emacs / src / w32menu.c

   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
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
/* X Communication module for terminals which understand the X protocol.
   Copyright (C) 1986, 1988, 1993, 1994 Free Software Foundation, Inc.

This file is part of GNU Emacs.

GNU Emacs is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.

GNU Emacs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with GNU Emacs; see the file COPYING.  If not, write to
the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.  */

/* Written by Kevin Gallo.  */

#include <signal.h>
#include <config.h>

#include <stdio.h>
#include "lisp.h"
#include "termhooks.h"
#include "frame.h"
#include "window.h"
#include "keyboard.h"
#include "blockinput.h"
#include "buffer.h"

/* This may include sys/types.h, and that somehow loses
   if this is not done before the other system files.  */
#include "w32term.h"

/* Load sys/types.h if not already loaded.
   In some systems loading it twice is suicidal.  */
#ifndef makedev
#include <sys/types.h>
#endif

#include "dispextern.h"

#define min(x, y) (((x) < (y)) ? (x) : (y))
#define max(x, y) (((x) > (y)) ? (x) : (y))

typedef struct menu_map 
{
  Lisp_Object menu_items;
  int menu_items_allocated;
  int menu_items_used;
} menu_map;

Lisp_Object Qdebug_on_next_call;

extern Lisp_Object Qmenu_enable;
extern Lisp_Object Qmenu_bar;

extern Lisp_Object Voverriding_local_map;
extern Lisp_Object Voverriding_local_map_menu_flag;

extern Lisp_Object Qoverriding_local_map, Qoverriding_terminal_local_map;

extern Lisp_Object Qmenu_bar_update_hook;

static Lisp_Object win32_dialog_show ();
static Lisp_Object win32menu_show ();

static HMENU keymap_panes ();
static HMENU single_keymap_panes ();
static HMENU list_of_panes ();
static HMENU list_of_items ();

static HMENU create_menu_items ();

/* Initialize the menu_items structure if we haven't already done so.
   Also mark it as currently empty.  */

static void 
init_menu_items (lpmm)
     menu_map * lpmm;
{
  if (NILP (lpmm->menu_items))
    {
      lpmm->menu_items_allocated = 60;
      lpmm->menu_items = Fmake_vector (make_number (lpmm->menu_items_allocated),
				       Qnil);
    }
  
  lpmm->menu_items_used = 0;
}

/* Call when finished using the data for the current menu
   in menu_items.  */

static void 
discard_menu_items (lpmm)
     menu_map * lpmm;
{
  lpmm->menu_items = Qnil;
  lpmm->menu_items_allocated = lpmm->menu_items_used = 0;
}

/* Make the menu_items vector twice as large.  */

static void 
grow_menu_items (lpmm)
     menu_map * lpmm;
{
  Lisp_Object new;
  int old_size = lpmm->menu_items_allocated;
  
  lpmm->menu_items_allocated *= 2;
  new = Fmake_vector (make_number (lpmm->menu_items_allocated), Qnil);
  bcopy (XVECTOR (lpmm->menu_items)->contents, XVECTOR (new)->contents,
	 old_size * sizeof (Lisp_Object));
  
  lpmm->menu_items = new;
}

/* Indicate boundary between left and right.  */

static void 
add_left_right_boundary (hmenu)
     HMENU hmenu;
{
  AppendMenu (hmenu, MF_MENUBARBREAK, 0, NULL);
}

/* Push one menu item into the current pane.
   NAME is the string to display.  ENABLE if non-nil means
   this item can be selected.  KEY is the key generated by
   choosing this item.  EQUIV is the textual description
   of the keyboard equivalent for this item (or nil if none).  */

static void 
add_menu_item (lpmm, hmenu, name, enable, key)
     menu_map * lpmm;
     HMENU hmenu;
     Lisp_Object name;
     UINT enable;
     Lisp_Object key;
{
  UINT fuFlags;
  
  if (NILP (name) 
      || ((char *) XSTRING (name)->data)[0] == 0
      || strcmp ((char *) XSTRING (name)->data, "--") == 0)
    fuFlags = MF_SEPARATOR;
  else if (enable)
    fuFlags = MF_STRING;
  else
    fuFlags = MF_STRING | MF_GRAYED;
  
  AppendMenu (hmenu,
	      fuFlags,
	      lpmm->menu_items_used + 1,
	      (fuFlags == MF_SEPARATOR)?NULL: (char *) XSTRING (name)->data);
  
  lpmm->menu_items_used++;
#if 0
  if (lpmm->menu_items_used >= lpmm->menu_items_allocated)
    grow_menu_items (lpmm);
  
  XSET (XVECTOR (lpmm->menu_items)->contents[lpmm->menu_items_used++],
	Lisp_Cons,
	key);
#endif
}

/* Figure out the current keyboard equivalent of a menu item ITEM1.
   The item string for menu display should be ITEM_STRING.
   Store the equivalent keyboard key sequence's
   textual description into *DESCRIP_PTR.
   Also cache them in the item itself.
   Return the real definition to execute.  */

static Lisp_Object 
menu_item_equiv_key (item_string, item1, descrip_ptr)
     Lisp_Object item_string;
     Lisp_Object item1;
     Lisp_Object *descrip_ptr;
{
  /* This is the real definition--the function to run.  */
  Lisp_Object def;
  /* This is the sublist that records cached equiv key data
     so we can save time.  */
  Lisp_Object cachelist;
  /* These are the saved equivalent keyboard key sequence
     and its key-description.  */
  Lisp_Object savedkey, descrip;
  Lisp_Object def1;
  int changed = 0;
  struct gcpro gcpro1, gcpro2, gcpro3, gcpro4;
  
  /* If a help string follows the item string, skip it.  */
  if (CONSP (XCONS (item1)->cdr)
      && STRINGP (XCONS (XCONS (item1)->cdr)->car))
    item1 = XCONS (item1)->cdr;
  
  def = Fcdr (item1);
  
  /* Get out the saved equivalent-keyboard-key info.  */
  cachelist = savedkey = descrip = Qnil;
  if (CONSP (def) && CONSP (XCONS (def)->car)
      && (NILP (XCONS (XCONS (def)->car)->car)
	  || VECTORP (XCONS (XCONS (def)->car)->car)))
    {
      cachelist = XCONS (def)->car;
      def = XCONS (def)->cdr;
      savedkey = XCONS (cachelist)->car;
      descrip = XCONS (cachelist)->cdr;
    }
  
  GCPRO4 (def, def1, savedkey, descrip);
  
  /* Is it still valid?  */
  def1 = Qnil;
  if (!NILP (savedkey))
    def1 = Fkey_binding (savedkey, Qnil);
  /* If not, update it.  */
  if (! EQ (def1, def)
      /* If the command is an alias for another
	 (such as easymenu.el and lmenu.el set it up),
	 check if the original command matches the cached command. */
      && !(SYMBOLP (def) && SYMBOLP (XSYMBOL (def)->function)
	   && EQ (def1, XSYMBOL (def)->function))
      /* If something had no key binding before, don't recheck it--
	 doing that takes too much time and makes menus too slow.  */
      && !(!NILP (cachelist) && NILP (savedkey)))
    {
      changed = 1;
      descrip = Qnil;
      savedkey = Fwhere_is_internal (def, Qnil, Qt, Qnil);
      /* If the command is an alias for another
	 (such as easymenu.el and lmenu.el set it up),
	 see if the original command name has equivalent keys.  */
      if (SYMBOLP (def) && SYMBOLP (XSYMBOL (def)->function))
	savedkey = Fwhere_is_internal (XSYMBOL (def)->function,
				       Qnil, Qt, Qnil);
      
      if (VECTORP (savedkey)
	  && EQ (XVECTOR (savedkey)->contents[0], Qmenu_bar))
	savedkey = Qnil;
      if (!NILP (savedkey))
	{
	  descrip = Fkey_description (savedkey);
	  descrip = concat2 (make_string ("  (", 3), descrip);
	  descrip = concat2 (descrip, make_string (")", 1));
	}
    }
  
