aboutsummaryrefslogtreecommitdiff
path: root/xorg-server/hw/xwin/winmultiwindowwm.c
blob: 773fc9767a3608f14a3de263889b24f9b55effc5 (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
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
/*
 *Copyright (C) 1994-2000 The XFree86 Project, Inc. All Rights Reserved.
 *Copyright (C) Colin Harrison 2005-2009
 *
 *Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 *"Software"), to deal in the Software without restriction, including
 *without limitation the rights to use, copy, modify, merge, publish,
 *distribute, sublicense, and/or sell copies of the Software, and to
 *permit persons to whom the Software is furnished to do so, subject to
 *the following conditions:
 *
 *The above copyright notice and this permission notice shall be
 *included in all copies or substantial portions of the Software.
 *
 *THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 *EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 *MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 *NONINFRINGEMENT. IN NO EVENT SHALL THE XFREE86 PROJECT BE LIABLE FOR
 *ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
 *CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 *WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 *Except as contained in this notice, the name of the XFree86 Project
 *shall not be used in advertising or otherwise to promote the sale, use
 *or other dealings in this Software without prior written authorization
 *from the XFree86 Project.
 *
 * Authors:	Kensuke Matsuzaki
 *              Colin Harrison
 */

/* X headers */
#ifdef HAVE_XWIN_CONFIG_H
#include <xwin-config.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#ifdef __CYGWIN__
#include <sys/select.h>
#endif
#include <fcntl.h>
#include <setjmp.h>
#define HANDLE void *
#include <pthread.h>
#undef HANDLE
#include <X11/X.h>
#include <X11/Xatom.h>
#include <X11/Xlib.h>
#include <X11/Xlocale.h>
#include <X11/Xproto.h>
#include <X11/Xutil.h>
#include <X11/cursorfont.h>
#include <X11/Xwindows.h>

/* Local headers */
#include "winwindow.h"
#include "winprefs.h"
#include "window.h"
#include "pixmapstr.h"
#include "windowstr.h"

#ifdef XWIN_MULTIWINDOWEXTWM
#include <X11/extensions/windowswmstr.h>
#else
/* We need the native HWND atom for intWM, so for consistency use the
   same name as extWM would if we were building with enabled... */
#define WINDOWSWM_NATIVE_HWND "_WINDOWSWM_NATIVE_HWND"
#endif

extern void winDebug(const char *format, ...);
extern void winReshapeMultiWindow(WindowPtr pWin);
extern void winUpdateRgnMultiWindow(WindowPtr pWin);

#ifndef CYGDEBUG
#define CYGDEBUG NO
#endif

/*
 * Constant defines
 */

#define WIN_CONNECT_RETRIES	5
#define WIN_CONNECT_DELAY	5
#ifdef HAS_DEVWINDOWS
#define WIN_MSG_QUEUE_FNAME	"/dev/windows"
#endif
#define WIN_JMP_OKAY		0
#define WIN_JMP_ERROR_IO	2

/*
 * Local structures
 */

typedef struct _WMMsgNodeRec {
    winWMMessageRec msg;
    struct _WMMsgNodeRec *pNext;
} WMMsgNodeRec, *WMMsgNodePtr;

typedef struct _WMMsgQueueRec {
    struct _WMMsgNodeRec *pHead;
    struct _WMMsgNodeRec *pTail;
    pthread_mutex_t pmMutex;
    pthread_cond_t pcNotEmpty;
    int nQueueSize;
} WMMsgQueueRec, *WMMsgQueuePtr;

typedef struct _WMInfo {
    Display *pDisplay;
    WMMsgQueueRec wmMsgQueue;
    Atom atmWmProtos;
    Atom atmWmDelete;
    Atom atmPrivMap;
    Bool fAllowOtherWM;
} WMInfoRec, *WMInfoPtr;

typedef struct _WMProcArgRec {
    DWORD dwScreen;
    WMInfoPtr pWMInfo;
    pthread_mutex_t *ppmServerStarted;
} WMProcArgRec, *WMProcArgPtr;

typedef struct _XMsgProcArgRec {
    Display *pDisplay;
    DWORD dwScreen;
    WMInfoPtr pWMInfo;
    pthread_mutex_t *ppmServerStarted;
    HWND hwndScreen;
} XMsgProcArgRec, *XMsgProcArgPtr;

/*
 * Prototypes for local functions
 */

static void
 PushMessage(WMMsgQueuePtr pQueue, WMMsgNodePtr pNode);

static WMMsgNodePtr PopMessage(WMMsgQueuePtr pQueue, WMInfoPtr pWMInfo);

static Bool
 InitQueue(WMMsgQueuePtr pQueue);

static void
 GetWindowName(Display * pDpy, Window iWin, char **ppWindowName);

static int
 SendXMessage(Display * pDisplay, Window iWin, Atom atmType, long nData);

static void
 UpdateName(WMInfoPtr pWMInfo, Window iWindow);

static void *winMultiWindowWMProc(void *pArg);

static int
 winMultiWindowWMErrorHandler(Display * pDisplay, XErrorEvent * pErr);

static int
 winMultiWindowWMIOErrorHandler(Display * pDisplay);

static void *winMultiWindowXMsgProc(void *pArg);

static int
 winMultiWindowXMsgProcErrorHandler(Display * pDisplay, XErrorEvent * pErr);

static int
 winMultiWindowXMsgProcIOErrorHandler(Display * pDisplay);

static int
 winRedirectErrorHandler(Display * pDisplay, XErrorEvent * pErr);

static void
 winInitMultiWindowWM(WMInfoPtr pWMInfo, WMProcArgPtr pProcArg);

#if 0
static void
 PreserveWin32Stack(WMInfoPtr pWMInfo, Window iWindow, UINT direction);
#endif

static Bool

CheckAnotherWindowManager(Display * pDisplay, DWORD dwScreen,
                          Bool fAllowOtherWM);

static void
 winApplyHints(Display * pDisplay, Window iWindow, HWND hWnd, HWND * zstyle);

void
 winUpdateWindowPosition(HWND hWnd, Bool reshape, HWND * zstyle);

/*
 * Local globals
 */

static jmp_buf g_jmpWMEntry;
static XIOErrorHandler g_winMultiWindowWMOldIOErrorHandler;
static pthread_t g_winMultiWindowWMThread;
static jmp_buf g_jmpXMsgProcEntry;
static XIOErrorHandler g_winMultiWindowXMsgProcOldIOErrorHandler;
static pthread_t g_winMultiWindowXMsgProcThread;
static Bool g_shutdown = FALSE;
static Bool redirectError = FALSE;
static Bool g_fAnotherWMRunning = FALSE;

/*
 * PushMessage - Push a message onto the queue
 */

static void
PushMessage(WMMsgQueuePtr pQueue, WMMsgNodePtr pNode)
{

    /* Lock the queue mutex */
    pthread_mutex_lock(&pQueue->pmMutex);

    pNode->pNext = NULL;

    if (pQueue->pTail != NULL) {
        pQueue->pTail->pNext = pNode;
    }
    pQueue->pTail = pNode;

    if (pQueue->pHead == NULL) {
        pQueue->pHead = pNode;
    }

#if 0
    switch (pNode->msg.msg) {
    case WM_WM_MOVE:
        ErrorF("\tWM_WM_MOVE\n");
        break;
    case WM_WM_SIZE:
        ErrorF("\tWM_WM_SIZE\n");
        break;
    case WM_WM_RAISE:
        ErrorF("\tWM_WM_RAISE\n");
        break;
    case WM_WM_LOWER:
        ErrorF("\tWM_WM_LOWER\n");
        break;
    case WM_WM_MAP:
        ErrorF("\tWM_WM_MAP\n");
        break;
    case WM_WM_MAP2:
        ErrorF("\tWM_WM_MAP2\n");
        break;
    case WM_WM_MAP3:
        ErrorF("\tWM_WM_MAP3\n");
        break;
    case WM_WM_UNMAP:
        ErrorF("\tWM_WM_UNMAP\n");
        break;
    case WM_WM_KILL:
        ErrorF("\tWM_WM_KILL\n");
        break;
    case WM_WM_ACTIVATE:
        ErrorF("\tWM_WM_ACTIVATE\n");
        break;
    default:
        ErrorF("\tUnknown Message.\n");
        break;
    }
#endif

