * (0 means no internal border).  Geometry
				 * managers should not normally place children
				 * on top of the border. */

    /*
     * Information maintained by tkWm.c for window manager communication.
     */

    struct TkWmInfo *wmInfoPtr;	/* For top-level windows (and also
				 * for special Unix menubar and wrapper
				 * windows), points to structure with
				 * wm-related info (see tkWm.c).  For
				 * other windows, this is NULL. */

    /*
     * Information used by widget classes.
     */

    TkClassProcs *classProcsPtr;
    ClientData instanceData;

    /*
     * Platform specific information private to each port.
     */

    struct TkWindowPrivate *privatePtr;
} TkWindow;

/*
 * The following structure is used as a two way map between integers
 * and strings, usually to map between an internal C representation
 * and the strings used in Tcl.
 */

typedef struct TkStateMap {
    int numKey;			/* Integer representation of a value. */
    char *strKey;		/* String representation of a value. */
} TkStateMap;

/*
 * This structure is used by the Mac and Window porting layers as
 * the internal representation of a clip_mask in a GC.
 */

typedef struct TkpClipMask {
    int type;			/* One of TKP_CLIP_PIXMAP or TKP_CLIP_REGION */
    union {
	Pixmap pixmap;
	TkRegion region;
    } value;
} TkpClipMask;

#define TKP_CLIP_PIXMAP 0
#define TKP_CLIP_REGION 1

/*
 * Pointer to first entry in list of all displays currently known.
 */

extern TkDisplay *tkDisplayList;

/*
 * Return values from TkGrabState:
 */

#define TK_GRAB_NONE		0
#define TK_GRAB_IN_TREE		1
#define TK_GRAB_ANCESTOR	2
#define TK_GRAB_EXCLUDED	3

/*
 * The macro below is used to modify a "char" value (e.g. by casting
 * it to an unsigned character) so that it can be used safely with
 * macros such as isspace.
 */

#define UCHAR(c) ((unsigned char) (c))

/*
 * The following symbol is used in the mode field of FocusIn events
 * generated by an embedded application to request the input focus from
 * its container.
 */

#define EMBEDDED_APP_WANTS_FOCUS (NotifyNormal + 20)

/*
 * Miscellaneous variables shared among Tk modules but not exported
 * to the outside world:
 */

extern Tk_Uid			tkActiveUid;
extern Tk_ImageType		tkBitmapImageType;
extern Tk_Uid			tkDisabledUid;
extern Tk_PhotoImageFormat	tkImgFmtGIF;
extern void			(*tkHandleEventProc) _ANSI_ARGS_((
    				    XEvent* eventPtr));
extern Tk_PhotoImageFormat	tkImgFmtPPM;
extern TkMainInfo		*tkMainWindowList;
extern Tk_Uid			tkNormalUid;
extern Tk_ImageType		tkPhotoImageType;
extern Tcl_HashTable		tkPredefBitmapTable;
extern int			tkSendSerial;

/*
 * Internal procedures shared among Tk modules but not exported
 * to the outside world:
 */

