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Revision 7 by tony, Sun Aug 5 18:28:19 2012 UTC vs.
Revision 49 by tony, Thu Feb 2 16:20:12 2017 UTC

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1 < IBX Change Log  version >  (1.0-1) Sun, 05 Aug 2012 19:28:14 +0100
1 > IBX Change Log  version                  (2.0-2) tba, 09 Jan 2017 15:31:49 +0000
2 >
3 > 1. TIBDatabase.CreateDatabase: extract full DB Name using reg ex in order to
4 >   include remote system name.
5 >
6 > 2. TIBExtract: No longer include comment header and COMMIT statement for empty
7 >   tables when data included in output.
8 >
9 > 3. Profiling: IBSQL now has conditional compilation flags to enable query performance
10 >   and timing information to be written to stdout. This may be used to locate
11 >   performance bottlenecks.
12 >
13 > 4. SQLParser: only call "OnChanging" event handler when value is different.
14 >
15 > 5. IBDynamicGrid: Update handling of navigation keys for a TDateEdit
16 >
17 > IBX Change Log  version                  (2.0-1) Mon, 09 Jan 2017 15:31:49 +0000
18 >
19 > 1. TIBEvents: Fix uninitialised variable that could result in lost events.
20 >
21 > 2. TIBExtract: Added support for FB3 "USAGE" privilege.
22 >
23 > 3. TIBExtract: data formatted as Charset set "octets" is now output using
24 >   hexadecimal notation.
25 >
26 > 4. TIBExtract: Binary Blobs and array data can now be embedded in INSERT statements
27 >   using a simple XML format.
28 >
29 > 5. TIBExtract: extract of individual Triggers and Stored Procedures can now include
30 >   grants to these objects.
31 >
32 > 6. TIBExtract: Stored Procedures and Views output in dependency order to avoid
33 >   dependency problems restoring complex databases.
34 >
35 > 7. TIBXScript: This component has been restructured to allow for the processing of
36 >   embedded XML in INSERT statements and to support interactive sources in addition
37 >   to non-interactive data sources such as files.
38 >
39 > 8. TIBXScript: CREATE DATABASE, DROP DATABASE, CONNECT statements are now supported.
40 >
41 > 9. TIBXScript: ISQL compatiable Set statements are now supported:
42 >   SET SQL DIALECT
43 >   SET TERM
44 >   SET AUTODDL
45 >   SET BAIL
46 >   SET ECHO
47 >   SET COUNT
48 >   SET STATS
49 >   SET NAMES <character set>
50 >
51 > 10. IBVersion unit added to hold current IBX Version Number information.
52 >
53 > 11. TIBExtract: Use character rather than byte length for VarChar procedure arguments.,
54 >    and domain definitions.
55 >
56 > 12. TIBExtract: Triggers now use SQL2003 syntax and database and transaction triggers
57 >    fully supported.
58 >
59 > 13. TIBExtract: when a database dump includes data, the generator values are now also set.
60 >
61 > 14: IBSQLEdit: Unit LCLPlatformDef added to uses clauses for lazarus 1.7 and later.
62 >
63 > IBX Change Log  version     (2.0-0) Tue, 06 Dec 2016 10:33:44 +0000
64 >
65 > See also doc/readme.upgrade-4-x.to.2-0-0.xhtml for important information on
66 > upgrading to IBX2.
67 >
68 > 1. Size property of TIBStringField is now the width in characters of the field
69 >   and not the byte length. This applies only to multi-byte character sets such
70 >   as UTF8. The original approach aligned with TStringField. However, the TStringField
71 >   code is not recognised as a bug and hence this change to align the behaviour.
72 >   The TStringField change is expected in fpc 3.2.0.
73 >
74 > 2. A new property AutoFieldSize: boolean has been added to TIBStringField. When
75 >   true (default) then Size property value saved in the lfm is ignored. Size is
76 >   always set from the dynamic information read from the database. It is unclear
77 >   why anyone would want to override this and set Size to false.
78 >
79 > 3. ibxscript: should now handle correctly a Case..End statement within a procedure
80 >   block.
81 >
82 > 4. IBDatabase: new property - CreateIfNotExists. If true and database does not
83 >   exist when an attempt is made to connect to it (run time only) then an attempt
84 >   is made to create the database.
85 >
86 > 5. IBDatabase: new event - OnCreateDatabase. This event is called after a database
87 >   has been successfully created as a result of a call to CreateDatabase or when
88 >   creating a database after it was found not to exist.