    /* Increase the count of elements in the queue by one */
    ++(pQueue->nQueueSize);

    /* Release the queue mutex */
    pthread_mutex_unlock(&pQueue->pmMutex);

    /* Signal that the queue is not empty */
    pthread_cond_signal(&pQueue->pcNotEmpty);
}

#if CYGMULTIWINDOW_DEBUG
/*
 * QueueSize - Return the size of the queue
 */

static int
QueueSize(WMMsgQueuePtr pQueue)
{
    WMMsgNodePtr pNode;
    int nSize = 0;

    /* Loop through all elements in the queue */
    for (pNode = pQueue->pHead; pNode != NULL; pNode = pNode->pNext)
        ++nSize;

    return nSize;
}
#endif

/*
 * PopMessage - Pop a message from the queue
 */

static WMMsgNodePtr
PopMessage(WMMsgQueuePtr pQueue, WMInfoPtr pWMInfo)
{
    WMMsgNodePtr pNode;

    /* Lock the queue mutex */
    pthread_mutex_lock(&pQueue->pmMutex);

    /* Wait for --- */
    while (pQueue->pHead == NULL) {
        pthread_cond_wait(&pQueue->pcNotEmpty, &pQueue->pmMutex);
    }

    pNode = pQueue->pHead;
    if (pQueue->pHead != NULL) {
        pQueue->pHead = pQueue->pHead->pNext;
    }

    if (pQueue->pTail == pNode) {
        pQueue->pTail = NULL;
    }

    /* Drop the number of elements in the queue by one */
    --(pQueue->nQueueSize);

#if CYGMULTIWINDOW_DEBUG
    ErrorF("Queue Size %d %d\n", pQueue->nQueueSize, QueueSize(pQueue));
#endif

    /* Release the queue mutex */
    pthread_mutex_unlock(&pQueue->pmMutex);

    return pNode;
}

#if 0
/*
 * HaveMessage - 
 */

static Bool
HaveMessage(WMMsgQueuePtr pQueue, UINT msg, Window iWindow)
{
    WMMsgNodePtr pNode;

    for (pNode = pQueue->pHead; pNode != NULL; pNode = pNode->pNext) {
        if (pNode->msg.msg == msg && pNode->msg.iWindow == iWindow)
            return True;
    }

    return False;
}
#endif

/*
 * InitQueue - Initialize the Window Manager message queue
 */

static
    Bool
InitQueue(WMMsgQueuePtr pQueue)
{
    /* Check if the pQueue pointer is NULL */
    if (pQueue == NULL) {
        ErrorF("InitQueue - pQueue is NULL.  Exiting.\n");
        return FALSE;
    }

    /* Set the head and tail to NULL */
    pQueue->pHead = NULL;
    pQueue->pTail = NULL;

    /* There are no elements initially */
    pQueue->nQueueSize = 0;

#if CYGMULTIWINDOW_DEBUG
    winDebug("InitQueue - Queue Size %d %d\n", pQueue->nQueueSize,
             QueueSize(pQueue));
#endif

    winDebug("InitQueue - Calling pthread_mutex_init\n");

    /* Create synchronization objects */
    pthread_mutex_init(&pQueue->pmMutex, NULL);

    winDebug("InitQueue - pthread_mutex_init returned\n");
    winDebug("InitQueue - Calling pthread_cond_init\n");

    pthread_cond_init(&pQueue->pcNotEmpty, NULL);

    winDebug("InitQueue - pthread_cond_init returned\n");

    return TRUE;
}

static
char *
Xutf8TextPropertyToString(Display * pDisplay, XTextProperty * xtp)
{
    int nNum;
    char **ppList;
    char *pszReturnData;

    if (Xutf8TextPropertyToTextList(pDisplay, xtp, &ppList, &nNum) >= Success &&
        nNum > 0 && *ppList) {
        int i;
        int iLen = 0;

        for (i = 0; i < nNum; i++)
            iLen += strlen(ppList[i]);
        pszReturnData = (char *) malloc(iLen + 1);
        pszReturnData[0] = '\0';
        for (i = 0; i < nNum; i++)
            strcat(pszReturnData, ppList[i]);
        if (ppList)
            XFreeStringList(ppList);
    }
    else {
        pszReturnData = (char *) malloc(1);
        pszReturnData[0] = '\0';
    }

    return pszReturnData;
}

/*
 * GetWindowName - Retrieve the title of an X Window
 */

static void
GetWindowName(Display * pDisplay, Window iWin, char **ppWindowName)
{
    int nResult;
    XTextProperty xtpWindowName;
    char *pszWindowName;

#if CYGMULTIWINDOW_DEBUG
    ErrorF("GetWindowName\n");
#endif

    /* Intialize ppWindowName to NULL */
    *ppWindowName = NULL;

    /* Try to get window name */
    nResult = XGetWMName(pDisplay, iWin, &xtpWindowName);
    if (!nResult || !xtpWindowName.value || !xtpWindowName.nitems) {
#if CYGMULTIWINDOW_DEBUG
        ErrorF("GetWindowName - XGetWMName failed.  No name.\n");
#endif
        return;
    }

    pszWindowName = Xutf8TextPropertyToString(pDisplay, &xtpWindowName);
    XFree(xtpWindowName.value);
    *ppWindowName = pszWindowName;
}

/*
 * Send a message to the X server from the WM thread
 */

static int
SendXMessage(Display * pDisplay, Window iWin, Atom atmType, long nData)
{
    XEvent e;

    /* Prepare the X event structure */
    e.type = ClientMessage;
    e.xclient.window = iWin;
    e.xclient.message_type = atmType;
    e.xclient.format = 32;
    e.xclient.data.l[0] = nData;
    e.xclient.data.l[1] = CurrentTime;

    /* Send the event to X */
    return XSendEvent(pDisplay, iWin, False, NoEventMask, &e);
}

/*
 * See if we can get the stored HWND for this window...
 */
static HWND
getHwnd(WMInfoPtr pWMInfo, Window iWindow)
{
    Atom atmType;
    int fmtRet;
    unsigned long items, remain;
    HWND *retHwnd, hWnd = NULL;

    if (XGetWindowProperty(pWMInfo->pDisplay,
                           iWindow,
                           pWMInfo->atmPrivMap,
                           0,
                           1,
                           False,
                           XA_INTEGER,
                           &atmType,
                           &fmtRet,
                           &items,
                           &remain, (unsigned char **) &retHwnd) == Success) {
        if (retHwnd) {
            hWnd = *retHwnd;
            XFree(retHwnd);
        }
    }

    /* Some sanity checks */
    if (!hWnd)
        return NULL;
    if (!IsWindow(hWnd))
        return NULL;

    return hWnd;
}

/*
 * Updates the name of a HWND according to its X WM_NAME property
 */

static void
UpdateName(WMInfoPtr pWMInfo, Window iWindow)
{
    HWND hWnd;
    XWindowAttributes attr;

    hWnd = getHwnd(pWMInfo, iWindow);
    if (!hWnd)
        return;

    /* If window isn't override-redirect */
    XGetWindowAttributes(pWMInfo->pDisplay, iWindow, &attr);
    if (!attr.override_redirect) {
        char *pszWindowName;