EXTERN char *		TkAlignImageData _ANSI_ARGS_((XImage *image,
			    int alignment, int bitOrder));
EXTERN TkWindow *	TkAllocWindow _ANSI_ARGS_((TkDisplay *dispPtr,
			    int screenNum, TkWindow *parentPtr));
EXTERN int		TkAreaToPolygon _ANSI_ARGS_((double *polyPtr,
			    int numPoints, double *rectPtr));
EXTERN void		TkBezierPoints _ANSI_ARGS_((double control[],
			    int numSteps, double *coordPtr));
EXTERN void		TkBezierScreenPoints _ANSI_ARGS_((Tk_Canvas canvas,
			    double control[], int numSteps,
			    XPoint *xPointPtr));
EXTERN void		TkBindDeadWindow _ANSI_ARGS_((TkWindow *winPtr));
EXTERN void		TkBindEventProc _ANSI_ARGS_((TkWindow *winPtr,
			    XEvent *eventPtr));
EXTERN void		TkBindFree _ANSI_ARGS_((TkMainInfo *mainPtr));
EXTERN void		TkBindInit _ANSI_ARGS_((TkMainInfo *mainPtr));
EXTERN void		TkChangeEventWindow _ANSI_ARGS_((XEvent *eventPtr,
			    TkWindow *winPtr));
#ifndef TkClipBox
EXTERN void		TkClipBox _ANSI_ARGS_((TkRegion rgn,
			    XRectangle* rect_return));
#endif
EXTERN int		TkClipInit _ANSI_ARGS_((Tcl_Interp *interp,
			    TkDisplay *dispPtr));
EXTERN void		TkComputeAnchor _ANSI_ARGS_((Tk_Anchor anchor,
			    Tk_Window tkwin, int padX, int padY,
			    int innerWidth, int innerHeight, int *xPtr,
			    int *yPtr));
EXTERN int		TkCopyAndGlobalEval _ANSI_ARGS_((Tcl_Interp *interp,
			    char *script));
EXTERN unsigned long	TkCreateBindingProcedure _ANSI_ARGS_((
			    Tcl_Interp *interp, Tk_BindingTable bindingTable,
			    ClientData object, char *eventString,
			    TkBindEvalProc *evalProc, TkBindFreeProc *freeProc,
			    ClientData clientData));
EXTERN Pixmap		TkCreateBitmapFromData _ANSI_ARGS_((Display* display,
			    Drawable d, CONST char* data,
			    unsigned int width, unsigned int height));
EXTERN TkCursor *	TkCreateCursorFromData _ANSI_ARGS_((Tk_Window tkwin,
			    char *source, char *mask, int width, int height,
			    int xHot, int yHot, XColor fg, XColor bg));
EXTERN int		TkCreateFrame _ANSI_ARGS_((ClientData clientData,
			    Tcl_Interp *interp, int argc, char **argv,
			    int toplevel, char *appName));
EXTERN Tk_Window	TkCreateMainWindow _ANSI_ARGS_((Tcl_Interp *interp,
			    char *screenName, char *baseName));
#ifndef TkCreateRegion
EXTERN TkRegion		TkCreateRegion _ANSI_ARGS_((void));
#endif
EXTERN Time		TkCurrentTime _ANSI_ARGS_((TkDisplay *dispPtr));
EXTERN int		TkDeadAppCmd _ANSI_ARGS_((ClientData clientData,
			    Tcl_Interp *interp, int argc, char **argv));
EXTERN void		TkDeleteAllImages _ANSI_ARGS_((TkMainInfo *mainPtr));
#ifndef TkDestroyRegion
EXTERN void		TkDestroyRegion _ANSI_ARGS_((TkRegion rgn));
#endif
EXTERN void		TkDoConfigureNotify _ANSI_ARGS_((TkWindow *winPtr));
EXTERN void		TkDrawInsetFocusHighlight _ANSI_ARGS_((
			    Tk_Window tkwin, GC gc, int width,
			    Drawable drawable, int padding));
EXTERN void		TkEventCleanupProc _ANSI_ARGS_((
			    ClientData clientData, Tcl_Interp *interp));
EXTERN void		TkEventDeadWindow _ANSI_ARGS_((TkWindow *winPtr));
EXTERN void		TkFillPolygon _ANSI_ARGS_((Tk_Canvas canvas,
			    double *coordPtr, int numPoints, Display *display,
			    Drawable drawable, GC gc, GC outlineGC));
EXTERN int		TkFindStateNum _ANSI_ARGS_((Tcl_Interp *interp,
			    CONST char *option, CONST TkStateMap *mapPtr,
			    CONST char *strKey));
EXTERN char *		TkFindStateString _ANSI_ARGS_((
			    CONST TkStateMap *mapPtr, int numKey));
