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[smlnj] Annotation of /sml/trunk/src/eXene/CHANGES
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Annotation of /sml/trunk/src/eXene/CHANGES

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Revision 1911 - (view) (download)

1 : mblume 1911 eXene-2.0a
2 :     ------------------------
3 :    
4 :     GRAPHICS UTILITIES
5 :     - modifications to xauth.sml to unpack IP addresses from Xauth file
6 :     to strings for comparison; if "localhost" is specified as the
7 :     host to connect to, search Xauth file by the actual hostname.
8 :     [Feb 2005]
9 :    
10 :     LIBRARY CHANGES
11 :     - modified createSimpleTopWin to return channel on which X window
12 :     managers may notify the window of deletion events:
13 :     val createSimpleTopWin : Display.screen -> {
14 :     geom : Geometry.win_geom,
15 :     border : ColorServer.color,
16 :     backgrnd : ColorServer.color
17 :     } -> (window * WindowEnv.in_env * WindowEnv.client_msg CML.chan)
18 :     [Jan 2005]
19 :    
20 :     - added ICCC.xrdbOfScr, whereby an application may retrieve the strings
21 :     stored in the RESOURCE_MANAGER property of the root window by xrdb.
22 :     val xrdbOfScr : EXB.screen -> string list
23 :     [May 2004]
24 :    
25 :     WIDGET CHANGES
26 :     - routers in composite widgets now have buffered output channels;
27 :     this is an attempt at deadlock avoidance. (More to come on this...)
28 :     [Nov 2004]
29 :    
30 :     - added the following to Widget Root, which widgets can use to obtain
31 :     resource specifications from xrdb, merge resource styles, and parse
32 :     command line arguments more easily.
33 :    
34 :     Insert all of the resource specifications of the first style into
35 :     the second style, effectively giving priority to the specifications
36 :     of the first style.
37 :     val mergeStyles : style * style -> style
38 :    
39 :     Create a style from the stings stored by xrdb in the RESOURCE_MANAGER
40 :     property of the root window.
41 :     val styleFromXRDB : root -> style
42 :    
43 :     The following provide support for command line argument "parsing":
44 :     datatype optName
45 :     = OPT_NAMED of string (* custom options: retrieve by name *)
46 :     | OPT_RESSPEC of string (* resource options: convert to a style *)
47 :     type argName = string (* option spec string in argv *)
48 :     datatype optKind
49 :     = OPT_NOARG of string (* as XrmoptionNoArg. optname will assume this
50 :     value if argName is specified in argv *)
51 :     | OPT_ISARG (* as XrmoptionIsArg: value is option string itself *)
52 :     | OPT_STICKYARG (* as XrmoptionStickyArg: value is chars immediately
53 :     following option *)
54 :     | OPT_SEPARG (* as XrmoptionSepArg: value is next argument in argv *)
55 :     | OPT_RESARG (* as XrmoptionResArg: resource and value in next
56 :     argument in argv *)
57 :     | OPT_SKIPARG (* as XrmSkipArg: ignore this option and next
58 :     argument in argv *)
59 :     | OPT_SKIPLINE (* as XrmSkipLine: ignore this option and the
60 :     rest of argv *)
61 :     datatype optVal
62 :     = OPT_ATTRVAL of (string * AV.attr_type)
63 :     | OPT_STRING of string
64 :     (* option specification table: name for searching, name in argv,
65 :     kind of option, and type of option *)
66 :     type optSpec = (optName * argName * optKind * AV.attr_type) list
67 :     type optDb
68 :     type attr_value
69 :     val parseCommand : optSpec -> string list -> optDb * string list
70 :     val findNamedOpt : optDb -> optName -> root -> attr_value list
71 :     val findNamedOptStrings : optDb -> optName -> string list
72 :     val styleFromOptDb : root * optDb -> style
73 :    
74 :     [May 2004]
75 :    
76 : jhr 704 eXene-1.0
77 : monnier 2 ------------------------
78 :    
79 :     GLOBAL CHANGES
80 : mblume 1368 - accounted for changed type of inputLine (now returns an option)
81 :     [2003-09-12]
82 :    
83 : mblume 1354 - added a dummy implementation of UnixSock to kick when a native
84 :     implementation is unavailable (on non-Unix systems);
85 :     replaced reference to Posix.ProcEnv by reference to generic OS.Process;
86 :     eXene now compiles under Win32
87 :     [2003-09-09]
88 :    
89 : mblume 1350 - fixed code that broke because of Basis API changes (slices)
90 :     [2003-09-03]
91 :    
92 : jhr 1188 - compiles again under 110.33+ (library name is $/eXene.cm)
93 :     [2001-06-20]
94 :    
95 : monnier 2 - changed uses of System.Unsafe.
