| 1 | /* Title: -> c.win |
| 2 | * Purpose: central control of window sytem events. |
| 3 | * |
| 4 | */ |
| 5 | |
| 6 | /*----- Licensing note ----------------------------------------------------* |
| 7 | * |
| 8 | * This file is part of Straylight's Steel library. |
| 9 | * |
| 10 | * Steel is free software; you can redistribute it and/or modify |
| 11 | * it under the terms of the GNU General Public License as published by |
| 12 | * the Free Software Foundation; either version 2, or (at your option) |
| 13 | * any later version. |
| 14 | * |
| 15 | * Steel is distributed in the hope that it will be useful, |
| 16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 18 | * GNU General Public License for more details. |
| 19 | * |
| 20 | * You should have received a copy of the GNU General Public License |
| 21 | * along with Steel. If not, write to the Free Software Foundation, |
| 22 | * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 23 | */ |
| 24 | |
| 25 | #define BOOL int |
| 26 | #define TRUE 1 |
| 27 | #define FALSE 0 |
| 28 | #include <stdarg.h> |
| 29 | #include <stdlib.h> |
| 30 | #include <string.h> |
| 31 | #include <stdio.h> |
| 32 | |
| 33 | #include "trace.h" |
| 34 | #include "os.h" |
| 35 | #include "wimp.h" |
| 36 | #include "werr.h" |
| 37 | #include "wimpt.h" |
| 38 | #include "event.h" |
| 39 | #include "msgs.h" |
| 40 | #include "mem.h" |
| 41 | #include "bbc.h" |
| 42 | #include "swis.h" |
| 43 | #include "menu.h" |
| 44 | |
| 45 | #include "win.h" |
| 46 | |
| 47 | /* -------- Keeping Track of All Windows. -------- */ |
| 48 | |
| 49 | typedef struct win__str { |
| 50 | struct win__str *next; |
| 51 | struct win__str *prev; |
| 52 | wimp_w w; |
| 53 | win_event_handler proc; |
| 54 | void *handle; |
| 55 | void *menuh; |
| 56 | } win__str; |
| 57 | |
| 58 | #define DUD (-1) |
| 59 | |
| 60 | static win__str *win__allwindows; |
| 61 | |
| 62 | static win__str *win__find(wimp_w w) |
| 63 | { |
| 64 | win__str *ws=win__allwindows; |
| 65 | while (ws) |
| 66 | { |
| 67 | if (ws->w==w) |
| 68 | return (ws); |
| 69 | ws=ws->next; |
| 70 | } |
| 71 | return (0); |
| 72 | } |
| 73 | |
| 74 | static void win__register(wimp_w w, win_event_handler proc, void *handle) |
| 75 | { |
| 76 | BOOL new=FALSE; |
| 77 | win__str *ws=win__find(w); |
| 78 | if (ws==0) |
| 79 | { |
| 80 | new=TRUE; |
| 81 | if (ws=(win__str *)mem_alloc(sizeof(win__str)),ws==0) |
| 82 | { |
| 83 | werr |
| 84 | ( |
| 85 | FALSE, |
| 86 | msgs_lookup("winNEM:Not enough memory for new event handler.") |
| 87 | ); |
| 88 | return; |
| 89 | } |
| 90 | ws->next=win__allwindows; |
| 91 | ws->prev=0; |
| 92 | if (win__allwindows) |
| 93 | win__allwindows->prev=ws; |
| 94 | win__allwindows=ws; |
| 95 | ws->w=w; |
| 96 | } |
| 97 | ws->proc=proc; |
| 98 | ws->handle=handle; |
| 99 | if (new) |
| 100 | ws->menuh=0; |
| 101 | } |
| 102 | |
| 103 | static void win__discard(wimp_w w) |
| 104 | { |
| 105 | win__str *ws=win__find(w); |
| 106 | if (ws) |
| 107 | { |
| 108 | if (ws->menuh) |
| 109 | menu_attach(w,0,0,0,0); /* Try to free the menu */ |
| 110 | if (ws->prev) |
| 111 | ws->prev->next=ws->next; |
| 112 | else |