        /* Get the X windows window name */
        GetWindowName(pWMInfo->pDisplay, iWindow, &pszWindowName);

        if (pszWindowName) {
            /* Convert from UTF-8 to wide char */
            int iLen =
                MultiByteToWideChar(CP_UTF8, 0, pszWindowName, -1, NULL, 0);
            wchar_t *pwszWideWindowName =
                (wchar_t *) malloc(sizeof(wchar_t) * (iLen + 1));
            MultiByteToWideChar(CP_UTF8, 0, pszWindowName, -1,
                                pwszWideWindowName, iLen);

            /* Set the Windows window name */
            SetWindowTextW(hWnd, pwszWideWindowName);

            free(pwszWideWindowName);
            free(pszWindowName);
        }
    }
}

/*
 * Updates the icon of a HWND according to its X icon properties
 */

static void
UpdateIcon(WMInfoPtr pWMInfo, Window iWindow)
{
    HWND hWnd;
    HICON hIconNew = NULL;
    XWindowAttributes attr;

    hWnd = getHwnd(pWMInfo, iWindow);
    if (!hWnd)
        return;

    /* If window isn't override-redirect */
    XGetWindowAttributes(pWMInfo->pDisplay, iWindow, &attr);
    if (!attr.override_redirect) {
        XClassHint class_hint = { 0, 0 };
        char *window_name = 0;

        if (XGetClassHint(pWMInfo->pDisplay, iWindow, &class_hint)) {
            XFetchName(pWMInfo->pDisplay, iWindow, &window_name);

            hIconNew =
                (HICON) winOverrideIcon(class_hint.res_name,
                                        class_hint.res_class, window_name);

            if (class_hint.res_name)
                XFree(class_hint.res_name);
            if (class_hint.res_class)
                XFree(class_hint.res_class);
            if (window_name)
                XFree(window_name);
        }
    }

    winUpdateIcon(hWnd, pWMInfo->pDisplay, iWindow, hIconNew);
}

#if 0
/*
 * Fix up any differences between the X11 and Win32 window stacks
 * starting at the window passed in
 */
static void
PreserveWin32Stack(WMInfoPtr pWMInfo, Window iWindow, UINT direction)
{
    HWND hWnd;
    DWORD myWinProcID, winProcID;
    Window xWindow;
    WINDOWPLACEMENT wndPlace;

    hWnd = getHwnd(pWMInfo, iWindow);
    if (!hWnd)
        return;

    GetWindowThreadProcessId(hWnd, &myWinProcID);
    hWnd = GetNextWindow(hWnd, direction);

    while (hWnd) {
        GetWindowThreadProcessId(hWnd, &winProcID);
        if (winProcID == myWinProcID) {
            wndPlace.length = sizeof(WINDOWPLACEMENT);
            GetWindowPlacement(hWnd, &wndPlace);
            if (!(wndPlace.showCmd == SW_HIDE ||
                  wndPlace.showCmd == SW_MINIMIZE)) {
                xWindow = (Window) GetProp(hWnd, WIN_WID_PROP);
                if (xWindow) {
                    if (direction == GW_HWNDPREV)
                        XRaiseWindow(pWMInfo->pDisplay, xWindow);
                    else
                        XLowerWindow(pWMInfo->pDisplay, xWindow);
                }
            }
        }
        hWnd = GetNextWindow(hWnd, direction);
    }
}
#endif                          /* PreserveWin32Stack */

/*
 * winMultiWindowWMProc
 */

static void *
winMultiWindowWMProc(void *pArg)
{
    WMProcArgPtr pProcArg = (WMProcArgPtr) pArg;
    WMInfoPtr pWMInfo = pProcArg->pWMInfo;

    /* Initialize the Window Manager */
    winInitMultiWindowWM(pWMInfo, pProcArg);

#if CYGMULTIWINDOW_DEBUG
    ErrorF("winMultiWindowWMProc ()\n");
#endif

    /* Loop until we explicitly break out */
    for (;;) {
        WMMsgNodePtr pNode;

        if (g_fAnotherWMRunning) {      /* Another Window manager exists. */
            Sleep(1000);
            continue;
        }

        /* Pop a message off of our queue */
        pNode = PopMessage(&pWMInfo->wmMsgQueue, pWMInfo);
        if (pNode == NULL) {
            /* Bail if PopMessage returns without a message */
            /* NOTE: Remember that PopMessage is a blocking function. */
            ErrorF("winMultiWindowWMProc - Queue is Empty?  Exiting.\n");
            pthread_exit(NULL);
        }

#if CYGMULTIWINDOW_DEBUG
        ErrorF("winMultiWindowWMProc - %d ms MSG: %d ID: %d\n",
               GetTickCount(), (int) pNode->msg.msg, (int) pNode->msg.dwID);
#endif

        /* Branch on the message type */
        switch (pNode->msg.msg) {
#if 0
        case WM_WM_MOVE:
            ErrorF("\tWM_WM_MOVE\n");
            break;

        case WM_WM_SIZE:
            ErrorF("\tWM_WM_SIZE\n");
            break;
#endif

        case WM_WM_RAISE:
#if CYGMULTIWINDOW_DEBUG
            ErrorF("\tWM_WM_RAISE\n");
#endif
            /* Raise the window */
            XRaiseWindow(pWMInfo->pDisplay, pNode->msg.iWindow);
#if 0
            PreserveWin32Stack(pWMInfo, pNode->msg.iWindow, GW_HWNDPREV);
#endif
            break;

        case WM_WM_LOWER:
#if CYGMULTIWINDOW_DEBUG
            ErrorF("\tWM_WM_LOWER\n");
#endif

            /* Lower the window */
            XLowerWindow(pWMInfo->pDisplay, pNode->msg.iWindow);
            break;

        case WM_WM_MAP:
#if CYGMULTIWINDOW_DEBUG
            ErrorF("\tWM_WM_MAP\n");
#endif
            /* Put a note as to the HWND associated with this Window */
            XChangeProperty(pWMInfo->pDisplay, pNode->msg.iWindow, pWMInfo->atmPrivMap, XA_INTEGER,     //pWMInfo->atmPrivMap,
                            32,
                            PropModeReplace,
                            (unsigned char *) &(pNode->msg.hwndWindow), 1);
            UpdateName(pWMInfo, pNode->msg.iWindow);
            UpdateIcon(pWMInfo, pNode->msg.iWindow);
            break;

        case WM_WM_MAP2:
#if CYGMULTIWINDOW_DEBUG
            ErrorF("\tWM_WM_MAP2\n");
#endif
            XChangeProperty(pWMInfo->pDisplay, pNode->msg.iWindow, pWMInfo->atmPrivMap, XA_INTEGER,     //pWMInfo->atmPrivMap,
                            32,
                            PropModeReplace,
                            (unsigned char *) &(pNode->msg.hwndWindow), 1);
            break;

        case WM_WM_MAP3:
#if CYGMULTIWINDOW_DEBUG
            ErrorF("\tWM_WM_MAP3\n");
#endif
            /* Put a note as to the HWND associated with this Window */
            XChangeProperty(pWMInfo->pDisplay, pNode->msg.iWindow, pWMInfo->atmPrivMap, XA_INTEGER,     //pWMInfo->atmPrivMap,
                            32,
                            PropModeReplace,
                            (unsigned char *) &(pNode->msg.hwndWindow), 1);
            UpdateName(pWMInfo, pNode->msg.iWindow);
            UpdateIcon(pWMInfo, pNode->msg.iWindow);
            {
                HWND zstyle = HWND_NOTOPMOST;

                winApplyHints(pWMInfo->pDisplay, pNode->msg.iWindow,
                              pNode->msg.hwndWindow, &zstyle);
                winUpdateWindowPosition(pNode->msg.hwndWindow, TRUE, &zstyle);
            }
            break;

        case WM_WM_UNMAP:
#if CYGMULTIWINDOW_DEBUG
            ErrorF("\tWM_WM_UNMAP\n");
#endif