96 :     [07/11/97]
97 :    
98 :     - various minor changes to track basis clean-up in SML/NJ.
99 :     [06/11/97]
100 :    
101 :     - various minor changes to conform with SML'97 type sharing rules.
102 :     [05/22/97]
103 :    
104 :     - various minor changes to use Real.== instead of polymorphic equality
105 :     (which doesn't work anymore).
106 :     [12/10/96]
107 :    
108 :     - modified sources to compile against SML'96 and the latest version of CML.
109 :     [08/01/96]
110 :    
111 :     STYLES
112 : jhr 704 - fixed bug in parsing code (space between resource name and ":" was not
113 :     accepted.
114 :     [06/14/99]
115 :    
116 : monnier 2 - fixed bug in parsing code.
117 :     [04/07/97]
118 :    
119 :     GRAPHICS UTILITIES
120 : monnier 29 - created the GetDpy structure to provide support for getting the
121 :     display and authentication information for an application. This
122 :     code was taken from the RunEXene structure in the widget utilities.
123 :     [01/27/98]
124 :    
125 : monnier 2 - fixed alignment bug in X authorization code.
126 :     [04/07/97]
127 :    
128 :     LIBRARY CHANGES
129 : jhr 1188 - Fixed bug in XTime.toReal; it did not handle large time values.
130 :     [2001-10-24]
131 :    
132 : jhr 704 - Added code to make the leycode to keysym translation bulletproof (some
133 :     X servers seem to generate bogus keycodes in some situations).
134 :     [09/14/99]
135 :    
136 :     - Fixed some bugs in the implementation of selections and modified the
137 :     interface to support interaction with applications that use CurrentTime
138 :     in their selection requests (this goes against the ICCC spec).
139 :     [07/12/99]
140 :    
141 : monnier 289 - Fixed bug in ICCC signature, where the wrong type name was being used
142 :     for windows in some places.
143 :     [05/19/99]
144 :    
145 : monnier 2 - Fixed a bug introduced in SML/NJ 109.30, where the open connection
146 :     request had bogus data in it.
147 :     [08/11/97]
148 :    
149 :     - Fixed a bug in the encoding of PolyText8 requests.
150 :     [04/08/97]
151 :    
152 :     - One can now use symbolic host names when connecting to servers.
153 :     [08/01/96]
154 :    
155 :     WIDGET CHANGES
156 : jhr 1188 - New Scrollbar implementation from Allen Stoughton that fixes various
157 :     problems.
158 :     [2002-03-12]
159 :    
160 : monnier 139 - Removed old-style imperative type variables from signatures in 2D structured
161 :     graphics library.
162 :     [07/15/98]
163 :    
164 :     - Added 2D structured graphics canvas widget (widgets/fancy/2d-graphics).
165 : monnier 106 [05/22/98]
166 :    
167 : monnier 2 - Added RunEXene.parseDisplay.
168 :     [04/07/97]
169 :    
170 :     - RunEXene.run and RunEXene.runWArgs now look for the DISPLAY shell variable
171 :     instead of EXENE_DISPLAY.
172 :     [08/01/96]
173 :    
174 :    
175 : jhr 704 eXene-0.5
176 : monnier 2 ------------------------
177 :    
178 :     GLOBAL CHANGES
179 :     - modified sources to use the Char and String interfaces from the
180 :     new standard basis.
181 :     [11/15/94]
182 :    
183 :     LIBRARY CHANGES
184 :     - added partial fix to handle sequence numbers > 2^16; still need to synchronize
185 :     with server when # of requests greatly exceeds replies.