EXTERN void		TkFocusDeadWindow _ANSI_ARGS_((TkWindow *winPtr));
EXTERN int		TkFocusFilterEvent _ANSI_ARGS_((TkWindow *winPtr,
			    XEvent *eventPtr));
EXTERN TkWindow *	TkFocusKeyEvent _ANSI_ARGS_((TkWindow *winPtr,
			    XEvent *eventPtr));
EXTERN void		TkFontPkgInit _ANSI_ARGS_((TkMainInfo *mainPtr));
EXTERN void		TkFontPkgFree _ANSI_ARGS_((TkMainInfo *mainPtr));
EXTERN void		TkFreeBindingTags _ANSI_ARGS_((TkWindow *winPtr));
EXTERN void		TkFreeCursor _ANSI_ARGS_((TkCursor *cursorPtr));
EXTERN void		TkFreeWindowId _ANSI_ARGS_((TkDisplay *dispPtr,
			    Window w));
EXTERN void		TkGenerateActivateEvents _ANSI_ARGS_((
			    TkWindow *winPtr, int active));
EXTERN char *		TkGetBitmapData _ANSI_ARGS_((Tcl_Interp *interp,
			    char *string, char *fileName, int *widthPtr,
			    int *heightPtr, int *hotXPtr, int *hotYPtr));
EXTERN void		TkGetButtPoints _ANSI_ARGS_((double p1[], double p2[],
			    double width, int project, double m1[],
			    double m2[]));
EXTERN TkCursor *	TkGetCursorByName _ANSI_ARGS_((Tcl_Interp *interp,
			    Tk_Window tkwin, Tk_Uid string));
EXTERN char *		TkGetDefaultScreenName _ANSI_ARGS_((Tcl_Interp *interp,
			    char *screenName));
EXTERN TkDisplay *	TkGetDisplay _ANSI_ARGS_((Display *display));
EXTERN int		TkGetDisplayOf _ANSI_ARGS_((Tcl_Interp *interp,
			    int objc, Tcl_Obj *CONST objv[],
			    Tk_Window *tkwinPtr));
EXTERN TkWindow *	TkGetFocusWin _ANSI_ARGS_((TkWindow *winPtr));
EXTERN int		TkGetInterpNames _ANSI_ARGS_((Tcl_Interp *interp,
			    Tk_Window tkwin));
EXTERN int		TkGetMiterPoints _ANSI_ARGS_((double p1[], double p2[],
			    double p3[], double width, double m1[],
			    double m2[]));
#ifndef TkGetNativeProlog
EXTERN int		TkGetNativeProlog _ANSI_ARGS_((Tcl_Interp *interp));
#endif
EXTERN void		TkGetPointerCoords _ANSI_ARGS_((Tk_Window tkwin,
			    int *xPtr, int *yPtr));
EXTERN int		TkGetProlog _ANSI_ARGS_((Tcl_Interp *interp));
EXTERN void		TkGetServerInfo _ANSI_ARGS_((Tcl_Interp *interp,
			    Tk_Window tkwin));
EXTERN void		TkGrabDeadWindow _ANSI_ARGS_((TkWindow *winPtr));
EXTERN int		TkGrabState _ANSI_ARGS_((TkWindow *winPtr));
EXTERN TkWindow *      	TkIDToWindow _ANSI_ARGS_((Window window, 
			    TkDisplay *display));
EXTERN void		TkIncludePoint _ANSI_ARGS_((Tk_Item *itemPtr,
			    double *pointPtr));
EXTERN void		TkInitXId _ANSI_ARGS_((TkDisplay *dispPtr));
EXTERN void		TkInOutEvents _ANSI_ARGS_((XEvent *eventPtr,
			    TkWindow *sourcePtr, TkWindow *destPtr,
			    int leaveType, int enterType,
			    Tcl_QueuePosition position));
EXTERN void		TkInstallFrameMenu _ANSI_ARGS_((Tk_Window tkwin));
#ifndef TkIntersectRegion
EXTERN void		TkIntersectRegion _ANSI_ARGS_((TkRegion sra,
			    TkRegion srcb, TkRegion dr_return));
#endif
EXTERN char *		TkKeysymToString _ANSI_ARGS_((KeySym keysym));
EXTERN int		TkLineToArea _ANSI_ARGS_((double end1Ptr[2],
			    double end2Ptr[2], double rectPtr[4]));
EXTERN double		TkLineToPoint _ANSI_ARGS_((double end1Ptr[2],
			    double end2Ptr[2], double pointPtr[2]));
EXTERN int		TkListAppend _ANSI_ARGS_((void **headPtrPtr,
			    void *itemPtr, size_t size));
EXTERN int		TkListDelete _ANSI_ARGS_((void **headPtrPtr,
			    void *itemPtr, size_t size));
EXTERN void *		TkListFind _ANSI_ARGS_((void *headPtr, void *itemPtr,
			    size_t size));
EXTERN int		TkMakeBezierCurve _ANSI_ARGS_((Tk_Canvas canvas,