  /* Cache the data we just got in a sublist of the menu binding.  */
  if (NILP (cachelist))
    XCONS (item1)->cdr = Fcons (Fcons (savedkey, descrip), def);
  else if (changed)
    {
      XCONS (cachelist)->car = savedkey;
      XCONS (cachelist)->cdr = descrip;
    }

  UNGCPRO;
  *descrip_ptr = descrip;
  return def;
}

/* This is used as the handler when calling internal_condition_case_1.  */

static Lisp_Object 
menu_item_enabled_p_1 (arg)
     Lisp_Object arg;
{
  return Qnil;
}

/* Return non-nil if the command DEF is enabled when used as a menu item.
   This is based on looking for a menu-enable property.
   If NOTREAL is set, don't bother really computing this.  */

static Lisp_Object 
menu_item_enabled_p (def, notreal)
     Lisp_Object def;
{
  Lisp_Object enabled, tem;

  enabled = Qt;
  if (notreal)
    return enabled;
  if (XTYPE (def) == Lisp_Symbol)
    {
      /* No property, or nil, means enable.
	 Otherwise, enable if value is not nil.  */
      tem = Fget (def, Qmenu_enable);
      if (!NILP (tem))
	/* (condition-case nil (eval tem)
	   (error nil))  */
	enabled = internal_condition_case_1 (Feval, tem, Qerror,
					     menu_item_enabled_p_1);
    }
  return enabled;
}

/* Look through KEYMAPS, a vector of keymaps that is NMAPS long,
   and generate menu panes for them in menu_items.
   If NOTREAL is nonzero,
   don't bother really computing whether an item is enabled.  */

static HMENU 
keymap_panes (lpmm, keymaps, nmaps, notreal)
     menu_map * lpmm;
     Lisp_Object *keymaps;
     int nmaps;
     int notreal;
{
  int mapno;
  
  //    init_menu_items (lpmm);
  
  if (nmaps > 1) 
    {
      HMENU hmenu;
      
      if (!notreal) 
	{
	  hmenu = CreateMenu ();
	    
	  if (!hmenu) return (NULL);
	} 
      else 
	{
	  hmenu = NULL;
	}
      
      /* Loop over the given keymaps, making a pane for each map.
	 But don't make a pane that is empty--ignore that map instead.
	 P is the number of panes we have made so far.  */
      for (mapno = 0; mapno < nmaps; mapno++)
	{
	  HMENU new_hmenu;
	  
	  new_hmenu = single_keymap_panes (lpmm, keymaps[mapno],
					   Qnil, Qnil, notreal);
	  
	  if (!notreal && new_hmenu)
	    {
	      AppendMenu (hmenu, MF_POPUP, (UINT)new_hmenu, "");
	    }
	}

	return (hmenu);
    } 
  else 
    {
      return (single_keymap_panes (lpmm, keymaps[0], Qnil, Qnil, notreal));
    }
}

/* This is a recursive subroutine of keymap_panes.
   It handles one keymap, KEYMAP.
   The other arguments are passed along
   or point to local variables of the previous function.
   If NOTREAL is nonzero,
   don't bother really computing whether an item is enabled.  */

HMENU 
single_keymap_panes (lpmm, keymap, pane_name, prefix, notreal)
     menu_map * lpmm;
     Lisp_Object keymap;
     Lisp_Object pane_name;
     Lisp_Object prefix;
     int notreal;
{
  Lisp_Object pending_maps;
  Lisp_Object tail, item, item1, item_string, table;
  HMENU hmenu;
  struct gcpro gcpro1, gcpro2, gcpro3, gcpro4;
  
  if (!notreal) 
    {
      hmenu = CreateMenu ();
      if (hmenu == NULL) return NULL;
    } 
  else 
    {
      hmenu = NULL;
    }
  
  pending_maps = Qnil;
  
  for (tail = keymap; XTYPE (tail) == Lisp_Cons; tail = XCONS (tail)->cdr)
    {
      /* Look at each key binding, and if it has a menu string,
	 make a menu item from it.  */
      
      item = XCONS (tail)->car;
      
      if (CONSP (item))
	{
	  item1 = XCONS (item)->cdr;
	  
	  if (XTYPE (item1) == Lisp_Cons)
	    {
	      item_string = XCONS (item1)->car;
	      if (XTYPE (item_string) == Lisp_String)
		{
		  /* This is the real definition--the function to run.  */
		  
		  Lisp_Object def;
		  
		  /* These are the saved equivalent keyboard key sequence
		     and its key-description.  */
		  
		  Lisp_Object descrip;
		  Lisp_Object tem, enabled;
		  
		  /* GCPRO because ...enabled_p will call eval
		     and ..._equiv_key may autoload something.
		     Protecting KEYMAP preserves everything we use;
		     aside from that, must protect whatever might be
		     a string.  Since there's no GCPRO5, we refetch
		     item_string instead of protecting it.  */
		  
		  descrip = def = Qnil;
		  GCPRO4 (keymap, pending_maps, def, prefix);
		  
		  def = menu_item_equiv_key (item_string, item1, &descrip);
		  enabled = menu_item_enabled_p (def, notreal);
		    
		  UNGCPRO;
		  
		  item_string = XCONS (item1)->car;
		  
		  tem = Fkeymapp (def);
		  if (XSTRING (item_string)->data[0] == '@' && !NILP (tem))
		    {
		      pending_maps = Fcons (Fcons (def, 
						   Fcons (item_string, 
							  XCONS (item)->car)),
					    pending_maps);
		    }
		  else
		    {
		      Lisp_Object submap;

		      GCPRO4 (keymap, pending_maps, item, item_string);
		      
		      submap = get_keymap_1 (def, 0, 1);
		      
		      UNGCPRO;
		      
		      if (NILP (submap))
			{
			  if (!notreal) 
			    {
			      add_menu_item (lpmm,
					     hmenu,
					     item_string,
					     !NILP (enabled),
					     Fcons (XCONS (item)->car, prefix));
			    }
			}
		      else
			/* Display a submenu.  */
			{
			  HMENU new_hmenu = single_keymap_panes (lpmm,
								 submap,
								 item_string,
								 XCONS (item)->car,
								 notreal);

			  if (!notreal)
			    {
			      AppendMenu (hmenu, MF_POPUP,
					  (UINT)new_hmenu,
					  (char *) XSTRING (item_string)->data);
			    }
			}
		    }
		}
	    }
	}
      else if (VECTORP (item))
	{
	  /* Loop over the char values represented in the vector.  */
	  int len = XVECTOR (item)->size;
	  int c;
	  for (c = 0; c < len; c++)
	    {
	      Lisp_Object character;
	      XSETFASTINT (character, c);
	      item1 = XVECTOR (item)->contents[c];
	      if (CONSP (item1))
		{
		  item_string = XCONS (item1)->car;
		  if (STRINGP (item_string))
		    {
		      Lisp_Object def;
		      