89 >
90 > 6.  DBControlGrid: a race condition could result in the wrong row image being
91 >    written to the cache. This has been avoided by a trip round the message
92 >    loop before rendering the row image.
93 >
94 > 7.  DBControlGrid: It is strongly recommended not to open the source DataSet for
95 >    a DBControlGrid during a Form's "OnShow" event handler. Under GTK2 this is
96 >    known to risk corrupt rendering of row images when the control is first
97 >    displayed. If necessary use "Application.QueueAsyncCall" to delay opening
98 >    of the dataset (see DBControlGrid examples) until the Form's Window has been created.
99 >
100 > 8.  DBControlGrid & IBDynamicGrid: Navigation keys should now work correctly with
101 >    a TDateEdit control located on an editor panel.
102 >
103 > 9.  TIBExtract: brought up-to-date plus many bug fixes.
104 >
105 > 10. DBControlGrid: Removed memory leak when updating rows.
106 >
107 > 11. TIBCMLocalDBSupport: fixed invalid free on upgrade.
108 >
109 > IBX Change Log  version                                           (1.4-3) Thu, 22 Sep 2016 18:10:15 +0100
110 >
111 > 1. IBCustomDataset: When calling SetCodePage, no longer request transliteration
112 >   when target codepage is CP_NONE. This is a workaround for
113 >   http://bugs.freepascal.org/view.php?id=30622.
114 >
115 > 2. DBLog option removed from TIBStatisticalService - not supported by server
116 >   since Firebird 1.5.
117 >
118 > 3. ibxscript: An error is no longer generated for "on commit preserve rows" or
119 >   similar.
120 >
121 > 4. IBCodePage: updated mapping between codepages and character id.
122 >
123 > 5. ftWideString and ftWideMemo withdrawn. There is no UTF16 character set in
124 >   Firebird. Character sets with a char width of two are not UTF16.
125 >
126 > 6. Strings received from the database are now always transliterated into UTF8
127 >   regardless of the database character set or connection character set. This
128 >   is for compatibility with the LCL.
129 >
130 > IBX Change Log  version  (1.4-2) Thu, 22 Sep 2016 15:25:27 +0100
131 >
132 > 1. IBBlob: Defer reading of blob until read method called. This avoids having to
133 >   read in an entire blob just to get the size of the blob. General performance
134 >   improvement when opening datasets containing blobs.
135 >
136 > 2. Clearing a  Blob now sets the corresponding field's modified flag.
137 >
138 > 3. IBLookupCombo: When not performing auto-complete, original query sort order
139 >   is now used.
140 >
141 > 4. IBDynamicGrid: Add OnSelectEditor event. Allows editor panel to be dynamically
142 >   determined.
143 >
144 > 5. IBDynamicGrid: Recompute column widths after dataset closed and re-opened.
145 >
146 > 6. IBLookupCombo: LazUTF8 added to uses clause to avoid compilation problems post
147 >   lazarus 1.6.0
148 >
149 > 7. IBControls. Removed "runtime" from list of paths to avoid "multiple packages"
150 >   compilation error.
151 >
152 > IBX Change Log  version                                 (1.4-1) Tue, 17 May 2016 09:14:51 +0100
153 >
154 > 1. No character set specified for connection: when a text blob is retrieved, the
155 >  character set is determined by looking up the native character set using then
156 >  Firebird API. Otherwise a text mode blob is assumed to have the same character
157 >  set as the connection.
158 >
159 > 2. TIBGUIInterface: this is an internal interface. Minor type changes to allow
160 >   for Login Dialog returing a change to the database path.
161 >
162 > 3. Design Time Database and Server login Dialogs now allow the Database Name/Server Name
163 >   to be changed from that given in the TIBDatabase/TIBServer component and for the
164 >   entered value to be saved on a project specific basis (design time only).
165 >
166 > 4. IBDynamicGrid: TDBLookupCellEditor now compares its DataFieldName with the
167 >   column fieldname. If they are the same then it is acts as a look up for the KeyValue
168 >   Otherwise, it sets the column text to the selected ListField Value.
169 >
170 > 5. IBDynamicGrid: Only visible columns are now taken into account When recalculating
171 >   column width.
172 >
173 > 6. IBLookupComboEditBox: Fix error with autocomplete query when a RelationName is given
174 >   and a case insensitive search is requested.
175 >
176 > 7. IBDynamicGrid: No longer ignores notifications removing Column Totals controls
177 >   or column ListSource.
178 >
179 > 8. IBQuery: no longer performs unnecessary refresh of SQL Text (and hence avoids an
180 >   unprepare) when closing and the text has not changed.