186 :     [02/01/95]
187 :    
188 :     - add clause to catch Fail exceptions in the wrapper code for XDebug.xspawn.
189 :     [12/06/94]
190 :    
191 :     - added charWidth to the Font structure, and cleaned up the various
192 :     width computing functions in lib/window/font-base.sml.
193 :     [11/26/94]
194 :    
195 :     - added withdrawWin to eXeneWin for ICCC-compliant unmapping of top-level
196 :     windows.
197 :     [11/09/94]
198 :    
199 :     - added rgbOfColor to eXeneBase for extracting the RGB of a color so that
200 :     the shading colors (for 3D) can be computed.
201 :     [09/21/94]
202 :    
203 :     - fixed a bug in protocol/xdisplay.sml, where the connection file descriptor
204 :     was not being closed when the server refuses the connection.
205 :     [08/26/94]
206 :    
207 :     - added the authentication datatype to EXeneBase and added an authentication
208 :     parameter to the openDisplay operation.
209 :     [06/08/94]
210 :    
211 :     - added position and time information to MOUSE_Enter and MOUSE_Leave
212 :     events. We may want to make mouse events carry more uniform information.
213 :     [06/03/94]
214 :    
215 :     - made a bunch of changes to better support properties. Renamed the type
216 :     XProtTypes.property to prop_val, and removed the name field. Added
217 :     a property server to monitor property changes.
218 :     [03/29/94]
219 :    
220 :     - added maxReqLen to allow applications to find out the maximum
221 :     request length supported by a display.
222 :     [03/29/94]
223 :    
224 :     - renamed Drawing.tileBlt to Drawing.textureBlt, and added a new function,
225 :     called tileBlt, which does a pixelBlt using the tile as a source.
226 :     [03/18/94]
227 :    
228 :     - created a per display connection server for managing communications
229 :     related to selections. This also required a couple of minor changes
230 :     to the protocol implementation.
231 :     [03/11/94]
232 :    
233 :     - created a per display connection atom table, for caching interned atoms.
234 :     The standard atom definitions moved from xatom.sml to std-atoms.sml.
235 :     [10/26/93]
236 :    
237 :     - fixed bug in Geometry.clipPt.
238 :     [07/12/93]
239 :    
240 :     - fixed bug in XDebug.xspawn that caused the trace-server's ID to be reported
241 :     instead of the spawned thread.
242 :     [04/12/93]
243 :    
244 :     - modified XDebug.xspawn to report thread exiting on the xspawn trace module,
245 :     and to unwatch normally exiting threads. Also, turn on the XDebug.errorTM
246 :     trace module.
247 :     [03/28/93]
248 :    
249 :     - added Font.substrWidth for computing the width of a substring.
250 :     [03/27/93]
251 :    
252 :     - added general function to change window attributes (EXeneWin.changeAttrs)
253 :     [03/26/93]
254 :    
255 :     - added EXeneWin.setBackground
256 :     [03/25/93]
257 :    
258 :     GRAPHICS UTILITIES
259 :     - added XAuth structure to provide support for getting authentication
260 :     data needed when opening a display.
261 :     [06/08/94]
262 :    
263 :     - added BitmapIO functor that supports reading and writing depth-1 images
264 :     in the X11 format.
265 :     [02/18/93]
266 :    
267 :     WIDGET CHANGES
268 :     - added openFont to the Widget structure.
269 :     [11/27/94]
270 :    
271 :     - created the EXeneRun utility structure for a higher-level way to invoke
272 :     eXene applications.
273 :     [07/16/94]
274 :    
275 :     - added an authentication parameter to the mkRoot operation.
276 :     [06/08/94]
277 :    
278 :     - added setCursor and setBackground to Canvas structure to allow those window
279 :     attributes of a canvas to be changed.
280 :     [03/28/94]
281 :    
282 :     - fixed a race condition in the canvas widget.
283 :     [04/12/93]
284 :    
285 :     - modified box_item datatype declaration in BoxLayout to allow use of
286 :     newconreps.
287 :     [03/28/93]
288 :    
289 :     - modified Background widget to use EXeneWin.setBackground.