		      /* These are the saved equivalent keyboard key sequence
			 and its key-description.  */
		      Lisp_Object descrip;
		      Lisp_Object tem, enabled;
		      
		      /* GCPRO because ...enabled_p will call eval
			 and ..._equiv_key may autoload something.
			 Protecting KEYMAP preserves everything we use;
			 aside from that, must protect whatever might be
			 a string.  Since there's no GCPRO5, we refetch
			 item_string instead of protecting it.  */
		      GCPRO4 (keymap, pending_maps, def, descrip);
		      descrip = def = Qnil;
		      
		      def = menu_item_equiv_key (item_string, item1, &descrip);
		      enabled = menu_item_enabled_p (def, notreal);
		      
		      UNGCPRO;
		      
		      item_string = XCONS (item1)->car;
		      
		      tem = Fkeymapp (def);
		      if (XSTRING (item_string)->data[0] == '@' && !NILP (tem))
			pending_maps = Fcons (Fcons (def, Fcons (item_string, character)),
					      pending_maps);
		      else
			{
			  Lisp_Object submap;
			  
			  GCPRO4 (keymap, pending_maps, descrip, item_string);
			    
			  submap = get_keymap_1 (def, 0, 1);
			  
			  UNGCPRO;
			  
			  if (NILP (submap))
			    {
			      if (!notreal) 
				{
				  add_menu_item (lpmm,
						 hmenu,
						 item_string,
						 !NILP (enabled),
						 character);
				}
			    }
			  else
			    /* Display a submenu.  */
			    {
			      HMENU new_hmenu = single_keymap_panes (lpmm,
								     submap,
								     Qnil,
								     character,
								     notreal);
			      
			      if (!notreal)
				{
				  AppendMenu (hmenu,MF_POPUP,
					      (UINT)new_hmenu,
					      (char *)XSTRING (item_string)->data);
				}
			    }
			}
		    }
		}
	    }
	}
    }

  /* Process now any submenus which want to be panes at this level.  */
  while (!NILP (pending_maps))
    {
      Lisp_Object elt, eltcdr, string;
      elt = Fcar (pending_maps);
      eltcdr = XCONS (elt)->cdr;
      string = XCONS (eltcdr)->car;
      /* We no longer discard the @ from the beginning of the string here.
	 Instead, we do this in win32menu_show.  */
      {
	HMENU new_hmenu = single_keymap_panes (lpmm,
					       Fcar (elt),
					       string,
					       XCONS (eltcdr)->cdr, notreal);
	    
	if (!notreal)
	  {
	    AppendMenu (hmenu, MF_POPUP,
			(UINT)new_hmenu,
			(char *) XSTRING (string)->data);
	  }
      }

      pending_maps = Fcdr (pending_maps);
    }
  
    return (hmenu);
}

/* Push all the panes and items of a menu described by the
   alist-of-alists MENU.
   This handles old-fashioned calls to x-popup-menu.  */

static HMENU 
list_of_panes (lpmm, menu)
     menu_map * lpmm;
     Lisp_Object menu;
{
  Lisp_Object tail;
  HMENU hmenu;
  
  hmenu = CreateMenu ();
  if (hmenu == NULL) return NULL;
  
  //    init_menu_items (lpmm);
  
  for (tail = menu; !NILP (tail); tail = Fcdr (tail))
    {
      Lisp_Object elt, pane_name, pane_data;
      HMENU new_hmenu;

      elt = Fcar (tail);
      pane_name = Fcar (elt);
      CHECK_STRING (pane_name, 0);
      pane_data = Fcdr (elt);
      CHECK_CONS (pane_data, 0);

      new_hmenu = list_of_items (lpmm, pane_data);
      if (new_hmenu == NULL) goto error;

      AppendMenu (hmenu, MF_POPUP, (UINT)new_hmenu,
		  (char *) XSTRING (pane_name)->data);
    }

  return (hmenu);
  
 error:
  DestroyMenu (hmenu);
  
  return (NULL);
}

/* Push the items in a single pane defined by the alist PANE.  */

static HMENU 
list_of_items (lpmm, pane)
     menu_map * lpmm;
     Lisp_Object pane;
{
  Lisp_Object tail, item, item1;
  HMENU hmenu;

  hmenu = CreateMenu ();
  if (hmenu == NULL) return NULL;

  for (tail = pane; !NILP (tail); tail = Fcdr (tail))
    {
      item = Fcar (tail);
      if (STRINGP (item))
	add_menu_item (lpmm, hmenu, item, Qnil, Qnil);
      else if (NILP (item))
	add_left_right_boundary ();
      else
	{
	  CHECK_CONS (item, 0);
	  item1 = Fcar (item);
	  CHECK_STRING (item1, 1);
	  add_menu_item (lpmm, hmenu, item1, Qt, Fcdr (item));
	}
    }

  return (hmenu);
}


HMENU 
create_menu_items (lpmm, menu, notreal)
     menu_map * lpmm;
     Lisp_Object menu;
     int notreal;
{
  Lisp_Object title;
  Lisp_Object keymap, tem;
  HMENU hmenu;
  
  title = Qnil;
  
  /* Decode the menu items from what was specified.  */
  
  keymap = Fkeymapp (menu);
  tem = Qnil;
  if (XTYPE (menu) == Lisp_Cons)
    tem = Fkeymapp (Fcar (menu));
  
  if (!NILP (keymap))
    {
      /* We were given a keymap.  Extract menu info from the keymap.  */
      Lisp_Object prompt;
      keymap = get_keymap (menu);
	
      /* Extract the detailed info to make one pane.  */
      hmenu = keymap_panes (lpmm, &keymap, 1, notreal);
	
#if 0
      /* Search for a string appearing directly as an element of the keymap.
	 That string is the title of the menu.  */
      prompt = map_prompt (keymap);

      /* Make that be the pane title of the first pane.  */
      if (!NILP (prompt) && menu_items_n_panes >= 0)
	XVECTOR (menu_items)->contents[MENU_ITEMS_PANE_NAME] = prompt;
#endif
    }
  else if (!NILP (tem))
    {
      /* We were given a list of keymaps.  */
      int nmaps = XFASTINT (Flength (menu));
      Lisp_Object *maps
	= (Lisp_Object *) alloca (nmaps * sizeof (Lisp_Object));
      int i;
      
      title = Qnil;
      
      /* The first keymap that has a prompt string
	 supplies the menu title.  */
      for (tem = menu, i = 0; XTYPE (tem) == Lisp_Cons; tem = Fcdr (tem))
	{
	  Lisp_Object prompt;
	    
	  maps[i++] = keymap = get_keymap (Fcar (tem));
#if 0	    
	  prompt = map_prompt (keymap);
	  if (NILP (title) && !NILP (prompt))
	    title = prompt;
#endif
	}
      
      /* Extract the detailed info to make one pane.  */
      hmenu = keymap_panes (lpmm, maps, nmaps, notreal);
	
#if 0
      /* Make the title be the pane title of the first pane.  */
      if (!NILP (title) && menu_items_n_panes >= 0)
	XVECTOR (menu_items)->contents[MENU_ITEMS_PANE_NAME] = title;
#endif
    }
  else
    {
      /* We were given an old-fashioned menu.  */
      title = Fcar (menu);
      CHECK_STRING (title, 1);
	
      hmenu = list_of_panes (lpmm, Fcdr (menu));
    }
  
  return (hmenu);
}

/* This is a recursive subroutine of keymap_panes.
   It handles one keymap, KEYMAP.
   The other arguments are passed along
   or point to local variables of the previous function.
   If NOTREAL is nonzero,
   don't bother really computing whether an item is enabled.  */