| 113 | win__allwindows=ws->next; |
| 114 | if (ws->next) |
| 115 | ws->next->prev=ws->prev; |
| 116 | mem_free(ws); |
| 117 | } |
| 118 | } |
| 119 | |
| 120 | BOOL win_read_eventhandler(wimp_w w,win_event_handler *p,void **handle) |
| 121 | { |
| 122 | win__str *ws=win__find(w); |
| 123 | if (ws) |
| 124 | { |
| 125 | *p=ws->proc; |
| 126 | *handle=ws->handle; |
| 127 | } |
| 128 | return (!!ws); |
| 129 | } |
| 130 | |
| 131 | /* -------- Claiming Events. -------- */ |
| 132 | |
| 133 | void win_register_event_handler( |
| 134 | wimp_w w, win_event_handler proc, void *handle) |
| 135 | { |
| 136 | if (proc == 0) { |
| 137 | win__discard(w); |
| 138 | } else { |
| 139 | win__register(w, proc, handle); |
| 140 | }; |
| 141 | } |
| 142 | |
| 143 | typedef struct unknown_previewer |
| 144 | { |
| 145 | struct unknown_previewer *link ; |
| 146 | win_unknown_event_processor proc ; |
| 147 | void *handle ; |
| 148 | } unknown_previewer ; |
| 149 | |
| 150 | typedef struct idle_receiver |
| 151 | { |
| 152 | struct idle_receiver *next; |
| 153 | win_idle_claimer proc; |
| 154 | int speed; |
| 155 | void *handle; |
| 156 | } |
| 157 | idle_receiver; |
| 158 | |
| 159 | static wimp_w win__idle = DUD; |
| 160 | #define win__unknown_flag (('U'<<24)+('N'<<16)+('K'<<8)+'N') |
| 161 | |
| 162 | static wimp_w win__unknown = DUD; |
| 163 | static unknown_previewer *win__unknown_previewer_list; |
| 164 | static idle_receiver *idleList; |
| 165 | static int win__minPoll=2; |
| 166 | |
| 167 | static void win__setPollingSpeed(void) |
| 168 | { |
| 169 | int s=win__minPoll; |
| 170 | idle_receiver *p=idleList; |
| 171 | while (p) |
| 172 | { |
| 173 | if (p->speed<s && p->speed!=win_DONTCARE) |
| 174 | s=p->speed; |
| 175 | p=p->next; |
| 176 | } |
| 177 | wimpt_pollingTime(s); |
| 178 | } |
| 179 | |
| 180 | void win_idleTime(int time) |
| 181 | { |
| 182 | win__minPoll=time; |
| 183 | win__setPollingSpeed(); |
| 184 | } |
| 185 | |
| 186 | void win_addIdleClaimer(win_idle_claimer proc,int speed,void *handle) |
| 187 | { |
| 188 | idle_receiver *new=(idle_receiver *)mem_alloc(sizeof(idle_receiver)); |
| 189 | if (new) |
| 190 | { |
| 191 | new->proc=proc; |
| 192 | new->handle=handle; |
| 193 | new->next=idleList; |
| 194 | new->speed=speed; |
| 195 | idleList=new; |
| 196 | } |
| 197 | win__setPollingSpeed(); |
| 198 | } |
| 199 | |
| 200 | BOOL win_any_idles(void) |
| 201 | { |
| 202 | return (!!idleList); |
| 203 | } |
| 204 | |
| 205 | void win_remove_idle_claimer(win_idle_claimer proc,void *handle) |
| 206 | { |
| 207 | idle_receiver *block ; |
| 208 | for (block = (idle_receiver *) &idleList ; |
| 209 | block->next != 0 && (block->next->proc != proc || block->next->handle != handle) ; |
| 210 | block = block->next) ; |
| 211 | if (block->next != 0) |
| 212 | { |
| 213 | idle_receiver *b2 = block->next ; |
| 214 | block->next = b2->next ; |
| 215 | mem_free(b2) ; |
| 216 | win__setPollingSpeed(); |
| 217 | } |
| 218 | } |
| 219 | |
| 220 | void win_claim_idle_events(wimp_w w) |
| 221 | { |
| 222 | tracef1("idle events -> %d\n",w) ; |
| 223 | win__idle = w; |
| 224 | } |
| 225 | |
| 226 | wimp_w win_idle_event_claimer(void) |
| 227 | { |