181 >
182 > 9. IBSQL: Base the cursor name on a GUID instead of a hexstr version of the class pointer.
183 >   Less likely to cause a cursor re-use error on Windows.
184 >
185 > 10.SV5IPC: include workaround for OSX. FPC 3.0.0 has broken ipc module for darwin.
186 >   Expected to be fixed in 3.0.2. Hence workaround only applies to 3.0.0.
187 >
188 > 11. TIBTreeView: Guard against nil destination on record changed
189 >
190 > 12. AnsiString Code page support: TIBStringField.AsString and TIBMemoField.AsString now return a
191 >    string type with the code page set to reflect the returned field encoding after
192 >    Firebird driver transliteration, if any.  FPC 3.0.0 onwards only. Behaviour unchanged for
193 >    earlier versions.
194 >
195 > 13. AnsiString Code page support: Assigning to TIBStringField.AsString and TIBMemoField.AsString
196 >    will now result in transliteration to the code page specified for the Firebird driver
197 >    if the assigned string has a different code page. FPC 3.0.0 onwards only.
198 >
199 > 14. TIBDatabase: new property UseDefaultSystemCodePage. When set any lc_ctype parameter
200 >    is ignored and the lc_ctype value, when the database is opened, is set to align with
201 >    the DefaultSystemCodePage (FPC 3.0.0 onwards). Normally, this is what you want and should ensure
202 >    platform independence. Note: this applies to FPC 3.0.0 and earlier versions. Pre FPC
203 >    3.0.0, when this property is true, the lc_ctype is UTF8 except under windows when
204 >    the GETACP is used to determine the Windows code page.
205 >
206 > 15. TIBDatabase: new property DefaultCharSetName. This is the Firebird character set
207 >    name used as the lc_ctype when the database was opened. Only valid while the
208 >    Database is connected.
209 >
210 > 16. TIBDatabase: new property DefaultCodePage (FPC >=3.0.0 only). This is the codepage
211 >    id that corresponds to the DefaultCharSetName.
212 >
213 > IBX Change Log  version                          (1.4-0) Mon, 15 Feb 2016 14:44:24 +0000
214 >
215 > 1. Unix: If Firebird Embedded Server shared object is loaded and a local database
216 >   path is given and database attach fails due to access permission issues on the
217 >   temp directory or security database, then the attach is retried with "localhost:"
218 >   prefixing the databasename. This should avoid problems when the database has to
219 >   be accessed by a local (e.g. classic) server and libfbembed is used.
220 >
221 > 2. Windows: revised search order for Firebird DLL:
222 >     i.   The Firebird Embedded Server in the application Directory.
223 >     ii.  If the FIREBIRD environment variable is set then the directory this
224 >          points to is searched for the FB Client DLL and then then underlying
225 >          "bin" directory.
226 >     iii. Registry Key HKEY_LOCAL_MACHINE\SOFTWARE\Firebird Project\Firebird Server\Instances
227 >          is used to locate the Firebird installation directory and the underlying
228 >          "bin" directory is searched for the FB Client DLL.
229 >     iv.  The Default installation directories C:\Program Files\Firebird\Firebird_2_x
230 >          are searched for the FB Client DLL.
231 >     v.   The PATH Environment variable is used to search for the FB Client DLL.
232 >     vi.  Finally the  PATH Environment variable is used to search for IBASE.DLL.
233 >
234 > 3. New Component: TIBXScript. This is an ISQL compatible SQL script execution engine.
235 >   See doc/readme.scriptengine and example applications.
236 >
237 > 4. New Component: TIBlocalDBSupport. This is a TIBDatabase support component intended to
238 >   simplify the use of the embedded firebird server on both Linux and Windows platforms.
239 >   See dpc/readme.localdatabase and example applications.
240 >
241 > 5. IBDynamicGrid: Reordering on column header click should now also work for
242 >   dynamic columns.
243 >
244 > 6. ISQLMonitor: (Windows only). Mutex added to TMultilockGate to avoid race condition
245 >   between incrementing/decrementing the lock count and signalling the event.
246 >
247 > IBX Change Log  version           (1.3-2) Tue, 26 Jan 2016 14:39:54 +0000
248 >
249 > 1.3.2 was never formally released and only made available as beta copies.