Lisp_Object 
get_single_keymap_event (keymap, lpnum)
     Lisp_Object keymap;
     int * lpnum;
{
  Lisp_Object pending_maps;
  Lisp_Object tail, item, item1, item_string, table;
  struct gcpro gcpro1, gcpro2, gcpro3, gcpro4;
  
  pending_maps = Qnil;
  
  for (tail = keymap; XTYPE (tail) == Lisp_Cons; tail = XCONS (tail)->cdr)
    {
      /* Look at each key binding, and if it has a menu string,
	 make a menu item from it.  */
      
      item = XCONS (tail)->car;
      
      if (XTYPE (item) == Lisp_Cons)
	{
	  item1 = XCONS (item)->cdr;
	  
	  if (CONSP (item1))
	    {
	      item_string = XCONS (item1)->car;
	      if (XTYPE (item_string) == Lisp_String)
		{
		  /* This is the real definition--the function to run.  */
		  
		  Lisp_Object def;
		  
		  /* These are the saved equivalent keyboard key sequence
		     and its key-description.  */
		  
		  Lisp_Object descrip;
		  Lisp_Object tem, enabled;
		  
		  /* GCPRO because ...enabled_p will call eval
		     and ..._equiv_key may autoload something.
		     Protecting KEYMAP preserves everything we use;
		     aside from that, must protect whatever might be
		     a string.  Since there's no GCPRO5, we refetch
		     item_string instead of protecting it.  */
		  
		  descrip = def = Qnil;
		  GCPRO3 (keymap, pending_maps, def);
		  
		  def = menu_item_equiv_key (item_string, item1, &descrip);
		  
		  UNGCPRO;
		  
		  item_string = XCONS (item1)->car;
		  
		  tem = Fkeymapp (def);
		  if (XSTRING (item_string)->data[0] == '@' && !NILP (tem))
		    {
		      pending_maps = Fcons (Fcons (def, 
						   Fcons (item_string, 
							  XCONS (item)->car)),
					    pending_maps);
		    }
		  else
		    {
		      Lisp_Object submap;
		      
		      GCPRO4 (keymap, pending_maps, item, item_string);
		      
		      submap = get_keymap_1 (def, 0, 1);
		      
		      UNGCPRO;
		      
		      if (NILP (submap))
			{
			  if (--(*lpnum) == 0) 
			    {
			      return (Fcons (XCONS (item)->car, Qnil));
			    }
			}
		      else
			/* Display a submenu.  */
			{
			  Lisp_Object event = get_single_keymap_event (submap,
								       lpnum);
			  
			  if (*lpnum <= 0)
			    {
			      if (!NILP (XCONS (item)->car))
				event = Fcons (XCONS (item)->car, event);
			      
			      return (event);
			    }
			}
		    }
		}
	    }
	}
      else if (VECTORP (item))
	{
	  /* Loop over the char values represented in the vector.  */
	  int len = XVECTOR (item)->size;
	  int c;
	  for (c = 0; c < len; c++)
	    {
	      Lisp_Object character;
	      XSETFASTINT (character, c);
	      item1 = XVECTOR (item)->contents[c];
	      if (XTYPE (item1) == Lisp_Cons)
		{
		  item_string = XCONS (item1)->car;
		  if (XTYPE (item_string) == Lisp_String)
		    {
		      Lisp_Object def;
		      
		      /* These are the saved equivalent keyboard key sequence
			 and its key-description.  */
		      Lisp_Object descrip;
		      Lisp_Object tem, enabled;
		      
		      /* GCPRO because ...enabled_p will call eval
			 and ..._equiv_key may autoload something.
			 Protecting KEYMAP preserves everything we use;
			 aside from that, must protect whatever might be
			 a string.  Since there's no GCPRO5, we refetch
			 item_string instead of protecting it.  */
		      GCPRO4 (keymap, pending_maps, def, descrip);
		      descrip = def = Qnil;

		      def = menu_item_equiv_key (item_string, item1, &descrip);
		      
		      UNGCPRO;
		      
		      item_string = XCONS (item1)->car;
		      
		      tem = Fkeymapp (def);
		      if (XSTRING (item_string)->data[0] == '@' && !NILP (tem))
			pending_maps = Fcons (Fcons (def, Fcons (item_string, character)),
					      pending_maps);
		      else
			{
			  Lisp_Object submap;
			  
			  GCPRO4 (keymap, pending_maps, descrip, item_string);
			  
			  submap = get_keymap_1 (def, 0, 1);
			    
			  UNGCPRO;
			  
			  if (NILP (submap))
			    {
			      if (--(*lpnum) == 0) 
				{
				  return (Fcons (character, Qnil));
				}
			    }
			  else
			    /* Display a submenu.  */
			    {
			      Lisp_Object event = get_single_keymap_event (submap,
									   lpnum);
				
			      if (*lpnum <= 0)
				{
				  if (!NILP (character))
				    event = Fcons (character, event);
				    
				  return (event);
				}
			    }
			}
		    }
		}
	    }
	}
    }
  
  /* Process now any submenus which want to be panes at this level.  */
  while (!NILP (pending_maps))
    {
      Lisp_Object elt, eltcdr, string;
      elt = Fcar (pending_maps);
      eltcdr = XCONS (elt)->cdr;
      string = XCONS (eltcdr)->car;
      /* We no longer discard the @ from the beginning of the string here.
	 Instead, we do this in win32menu_show.  */
      {
	Lisp_Object event = get_single_keymap_event (Fcar (elt), lpnum);

	if (*lpnum <= 0)
	  {
	    if (!NILP (XCONS (eltcdr)->cdr))
	      event = Fcons (XCONS (eltcdr)->cdr, event);

	    return (event);
	  }
      }

      pending_maps = Fcdr (pending_maps);
    }
  
  return (Qnil);
}

/* Look through KEYMAPS, a vector of keymaps that is NMAPS long,
   and generate menu panes for them in menu_items.
   If NOTREAL is nonzero,
   don't bother really computing whether an item is enabled.  */

static Lisp_Object 
get_keymap_event (keymaps, nmaps, lpnum)
     Lisp_Object *keymaps;
     int nmaps;
     int * lpnum;
{
  int mapno;
  Lisp_Object event = Qnil;
  
  /* Loop over the given keymaps, making a pane for each map.
     But don't make a pane that is empty--ignore that map instead.
     P is the number of panes we have made so far.  */
  for (mapno = 0; mapno < nmaps; mapno++)
    {
      event = get_single_keymap_event (keymaps[mapno], lpnum);

      if (*lpnum <= 0) break;
    }
  
  return (event);
}

static Lisp_Object 
get_list_of_items_event (pane, lpnum)
     Lisp_Object pane;
     int * lpnum;
{
  Lisp_Object tail, item, item1;
  
  for (tail = pane; !NILP (tail); tail = Fcdr (tail))
    {
      item = Fcar (tail);
      if (STRINGP (item))
	{
	  if (-- (*lpnum) == 0) 
	    {
	      return (Qnil);
	    }
	}
      else if (!NILP (item))
	{
	  if (--(*lpnum) == 0) 
	    {
	      CHECK_CONS (item, 0);
	      return (Fcdr (item));
	    }
	}
    }
  
  return (Qnil);
}

/* Push all the panes and items of a menu described by the
   alist-of-alists MENU.
   This handles old-fashioned calls to x-popup-menu.  */

static Lisp_Object 
get_list_of_panes_event (menu, lpnum)
     Lisp_Object menu;
     int * lpnum;
{
  Lisp_Object tail;

  for (tail = menu; !NILP (tail); tail = Fcdr (tail))
    {
      Lisp_Object elt, pane_name, pane_data;
      Lisp_Object event;

      elt = Fcar (tail);
      pane_data = Fcdr (elt);
      CHECK_CONS (pane_data, 0);

      event = get_list_of_items_event (pane_data, lpnum);

      if (*lpnum <= 0) 
	{
	  return (event);
	}
    }

  return (Qnil);
}

Lisp_Object 
get_menu_event (menu, lpnum)
     Lisp_Object menu;
     int * lpnum;
{
  Lisp_Object keymap, tem;
  Lisp_Object event;
    