| 228 | return(win__idle); |
| 229 | } |
| 230 | |
| 231 | void win_claim_unknown_events(wimp_w w) |
| 232 | { |
| 233 | win__unknown = w; |
| 234 | } |
| 235 | |
| 236 | wimp_w win_unknown_event_claimer(void) |
| 237 | { |
| 238 | return win__unknown; |
| 239 | } |
| 240 | |
| 241 | void win_add_unknown_event_processor(win_unknown_event_processor p, |
| 242 | void *h) |
| 243 | { |
| 244 | unknown_previewer *block = mem_alloc(sizeof(unknown_previewer)) ; |
| 245 | if (block != 0) |
| 246 | { |
| 247 | block->link = win__unknown_previewer_list ; |
| 248 | block->proc = p ; |
| 249 | block->handle = h ; |
| 250 | win__unknown_previewer_list = block ; |
| 251 | } |
| 252 | } |
| 253 | |
| 254 | void win_remove_unknown_event_processor(win_unknown_event_processor p, |
| 255 | void *h) |
| 256 | { |
| 257 | unknown_previewer *block ; |
| 258 | for (block = (unknown_previewer *) &win__unknown_previewer_list ; |
| 259 | block != 0 && (block->link->proc != p || block->link->handle != h) ; |
| 260 | block = block->link) ; |
| 261 | if (block != 0) |
| 262 | { |
| 263 | unknown_previewer *b2 = block->link ; |
| 264 | block->link = b2->link ; |
| 265 | mem_free(b2) ; |
| 266 | } |
| 267 | } |
| 268 | |
| 269 | /* -------- Menus. -------- */ |
| 270 | |
| 271 | void win_setmenuh(wimp_w w, void *handle) |
| 272 | { |
| 273 | win__str *p = win__find(w); |
| 274 | if (p != 0) {p->menuh = handle;}; |
| 275 | } |
| 276 | |
| 277 | void *win_getmenuh(wimp_w w) /* 0 if not set */ |
| 278 | { |
| 279 | win__str *p = win__find(w); |
| 280 | return(p==0 ? 0 : p->menuh); |
| 281 | } |
| 282 | |
| 283 | /* -------- Processing Events. -------- */ |
| 284 | |
| 285 | /* |
| 286 | * void win_broadcast(wimp_eventstr *e) |
| 287 | * |
| 288 | * Use |
| 289 | * Broadcasts the given event to ALL windows currently active. Note: this |
| 290 | * works in a similar way to module service calls - a broadcast can be |
| 291 | * 'claimed' by changing it to a null event. This is most useful for |
| 292 | * informing other windows about events (such as a parent window being |
| 293 | * closed), and thus message broadcasts should be used. |
| 294 | * |
| 295 | * Parameters |
| 296 | * wimp_eventstr *e == the event to broadcast. |
| 297 | */ |
| 298 | |
| 299 | void win_broadcast(wimp_eventstr *e) |
| 300 | { |
| 301 | win__str *p=win__allwindows; |
| 302 | win__str *q; |
| 303 | while (p) |
| 304 | { |
| 305 | q=p; |
| 306 | p=p->next; |
| 307 | (q->proc)(e,q->handle); |
| 308 | } |
| 309 | } |
| 310 | |
| 311 | BOOL win_processevent(wimp_eventstr *e) |
| 312 | { |
| 313 | /* --- Houston, we have a problem --- * |
| 314 | * |
| 315 | * Event handlers can continue over several polls, unlike Sapphire where |
| 316 | * this sort of convolution is limited to coroutines. Our lists of |
| 317 | * handlers can become `stale' by the time the previous one finishes, |
| 318 | * if we're not careful. We bodge around the problem (bloody Acorn :-( ) |
| 319 | * by keeping a static serial number, and a local copy. If the two don't |
| 320 | * match, we declare `stale!' and refuse to process any more events. |
| 321 | */ |
| 322 | |
| 323 | |
| 324 | static int serial; |