250 >
251 > 1. DBControlGrid,IBDynamicGrid: Ignore down arrow and up arrow in TCustomMemo
252 >
253 > 2. IBDynamicGrid: Now deals correctly with a single column grid which has no indicator and autosize column
254 >
255 > 3. IBLookupComboEditBox: reset timer on each key press - avoids timer going off too early
256 >
257 > 4. IBDynamicGrid: Call event OnUpdateSortOrder even when aliasname not found in dataset
258 >   i.e. when it is a calculated field
259 >
260 > 5. IBDynamicGrid: Fix problem selecting a different row when expanded row at end of grid.
261 >   This problem was due to a race condition between recalculating row heights and
262 >   determining which row was selected by the mouse click. The row height calculation
263 >   is now deferred by an extra trip round the message loop allowing the row to
264 >   be always calculated on the current grid layout rather than risking it being
265 >   calculated on the grid layout after the expanded row has been shrunk.
266 >
267 > 6. IBLookupComboEditBox: avoid race condition between cm_killfocus and cm_exit on
268 >   Windows.
269 >
270 > 7. TIBStringField: Now has two new public properties: CharacterSetName: string and CharacterSetSize: integer;
271 >   These properties allow the (Firebird) character set name for the field and the max number of bytes per character
272 >   to be determined at runtime. See doc/readme.charactersets.html.
273 >
274 > 8. TIBWideStringField: This is a new field type with the same additional public properties as above and subclassed from
275 >   TWideStringField. This field type is used with the character size reported by Firebird is two. See doc/readme.charactersets.html.
276 >
277 > 9. TIBMemoField and TIBWideMemoField: new field types with the same additional public properties as above and subclassed from
278 >   TMemoField and TWideMemoField respectively. These field types are used with Blob subtype 1 and a characterset size of
279 >   1, 3 or 4 (TIBMemoField) or 2 (TIBWideMemoField). See doc/readme.charactersets.html.
280 >
281 >   Both also have a new published property "DisplayTextAsClassName". If false (default) the displaytext is generated
282 >   from the blob text by truncating the string to the displaywidth (in characters not bytes). A displaywidth of zero
283 >   implies no truncation.
284 >
285 > 10. IBLookupComboEditBox: Force autocomplete when EditingDone called and timer active.
286 >
287 > 11. IBDynamicGrid: Call DataSet.Append when entering edit mode and dataset empty and not in insert state
288 >   (avoids "Not in Edit Mode" error).
289 >
290 > 12. IBDynamicGrid: Correctly resize grid when one column width plus indicator.
291 >
292 > 13. IBDynamicGrid: Ensure Editor Panel has focus when shown - avoids Windows API calling
293 >    DBGrid.DoExit on subsequent mouse click (e.g. on child control such as a tabbed page control.
294 >
295 > 14. IBDynamicGrid: ignore up, down tab and return when editorpanel open and focus in a TCustomGrid descendent.
296 >
297 > 15. DBControlGrid: Stop flashing grid when dataset closed and then re-opened while DisabledControls
298 >
299 > 16. IBQuery: Bug fixed that prevented SQL being set programmatically once the Parser had been invoked.
300 >
301 > 17. IBCustomDataSet: On close, parser is now freed and Select SQL reverts to value before DataSet Opened.
302 >
303 > IBX Change Log  version        (1.3-1) Sat, 18 Jul 2015 13:30:50 +0100
304 >
305 > 1.   OnCloseUp Event Handler added to TDBLookupProperties
306 >
307 > 2.   IBDynamicGrid: Call to OnEditorPanelHide is now last editor hide action - avoids
308 >     problem with row size when exception is called.
309 >
310 > 3.   IBLookupComboEditBox: Force pending autocomplete on combobox exit.
311 >
312 > 4.   IBDynamicGrid and DBControlGrid: Keyhandler now ignores up, down, escape and return keys if
313 >     in a TCustomComboBox and ignores return key if in a TCustomMemo
314 >
315 > 5.   IBLookupComboEditBox: Ensure that KeyValue is set correctly when full text
316 >     keyed in i.e. when autocomplete not performed
317 >
318 > 6.   Cleanup of "Uses" clauses and add console mode support. IBX should now support
319 >     console mode applications with all LCL required functions (builtin dialogs and
320 >     cursor management) centralised in the  IBDialogs unit. As long as "IBDialogs" is
321 >     not included in your project, IBX should compile and link with a console mode program.
322 >     See consolemode example and its "readme"for further guidence. DO NOT add the ibexpress package to a
323 >     console mode application or the IDE will automatically assume that your
324 >     application is GUI based. Instead, you should include the ibexpressconsolemode package.