  /* Decode the menu items from what was specified.  */
    
  keymap = Fkeymapp (menu);
  tem = Qnil;
  if (XTYPE (menu) == Lisp_Cons)
    tem = Fkeymapp (Fcar (menu));

  if (!NILP (keymap))
    {
      keymap = get_keymap (menu);
	
      event = get_keymap_event (menu, 1, lpnum);
    }
  else if (!NILP (tem))
    {
      /* We were given a list of keymaps.  */
      int nmaps = XFASTINT (Flength (menu));
      Lisp_Object *maps
	= (Lisp_Object *) alloca (nmaps * sizeof (Lisp_Object));
      int i;
	
      /* The first keymap that has a prompt string
	 supplies the menu title.  */
      for (tem = menu, i = 0; XTYPE (tem) == Lisp_Cons; tem = Fcdr (tem))
	{
	  Lisp_Object prompt;
	    
	  maps[i++] = keymap = get_keymap (Fcar (tem));
	}
	
      event = get_keymap_event (maps, nmaps, lpnum);
    }
  else
    {
      /* We were given an old-fashioned menu.  */
      event = get_list_of_panes_event (Fcdr (menu), lpnum);
    }

  return (event);
}

DEFUN ("x-popup-menu", Fx_popup_menu, Sx_popup_menu, 2, 2, 0,
       "Pop up a deck-of-cards menu and return user's selection.\n\
POSITION is a position specification.  This is either a mouse button event\n\
or a list ((XOFFSET YOFFSET) WINDOW)\n\
where XOFFSET and YOFFSET are positions in pixels from the top left\n\
corner of WINDOW's frame.  (WINDOW may be a frame object instead of a window.)\n\
This controls the position of the center of the first line\n\
in the first pane of the menu, not the top left of the menu as a whole.\n\
If POSITION is t, it means to use the current mouse position.\n\
\n\
MENU is a specifier for a menu.  For the simplest case, MENU is a keymap.\n\
The menu items come from key bindings that have a menu string as well as\n\
a definition; actually, the \"definition\" in such a key binding looks like\n\
\(STRING . REAL-DEFINITION).  To give the menu a title, put a string into\n\
the keymap as a top-level element.\n\n\
You can also use a list of keymaps as MENU.\n\
  Then each keymap makes a separate pane.\n\
When MENU is a keymap or a list of keymaps, the return value\n\
is a list of events.\n\n\
Alternatively, you can specify a menu of multiple panes\n\
  with a list of the form (TITLE PANE1 PANE2...),\n\
where each pane is a list of form (TITLE ITEM1 ITEM2...).\n\
Each ITEM is normally a cons cell (STRING . VALUE);\n\
but a string can appear as an item--that makes a nonselectable line\n\
in the menu.\n\
With this form of menu, the return value is VALUE from the chosen item.\n\
\n\
If POSITION is nil, don't display the menu at all, just precalculate the\n\
cached information about equivalent key sequences.")
    (position, menu)
    Lisp_Object position, menu;
{
  int number_of_panes, panes;
  Lisp_Object keymap, tem;
  int xpos, ypos;
  Lisp_Object title;
  char *error_name;
  Lisp_Object selection;
  int i, j;
  FRAME_PTR f;
  Lisp_Object x, y, window;
  int keymaps = 0;
  int menubarp = 0;
  struct gcpro gcpro1;
  HMENU hmenu;
  menu_map mm;
  
  if (! NILP (position))
    {
      /* Decode the first argument: find the window and the coordinates.  */
      if (EQ (position, Qt))
	{
	  /* Use the mouse's current position.  */
	  FRAME_PTR new_f = 0;
	  Lisp_Object bar_window;
	  int part;
	  unsigned long time;
	  
	  if (mouse_position_hook)
	    (*mouse_position_hook) (&new_f, &bar_window, &part, &x, &y, &time);
	  if (new_f != 0)
	    XSETFRAME (window, new_f);
	  else
	    {
	      window = selected_window;
	      XSETFASTINT (x, 0);
	      XSETFASTINT (y, 0);
	    }
	}
      else
	{
	  tem = Fcar (position);
	  if (CONSP (tem))
	    {
	      window = Fcar (Fcdr (position));
	      x = Fcar (tem);
	      y = Fcar (Fcdr (tem));
	    }
	  else
	    {
	      tem = Fcar (Fcdr (position)); /* EVENT_START (position) */
	      window = Fcar (tem); /* POSN_WINDOW (tem) */
	      tem = Fcar (Fcdr (Fcdr (tem))); /* POSN_WINDOW_POSN (tem) */
	      x = Fcar (tem);
	      y = Fcdr (tem);

	      /* Determine whether this menu is handling a menu bar click.  */
	      tem = Fcar (Fcdr (Fcar (Fcdr (position))));
	      if (CONSP (tem) && EQ (Fcar (tem), Qmenu_bar))
		menubarp = 1;
	    }
	}
      
      CHECK_NUMBER (x, 0);
      CHECK_NUMBER (y, 0);

      /* Decode where to put the menu.  */
      
      if (FRAMEP (window))
	{
	  f = XFRAME (window);

	  xpos = 0;
	  ypos = 0;
	}
      else if (WINDOWP (window))
	{
	  CHECK_LIVE_WINDOW (window, 0);
	  f = XFRAME (WINDOW_FRAME (XWINDOW (window)));
	  
	  xpos = (FONT_WIDTH (f->output_data.win32->font) * XWINDOW (window)->left);
	  ypos = (f->output_data.win32->line_height * XWINDOW (window)->top);
	}
      else
	/* ??? Not really clean; should be CHECK_WINDOW_OR_FRAME,
	   but I don't want to make one now.  */
	CHECK_WINDOW (window, 0);
      
      xpos += XINT (x);
      ypos += XINT (y);
    }
  
  title = Qnil;
  GCPRO1 (title);
  
  discard_menu_items (&mm);
  hmenu = create_menu_items (&mm, menu, NILP (position));
  
  if (NILP (position))
    {
      discard_menu_items (&mm);
      UNGCPRO;
      return Qnil;
    }
  
  /* Display them in a menu.  */
  BLOCK_INPUT;
  
  selection = win32menu_show (f, xpos, ypos, menu, &hmenu, &error_name);
  
  UNBLOCK_INPUT;
  
  discard_menu_items (&mm);
  DestroyMenu (hmenu);
  