| 325 | int cserial=++serial; |
| 326 | |
| 327 | wimp_w w; |
| 328 | win__str *p; |
| 329 | os_regset r; |
| 330 | wimp_wstate s; |
| 331 | tracef1("win_processevent %i.\n", e->e); |
| 332 | switch (e->e) { |
| 333 | case wimp_ENULL: |
| 334 | { |
| 335 | idle_receiver *idles=idleList; |
| 336 | idle_receiver *next; |
| 337 | while (idles && cserial==serial) /* Avoid staleness of lists */ |
| 338 | { |
| 339 | next=idles->next; |
| 340 | (idles->proc)(idles->handle); |
| 341 | idles=next; |
| 342 | } |
| 343 | } |
| 344 | w = win__idle; |
| 345 | break; |
| 346 | case wimp_EUSERDRAG: |
| 347 | w = win__unknown_flag ; |
| 348 | if (wimpt_getVersion()>=300) |
| 349 | os_swix(XDragASprite_Stop,&r); |
| 350 | break; |
| 351 | case wimp_EOPEN: |
| 352 | wimpt_noerr(wimp_get_wind_state(e->data.o.w,&s)); |
| 353 | if (wimpt_justChangedMode() || (s.flags & wimp_WCLICK_TOGGLE)) |
| 354 | win_adjustBox(&e->data.o); |
| 355 | /* And continue... */ |
| 356 | case wimp_EREDRAW: case wimp_ECLOSE: |
| 357 | case wimp_EPTRLEAVE: case wimp_EPTRENTER: case wimp_EKEY: |
| 358 | case wimp_ESCROLL: |
| 359 | w = e->data.o.w; |
| 360 | break; |
| 361 | case wimp_EBUT: |
| 362 | w = e->data.but.m.w; |
| 363 | if (w <= (wimp_w) -1) w = win_ICONBAR; |
| 364 | if (wimpt_options() & wimpt_ONOWIMPSHADE) |
| 365 | { |
| 366 | wimp_icon icn; |
| 367 | wimpt_noerr(wimp_get_icon_info(e->data.but.m.w,e->data.but.m.i,&icn)); |
| 368 | if ((icn.flags & 0x001f0000) == 0x001f0000) |
| 369 | e->data.but.m.i=-1; |
| 370 | } |
| 371 | break; |
| 372 | case wimp_ESEND: |
| 373 | case wimp_ESENDWANTACK: |
| 374 | switch (e->data.msg.hdr.action) { |
| 375 | case wimp_MCLOSEDOWN: |
| 376 | tracef0("closedown message\n"); |
| 377 | exit(0); |
| 378 | case wimp_MDATALOAD: |
| 379 | case wimp_MDATASAVE: |
| 380 | tracef1("data %s message arriving.\n", |
| 381 | (int) (e->data.msg.hdr.action==wimp_MDATASAVE ? "save" : "load")); |
| 382 | if (e->data.msg.data.dataload.w < 0) |
| 383 | { |
| 384 | tracef0("data message to the icon bar.\n"); |
| 385 | w = win_ICONBARLOAD ; |
| 386 | } else { |
| 387 | w = e->data.msg.data.dataload.w; |
| 388 | }; |
| 389 | break; |
| 390 | case wimp_MHELPREQUEST: |
| 391 | tracef1("help request for window %i.\n", e->data.msg.data.helprequest.m.w); |
| 392 | w = e->data.msg.data.helprequest.m.w; |
| 393 | if (w < 0) w = win_ICONBARLOAD; |
| 394 | break; |
| 395 | default: |
| 396 | tracef1("unknown message type %i arriving.\n", e->data.msg.hdr.action); |
| 397 | w = win__unknown_flag; |
| 398 | if (w < 0) w = win_ICONBARLOAD; |
| 399 | }; |
| 400 | break; |
| 401 | default: |
| 402 | w = win__unknown_flag; |
| 403 | }; |
| 404 | |
| 405 | if (w==win__unknown_flag || win__find(w) == 0) |
| 406 | { |
| 407 | unknown_previewer *pr=win__unknown_previewer_list; |
| 408 | unknown_previewer *next; |
| 409 | while (pr != 0 && cserial==serial) /* Avoid staleness of lists */ |
| 410 | { |
| 411 | next=pr->link; |
| 412 | if (pr->proc(e, pr->handle)) return TRUE ; |
| 413 | pr=next; |
| 414 | } |
| 415 | w = win__unknown ; |
| 416 | } |
| 417 | |
| 418 | p = (w == DUD ? 0 : win__find(w)); |
| 419 | if (p != 0) { |