325 >
326 >     IMPORTANT NOTE: IBDialogs must be included in GUI applications in order
327 >     to use the built in dialogs and cursor management. IBDialogs is
328 >     included by default if "ibexpress" is in your project source's "uses" clause.
329 >     This should be the case for all projects created through the IDE. This is why
330 >     you do not want to add the ibexpress package to console mode applications. The
331 >     ibexpressconsolemode package has been created to allow console mode programs
332 >     to avoid adding LCL dependencies when using IBX, while still having the
333 >     unit search paths set up correctly.
334 >
335 >     Existing users should check to ensure that the "ibexpress" unit is included in
336 >     each project's source file (*.lpr).
337 >
338 >     You may find that in order for the IDE to recognise that ibexpressconsolemode
339 >     exists, you have to first open the package in the IDE and then close it. This
340 >     adds it to the most recently accessed packages list. To make it permanently
341 >     available, add the package name to lazarus' staticpackages.inc file.
342 >
343 >         Thanks to Julio Jiménez for suggesting support of console mode.
344 >
345 > 7.   SQL Parser can now accept quoted strings that include new lines
346 >
347 > 8.   IBDynamicGrid: Lookup Cell Editor - the cursor is now positioned at end
348 >     of text on start of edit. This is particularly useful when tabbing to a
349 >     column and then inserting text.
350 >
351 > 9.   New Examples provided for IB Services and ISQLMonitor.
352 >
353 > 10. Fix error when writing to blob streams that recorded only the last buffer
354 >    write in the blob stream. In most cases, this did not cause a problem as the
355 >    IB Blob Stream is written in a single write. However, with the TDBImage, write
356 >    of a graphic type prefix was lost which caused a problem when the image could
357 >        not be automatically recognised.
358 >
359 > 11. Improve generation of random cursor names in TIBSQL - avoid risk of "cursor
360 >    already open" errors due to random numbers used for the cursor name being identical.
361 >
362 > 12. IBTable: corrected error that could result in an "Index out of bounds" error
363 >    when opening the table and the Primary Key is the last or only column in the
364 >    table. Thanks to Rick Hoover for the fix.
365 >
366 > 13. Fix TIBDatabase initialisation of lc_ctype under unix. Set to "UTF8" instead
367 >    of "UTF-8", and update list of available database character sets. Existing
368 >    users should check the current lc_ctype setting in their applications.
369 >
370 > IBX Change Log  version  (1.2-4) Sat, 09 May 2015 12:38:29 +0100
371 >
372 > 1.  Firebird Services: avoid List Index error when opening a service with an
373 >    empty Params property.
374 >
375 > 2.  IBControls: Fix problem with new link mechanism introduced in 1.2.3.
376 >    Link now set up in Loaded method - avoids occasional failure to apply
377 >    SQL markup on initial open.
378 >
379 > 3.  "Employees" example performance improvements when scrolling.
380 >
381 > 4.  DBControlGrid: Correctly handle edit panel removal when panel is child control of a
382 >    TFrame. Force recaching of selected frame to avoid GTK race (results in a
383 >    random image cached).
384 >
385 > 5.  DBControlGrid: Should now react to changes in panel height at run time.
386 >
387 > 6.  IBDynamicGrid: Redraws rows below on panel editor hide - avoids blank space at end of grid  
388 >    even when further rows exist.
389 >
390 > 7.  DBControlGrid: DefaultRowHeight is no longer a published property as it should
391 >    always be derived from panel height and setting this property can cause confusion.
392 >    Note for existing projects: to avoid a missing property error at run time,
393 >    each form using the DBControlGrid must be opened, updated and saved in the IDE
394 >    in order to remove the property value from the lfm.
395 >
396 >
397 > IBX Change Log  version (1.2-3) Tue, 14 Apr 2015 14:11:17 +0100
398 >
399 > 1.  TIBStoredProc. Prepare now called by ParamByName to avoid need to always
400 >    call Prepare before setting parameter values.
401 >
402 > 2.  Error message on ParamByName (all cases) not found now includes name of missing parameter.
403 >
404 > 3.  Code tidyup and more robust handling of dsql information result vector.
405 >
406 > 4.  Support for centralised handling of transaction status changes. TIBTransaction
407 >    has been given additional events "AfterEdit", "AfterInsert", "AfterDelete", "AfterPost"
408 >    and "AfterExecQuery". The first three are called after the same event is called
409 >    for an IBCustomDataSet descendent using the Transaction. The fourth is called
410 >    after a call to TIBSQL.ExecQuery, again using this transaction. These new events
411 >    enable monitoring of transaction status changes for a given transaction to be
412 >    handled in a single place. For example, when a change to the dataset occurs
413 >    an indicator can be set that shows the user that in order to save changes,
414 >    the transaction should be committed.  Rather than doing this per dataset, this
415 >    can now be done per transaction.