			    double *pointPtr, int numPoints, int numSteps,
			    XPoint xPoints[], double dblPoints[]));
EXTERN void		TkMakeBezierPostscript _ANSI_ARGS_((Tcl_Interp *interp,
			    Tk_Canvas canvas, double *pointPtr,
			    int numPoints));
EXTERN void		TkOptionClassChanged _ANSI_ARGS_((TkWindow *winPtr));
EXTERN void		TkOptionDeadWindow _ANSI_ARGS_((TkWindow *winPtr));
EXTERN int		TkOvalToArea _ANSI_ARGS_((double *ovalPtr,
			    double *rectPtr));
EXTERN double		TkOvalToPoint _ANSI_ARGS_((double ovalPtr[4],
			    double width, int filled, double pointPtr[2]));
EXTERN int		TkpChangeFocus _ANSI_ARGS_((TkWindow *winPtr,
			    int force));
EXTERN void		TkpCloseDisplay _ANSI_ARGS_((TkDisplay *dispPtr));
EXTERN void		TkpClaimFocus _ANSI_ARGS_((TkWindow *topLevelPtr,
			    int force));
#ifndef TkpCmapStressed
EXTERN int		TkpCmapStressed _ANSI_ARGS_((Tk_Window tkwin,
			    Colormap colormap));
#endif
#ifndef TkpCreateNativeBitmap
EXTERN Pixmap		TkpCreateNativeBitmap _ANSI_ARGS_((Display *display,
			    char * source));
#endif
#ifndef TkpDefineNativeBitmaps
EXTERN void		TkpDefineNativeBitmaps _ANSI_ARGS_((void));
#endif
EXTERN void		TkpDisplayWarning _ANSI_ARGS_((char *msg,
			    char *title));
EXTERN void		TkpGetAppName _ANSI_ARGS_((Tcl_Interp *interp,
			    Tcl_DString *name));
EXTERN unsigned long	TkpGetMS _ANSI_ARGS_((void));
#ifndef TkpGetNativeAppBitmap
EXTERN Pixmap		TkpGetNativeAppBitmap _ANSI_ARGS_((Display *display,
			    char *name, int *width, int *height));
#endif
EXTERN TkWindow *	TkpGetOtherWindow _ANSI_ARGS_((TkWindow *winPtr));
EXTERN TkWindow *	TkpGetWrapperWindow _ANSI_ARGS_((TkWindow *winPtr));
EXTERN int		TkpInit _ANSI_ARGS_((Tcl_Interp *interp));
EXTERN void		TkpInitializeMenuBindings _ANSI_ARGS_((
			    Tcl_Interp *interp, Tk_BindingTable bindingTable));
EXTERN void		TkpMakeContainer _ANSI_ARGS_((Tk_Window tkwin));
EXTERN void		TkpMakeMenuWindow _ANSI_ARGS_((Tk_Window tkwin,
			    int transient));
EXTERN Window		TkpMakeWindow _ANSI_ARGS_((TkWindow *winPtr,
			    Window parent));
EXTERN void		TkpMenuNotifyToplevelCreate _ANSI_ARGS_((
			    Tcl_Interp *, char *menuName));
EXTERN TkDisplay *	TkpOpenDisplay _ANSI_ARGS_((char *display_name));
EXTERN void		TkPointerDeadWindow _ANSI_ARGS_((TkWindow *winPtr));
EXTERN int		TkPointerEvent _ANSI_ARGS_((XEvent *eventPtr,
			    TkWindow *winPtr));
EXTERN int		TkPolygonToArea _ANSI_ARGS_((double *polyPtr,
			    int numPoints, double *rectPtr));
EXTERN double		TkPolygonToPoint _ANSI_ARGS_((double *polyPtr,
			    int numPoints, double *pointPtr));
EXTERN int		TkPositionInTree _ANSI_ARGS_((TkWindow *winPtr,
			    TkWindow *treePtr));
#ifndef TkpPrintWindowId
EXTERN void		TkpPrintWindowId _ANSI_ARGS_((char *buf,
			    Window window));
#endif
EXTERN void		TkpRedirectKeyEvent _ANSI_ARGS_((TkWindow *winPtr,
			    XEvent *eventPtr));
#ifndef TkpScanWindowId
EXTERN int		TkpScanWindowId _ANSI_ARGS_((Tcl_Interp *interp,
			    char *string, int *idPtr));
#endif
EXTERN void		TkpSetCapture _ANSI_ARGS_((TkWindow *winPtr));
EXTERN void		TkpSetCursor _ANSI_ARGS_((TkpCursor cursor));
EXTERN void		TkpSetMainMenubar _ANSI_ARGS_((Tcl_Interp *interp,
			    Tk_Window tkwin, char *menuName));
#ifndef TkpSync
EXTERN void		TkpSync _ANSI_ARGS_((Display *display));
#endif
EXTERN int		TkpTestembedCmd _ANSI_ARGS_((ClientData clientData,