            /* Unmap the window */
            XUnmapWindow(pWMInfo->pDisplay, pNode->msg.iWindow);
            break;

        case WM_WM_KILL:
#if CYGMULTIWINDOW_DEBUG
            ErrorF("\tWM_WM_KILL\n");
#endif
            {
                int i, n, found = 0;
                Atom *protocols;

                /* --- */
                if (XGetWMProtocols(pWMInfo->pDisplay,
                                    pNode->msg.iWindow, &protocols, &n)) {
                    for (i = 0; i < n; ++i)
                        if (protocols[i] == pWMInfo->atmWmDelete)
                            ++found;

                    XFree(protocols);
                }

                /* --- */
                if (found)
                    SendXMessage(pWMInfo->pDisplay,
                                 pNode->msg.iWindow,
                                 pWMInfo->atmWmProtos, pWMInfo->atmWmDelete);
                else
                    XKillClient(pWMInfo->pDisplay, pNode->msg.iWindow);
            }
            break;

        case WM_WM_ACTIVATE:
#if CYGMULTIWINDOW_DEBUG
            ErrorF("\tWM_WM_ACTIVATE\n");
#endif

            /* Set the input focus */
            XSetInputFocus(pWMInfo->pDisplay,
                           pNode->msg.iWindow,
                           RevertToPointerRoot, CurrentTime);
            break;

        case WM_WM_NAME_EVENT:
            UpdateName(pWMInfo, pNode->msg.iWindow);
            break;

        case WM_WM_ICON_EVENT:
            UpdateIcon(pWMInfo, pNode->msg.iWindow);
            break;

        case WM_WM_CHANGE_STATE:
            /* Minimize the window in Windows */
            winMinimizeWindow(pNode->msg.iWindow);
            break;

        default:
            ErrorF("winMultiWindowWMProc - Unknown Message.  Exiting.\n");
            pthread_exit(NULL);
            break;
        }

        /* Free the retrieved message */
        free(pNode);

        /* Flush any pending events on our display */
        XFlush(pWMInfo->pDisplay);
    }

    /* Free the condition variable */
    pthread_cond_destroy(&pWMInfo->wmMsgQueue.pcNotEmpty);

    /* Free the mutex variable */
    pthread_mutex_destroy(&pWMInfo->wmMsgQueue.pmMutex);

    /* Free the passed-in argument */
    free(pProcArg);

#if CYGMULTIWINDOW_DEBUG
    ErrorF("-winMultiWindowWMProc ()\n");
#endif
    return NULL;
}

/*
 * X message procedure
 */

static void *
winMultiWindowXMsgProc(void *pArg)
{
    winWMMessageRec msg;
    XMsgProcArgPtr pProcArg = (XMsgProcArgPtr) pArg;
    char pszDisplay[512];
    int iRetries;
    XEvent event;
    Atom atmWmName;
    Atom atmWmHints;
    Atom atmWmChange;
    Atom atmNetWmIcon;
    int iReturn;
    XIconSize *xis;

    winDebug("winMultiWindowXMsgProc - Hello\n");

    /* Check that argument pointer is not invalid */
    if (pProcArg == NULL) {
        ErrorF("winMultiWindowXMsgProc - pProcArg is NULL.  Exiting.\n");
        pthread_exit(NULL);
    }

    ErrorF("winMultiWindowXMsgProc - Calling pthread_mutex_lock ()\n");

    /* Grab the server started mutex - pause until we get it */
    iReturn = pthread_mutex_lock(pProcArg->ppmServerStarted);
    if (iReturn != 0) {
        ErrorF("winMultiWindowXMsgProc - pthread_mutex_lock () failed: %d.  "
               "Exiting.\n", iReturn);
        pthread_exit(NULL);
    }

    ErrorF("winMultiWindowXMsgProc - pthread_mutex_lock () returned.\n");

    /* Allow multiple threads to access Xlib */
    if (XInitThreads() == 0) {
        ErrorF("winMultiWindowXMsgProc - XInitThreads () failed.  Exiting.\n");
        pthread_exit(NULL);
    }

    /* See if X supports the current locale */
    if (XSupportsLocale() == False) {
        ErrorF("winMultiWindowXMsgProc - Warning: locale not supported by X\n");
    }

    /* Release the server started mutex */
    pthread_mutex_unlock(pProcArg->ppmServerStarted);

    ErrorF("winMultiWindowXMsgProc - pthread_mutex_unlock () returned.\n");

    /* Install our error handler */
    XSetErrorHandler(winMultiWindowXMsgProcErrorHandler);
    g_winMultiWindowXMsgProcThread = pthread_self();
    g_winMultiWindowXMsgProcOldIOErrorHandler =
        XSetIOErrorHandler(winMultiWindowXMsgProcIOErrorHandler);

    /* Set jump point for IO Error exits */
    iReturn = setjmp(g_jmpXMsgProcEntry);

    /* Check if we should continue operations */
    if (iReturn != WIN_JMP_ERROR_IO && iReturn != WIN_JMP_OKAY) {
        /* setjmp returned an unknown value, exit */
        ErrorF("winInitMultiWindowXMsgProc - setjmp returned: %d.  Exiting.\n",
               iReturn);
        pthread_exit(NULL);
    }
    else if (iReturn == WIN_JMP_ERROR_IO) {
        ErrorF("winInitMultiWindowXMsgProc - Caught IO Error.  Exiting.\n");
        pthread_exit(NULL);
    }

    /* Setup the display connection string x */
    snprintf(pszDisplay,
             512, "127.0.0.1:%s.%d", display, (int) pProcArg->dwScreen);

    /* Print the display connection string */
    ErrorF("winMultiWindowXMsgProc - DISPLAY=%s\n", pszDisplay);

    /* Use our generated cookie for authentication */
    winSetAuthorization();

    /* Initialize retry count */
    iRetries = 0;

    /* Open the X display */
    do {
        /* Try to open the display */
        pProcArg->pDisplay = XOpenDisplay(pszDisplay);
        if (pProcArg->pDisplay == NULL) {
            ErrorF("winMultiWindowXMsgProc - Could not open display, try: %d, "
                   "sleeping: %d\n", iRetries + 1, WIN_CONNECT_DELAY);
            ++iRetries;
            sleep(WIN_CONNECT_DELAY);
            continue;
        }
        else
            break;
    }
    while (pProcArg->pDisplay == NULL && iRetries < WIN_CONNECT_RETRIES);

    /* Make sure that the display opened */
    if (pProcArg->pDisplay == NULL) {
        ErrorF("winMultiWindowXMsgProc - Failed opening the display.  "
               "Exiting.\n");
        pthread_exit(NULL);
    }

    ErrorF("winMultiWindowXMsgProc - XOpenDisplay () returned and "
           "successfully opened the display.\n");

    /* Check if another window manager is already running */
    g_fAnotherWMRunning =
        CheckAnotherWindowManager(pProcArg->pDisplay, pProcArg->dwScreen,
                                  pProcArg->pWMInfo->fAllowOtherWM);

    if (g_fAnotherWMRunning && !pProcArg->pWMInfo->fAllowOtherWM) {
        ErrorF("winMultiWindowXMsgProc - "
               "another window manager is running.  Exiting.\n");
        pthread_exit(NULL);
    }

    /* Set up the supported icon sizes */
    xis = XAllocIconSize();
    if (xis) {
        xis->min_width = xis->min_height = 16;
        xis->max_width = xis->max_height = 48;
        xis->width_inc = xis->height_inc = 16;
        XSetIconSizes(pProcArg->pDisplay,
                      RootWindow(pProcArg->pDisplay, pProcArg->dwScreen),
                      xis, 1);
        XFree(xis);
    }

    atmWmName = XInternAtom(pProcArg->pDisplay, "WM_NAME", False);
    atmWmHints = XInternAtom(pProcArg->pDisplay, "WM_HINTS", False);
    atmWmChange = XInternAtom(pProcArg->pDisplay, "WM_CHANGE_STATE", False);
    atmNetWmIcon = XInternAtom(pProcArg->pDisplay, "_NET_WM_ICON", False);

    /*
       iiimxcf had a bug until 2009-04-27, assuming that the
       WM_STATE atom exists, causing clients to fail with
       a BadAtom X error if it doesn't.