290 :     [03/26/93]
291 :    
292 :     - added colorOf function to Widget structure; shorthand for
293 :     colorOfScr (screenOf root) colorspec (widget.sml).
294 :     [02/19/93]
295 :    
296 :     - changed default scrollbar cursor color to gray; correctly handles
297 :     monochrome displays (scrollbar.sml, scroll-view.sml).
298 :     [02/19/93]
299 :    
300 :    
301 :     eXene-0.4 (released 02/17/93)
302 :     -----------------------------
303 :    
304 :     GLOBAL CHANGES
305 :     - changed type naming convention to remove "_t" suffix.
306 :     [02/09/93]
307 :    
308 :     - modified source to use SML/NJ Library (v. 0.1). A couple of the interfaces
309 :     are different from the util-lib versions.
310 :     [02/03/93]
311 :    
312 :     LIBRARY CHANGES
313 :     - modified XDebug structure to use the trace modules provided by TraceCML.
314 :     Also modified various clients of XDebug.
315 :     [02/10/93]
316 :    
317 :     - exposed WindowNotFound exception in EXeneBase.
318 :     [02/10/93]
319 :    
320 :     - changed lib-level hashing functions to use SML/NJ Library hash tables.
321 :     [02/09/93]
322 :    
323 :     - added encodeSendEvent to XRequest, and send_evt_to_t type to XProtTypes.
324 :     Created the XSendEvent structure, which contains routines for encoding
325 :     SendEvent requests (currently only encodeSendSelectionNotify).
326 :     [11/20/92]
327 :    
328 :     - modified lib/protocol/xdisplay.sml to retry connection upto 5 times.
329 :     [11/17/92]
330 :    
331 :     - open EXene structure using explicit structure assignments, so as not to
332 :     confuse source groups.
333 :    
334 :     - Always create GC server for depth 1 pixmaps (patch for IBM X bug) (display.sml)
335 :    
336 :     - Fixed parity error in internAtom and lookupAtom (xatoms.sml)
337 :    
338 :     - Added black and white color_spec_t to EXeneBase (abstract.sml,exene-base.sml)
339 :     - Added createImageFromTile function to EXeneBase (exene-base.sml,image.sml)
340 :    
341 :     - Removed alloc-type window creation routines (window.sml,exene-win.sml)
342 :    
343 :     - Added function createTransientWin (window.sml,exene-win.sml,xprops.sml)
344 :    
345 :     - Added function setWMProtocols (window.sml,exene-win.sml,xprops.sml)
346 :    
347 :     (2 November 1992)
348 :    
349 :     - split lib/window/window.sml into window-sig.sml and window.sml.
350 :    
351 :     - added background and border color fields to representation of windows.
352 :     This is necessary to avoid premature deallocation of those color
353 :     cells, once color finalization is implemented.
354 :    
355 :     - changed "Drawing.autoflush" to "Drawing.feedback"
356 :    
357 :     - Implemented a new, more abstract, color model. Each screen has a color
358 :     server that maps abstract color specifications (color_spec_t) to
359 :     an abstract representation of colors (color_t). The pixel type is no
360 :     longer visible to the user level.
361 :    
362 :     - Added number of buffered messages count to mapped state of draw-master.
363 :    
364 :     - Added Font.charPositions to return per character positions of a string.
365 :    
366 :     - Fixed race condition by adding buffering to the top-level
367 :     window server.
368 :    
369 :     - XDisplay structure now contains a field for the X server's
370 :     maximum request size.
371 :    
372 :     - Image can now be more than 1 plane deep, using XY format.
373 :     Images and their ascii representations now require a list of
374 :     lists instead of a list.
375 :     bm2mlx-template.c modified to reflect the new format.
376 :    
377 :     - Function createImageFromPixmap added.
378 :    
379 :     - Bounding box function bbox added to Geometry.
380 :    
381 :     - Bugs in intersection and union in Geometry fixed.
382 :    
383 :     - Race condition between drawing on a pixmap and destroying the
384 :     pixmap eliminated.
385 :    
386 :     - Bug in createTileFromPixmap fixed.