  UNGCPRO;
  
  if (error_name) error (error_name);
  return selection;
}

DEFUN ("x-popup-dialog", Fx_popup_dialog, Sx_popup_dialog, 2, 2, 0,
       "Pop up a dialog box and return user's selection.\n\
POSITION specifies which frame to use.\n\
This is normally a mouse button event or a window or frame.\n\
If POSITION is t, it means to use the frame the mouse is on.\n\
The dialog box appears in the middle of the specified frame.\n\
\n\
CONTENTS specifies the alternatives to display in the dialog box.\n\
It is a list of the form (TITLE ITEM1 ITEM2...).\n\
Each ITEM is a cons cell (STRING . VALUE).\n\
The return value is VALUE from the chosen item.\n\n\
An ITEM may also be just a string--that makes a nonselectable item.\n\
An ITEM may also be nil--that means to put all preceding items\n\
on the left of the dialog box and all following items on the right.\n\
\(By default, approximately half appear on each side.)")
    (position, contents)
    Lisp_Object position, contents;
{
  FRAME_PTR f;
  Lisp_Object window;
  
  /* Decode the first argument: find the window or frame to use.  */
  if (EQ (position, Qt))
    {
      /* Decode the first argument: find the window and the coordinates.  */
      if (EQ (position, Qt))
	window = selected_window;
    }
  else if (CONSP (position))
    {
      Lisp_Object tem;
      tem = Fcar (position);
      if (XTYPE (tem) == Lisp_Cons)
	window = Fcar (Fcdr (position));
      else
	{
	  tem = Fcar (Fcdr (position));	/* EVENT_START (position) */
	  window = Fcar (tem);	/* POSN_WINDOW (tem) */
	}
    }
  else if (WINDOWP (position) || FRAMEP (position))
    window = position;
  
  /* Decode where to put the menu.  */
  
  if (FRAMEP (window))
    f = XFRAME (window);
  else if (WINDOWP (window))
    {
      CHECK_LIVE_WINDOW (window, 0);
      f = XFRAME (WINDOW_FRAME (XWINDOW (window)));
    }
  else
    /* ??? Not really clean; should be CHECK_WINDOW_OR_FRAME,
       but I don't want to make one now.  */
    CHECK_WINDOW (window, 0);
  
#if 1
  /* Display a menu with these alternatives
     in the middle of frame F.  */
  {
    Lisp_Object x, y, frame, newpos;
    XSETFRAME (frame, f);
    XSETINT (x, x_pixel_width (f) / 2);
    XSETINT (y, x_pixel_height (f) / 2);
    newpos = Fcons (Fcons (x, Fcons (y, Qnil)), Fcons (frame, Qnil));

    return Fx_popup_menu (newpos,
			  Fcons (Fcar (contents), Fcons (contents, Qnil)));
  }
#else
  {
    Lisp_Object title;
    char *error_name;
    Lisp_Object selection;

    /* Decode the dialog items from what was specified.  */
    title = Fcar (contents);
    CHECK_STRING (title, 1);

    list_of_panes (Fcons (contents, Qnil));

    /* Display them in a dialog box.  */
    BLOCK_INPUT;
    selection = win32_dialog_show (f, 0, 0, title, &error_name);
    UNBLOCK_INPUT;

    discard_menu_items ();

    if (error_name) error (error_name);
    return selection;
  }
#endif
}

Lisp_Object 
get_frame_menubar_event (f, num)
     FRAME_PTR f;
     int num;
{
  Lisp_Object tail, items;
  int i;
  struct gcpro gcpro1;
  
  BLOCK_INPUT;
  
  GCPRO1 (items);
  
  if (NILP (items = FRAME_MENU_BAR_ITEMS (f)))
    items = FRAME_MENU_BAR_ITEMS (f) = menu_bar_items (FRAME_MENU_BAR_ITEMS (f));
  
  for (i = 0; i < XVECTOR (items)->size; i += 4)
    {
      Lisp_Object event;
	
      event = get_menu_event (XVECTOR (items)->contents[i + 2], &num);

      if (num <= 0)
	{
	  UNGCPRO;
	  UNBLOCK_INPUT;
	  return (Fcons (XVECTOR (items)->contents[i], event));
	}
    }
  
  UNGCPRO;
  UNBLOCK_INPUT;
  
  return (Qnil);
}

void 
set_frame_menubar (f, first_time)
     FRAME_PTR f;
     int first_time;
{
  Lisp_Object tail, items;
  HMENU hmenu;
  int i;
  struct gcpro gcpro1;
  menu_map mm;
  int count = specpdl_ptr - specpdl;

  struct buffer *prev = current_buffer;
  Lisp_Object buffer;

  buffer = XWINDOW (FRAME_SELECTED_WINDOW (f))->buffer;
  specbind (Qinhibit_quit, Qt);
  /* Don't let the debugger step into this code
     because it is not reentrant.  */
  specbind (Qdebug_on_next_call, Qnil);

  record_unwind_protect (Fstore_match_data, Fmatch_data ());
  if (NILP (Voverriding_local_map_menu_flag))
    {
      specbind (Qoverriding_terminal_local_map, Qnil);
      specbind (Qoverriding_local_map, Qnil);
    }

  set_buffer_internal_1 (XBUFFER (buffer));

  /* Run the Lucid hook.  */
  call1 (Vrun_hooks, Qactivate_menubar_hook);
  /* If it has changed current-menubar from previous value,
     really recompute the menubar from the value.  */
  if (! NILP (Vlucid_menu_bar_dirty_flag))
    call0 (Qrecompute_lucid_menubar);
  safe_run_hooks (Qmenu_bar_update_hook);
  
  BLOCK_INPUT;
  
  GCPRO1 (items);
  
  items = FRAME_MENU_BAR_ITEMS (f);
  if (NILP (items))
    items = FRAME_MENU_BAR_ITEMS (f) = menu_bar_items (FRAME_MENU_BAR_ITEMS (f));
  
  hmenu = CreateMenu ();
  
  if (!hmenu) goto error;
  
  discard_menu_items (&mm);
  UNBLOCK_INPUT;

  for (i = 0; i < XVECTOR (items)->size; i += 4)
    {
      Lisp_Object string;
      int keymaps;
      CHAR *error;
      HMENU new_hmenu;
      
      string = XVECTOR (items)->contents[i + 1];
      if (NILP (string))
	break;
      
      /* Input must not be blocked here
	 because we call general Lisp code and internal_condition_case_1.  */
      new_hmenu = create_menu_items (&mm,
				     XVECTOR (items)->contents[i + 2],
				     0);
      
      if (!new_hmenu)
	continue;
      
      BLOCK_INPUT;
      AppendMenu (hmenu, MF_POPUP, (UINT)new_hmenu,
		  (char *) XSTRING (string)->data);
      UNBLOCK_INPUT;
    }
  
  BLOCK_INPUT;
  {
    HMENU old = GetMenu (FRAME_WIN32_WINDOW (f));
    SetMenu (FRAME_WIN32_WINDOW (f), hmenu);
    DestroyMenu (old);
  }
  
 error:
  set_buffer_internal_1 (prev);
  UNGCPRO;
  UNBLOCK_INPUT;
  unbind_to (count, Qnil);
}

void 
free_frame_menubar (f)
     FRAME_PTR f;
{
  BLOCK_INPUT;

  {
    HMENU old = GetMenu (FRAME_WIN32_WINDOW (f));
    SetMenu (FRAME_WIN32_WINDOW (f), NULL);
    DestroyMenu (old);
  }
    
  UNBLOCK_INPUT;
}
/* Called from Fwin32_create_frame to create the initial menubar of a frame
   before it is mapped, so that the window is mapped with the menubar already
   there instead of us tacking it on later and thrashing the window after it
   is visible.  */
void 
initialize_frame_menubar (f)
     FRAME_PTR f;
{
  set_frame_menubar (f, 1);
}