       Since this is on in the default Solaris 10 install,
       workaround this by making sure it does exist...
     */
    XInternAtom(pProcArg->pDisplay, "WM_STATE", 0);

    /* Loop until we explicitly break out */
    while (1) {
        if (g_shutdown)
            break;

        if (pProcArg->pWMInfo->fAllowOtherWM && !XPending(pProcArg->pDisplay)) {
            if (CheckAnotherWindowManager
                (pProcArg->pDisplay, pProcArg->dwScreen, TRUE)) {
                if (!g_fAnotherWMRunning) {
                    g_fAnotherWMRunning = TRUE;
                    SendMessage(*(HWND *) pProcArg->hwndScreen, WM_UNMANAGE, 0,
                                0);
                }
            }
            else {
                if (g_fAnotherWMRunning) {
                    g_fAnotherWMRunning = FALSE;
                    SendMessage(*(HWND *) pProcArg->hwndScreen, WM_MANAGE, 0,
                                0);
                }
            }
            Sleep(500);
            continue;
        }

        /* Fetch next event */
        XNextEvent(pProcArg->pDisplay, &event);

        /* Branch on event type */
        if (event.type == CreateNotify) {
            XWindowAttributes attr;

            XSelectInput(pProcArg->pDisplay,
                         event.xcreatewindow.window, PropertyChangeMask);

            /* Get the window attributes */
            XGetWindowAttributes(pProcArg->pDisplay,
                                 event.xcreatewindow.window, &attr);

            if (!attr.override_redirect)
                XSetWindowBorderWidth(pProcArg->pDisplay,
                                      event.xcreatewindow.window, 0);
        }
        else if (event.type == MapNotify) {
            /* Fake a reparentNotify event as SWT/Motif expects a
               Window Manager to reparent a top-level window when
               it is mapped and waits until they do.

               We don't actually need to reparent, as the frame is
               a native window, not an X window

               We do this on MapNotify, not MapRequest like a real
               Window Manager would, so we don't have do get involved
               in actually mapping the window via it's (non-existent)
               parent...

               See sourceware bugzilla #9848
             */

            XWindowAttributes attr;
            Window root;
            Window parent;
            Window *children;
            unsigned int nchildren;

            if (XGetWindowAttributes(event.xmap.display,
                                     event.xmap.window,
                                     &attr) &&
                XQueryTree(event.xmap.display,
                           event.xmap.window,
                           &root, &parent, &children, &nchildren)) {
                if (children)
                    XFree(children);

                /*
                   It's a top-level window if the parent window is a root window
                   Only non-override_redirect windows can get reparented
                 */
                if ((attr.root == parent) && !event.xmap.override_redirect) {
                    XEvent event_send;

                    event_send.type = ReparentNotify;
                    event_send.xreparent.event = event.xmap.window;
                    event_send.xreparent.window = event.xmap.window;
                    event_send.xreparent.parent = parent;
                    event_send.xreparent.x = attr.x;
                    event_send.xreparent.y = attr.y;

                    XSendEvent(event.xmap.display,
                               event.xmap.window,
                               True, StructureNotifyMask, &event_send);
                }
            }
        }
        else if (event.type == ConfigureNotify) {
            if (!event.xconfigure.send_event) {
                /*
                   Java applications using AWT on JRE 1.6.0 break with non-reparenting WMs AWT
                   doesn't explicitly know about (See sun bug #6434227)

                   XDecoratedPeer.handleConfigureNotifyEvent() only processes non-synthetic
                   ConfigureNotify events to update window location if it's identified the
                   WM as a non-reparenting WM it knows about (compiz or lookingglass)

                   Rather than tell all sorts of lies to get XWM to recognize us as one of
                   those, simply send a synthetic ConfigureNotify for every non-synthetic one
                 */
                XEvent event_send = event;

                event_send.xconfigure.send_event = TRUE;
                event_send.xconfigure.event = event.xconfigure.window;
                XSendEvent(event.xconfigure.display,
                           event.xconfigure.window,
                           True, StructureNotifyMask, &event_send);
            }
        }
        else if (event.type == PropertyNotify) {
            if (event.xproperty.atom == atmWmName) {
                memset(&msg, 0, sizeof(msg));

                msg.msg = WM_WM_NAME_EVENT;
                msg.iWindow = event.xproperty.window;

                /* Other fields ignored */
                winSendMessageToWM(pProcArg->pWMInfo, &msg);
            }
            else if ((event.xproperty.atom == atmWmHints) ||
                     (event.xproperty.atom == atmNetWmIcon)) {
                memset(&msg, 0, sizeof(msg));
                msg.msg = WM_WM_ICON_EVENT;
                msg.iWindow = event.xproperty.window;

                /* Other fields ignored */
                winSendMessageToWM(pProcArg->pWMInfo, &msg);
            }
        }
        else if (event.type == ClientMessage
                 && event.xclient.message_type == atmWmChange
                 && event.xclient.data.l[0] == IconicState) {
            ErrorF("winMultiWindowXMsgProc - WM_CHANGE_STATE - IconicState\n");

            memset(&msg, 0, sizeof(msg));

            msg.msg = WM_WM_CHANGE_STATE;
            msg.iWindow = event.xclient.window;

            winSendMessageToWM(pProcArg->pWMInfo, &msg);
        }
    }

    XCloseDisplay(pProcArg->pDisplay);
    pthread_exit(NULL);
    return NULL;
}

/*
 * winInitWM - Entry point for the X server to spawn
 * the Window Manager thread.  Called from
 * winscrinit.c/winFinishScreenInitFB ().
 */

Bool
winInitWM(void **ppWMInfo,
          pthread_t * ptWMProc,
          pthread_t * ptXMsgProc,
          pthread_mutex_t * ppmServerStarted,
          int dwScreen, HWND hwndScreen, BOOL allowOtherWM)
{
    WMProcArgPtr pArg = (WMProcArgPtr) malloc(sizeof(WMProcArgRec));
    WMInfoPtr pWMInfo = (WMInfoPtr) malloc(sizeof(WMInfoRec));
    XMsgProcArgPtr pXMsgArg = (XMsgProcArgPtr) malloc(sizeof(XMsgProcArgRec));

    /* Bail if the input parameters are bad */
    if (pArg == NULL || pWMInfo == NULL || pXMsgArg == NULL) {
        ErrorF("winInitWM - malloc failed.\n");
        free(pArg);
        free(pWMInfo);
        free(pXMsgArg);
        return FALSE;
    }

    /* Zero the allocated memory */
    ZeroMemory(pArg, sizeof(WMProcArgRec));
    ZeroMemory(pWMInfo, sizeof(WMInfoRec));
    ZeroMemory(pXMsgArg, sizeof(XMsgProcArgRec));

    /* Set a return pointer to the Window Manager info structure */
    *ppWMInfo = pWMInfo;
    pWMInfo->fAllowOtherWM = allowOtherWM;

    /* Setup the argument structure for the thread function */
    pArg->dwScreen = dwScreen;
    pArg->pWMInfo = pWMInfo;
    pArg->ppmServerStarted = ppmServerStarted;

    /* Intialize the message queue */
    if (!InitQueue(&pWMInfo->wmMsgQueue)) {
        ErrorF("winInitWM - InitQueue () failed.\n");
        return FALSE;
    }