416 >
417 > 5.  TDataSet.CheckBrowseMode automatically posts changes to the current row when
418 >    the dataset is scrolled. However, any changes to the current row are, by default,
419 >    discarded when the dataset is closed. TIBDataSet, TIBQuery and TIBTable now
420 >    have a new property "DataSetCloseAction" that adds automatic posting of changes
421 >    on dataset close. If this property is set to dcDiscardChanges (default) then the
422 >    behaviour is unchanged from previous versions. if the value is set to dcSaveChanges
423 >    then IBX will attempt to post any unsaved changes before the dataset is closed
424 >    (and after the BeforeClose event handler is called). The exception is when the
425 >    dataset is being closed as a result of a transaction rollback. In this case,
426 >    no action is taken and any unsaved  changes are discarded. This avoids both
427 >    unnecessary overhead and the risk that a validation error may occur in the Post
428 >    raising an exception and thereby preventing a rollback.
429 >
430 > 6.  String Field sizes and Display Widths should now be correct for multi-byte character sets.
431 >    In earlier versions, the Display Width was set to the maximum byte width rather than the character
432 >    width. Display Widths are now corrected by dividing by the max byte width per character.
433 >    For UTF8 character sets, the byte width is four and hence the Display Width will be
434 >    the byte width divided by 4. The byte width of each character set is determined
435 >    dynamically when the database connection is estabished from the RDB$CHARACTER_SETS
436 >    system table. (see also http://bugs.freepascal.org/view.php?id=27766).
437 >
438 > 7.  SQLParser will now correctly parse SQL Text which contains ':' within quoted string.
439 >
440 > 8.  IBLookupComboEditBox: List should now always be restored to full list when the
441 >    control loses focus. Default Key press default interval reduced to 200ms.
442 >
443 > 9.  DBControlGrid: Ensure that selection is changed to newly appended row, even
444 >    when dataset rows are less than visible rows.
445 >
446 > 10. IBDynamicGrid: Editor Panel is not shown on indicator click if Datasource
447 >    does not exist or DataSet is empty. More responsive on dataset open. New event
448 >    OnRestorePosition. Column sort disabled if no header row.
449 >
450 > 11. IBTreeView: improved handling of response to "Add Node". Avoid scrolling dataset
451 >    while dataset state is dsInsert. Avoids posting errors.
452 >
453 > 12. IBControls: New mechanism for distributing UpdateSQL and UpdateParams events. This is to
454 >    avoid conflict with DisableControls/EnableControls with Master/Detail linked tables.
455 >
456 > 13. IBLookupComboEditBox: Now avoids SQL Errors when combo box text contains single quotes.
457 >
458 > 14. TIBDataSet and TIBQuery: new Event - OnValidatePost. This event has been introduced
459 >    to solve a specific problem. That is when the dataset cursor is moved (e.g. by
460 >    a grid mouse click and the current row is being edited or inserted. In this case, TDataset
461 >    always "posts" the current record regardless or whether or not it may be more appropriate
462 >    to cancel any changes; the post occurs before the "BeforeScroll" event fires due to the way the
463 >    "MoveBy" function is implemented by TDataSet. The OnValidatePost event is called
464 >    as the first action of the "Post" method and allows the handler to convert the Post
465 >    into a Cancel if that is the appropriate action on moving to a different row. This is
466 >    achieved by returning with "CancelPost" argument set to true. Note that an exception could be
467 >    raised here, but it may still be more appropriate to validate a post and signal
468 >    a problem in the "BeforePost" event handler. See readme.automaticposts.xhtml)
469 >
470 > 15. On Unix derived systems, the Firebird library name can now be given as a colon
471 >    separated list. Each library name on the list is tried in turn, in left to right
472 >    order with the first found being used as the firebird library. By default, on Linux,
473 >    the library name list is 'libfbembed.so.2.5:libfbembed.so.2.1:libfbclient.so.2'. This can be
474 >    overidden by the FBLIB environment variable or the OnGetLibraryName function.
475 >
476 >    Note: when using the libfbembed.so, if you prefix the database name with "localhost:"
477 >    then it will still attempt to access the database via the Firebird Server and will
478 >    require a username and password. If only the pathname is given, then the username
479 >    and password should be omitted and the unix file permissions are used to grant
480 >    access.