#if 0
/* If the mouse has moved to another menu bar item,
   return 1 and unread a button press event for that item.
   Otherwise return 0.  */

static int
check_mouse_other_menu_bar (f)
     FRAME_PTR f;
{
  FRAME_PTR new_f;
  Lisp_Object bar_window;
  int part;
  Lisp_Object x, y;
  unsigned long time;

  (*mouse_position_hook) (&new_f, &bar_window, &part, &x, &y, &time);

  if (f == new_f && other_menu_bar_item_p (f, x, y))
    {
      unread_menu_bar_button (f, x);
      return 1;
    }

  return 0;
}
#endif


#if 0
static HMENU 
create_menu (keymaps, error)
     int keymaps;
     char **error;
{
  HMENU hmenu = NULL;   /* the menu we are currently working on */
  HMENU first_hmenu = NULL;
  
  HMENU *submenu_stack = (HMENU *) alloca (menu_items_used * sizeof (HMENU));
  Lisp_Object *subprefix_stack = (Lisp_Object *) alloca (menu_items_used *
							 sizeof (Lisp_Object));
  int submenu_depth = 0;
  int i;
  
  if (menu_items_used <= MENU_ITEMS_PANE_LENGTH)
    {
      *error = "Empty menu";
      return NULL;
    }
  
  i = 0;
  
  /* Loop over all panes and items, filling in the tree.  */
  
  while (i < menu_items_used)
    {
      if (EQ (XVECTOR (menu_items)->contents[i], Qnil))
	{
	  submenu_stack[submenu_depth++] = hmenu;
	  i++;
	}
      else if (EQ (XVECTOR (menu_items)->contents[i], Qlambda))
	{
	  hmenu = submenu_stack[--submenu_depth];
	  i++;
	}
#if 0
else if (EQ (XVECTOR (menu_items)->contents[i], Qt)
	 && submenu_depth != 0)
  i += MENU_ITEMS_PANE_LENGTH;
#endif
      /* Ignore a nil in the item list.
	 It's meaningful only for dialog boxes.  */
else if (EQ (XVECTOR (menu_items)->contents[i], Qquote))
  i += 1;
else if (EQ (XVECTOR (menu_items)->contents[i], Qt))
  {
    /* Create a new pane.  */
    
    Lisp_Object pane_name;
    char *pane_string;
    
    pane_name = XVECTOR (menu_items)->contents[i + MENU_ITEMS_PANE_NAME];
    pane_string = (NILP (pane_name) ? "" : (char *) XSTRING (pane_name)->data);
    
    if (!hmenu || strcmp (pane_string, ""))
      {
	HMENU new_hmenu = CreateMenu ();
	
	if (!new_hmenu) 
	  {
	    *error = "Could not create menu pane";
	    goto error;
	  }
	
	if (hmenu)
	  {
	    AppendMenu (hmenu, MF_POPUP, (UINT)new_hmenu, pane_string);
	  }
	
	hmenu = new_hmenu;
	
	if (!first_hmenu) first_hmenu = hmenu;
      }
    i += MENU_ITEMS_PANE_LENGTH;
  }
else
  {
    /* Create a new item within current pane.  */

    Lisp_Object item_name, enable, descrip;
    UINT fuFlags;

    item_name = XVECTOR (menu_items)->contents[i + MENU_ITEMS_ITEM_NAME];
    enable = XVECTOR (menu_items)->contents[i + MENU_ITEMS_ITEM_ENABLE];
    //	  descrip = XVECTOR (menu_items)->contents[i + MENU_ITEMS_ITEM_EQUIV_KEY];

    if (((char *) XSTRING (item_name)->data)[0] == 0
	|| strcmp ((char *) XSTRING (item_name)->data, "--") == 0)
      fuFlags = MF_SEPARATOR;
    else if (NILP (enable) || !XUINT(enable))
      fuFlags = MF_STRING | MF_GRAYED;
    else
      fuFlags = MF_STRING;

    AppendMenu (hmenu,
		fuFlags,
		i,
		(char *) XSTRING (item_name)->data);

    //	  if (!NILP (descrip))
      //	    hmenu->key = (char *) XSTRING (descrip)->data;

    i += MENU_ITEMS_ITEM_LENGTH;
  }
}

  return (first_hmenu);
  
 error:
  if (first_hmenu) DestroyMenu (first_hmenu);
  return (NULL);
}

#endif

/* win32menu_show actually displays a menu using the panes and items in 
   menu_items and returns the value selected from it.
   There are two versions of win32menu_show, one for Xt and one for Xlib.
   Both assume input is blocked by the caller.  */

/* F is the frame the menu is for.
   X and Y are the frame-relative specified position,
   relative to the inside upper left corner of the frame F.
   MENUBARP is 1 if the click that asked for this menu came from the menu bar.
   KEYMAPS is 1 if this menu was specified with keymaps;
   in that case, we return a list containing the chosen item's value
   and perhaps also the pane's prefix.
   TITLE is the specified menu title.
   ERROR is a place to store an error message string in case of failure.
   (We return nil on failure, but the value doesn't actually matter.)  */


static Lisp_Object 
win32menu_show (f, x, y, menu, hmenu, error)
     FRAME_PTR f;
     int x;
     int y;
     Lisp_Object menu;
     HMENU hmenu;
     char **error;
{
  int i , menu_selection;
  POINT pos;
  
  *error = NULL;
  
  if (!hmenu)
    {
      *error = "Empty menu";
      return Qnil;
    }
  
  pos.x = x;
  pos.y = y;
    
  /* Offset the coordinates to root-relative.  */
  ClientToScreen (FRAME_WIN32_WINDOW (f), &pos);
  
#if 0
  /* If the mouse moves out of the menu before we show the menu,
     don't show it at all.  */
  if (check_mouse_other_menu_bar (f))
    {
      DestroyMenu (hmenu);
      return Qnil;
    }
#endif
  
  /* Display the menu.  */
  menu_selection = TrackPopupMenu (hmenu,
				   0x10,
				   pos.x, pos.y,
				   0,
				   FRAME_WIN32_WINDOW (f),
				   NULL);
  if (menu_selection == -1)
    {
      *error = "Invalid menu specification";
      return Qnil;
    }
  
  /* Find the selected item, and its pane, to return
     the proper value.  */
  
#if 1
  if (menu_selection > 0)
    {
      return get_menu_event (menu, menu_selection);
    }
#else
  if (menu_selection > 0 && menu_selection <= lpmm->menu_items_used)
    {
      return (XVECTOR (lpmm->menu_items)->contents[menu_selection - 1]);
    }
#endif
  
  return Qnil;
}

#if 0
static char * button_names [] = 
{
  "button1", "button2", "button3", "button4", "button5",
  "button6", "button7", "button8", "button9", "button10" 
};

static Lisp_Object
win32_dialog_show (f, menubarp, keymaps, title, error)
     FRAME_PTR f;
     int menubarp;
     int keymaps;
     Lisp_Object title;
     char **error;
{
  int i, nb_buttons=0;
  HMENU hmenu;
  char dialog_name[6];
  
  /* Number of elements seen so far, before boundary.  */
  int left_count = 0;
  /* 1 means we've seen the boundary between left-hand elts and right-hand.  */
  int boundary_seen = 0;
  
  *error = NULL;
  
  if (menu_items_n_panes > 1)
    {
      *error = "Multiple panes in dialog box";
      return Qnil;
    }
  