387 :    
388 :     - MOUSE_Enter/MOUSE_Leave events now generated.
389 :    
390 :     - FirstDown & LastUp messages added to mouse_msg_t.
391 :    
392 :     - fixed bug in HashUtil.remove
393 :    
394 :     - added checks to guarantee that values constructed using concrete
395 :     datatypes lie in allowed ranges for the X protocol. Added related
396 :     exceptions BadRGB, BadDrawParameter, BadPenParameter, BadWindowGeometry
397 :     and BadPixmapParameter.
398 :    
399 :     - NoColorCell exception added to EXeneBase (and Color), for attempts to
400 :     allocate a new color cell when the color map is full.
401 :    
402 :     - Immutable tiles are now used where pixmaps used to be allowed.
403 :    
404 :     GRAPHICS UTILITIES
405 :     - Added routine for generating general ellipses.
406 :     [10/05/92]
407 :    
408 :     - Fixed bug in spline code concerning when line is flat enough.
409 :     [10/03/92]
410 :    
411 :     - Spline code has been moved into the graphics utility directory
412 :     (lib/graph_util).
413 :     [10/03/92]
414 :    
415 :     - Added routines for drawing/filling rounded rectangles.
416 :     [09/03/92]
417 :    
418 :     WIDGET CHANGES
419 :     - The BadArgument exceptions in Box, Pile and WidgetSet are
420 :     changed to BadIndex (box.sml, pile.sml, widget-set.sml).
421 :     [02/12/93]
422 :    
423 :     - The AlreadyRealized exception from Widget is now exposed (widget.sml).
424 :     [02/12/93]
425 :    
426 :     - The getChildEnv function in Router now raises a NotFound
427 :     exception if the environment is not in the table (router.sml).
428 :     [02/12/93]
429 :    
430 :     - A shell widget now deletes its own window and becomes a zombie
431 :     when it receives a KillReq from its child (shell.sml).
432 :     [02/12/93]
433 :    
434 :     - The bounds function for str_edit is more correctly and efficiently
435 :     handled. It is also no flexible in the x dimension (str-edit.sml).
436 :     [02/12/93]
437 :    
438 :     - Unnecessary case "013" removed from echo server (vtty.sml)
439 :     [02/12/93]
440 :    
441 :     - Field name "rad" changed to "radius" in mkToggleCircle (toggle.sml)
442 :     [02/12/93]
443 :    
444 :     - Many widget exceptions replaced by LibBase.BadArg (slider.sml,
445 :     scrollbar.sml, divider.sml, button-view.sml, str-edit.sml,
446 :     widget.sml, frame.sml, viewport-sig.sml, viewport.sml
447 :     [02/12/93]
448 :    
449 :     - Exceptions BadWidth and MultipleChoices exposed in text-list.sml
450 :     [02/11/93]
451 :    
452 :     - Unused exception BadWidth removed from color-rect.sml
453 :     [02/11/93]
454 :    
455 :     - setWMHints function added to Shell
456 :    
457 :     - type generators added for types defined by type abbreviation:
458 :     wm_args_t, hints_t (shell.sml), bounds_t (widget.sml),
459 :     list_item_t (text-list.sml), set_item_t (widget-set.sml),
460 :     whereFn_t (simple-menu.sml)
461 :    
462 :     - Added code to prevent possible deadlock dealing with child CO
463 :     events (widget.sml, shell.sml, box.sml, shape.sml, field-edit.sml)
464 :    
465 :     (11 November 1992)
466 :    
467 :     - Fixed bugs in vtty.sml, toggle-ctrl.sml
468 :    
469 :     (10 November 1992)
470 :    
471 :     - Added WidgetSet structure (widget-set.sml); new version of
472 :     TextList using WidgetSet
473 :    
474 :     (5 November 1992)
475 :     - The widget library assumes util-lib library loaded
476 :    
477 :     - Added mkTransientShell and removed setWMHints from Shell
478 :    
479 :     - Added wstate_t type to Widget; replaces button_state_t
480 :    
481 :     - Added sameRoot function to Widget
482 :    
483 :     - Made widgets abstract, with equality function.