    /* Spawn a thread for the Window Manager */
    if (pthread_create(ptWMProc, NULL, winMultiWindowWMProc, pArg)) {
        /* Bail if thread creation failed */
        ErrorF("winInitWM - pthread_create failed for Window Manager.\n");
        return FALSE;
    }

    /* Spawn the XNextEvent thread, will send messages to WM */
    pXMsgArg->dwScreen = dwScreen;
    pXMsgArg->pWMInfo = pWMInfo;
    pXMsgArg->ppmServerStarted = ppmServerStarted;
    pXMsgArg->hwndScreen = hwndScreen;
    if (pthread_create(ptXMsgProc, NULL, winMultiWindowXMsgProc, pXMsgArg)) {
        /* Bail if thread creation failed */
        ErrorF("winInitWM - pthread_create failed on XMSG.\n");
        return FALSE;
    }

#if CYGDEBUG || YES
    winDebug("winInitWM - Returning.\n");
#endif

    return TRUE;
}

/*
 * Window manager thread - setup
 */

static void
winInitMultiWindowWM(WMInfoPtr pWMInfo, WMProcArgPtr pProcArg)
{
    int iRetries = 0;
    char pszDisplay[512];
    int iReturn;

    winDebug("winInitMultiWindowWM - Hello\n");

    /* Check that argument pointer is not invalid */
    if (pProcArg == NULL) {
        ErrorF("winInitMultiWindowWM - pProcArg is NULL.  Exiting.\n");
        pthread_exit(NULL);
    }

    ErrorF("winInitMultiWindowWM - Calling pthread_mutex_lock ()\n");

    /* Grab our garbage mutex to satisfy pthread_cond_wait */
    iReturn = pthread_mutex_lock(pProcArg->ppmServerStarted);
    if (iReturn != 0) {
        ErrorF("winInitMultiWindowWM - pthread_mutex_lock () failed: %d.  "
               "Exiting.\n", iReturn);
        pthread_exit(NULL);
    }

    ErrorF("winInitMultiWindowWM - pthread_mutex_lock () returned.\n");

    /* Allow multiple threads to access Xlib */
    if (XInitThreads() == 0) {
        ErrorF("winInitMultiWindowWM - XInitThreads () failed.  Exiting.\n");
        pthread_exit(NULL);
    }

    /* See if X supports the current locale */
    if (XSupportsLocale() == False) {
        ErrorF("winInitMultiWindowWM - Warning: Locale not supported by X.\n");
    }

    /* Release the server started mutex */
    pthread_mutex_unlock(pProcArg->ppmServerStarted);

    ErrorF("winInitMultiWindowWM - pthread_mutex_unlock () returned.\n");

    /* Install our error handler */
    XSetErrorHandler(winMultiWindowWMErrorHandler);
    g_winMultiWindowWMThread = pthread_self();
    g_winMultiWindowWMOldIOErrorHandler =
        XSetIOErrorHandler(winMultiWindowWMIOErrorHandler);

    /* Set jump point for IO Error exits */
    iReturn = setjmp(g_jmpWMEntry);

    /* Check if we should continue operations */
    if (iReturn != WIN_JMP_ERROR_IO && iReturn != WIN_JMP_OKAY) {
        /* setjmp returned an unknown value, exit */
        ErrorF("winInitMultiWindowWM - setjmp returned: %d.  Exiting.\n",
               iReturn);
        pthread_exit(NULL);
    }
    else if (iReturn == WIN_JMP_ERROR_IO) {
        ErrorF("winInitMultiWindowWM - Caught IO Error.  Exiting.\n");
        pthread_exit(NULL);
    }

    /* Setup the display connection string x */
    snprintf(pszDisplay,
             512, "127.0.0.1:%s.%d", display, (int) pProcArg->dwScreen);

    /* Print the display connection string */
    ErrorF("winInitMultiWindowWM - DISPLAY=%s\n", pszDisplay);

    /* Use our generated cookie for authentication */
    winSetAuthorization();

    /* Open the X display */
    do {
        /* Try to open the display */
        pWMInfo->pDisplay = XOpenDisplay(pszDisplay);
        if (pWMInfo->pDisplay == NULL) {
            ErrorF("winInitMultiWindowWM - Could not open display, try: %d, "
                   "sleeping: %d\n", iRetries + 1, WIN_CONNECT_DELAY);
            ++iRetries;
            sleep(WIN_CONNECT_DELAY);
            continue;
        }
        else
            break;
    }
    while (pWMInfo->pDisplay == NULL && iRetries < WIN_CONNECT_RETRIES);

    /* Make sure that the display opened */
    if (pWMInfo->pDisplay == NULL) {
        ErrorF("winInitMultiWindowWM - Failed opening the display.  "
               "Exiting.\n");
        pthread_exit(NULL);
    }

    ErrorF("winInitMultiWindowWM - XOpenDisplay () returned and "
           "successfully opened the display.\n");

    /* Create some atoms */
    pWMInfo->atmWmProtos = XInternAtom(pWMInfo->pDisplay,
                                       "WM_PROTOCOLS", False);
    pWMInfo->atmWmDelete = XInternAtom(pWMInfo->pDisplay,
                                       "WM_DELETE_WINDOW", False);

    pWMInfo->atmPrivMap = XInternAtom(pWMInfo->pDisplay,
                                      WINDOWSWM_NATIVE_HWND, False);

    if (1) {
        Cursor cursor = XCreateFontCursor(pWMInfo->pDisplay, XC_left_ptr);

        if (cursor) {
            XDefineCursor(pWMInfo->pDisplay,
                          DefaultRootWindow(pWMInfo->pDisplay), cursor);
            XFreeCursor(pWMInfo->pDisplay, cursor);
        }
    }
}

/*
 * winSendMessageToWM - Send a message from the X thread to the WM thread
 */

void
winSendMessageToWM(void *pWMInfo, winWMMessagePtr pMsg)
{
    WMMsgNodePtr pNode;

#if CYGMULTIWINDOW_DEBUG
    ErrorF("winSendMessageToWM ()\n");
#endif

    pNode = (WMMsgNodePtr) malloc(sizeof(WMMsgNodeRec));
    if (pNode != NULL) {
        memcpy(&pNode->msg, pMsg, sizeof(winWMMessageRec));
        PushMessage(&((WMInfoPtr) pWMInfo)->wmMsgQueue, pNode);
    }
}

/*
 * Window manager error handler
 */

static int
winMultiWindowWMErrorHandler(Display * pDisplay, XErrorEvent * pErr)
{
    char pszErrorMsg[100];

    if (pErr->request_code == X_ChangeWindowAttributes
        && pErr->error_code == BadAccess) {
        ErrorF("winMultiWindowWMErrorHandler - ChangeWindowAttributes "
               "BadAccess.\n");
        return 0;
    }

    XGetErrorText(pDisplay, pErr->error_code, pszErrorMsg, sizeof(pszErrorMsg));
    ErrorF("winMultiWindowWMErrorHandler - ERROR: %s\n", pszErrorMsg);

    return 0;
}

/*
 * Window manager IO error handler
 */

static int
winMultiWindowWMIOErrorHandler(Display * pDisplay)
{
    ErrorF("winMultiWindowWMIOErrorHandler!\n\n");

    if (pthread_equal(pthread_self(), g_winMultiWindowWMThread)) {
        if (g_shutdown)
            pthread_exit(NULL);

        /* Restart at the main entry point */
        longjmp(g_jmpWMEntry, WIN_JMP_ERROR_IO);
    }

    if (g_winMultiWindowWMOldIOErrorHandler)
        g_winMultiWindowWMOldIOErrorHandler(pDisplay);

    return 0;
}

/*
 * X message procedure error handler
 */

static int
winMultiWindowXMsgProcErrorHandler(Display * pDisplay, XErrorEvent * pErr)
{
    char pszErrorMsg[100];