  /* Create a tree of widget_value objects
     representing the text label and buttons.  */
  {
    Lisp_Object pane_name, prefix;
    char *pane_string;
    pane_name = XVECTOR (menu_items)->contents[MENU_ITEMS_PANE_NAME];
    prefix = XVECTOR (menu_items)->contents[MENU_ITEMS_PANE_PREFIX];
    pane_string = (NILP (pane_name)
		   ? "" : (char *) XSTRING (pane_name)->data);  
    prev_wv = malloc_widget_value ();
    prev_wv->value = pane_string;
    if (keymaps && !NILP (prefix))
      prev_wv->name++;
    prev_wv->enabled = 1;
    prev_wv->name = "message";
    first_wv = prev_wv;
    
    /* Loop over all panes and items, filling in the tree.  */
    i = MENU_ITEMS_PANE_LENGTH;
    while (i < menu_items_used)
      {
	
	/* Create a new item within current pane.  */
	Lisp_Object item_name, enable, descrip;
	item_name = XVECTOR (menu_items)->contents[i + MENU_ITEMS_ITEM_NAME];
	enable = XVECTOR (menu_items)->contents[i + MENU_ITEMS_ITEM_ENABLE];
	descrip
	  = XVECTOR (menu_items)->contents[i + MENU_ITEMS_ITEM_EQUIV_KEY];
	
	if (NILP (item_name))
	  {
	    free_menubar_widget_value_tree (first_wv);
	    *error = "Submenu in dialog items";
	    return Qnil;
	  }
	if (EQ (item_name, Qquote))
	  {
	    /* This is the boundary between left-side elts
	       and right-side elts.  Stop incrementing right_count.  */
	    boundary_seen = 1;
	    i++;
	    continue;
	  }
	if (nb_buttons >= 10)
	  {
	    free_menubar_widget_value_tree (first_wv);
	    *error = "Too many dialog items";
	    return Qnil;
	  }
	
	wv = malloc_widget_value ();
	prev_wv->next = wv;
	wv->name = (char *) button_names[nb_buttons];
	if (!NILP (descrip))
	  wv->key = (char *) XSTRING (descrip)->data;
	wv->value = (char *) XSTRING (item_name)->data;
	wv->call_data = (void *) &XVECTOR (menu_items)->contents[i];
	wv->enabled = !NILP (enable);
	prev_wv = wv;
	
	if (! boundary_seen)
	  left_count++;
	
	nb_buttons++;
	i += MENU_ITEMS_ITEM_LENGTH;
      }
    
    /* If the boundary was not specified,
       by default put half on the left and half on the right.  */
    if (! boundary_seen)
      left_count = nb_buttons - nb_buttons / 2;
    
    wv = malloc_widget_value ();
    wv->name = dialog_name;
    
    /* Dialog boxes use a really stupid name encoding
       which specifies how many buttons to use
       and how many buttons are on the right.
       The Q means something also.  */
    dialog_name[0] = 'Q';
    dialog_name[1] = '0' + nb_buttons;
    dialog_name[2] = 'B';
    dialog_name[3] = 'R';
    /* Number of buttons to put on the right.  */
    dialog_name[4] = '0' + nb_buttons - left_count;
    dialog_name[5] = 0;
    wv->contents = first_wv;
    first_wv = wv;
  }
  
  /* Actually create the dialog.  */
  dialog_id = ++popup_id_tick;
  menu = lw_create_widget (first_wv->name, "dialog", dialog_id, first_wv,
			   f->output_data.win32->widget, 1, 0,
			   dialog_selection_callback, 0);
#if 0 /* This causes crashes, and seems to be redundant -- rms.  */
  lw_modify_all_widgets (dialog_id, first_wv, True);
#endif
  lw_modify_all_widgets (dialog_id, first_wv->contents, True);
  /* Free the widget_value objects we used to specify the contents.  */
  free_menubar_widget_value_tree (first_wv);
  
  /* No selection has been chosen yet.  */
  menu_item_selection = 0;
  
  /* Display the menu.  */
  lw_pop_up_all_widgets (dialog_id);
  
  /* Process events that apply to the menu.  */
  while (1)
    {
      XEvent event;
      
      XtAppNextEvent (Xt_app_con, &event);
      if (event.type == ButtonRelease)
	{
	  XtDispatchEvent (&event);
	  break;
	}
      else if (event.type == Expose)
	    process_expose_from_menu (event);
	XtDispatchEvent (&event);
      if (XtWindowToWidget(XDISPLAY event.xany.window) != menu)
	{
	  queue_tmp = (struct event_queue *) malloc (sizeof (struct event_queue));

	  if (queue_tmp != NULL) 
	    {
	      queue_tmp->event = event;
	      queue_tmp->next = queue;
	      queue = queue_tmp;
	    }
	}
    }
 pop_down:

  /* State that no mouse buttons are now held.
     That is not necessarily true, but the fiction leads to reasonable
     results, and it is a pain to ask which are actually held now
     or track this in the loop above.  */
  win32_mouse_grabbed = 0;
  
  /* Unread any events that we got but did not handle.  */
  while (queue != NULL) 
    {
      queue_tmp = queue;
      XPutBackEvent (XDISPLAY &queue_tmp->event);
      queue = queue_tmp->next;
      free ((char *)queue_tmp);
      /* Cause these events to get read as soon as we UNBLOCK_INPUT.  */
      interrupt_input_pending = 1;
    }
  
  /* Find the selected item, and its pane, to return
     the proper value.  */
  if (menu_item_selection != 0)
    {
      Lisp_Object prefix;
      
      prefix = Qnil;
      i = 0;
      while (i < menu_items_used)
	{
	  Lisp_Object entry;

	  if (EQ (XVECTOR (menu_items)->contents[i], Qt))
	    {
	      prefix
		= XVECTOR (menu_items)->contents[i + MENU_ITEMS_PANE_PREFIX];
	      i += MENU_ITEMS_PANE_LENGTH;
	    }
	  else
	    {
	      entry
		= XVECTOR (menu_items)->contents[i + MENU_ITEMS_ITEM_VALUE];
	      if (menu_item_selection == &XVECTOR (menu_items)->contents[i])
		{
		  if (keymaps != 0)
		    {
		      entry = Fcons (entry, Qnil);
		      if (!NILP (prefix))
			entry = Fcons (prefix, entry);
		    }
		  return entry;
		}
	      i += MENU_ITEMS_ITEM_LENGTH;
	    }
	}
    }
  
  return Qnil;
}
#endif

syms_of_win32menu ()
{
  Qdebug_on_next_call = intern ("debug-on-next-call");
  staticpro (&Qdebug_on_next_call);

  defsubr (&Sx_popup_menu);
  defsubr (&Sx_popup_dialog);
}
Tip: Filter by directory path e.g. /media app.js to search for public/media/app.js.
Tip: Use camelCasing e.g. ProjME to search for ProjectModifiedEvent.java.
Tip: Filter by extension type e.g. /repo .js to search for all .js files in the /repo directory.
Tip: Separate your search with spaces e.g. /ssh pom.xml to search for src/ssh/pom.xml.
Tip: Use ↑ and ↓ arrow keys to navigate and return to view the file.
Tip: You can also navigate files with Ctrl+j (next) and Ctrl+k (previous) and view the file with Ctrl+o.
Tip: You can also navigate files with Alt+j (next) and Alt+k (previous) and view the file with Alt+o.