484 :    
485 :     - Removed window attributes for widgets. The wrapCreate function
486 :     was changed accordingly. Also, removed setBackground function
487 :     from Widget; use new background widget instead
488 :    
489 :     - Added several utility functions to Widget: okaySize, compatibleDim,
490 :     compatibleSize
491 :    
492 :     - Added ignoreMouse, ignoreKey functions for widgets
493 :    
494 :     - Toggles now take an initial state; in addition, a toggle now
495 :     fires its action routine if its state is changed under program control
496 :    
497 :     - Sliders now take an initial state; in addition, there are now functions for
498 :     setting the state, plus querying the state and scale
499 :    
500 :     - The function mkSBLayout has been moved to its own structure ScrollLayout
501 :    
502 :     - TextList replaces the ListWidget structure. The user can now
503 :     specify an initial state for the items.
504 :    
505 :     - mkColorRect has been added to implement simple colored rectangular regions.
506 :    
507 :     - A background_t widget has been added to implement backgrounds for widgets
508 :    
509 :     - Where possible, composite widgets no longer need a root
510 :     argument (structures Frame, ScrollPort, Shape)
511 :    
512 :     - The Box structure now produces a box_layout_t, rather than a widget_t.
513 :     (There is the usual widgetOf function.) In addition, one can now
514 :     insert, delete, map, and unmap "boxes" in the top level of the box
515 :     hierarchy
516 :    
517 :     - A Pile structure has been added. This implements a pile_t type, which
518 :     maintains a collection of widgets, only one of which is visible at
519 :     a time. Widgets can be inserted and deleted from piles.
520 :    
521 :     (2 November 1992)
522 :    
523 :     - modified str-edit.sml to allow character values in the range
524 :     [0xa0-0xff].
525 :    
526 :     - Color type introduced to allow multiple representations; currently
527 :     supports RGB and pixel. [NOTE: this has been moved to the library
528 :     level]
529 :    
530 :     - New widgets : Divider, MenuButton, ViewPort, ScrollPort
531 :    
532 :     - Label views, text button views and list items
533 :     reimplemented to use common text glyph.
534 :    
535 :     - Frames provide dynamic control of frame color.
536 :    
537 :     - Labels provide a font option, and dynamic control of colors.
538 :    
539 :     - Bugs fixed in scrollbar widges.
540 :    
541 :     - Signature of Shape module changed, and two new functions mkRigid
542 :     and mkFlex added.
543 :    
544 :     - Character insertion and deletion added to TextWidget
545 :    
546 :     - The Widget module now provides filter functions for the input streams,
547 :     and a function to alter the background of a widget.
548 :    
549 :     - Toggle and button protocol has changed. Command and toggle buttons
550 :     register a change on button up, not on button down. If button up
551 :     occurs off the widget, no change is registered. Event streams for
552 :     general buttons now terminate with either button up or exit, the latter
553 :     indicating the mouse has left the widget. Buttons and toggles also now
554 :     provide active/inactive state.
555 :    
556 :    
557 :     eXene-0.3 (released 12/03/91)
558 :     -----------------------------
559 :    
560 :     GLOBAL CHANGES:
561 :     - eXene is now based on CML-0.9.4; this very required minor changes to
562 :     eXene (now using 0.9.6).
563 :    
564 :     - ported to SML/NJ 0.71. Most changes were a result of the Array structure
565 :     not being open by default, and by Array.sub no longer being an infix operator.
566 :     Changed the representation of pen_t values to use immutable vectors.
567 :    
568 :     LIBRARY CHANGES
569 :     - fixed typechecking problem in protocol/xdisplay.sml that was exposed
570 :     by SML/NJ 0.70.
571 :    
572 :     - replaced draw_dst_t datatype with abstract drawable_t type. This is
573 :     part of the support for rubber-banding.
574 :    
575 :     - fixed xio.sml bug caused by a faulty understanding of the sequencing
576 :     semantics of the protocol.
577 :    
578 :     - fixed bugs in gc-server.sml and draw-master.sml reported by Huimin Lin
579 :     (huimin@@cogs.susx.ac.uk).