    XGetErrorText(pDisplay, pErr->error_code, pszErrorMsg, sizeof(pszErrorMsg));
#if CYGMULTIWINDOW_DEBUG
    ErrorF("winMultiWindowXMsgProcErrorHandler - ERROR: %s\n", pszErrorMsg);
#endif

    return 0;
}

/*
 * X message procedure IO error handler
 */

static int
winMultiWindowXMsgProcIOErrorHandler(Display * pDisplay)
{
    ErrorF("winMultiWindowXMsgProcIOErrorHandler!\n\n");

    if (pthread_equal(pthread_self(), g_winMultiWindowXMsgProcThread)) {
        /* Restart at the main entry point */
        longjmp(g_jmpXMsgProcEntry, WIN_JMP_ERROR_IO);
    }

    if (g_winMultiWindowXMsgProcOldIOErrorHandler)
        g_winMultiWindowXMsgProcOldIOErrorHandler(pDisplay);

    return 0;
}

/*
 * Catch RedirectError to detect other window manager running
 */

static int
winRedirectErrorHandler(Display * pDisplay, XErrorEvent * pErr)
{
    redirectError = TRUE;
    return 0;
}

/*
 * Check if another window manager is running
 */

static Bool
CheckAnotherWindowManager(Display * pDisplay, DWORD dwScreen,
                          Bool fAllowOtherWM)
{
    /*
       Try to select the events which only one client at a time is allowed to select.
       If this causes an error, another window manager is already running...
     */
    redirectError = FALSE;
    XSetErrorHandler(winRedirectErrorHandler);
    XSelectInput(pDisplay, RootWindow(pDisplay, dwScreen),
                 ResizeRedirectMask | SubstructureRedirectMask |
                 ButtonPressMask);
    XSync(pDisplay, 0);
    XSetErrorHandler(winMultiWindowXMsgProcErrorHandler);

    /*
       Side effect: select the events we are actually interested in...

       If other WMs are not allowed, also select one of the events which only one client
       at a time is allowed to select, so other window managers won't start...
     */
    XSelectInput(pDisplay, RootWindow(pDisplay, dwScreen),
                 SubstructureNotifyMask | (!fAllowOtherWM ? ButtonPressMask :
                                           0));
    XSync(pDisplay, 0);
    return redirectError;
}

/*
 * Notify the MWM thread we're exiting and not to reconnect
 */

void
winDeinitMultiWindowWM(void)
{
    ErrorF("winDeinitMultiWindowWM - Noting shutdown in progress\n");
    g_shutdown = TRUE;
}

/* Windows window styles */
#define HINT_NOFRAME	(1l<<0)
#define HINT_BORDER	(1L<<1)
#define HINT_SIZEBOX	(1l<<2)
#define HINT_CAPTION	(1l<<3)
#define HINT_NOMAXIMIZE (1L<<4)
#define HINT_NOMINIMIZE (1L<<5)
#define HINT_NOSYSMENU  (1L<<6)
#define HINT_SKIPTASKBAR (1L<<7)
/* These two are used on their own */
#define HINT_MAX	(1L<<0)
#define HINT_MIN	(1L<<1)

static void
winApplyHints(Display * pDisplay, Window iWindow, HWND hWnd, HWND * zstyle)
{
    static Atom windowState, motif_wm_hints, windowType;
    static Atom hiddenState, fullscreenState, belowState, aboveState,
        skiptaskbarState;
    static Atom dockWindow;
    static int generation;
    Atom type, *pAtom = NULL;
    int format;
    unsigned long hint = 0, maxmin = 0, nitems = 0, left = 0;
    unsigned long style, exStyle;
    MwmHints *mwm_hint = NULL;

    if (!hWnd)
        return;
    if (!IsWindow(hWnd))
        return;

    if (generation != serverGeneration) {
        generation = serverGeneration;
        windowState = XInternAtom(pDisplay, "_NET_WM_STATE", False);
        motif_wm_hints = XInternAtom(pDisplay, "_MOTIF_WM_HINTS", False);
        windowType = XInternAtom(pDisplay, "_NET_WM_WINDOW_TYPE", False);
        hiddenState = XInternAtom(pDisplay, "_NET_WM_STATE_HIDDEN", False);
        fullscreenState =
            XInternAtom(pDisplay, "_NET_WM_STATE_FULLSCREEN", False);
        belowState = XInternAtom(pDisplay, "_NET_WM_STATE_BELOW", False);
        aboveState = XInternAtom(pDisplay, "_NET_WM_STATE_ABOVE", False);
        dockWindow = XInternAtom(pDisplay, "_NET_WM_WINDOW_TYPE_DOCK", False);
        skiptaskbarState =
            XInternAtom(pDisplay, "_NET_WM_STATE_SKIP_TASKBAR", False);
    }

    if (XGetWindowProperty(pDisplay, iWindow, windowState, 0L,
                           1L, False, XA_ATOM, &type, &format,
                           &nitems, &left,
                           (unsigned char **) &pAtom) == Success) {
        if (pAtom && nitems == 1) {
            if (*pAtom == skiptaskbarState)
                hint |= HINT_SKIPTASKBAR;
            if (*pAtom == hiddenState)
                maxmin |= HINT_MIN;
            else if (*pAtom == fullscreenState)
                maxmin |= HINT_MAX;
            if (*pAtom == belowState)
                *zstyle = HWND_BOTTOM;
            else if (*pAtom == aboveState)
                *zstyle = HWND_TOPMOST;
        }
        if (pAtom)
            XFree(pAtom);
    }

    nitems = left = 0;
    if (XGetWindowProperty(pDisplay, iWindow, motif_wm_hints, 0L,
                           PropMwmHintsElements, False, motif_wm_hints, &type,
                           &format, &nitems, &left,
                           (unsigned char **) &mwm_hint) == Success) {
        if (mwm_hint && nitems == PropMwmHintsElements &&
            (mwm_hint->flags & MwmHintsDecorations)) {
            if (!mwm_hint->decorations)
                hint |= HINT_NOFRAME;
            else if (!(mwm_hint->decorations & MwmDecorAll)) {
                if (mwm_hint->decorations & MwmDecorBorder)
                    hint |= HINT_BORDER;
                if (mwm_hint->decorations & MwmDecorHandle)
                    hint |= HINT_SIZEBOX;
                if (mwm_hint->decorations & MwmDecorTitle)
                    hint |= HINT_CAPTION;
                if (!(mwm_hint->decorations & MwmDecorMenu))
                    hint |= HINT_NOSYSMENU;
                if (!(mwm_hint->decorations & MwmDecorMinimize))
                    hint |= HINT_NOMINIMIZE;
                if (!(mwm_hint->decorations & MwmDecorMaximize))
                    hint |= HINT_NOMAXIMIZE;
            }
            else {
                /*
                   MwmDecorAll means all decorations *except* those specified by other flag
                   bits that are set.  Not yet implemented.
                 */
            }
        }
        if (mwm_hint)
            XFree(mwm_hint);
    }

    nitems = left = 0;
    pAtom = NULL;
    if (XGetWindowProperty(pDisplay, iWindow, windowType, 0L,
                           1L, False, XA_ATOM, &type, &format,
                           &nitems, &left,
                           (unsigned char **) &pAtom) == Success) {
        if (pAtom && nitems == 1) {
            if (*pAtom == dockWindow) {
                hint = (hint & ~HINT_NOFRAME) | HINT_SIZEBOX;   /* Xming puts a sizebox on dock windows */
                *zstyle = HWND_TOPMOST;
            }
        }
        if (pAtom)
            XFree(pAtom);
    }