| 420 | p->proc(e, p->handle); |
| 421 | return TRUE; |
| 422 | } else { |
| 423 | return FALSE; |
| 424 | }; |
| 425 | } |
| 426 | |
| 427 | /* -------- Termination. -------- */ |
| 428 | |
| 429 | static int win__active; |
| 430 | |
| 431 | void win_activeinc(void) |
| 432 | { |
| 433 | win__active++; |
| 434 | } |
| 435 | |
| 436 | void win_activedec(void) |
| 437 | { |
| 438 | win__active--; |
| 439 | } |
| 440 | |
| 441 | int win_activeno(void) |
| 442 | { |
| 443 | return win__active; |
| 444 | } |
| 445 | |
| 446 | /* -------- Giving away the caret. -------- */ |
| 447 | |
| 448 | void win_give_away_caret(void) |
| 449 | { |
| 450 | win__str *ws=win__allwindows; |
| 451 | while (ws) { |
| 452 | if (ws->w != DUD) { /* found a window */ |
| 453 | wimp_wstate s; |
| 454 | wimp_eventstr e; |
| 455 | tracef1("get state of window %i.", ws->w); |
| 456 | (void) wimp_get_wind_state(ws->w, &s); |
| 457 | tracef2("behind=%i flags=%i.\n", s.o.behind, s.flags); |
| 458 | if (s.o.behind == DUD && (s.flags & wimp_WOPEN) != 0) { |
| 459 | /* w is the top window */ |
| 460 | /* if it wants the caret, it will grab it. */ |
| 461 | tracef0("Opening it.\n"); |
| 462 | e.e = wimp_EOPEN; |
| 463 | e.data.o = s.o; |
| 464 | wimpt_fake_event(&e); |
| 465 | break; |
| 466 | }; |
| 467 | }; |
| 468 | ws=ws->next; |
| 469 | }; |
| 470 | } |
| 471 | |
| 472 | /* ----------- setting a window title ------------ */ |
| 473 | |
| 474 | void win_settitle(wimp_w w, char *newtitle,...) |
| 475 | { |
| 476 | wimp_redrawstr r; |
| 477 | va_list ap; |
| 478 | wimp_winfo *winfo; |
| 479 | |
| 480 | va_start(ap,newtitle); |
| 481 | if((winfo = mem_alloc(sizeof(wimp_wind) + 200*sizeof(wimp_icon))) == 0) |
| 482 | { |
| 483 | werr(FALSE, msgs_lookup("win2:Not enough memory to change window title.")); |
| 484 | va_end(ap); |
| 485 | return; |
| 486 | } |
| 487 | |
| 488 | tracef1("New title is %s\n", (int)newtitle); |
| 489 | /* --- get the window's details --- */ |
| 490 | winfo->w = w; |
| 491 | wimpt_noerr(wimp_get_wind_info(winfo)); |
| 492 | |
| 493 | /* --- put the new title string in the title icon's buffer --- */ |
| 494 | tracef1("Lib buffer is at %d\n", (int)winfo->info.title.indirecttext.buffer); |
| 495 | vsprintf(winfo->info.title.indirecttext.buffer, newtitle, ap); |
| 496 | va_end(ap); |
| 497 | |
| 498 | /* --- invalidate the title bar in absolute coords --- */ |
| 499 | if (winfo->info.flags & wimp_WOPEN) |
| 500 | { |
| 501 | r.w = (wimp_w) -1; /* absolute screen coords */ |
| 502 | r.box = winfo->info.box; |
| 503 | r.box.y1 += 36; /* yuk - tweaky */ |
| 504 | r.box.y0 = r.box.y1 - 36; |
| 505 | wimpt_noerr(wimp_force_redraw(&r)); |
| 506 | } |
| 507 | |
| 508 | /* --- free space used to window info --- */ |
| 509 | mem_free(winfo); |
| 510 | } |
| 511 | |
| 512 | /* |
| 513 | * void win_gadgetWidths(wimp_wflags f,wimp_box *b) |
| 514 | * |
| 515 | * Use |
| 516 | * Returns a box giving the width of the system area around a window with |
| 517 | * window flags f. |
| 518 | */ |
| 519 | |
| 520 | void win_gadgetWidths(wimp_wflags f,wimp_box *b) |
| 521 | { |
| 522 | wimp_wind w= |
| 523 | { |
| 524 | {-500,-500,-300,-300},0,0,-1, |