580 :    
581 :     - fixed bug in HashUtil.mapList
582 :    
583 :     - changed remove function for hash tables to return the removed item. This
584 :     affected the hash tables defined in util/{hash-util.sml,hash-xid.sml},
585 :     window/hash-window.sml and user/eXene-base.sml.
586 :    
587 :     - added window-tree locking mechanism to the window registry.
588 :    
589 :     - modified asynchronous blt operations to use a promise-style implementation.
590 :    
591 :     - added updatePen operation for functional updates of pens.
592 :    
593 :     - added createOverlay to support rubber-banding.
594 :    
595 :     - new Spline module providing functions to compute Bezier cubic sections,
596 :     and open and closed B-splines.
597 :    
598 :     - added copyBlt and copyBltEvt.
599 :    
600 :     - fixed bug in decoding font info in xreply.sml (wrong offset)
601 :    
602 :     WIDGET CHANGES
603 :     - fixed possible deadlock arising from parent not always servicing a child's
604 :     CO event. This affected box.sml and field-edit.sml.
605 :    
606 :     - added new text list widget. The widget provides a vertical or horizontal
607 :     display of text items, and events associated with the user choosing items.
608 :    
609 :     - the ButtonView structure now provides a new view mkTextBtn, which
610 :     generalizes mkLabelBtn (rectangular buttons with string labels) by
611 :     allowing the programmer to specify the border width and text alignment
612 :     within the button.
613 :    
614 :     - fixed bug in Frame widget that was causing deadlock.
615 :    
616 :     - the SimpleMenu module has seen various bug fixes and style
617 :     changes, as well as the addition of a low-level menu routine
618 :     for providing pop-up menus within widgets.
619 :    
620 :     - there is now a working vtty widget (thanks to Thomas Yan for finishing
621 :     our code)
622 :    
623 :     - the Canvas widget now provides a drawable, so that the library drawing
624 :     routines can be used.
625 :    
626 :    
627 :     eXene-0.2 (released 4/27/91)
628 :     -----------------------------
629 :    
630 :     LIBRARY CHANGES
631 :     - added absolute screen coordinates to mouse event messages
632 :    
633 :     - added tileBlt operation to Drawing
634 :    
635 :     - fixed GraphicsExpose/NoExpose problem. Drawing.bitblt and Drawing.tileBlt
636 :     will raise the exception Exposures, if part of the source is unavailable.
637 :     Also, the PV_Exposures field for pens has been eliminated.
638 :    
639 :     - destroyWindow is now handled by the draw-master, which avoids a race
640 :     with any pending drawing requests on the window. This was a problem
641 :     with popup windows.
642 :    
643 :     - added Geometry.inside; test if a rectangle is inside another
644 :    
645 :     - fixed bug in encodePolyRects, etc.
646 :    
647 :     - changed DrawMaster to group adjacent drawing requests that use the same pen.
648 :    
649 :     - fixed the shutdown deadlock that was causing the "eXene-shutdown timeout"
650 :     message.
651 :    
652 :     WIDGET CHANGES
653 :     - fixed deadlock in widgets/router.sml
654 :    
655 :     - added tileBlt operation to Canvas widget
656 :    
657 :     - the menu widget is fixed
658 :    
659 :     - there is now a text widget
660 :    
661 :     - there is a text-field edit widget
662 :    
663 :     - the bounds_t type has been redefined; see the manual for details.
664 :    
665 :     - the box/glue layouts have been re-implemented. Also, the layout semantics
666 :     have changed; see the manual for details.
667 :    
668 :     - the type of Widget.wrapCreate has changed; point_t and size_t arguments were
669 :     bundled into a rect_t argument.
670 :    
671 :     - additional button views have been added.
672 :    
673 :     - the shell widget now provides application access to window manager
674 :     hints. In addition, the shell automatically registers size hints
675 :     with the window manager.
676 :    
677 :     EXAMPLES
678 :     - the examples have been updated to use some of the new library features
679 :    
680 :     - a simple example of the menu widget has been added
681 :    
682 :     - a calculator has been implemented using the widget set.
683 :    
684 :    
685 :     eXene-0.1 (released 3/19/91)
686 :     -----------------------------
687 :     This was the first release

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