    {
        XSizeHints *normal_hint = XAllocSizeHints();
        long supplied;

        if (normal_hint &&
            (XGetWMNormalHints(pDisplay, iWindow, normal_hint, &supplied) ==
             Success)) {
            if (normal_hint->flags & PMaxSize) {
                /* Not maximizable if a maximum size is specified */
                hint |= HINT_NOMAXIMIZE;

                if (normal_hint->flags & PMinSize) {
                    /*
                       If both minimum size and maximum size are specified and are the same,
                       don't bother with a resizing frame
                     */
                    if ((normal_hint->min_width == normal_hint->max_width)
                        && (normal_hint->min_height == normal_hint->max_height))
                        hint = (hint & ~HINT_SIZEBOX);
                }
            }
        }
        XFree(normal_hint);
    }

    /*
       Override hint settings from above with settings from config file and set
       application id for grouping.
     */
    {
        XClassHint class_hint = { 0, 0 };
        char *window_name = 0;
        char *application_id = 0;

        if (XGetClassHint(pDisplay, iWindow, &class_hint)) {
            XFetchName(pDisplay, iWindow, &window_name);

            style =
                winOverrideStyle(class_hint.res_name, class_hint.res_class,
                                 window_name);

#define APPLICATION_ID_FORMAT	"%s.xwin.%s"
#define APPLICATION_ID_UNKNOWN "unknown"
            if (class_hint.res_class) {
                asprintf(&application_id, APPLICATION_ID_FORMAT, XVENDORNAME,
                         class_hint.res_class);
            }
            else {
                asprintf(&application_id, APPLICATION_ID_FORMAT, XVENDORNAME,
                         APPLICATION_ID_UNKNOWN);
            }
            winSetAppUserModelID(hWnd, application_id);

            if (class_hint.res_name)
                XFree(class_hint.res_name);
            if (class_hint.res_class)
                XFree(class_hint.res_class);
            if (application_id)
                free(application_id);
            if (window_name)
                XFree(window_name);
        }
        else {
            style = STYLE_NONE;
        }
    }

    if (style & STYLE_TOPMOST)
        *zstyle = HWND_TOPMOST;
    else if (style & STYLE_MAXIMIZE)
        maxmin = (hint & ~HINT_MIN) | HINT_MAX;
    else if (style & STYLE_MINIMIZE)
        maxmin = (hint & ~HINT_MAX) | HINT_MIN;
    else if (style & STYLE_BOTTOM)
        *zstyle = HWND_BOTTOM;

    if (maxmin & HINT_MAX)
        SendMessage(hWnd, WM_SYSCOMMAND, SC_MAXIMIZE, 0);
    else if (maxmin & HINT_MIN)
        SendMessage(hWnd, WM_SYSCOMMAND, SC_MINIMIZE, 0);

    if (style & STYLE_NOTITLE)
        hint =
            (hint & ~HINT_NOFRAME & ~HINT_BORDER & ~HINT_CAPTION) |
            HINT_SIZEBOX;
    else if (style & STYLE_OUTLINE)
        hint =
            (hint & ~HINT_NOFRAME & ~HINT_SIZEBOX & ~HINT_CAPTION) |
            HINT_BORDER;
    else if (style & STYLE_NOFRAME)
        hint =
            (hint & ~HINT_BORDER & ~HINT_CAPTION & ~HINT_SIZEBOX) |
            HINT_NOFRAME;

    /* Now apply styles to window */
    style = GetWindowLongPtr(hWnd, GWL_STYLE);
    if (!style)
        return;                 /* GetWindowLongPointer returns 0 on failure, we hope this isn't a valid style */

    style &= ~WS_CAPTION & ~WS_SIZEBOX; /* Just in case */

    if (!(hint & ~HINT_SKIPTASKBAR))    /* No hints, default */
        style = style | WS_CAPTION | WS_SIZEBOX;
    else if (hint & HINT_NOFRAME)       /* No frame, no decorations */
        style = style & ~WS_CAPTION & ~WS_SIZEBOX;
    else
        style = style | ((hint & HINT_BORDER) ? WS_BORDER : 0) |
            ((hint & HINT_SIZEBOX) ? WS_SIZEBOX : 0) |
            ((hint & HINT_CAPTION) ? WS_CAPTION : 0);

    if (hint & HINT_NOMAXIMIZE)
        style = style & ~WS_MAXIMIZEBOX;

    if (hint & HINT_NOMINIMIZE)
        style = style & ~WS_MINIMIZEBOX;

    if (hint & HINT_NOSYSMENU)
        style = style & ~WS_SYSMENU;

    if (hint & HINT_SKIPTASKBAR)
        style = style & ~WS_MINIMIZEBOX;        /* window will become lost if minimized */

    SetWindowLongPtr(hWnd, GWL_STYLE, style);

    exStyle = GetWindowLongPtr(hWnd, GWL_EXSTYLE);
    if (hint & HINT_SKIPTASKBAR)
        exStyle = (exStyle & ~WS_EX_APPWINDOW) | WS_EX_TOOLWINDOW;
    else
        exStyle = (exStyle & ~WS_EX_TOOLWINDOW) | WS_EX_APPWINDOW;
    SetWindowLongPtr(hWnd, GWL_EXSTYLE, exStyle);

    winDebug
        ("winApplyHints: iWindow 0x%08x hints 0x%08x style 0x%08x exstyle 0x%08x\n",
         iWindow, hint, style, exStyle);
}

void
winUpdateWindowPosition(HWND hWnd, Bool reshape, HWND * zstyle)
{
    int iX, iY, iWidth, iHeight;
    int iDx, iDy;
    RECT rcNew;
    WindowPtr pWin = GetProp(hWnd, WIN_WINDOW_PROP);
    DrawablePtr pDraw = NULL;

    if (!pWin)
        return;
    pDraw = &pWin->drawable;
    if (!pDraw)
        return;

    /* Get the X and Y location of the X window */
    iX = pWin->drawable.x + GetSystemMetrics(SM_XVIRTUALSCREEN);
    iY = pWin->drawable.y + GetSystemMetrics(SM_YVIRTUALSCREEN);

    /* Get the height and width of the X window */
    iWidth = pWin->drawable.width;
    iHeight = pWin->drawable.height;

    /* Setup a rectangle with the X window position and size */
    SetRect(&rcNew, iX, iY, iX + iWidth, iY + iHeight);

    winDebug("winUpdateWindowPosition - drawable extent (%d, %d)-(%d, %d)\n",
             rcNew.left, rcNew.top, rcNew.right, rcNew.bottom);

    AdjustWindowRectEx(&rcNew, GetWindowLongPtr(hWnd, GWL_STYLE), FALSE,
                       GetWindowLongPtr(hWnd, GWL_EXSTYLE));

    /* Don't allow window decoration to disappear off to top-left as a result of this adjustment */
    if (rcNew.left < GetSystemMetrics(SM_XVIRTUALSCREEN)) {
        iDx = GetSystemMetrics(SM_XVIRTUALSCREEN) - rcNew.left;
        rcNew.left += iDx;
        rcNew.right += iDx;
    }

    if (rcNew.top < GetSystemMetrics(SM_YVIRTUALSCREEN)) {
        iDy = GetSystemMetrics(SM_YVIRTUALSCREEN) - rcNew.top;
        rcNew.top += iDy;
        rcNew.bottom += iDy;
    }

    winDebug("winUpdateWindowPosition - Window extent (%d, %d)-(%d, %d)\n",
             rcNew.left, rcNew.top, rcNew.right, rcNew.bottom);

    /* Position the Windows window */
    SetWindowPos(hWnd, *zstyle, rcNew.left, rcNew.top,
                 rcNew.right - rcNew.left, rcNew.bottom - rcNew.top, 0);

    if (reshape) {
        winReshapeMultiWindow(pWin);
        winUpdateRgnMultiWindow(pWin);
    }
}