| 525 | 0, |
| 526 | {7,2,7,1,3,1,12}, |
| 527 | {0,0,100,100}, |
| 528 | 0, |
| 529 | 0, |
| 530 | (void *)1, |
| 531 | 0, |
| 532 | {"anywindow"}, |
| 533 | 0 |
| 534 | }; |
| 535 | wimp_w temp; |
| 536 | wimp_wstate s; |
| 537 | wimp_redrawstr r; |
| 538 | |
| 539 | w.flags=f | wimp_WTRESPASS; |
| 540 | if (wimp_create_wind(&w,&temp)) |
| 541 | { |
| 542 | b->x0=0; |
| 543 | b->x1=(f & wimp_WHSCR) ? 40 : 0; |
| 544 | b->y0=(f & wimp_WVSCR) ? 40 : 0; |
| 545 | b->y1=(f & wimp_WTITLE) ? 40 : 0; |
| 546 | } |
| 547 | else |
| 548 | { |
| 549 | wimpt_noerr(wimp_get_wind_state(temp,&s)); |
| 550 | wimpt_noerr(wimp_open_wind(&s.o)); |
| 551 | wimpt_noerr(wimp_get_wind_state(temp,&s)); |
| 552 | r.w=temp; |
| 553 | wimpt_noerr(wimp_getwindowoutline(&r)); |
| 554 | b->x0=s.o.box.x0-r.box.x0; |
| 555 | b->x1=r.box.x1-s.o.box.x1; |
| 556 | b->y1=r.box.y1-s.o.box.y1; |
| 557 | b->y0=s.o.box.y0-r.box.y0; |
| 558 | wimpt_noerr(wimp_delete_wind(temp)); |
| 559 | } |
| 560 | } |
| 561 | |
| 562 | /* |
| 563 | * void win_adjustBox(wimp_openstr *o) |
| 564 | * |
| 565 | * Use |
| 566 | * Adjusts a window so that it fits on the screen. |
| 567 | * |
| 568 | * Parameters |
| 569 | * wimp_openstr *o == pointer to the block to fiddle |
| 570 | */ |
| 571 | |
| 572 | void win_adjustBox(wimp_openstr *o) |
| 573 | { |
| 574 | int scx=wimpt_scwidth(); |
| 575 | int scy=wimpt_scheight(); |
| 576 | int w=o->box.x1-o->box.x0; |
| 577 | int h=o->box.y1-o->box.y0; |
| 578 | wimp_box b; |
| 579 | wimp_wstate s; |
| 580 | wimpt_noerr(wimp_get_wind_state(o->w,&s)); |
| 581 | win_gadgetWidths(s.flags,&b); |
| 582 | |
| 583 | if (o->box.x1-o->box.x0>scx-b.x0-b.x1) |
| 584 | { |
| 585 | o->box.x0=b.x0; |
| 586 | o->box.x1=scx-b.x1; |
| 587 | } |
| 588 | else if (o->box.x1>scx-b.x1) |
| 589 | { |
| 590 | o->box.x1=scx-b.x1; |
| 591 | o->box.x0=scx-b.x1-w; |
| 592 | } |
| 593 | else if (o->box.x0<b.x0) |
| 594 | { |
| 595 | o->box.x0=b.x0; |
| 596 | o->box.x1=b.x0+w; |
| 597 | } |
| 598 | |
| 599 | if (o->box.y1-o->box.y0>scy-b.y0-b.y1) |
| 600 | { |
| 601 | o->box.y0=b.y0; |
| 602 | o->box.y1=scy-b.y1; |
| 603 | } |
| 604 | else if (o->box.y1>scy-b.y1) |
| 605 | { |
| 606 | o->box.y1=scy-b.y1; |
| 607 | o->box.y0=scy-b.y1-h; |
| 608 | } |
| 609 | else if (o->box.y0<b.y0) |
| 610 | { |
| 611 | o->box.y0=b.y0; |
| 612 | o->box.y1=b.y0+h; |
| 613 | } |
| 614 | } |
| 615 | |
| 616 | /* |
| 617 | * BOOL win_anyWindows(void) |
| 618 | * |
| 619 | * Use |
| 620 | * Informs the caller if there are any windows left. |
| 621 | * |
| 622 | * Returns |
| 623 | * TRUE if there are. |
| 624 | */ |
| 625 | |
| 626 | BOOL win_anyWindows(void) |
| 627 | { |
| 628 | wimp_wind w= |
| 629 | { |
| 630 | {0,0,10,10},0,0,-1, |
| 631 | 0, |
| 632 | {7,2,7,1,3,1,12}, |
| 633 | {0,0,10,10}, |
| 634 | 0, |
| 635 | 0, |
| 636 | (void *)1, |
| 637 | 0, |
| 638 | {"anywindow"}, |
| 639 | 0 |
| 640 | }; |
| 641 | os_error *err; |
| 642 | wimp_w handle; |
| 643 | err=wimp_create_wind(&w,&handle); |
| 644 | if (err) |
| 645 | return (FALSE); |
| 646 | else |
| 647 | { |
| 648 | wimp_delete_wind(handle); |
| 649 | return (TRUE); |
| 650 | } |
| 651 | } |
| 652 | |
| 653 | /* end */ |