481 >
482 > IBX Change Log  version  (1.2-2) Sat, 14 Mar 2015 11:35:04 +0000
483 >
484 > 1.  A new IBControl - TDBControlGrid has been added. TDBControlGrid a lookalike
485 >    rather than a clone for the Delphi TDBCrtlGrid. TDBControlGrid is a single column grid
486 >    that replicates a TWinControl - typically a TPanel or a TFrame in each row. Each row
487 >    corresponds to a row of the linked DataSource. Any data aware control on the
488 >    replicated (e.g.) TPanel will then appear to have the appropriate value for the row.
489 >
490 > 2. As suggested by Julio Jiménez, a new property "SQLHourGlass" has been added to TIBDatabase.
491 >   When set to false (default true), the Hour Glass cursor is supcpressed and no cursor change
492 >   takes place during database access. This may be useful when there are performance issues with
493 >   the change of cursor. Setting the property to false suppresses the change of cursor.
494 >
495 > 3. As suggested by Julio Jiménez, a new property "AutoCommit" has been added to TIBDataSet, TIBQuery
496 >   and TIBTable. When set to acCommitRetaining (Default: acDisabled), a call is made to
497 >   Transaction.CommitRetaining immediately after every Post or Delete. This has the effect of
498 >   making all changes permanent immediately rather than when the transaction is explicitly
499 >   committed.
500 >
501 > 4. Experimental support for the Firebird 3 SQL_BOOLEAN type has been added while still
502 >   using the legacy Firebird API. Thanks to Gabor Boros for helping to test this feature.
503 >
504 > IBX Change Log  version      (1.2-1) Fri, 13 Mar 2015 11:14:15 +0000
505 >
506 > Development version only.
507 >
508 > IBX Change Log  version   (1.2-0) Thu, 26 Feb 2015 10:34:04 +0000
509 >
510 > 1. An internal select SQL Parser is now available for TIBCustomDataset descendents.
511 >   This is typically used during an "OnBeforeOpen" event handler to manipulate the
512 >   "Where" and "Having" clauses to implement user specified filters of arbitrary
513 >   complexity.
514 >
515 > 2. A new Component Palette entry "Firebird Data Controls" is now available. This has
516 >   three new data aware controls dependent on IBX and which make use of the SQL Parser.
517 >   These are:
518 >
519 >   - TIBLookupComboEditBox
520 >   - TIBDynamicGrid
521 >   - TIBTreeview
522 >
523 >   TIBLookupComboEditBox is a TDBLookupComboBox descendent that implements "autocomplete"
524 >   of typed in text and "autoinsert" of new entries. Autocomplete uses SQL manipulation
525 >   to revise the available list and restrict it to items that are prefixed by the
526 >   typed text (either case sensitive or case insensitive). Autoinsert allows a
527 >   newly typed entry to be added to the list dataset and included in the available
528 >   list items.
529 >
530 >   TIBDynamicGrid is a TDBGrid descendent that provides for:
531 >   - automatic resizing of selected columns to fill the available row length
532 >   - automatic positioning and sizing of a "totals" control, typically at the
533 >     column footer, on a per column basis.
534 >   - DataSet resorting on header row click, sorting the dataset by the selected column.
535 >     A second click on the same header cell reversed the sort order.
536 >   - Support for a "Panel Editor". That is on clicking the indicator column, the row
537 >     is automatically expanded and a panel superimposed on it. The panel can have any
538 >     number of child controls, typically data aware controls with the same datasource
539 >     as the grid allowing for editing of additional fields and more complex editors.
540 >   - Reselection of the same row following resorting.
541 >   - A new cell editor that provides the same functionality as TIBLookupComboEditBox.
542 >     Its properties are specified on a per column basis and allows for one or more
543 >     columns to have their values selected from a list provided by a dataset.
544 >     Autocomplete and autoinsert are also available. The existing picklist editor
545 >     is unaffected by the extension.
546 >
547 >   TIBTreeView is a data aware TCustomTreeView.
548 >
549 > 3. When getting a field value using FieldByName.AsVariant, an SQL_INT64 with a
550 >   zero scale will no longer return an error. An Int64 will be returned instead.
551 >
552 > 4. TIBTransaction now has events for Before and After Transaction End and a new function
553 >   "GetEndAction" allowing the EndAction to be accessed by these event handlers.
554 >
555 > 5. TIBQuery can now handle correctly queries which contain the same keyword parameter
556 >   repeated multiple times.