			    Tcl_Interp *interp, int argc, char **argv));
EXTERN int		TkpUseWindow _ANSI_ARGS_((Tcl_Interp *interp,
			    Tk_Window tkwin, char *string));
#ifndef TkPutImage
EXTERN void		TkPutImage _ANSI_ARGS_((unsigned long *colors,
			    int ncolors, Display* display, Drawable d,
			    GC gc, XImage* image, int src_x, int src_y,
			    int dest_x, int dest_y, unsigned int width,
			    unsigned int height));
#endif
EXTERN int		TkpWindowWasRecentlyDeleted _ANSI_ARGS_((Window win,
			    TkDisplay *dispPtr));
EXTERN void		TkpWmSetState _ANSI_ARGS_((TkWindow *winPtr,
			    int state));
EXTERN void		TkQueueEventForAllChildren _ANSI_ARGS_((
			    TkWindow *winPtr, XEvent *eventPtr));
EXTERN int		TkReadBitmapFile _ANSI_ARGS_((Display* display,
			    Drawable d, CONST char* filename,
			    unsigned int* width_return,
			    unsigned int* height_return,
			    Pixmap* bitmap_return,
			    int* x_hot_return, int* y_hot_return));
#ifndef TkRectInRegion
EXTERN int		TkRectInRegion _ANSI_ARGS_((TkRegion rgn,
			    int x, int y, unsigned int width,
			    unsigned int height));
#endif
EXTERN int		TkScrollWindow _ANSI_ARGS_((Tk_Window tkwin, GC gc,
			    int x, int y, int width, int height, int dx,
			    int dy, TkRegion damageRgn));
EXTERN void		TkSelDeadWindow _ANSI_ARGS_((TkWindow *winPtr));
EXTERN void		TkSelEventProc _ANSI_ARGS_((Tk_Window tkwin,
			    XEvent *eventPtr));
EXTERN void		TkSelInit _ANSI_ARGS_((Tk_Window tkwin));
EXTERN void		TkSelPropProc _ANSI_ARGS_((XEvent *eventPtr));
EXTERN void		TkSetClassProcs _ANSI_ARGS_((Tk_Window tkwin,
			    TkClassProcs *procs, ClientData instanceData));
#ifndef TkSetPixmapColormap
EXTERN void		TkSetPixmapColormap _ANSI_ARGS_((Pixmap pixmap,
			    Colormap colormap));
#endif
#ifndef TkSetRegion
EXTERN void		TkSetRegion _ANSI_ARGS_((Display* display, GC gc,
			    TkRegion rgn));
#endif
EXTERN void		TkSetWindowMenuBar _ANSI_ARGS_((Tcl_Interp *interp,
			    Tk_Window tkwin, char *oldMenuName, 
			    char *menuName));
EXTERN KeySym		TkStringToKeysym _ANSI_ARGS_((char *name));
EXTERN int		TkThickPolyLineToArea _ANSI_ARGS_((double *coordPtr,
			    int numPoints, double width, int capStyle,
			    int joinStyle, double *rectPtr));
#ifndef TkUnionRectWithRegion
EXTERN void		TkUnionRectWithRegion _ANSI_ARGS_((XRectangle* rect,
			    TkRegion src, TkRegion dr_return));
#endif
EXTERN void		TkWmAddToColormapWindows _ANSI_ARGS_((
			    TkWindow *winPtr));
EXTERN void		TkWmDeadWindow _ANSI_ARGS_((TkWindow *winPtr));
EXTERN TkWindow *	TkWmFocusToplevel _ANSI_ARGS_((TkWindow *winPtr));
EXTERN void		TkWmMapWindow _ANSI_ARGS_((TkWindow *winPtr));
EXTERN void		TkWmNewWindow _ANSI_ARGS_((TkWindow *winPtr));
EXTERN void		TkWmProtocolEventProc _ANSI_ARGS_((TkWindow *winPtr,
			    XEvent *evenvPtr));
EXTERN void		TkWmRemoveFromColormapWindows _ANSI_ARGS_((
			    TkWindow *winPtr));
EXTERN void		TkWmRestackToplevel _ANSI_ARGS_((TkWindow *winPtr,
			    int aboveBelow, TkWindow *otherPtr));
EXTERN void		TkWmSetClass _ANSI_ARGS_((TkWindow *winPtr));
EXTERN void		TkWmUnmapWindow _ANSI_ARGS_((TkWindow *winPtr));
EXTERN int		TkXFileProc _ANSI_ARGS_((ClientData clientData,
			    int mask, int flags));

/* 
 * Unsupported commands.
 */
EXTERN int		TkUnsupported1Cmd _ANSI_ARGS_((ClientData clientData,
			    Tcl_Interp *interp, int argc, char **argv));

#undef EXPORT
#define EXPORT DLLIMPORT

#endif  /* _TKINT */