557 >
558 > 6. TIBUpdateSQL will no longer return an error when "RowsAffected" is <> 1. This error
559 >   check used to get in the way of using Stored Procedures, and "Update or Insert"
560 >   statements.
561 >
562 > 7. Insert, Modify and Delete property Editors now support Query Generation from
563 >   Stored Procedures.
564 >
565 > 8. Three new examples illustrate the use of the new IB Controls
566 >
567 >
568 > IBX Change Log  version  (1.1-0) Mon, 07 Jul 2014 14:01:07 +0100
569 >
570 > 1. TIBXSQLVAR code clean up and optimisation to improve client side "prepare" and parameter
571 >   setting performance. See "readme.field+param.names in the doc folder.(Thanks to
572 >   Gabor Boros for reporting this problem and for testing the improvements).
573 >
574 > 2. IBX can now support dialect 3 quoted column names that contain spaces and which differ only in their case.
575 >   See readme.field+param.names in the doc folder.
576 >
577 > 3. IBX SQL Editors will now automatically add double quotes around column names when the database
578 >   dialect is "3" and the column name contains spaces or is a Firebird 2.5 SQL Reserved Word.
579 >
580 > 4. Param Type LargeInt now supported in TIBQuery and TIBStoredProc
581 >
582 > 5. TIBSQL.ExecQuery retry on failure removed to avoid problems with "at most once"
583 >   actions.
584 >
585 > 6. TIBTransaction.SetDefaultDatabase uses SetObjectProp instead of mis-using SetOrdProp (with
586 >   thanks to Yuriy Kopnin for pointing this out).
587 >
588 > 7. GenerateParamName is now a published property of TIBSQL, TIBQuery and TIBDataSet.
589 >
590 > 8. varWord, varShortInt and varInt64 added to TIBXSQLVAR.SetAsVariant and hence now available as variant types
591 >   for both fields and parameter setting.
592 >
593 > 9. Changes to the Select SQL in an IBCustomDataset descendent should now be
594 >   visible in the Fields Editor immediately afterwards - rather than only after cycling the "active" property.
595 >
596 > 10. TIBSQL SQL editor will operate correctly and not report an SQL syntax error on SQL test,
597 >    when DSQL ('?') parameter placeholders are used and the TIBSQL.GenerateParamNames property is set to true.
598 >
599 > 11. TIBTable now has a property editor for "MasterFields"
600 >
601 > 12. SQL Property Editors now include a checkbox "Allow DSQL Placeholder". This corresponds to the
602 >    GenerateParamNames property and should be set when using DSQL (i.e. '?') style parameters.
603 >
604 > 13. The IBTransaction editor now has a radio button ("Unspecified") which is set when the combination
605 >    of settings is unrecognised. Selecting this radio button has no effect on the settings.
606 >  
607 >
608 > IBX Change Log  version                 (1.0-5) Sat, 28 Dec 2013 19:22:23 +0000
609 >
610 > 1. TBookmark change conditional compile changed to >= 2.7.0 to match revised availability of change.
611 >
612 > IBX Change Log  version          (1.0-4) Thu, 28 Feb 2013 16:56:13 +0000
613 >
614 > 1. In a TIBCustomDataset descendent, a generator now only sets the value when
615 >   it is null. This allows for alternative user defined setting of the generator
616 >
617 >   Many thanks to Julio Jiménez for this fix
618 >
619 > 2. An Error Dialog is now displayed in the Lazarus IDE if IBX cannot find the Firebird Library
620 >   and suggests that the user may have forgotten to install it.
621 >
622 > IBX Change Log  version         (1.0-3) Thu, 22 Nov 2012 22:53:39 +0000
623 >
624 > 1. Conditional compilation used to limit registration of TIntegerField to
625 >   Lazarus versions less than 1.1
626 >
627 > 2. When a database connection is created, character set is now by default set
628 >   to UTF8 (Unix) or to the current Windows code page (Windows) if in the range
629 >   1250 to 1254.
630 >
631 >
632 > IBX Change Log  version     (1.0-2) Tue, 09 Oct 2012 09:10:30 +0100
633 >
634 > 1. TBookmark change conditional compile changed to > 2.6.2 to match expected availability of change.
635 >
636 >
637 > IBX Change Log  version    (1.0-1) Sun, 05 Aug 2012 20:00:04 +0100
638  
639   1. In IBCustomDataset. Changed CurBookmark from string to TBookmark for compiler versions > 2.6.0
640     Necessary because of TBookmark type and TDataSet.Bookmark property change in fpc 2.7.1

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