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Revision 426 by tony, Mon Nov 27 14:36:52 2023 UTC

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1 < IBX Change Log  version                      (1.1-0) Mon, 07 Jul 2014 14:01:07 +0100
1 > IBX Change Log  version (2.6-4 Build 14094) Sat, 21 Oct 2023 15:03:30 +0100
2 >
3 > 1. TIBCustomDataSet.ApplyUpdates: ensure controls are not permanently disabled
4 >   if ApplyUpdates called before a cursor exists.
5 >
6 > 2. TIBCustomDataSet.CreateBlobStream: add check for empty dataset before
7 >   creating the blob.
8 >
9 > IBX Change Log  version (2.6-3 Build 14080) Sat, 21 Oct 2023 14:14:22 +0100
10 >
11 > 1. Update to calls to EInterbaseError to add default code page. Consequential
12 >   on change to fbintf.
13 >
14 > 2. Update some examples to replace test for null date with the NullDate constant
15 >   instead of zero. This is because Laz 3.0 changes the value of NullDate.
16 >
17 > IBX Change Log  version (2.6-2 Build 14016) Sat, 05 Aug 2023 11:54:55 +0100
18 >
19 > 1. Fixed repeated "type" keyword in IBBufferCursors. This may cause a compile error
20 >   with later versions of fpc - later than 3.2.2.
21 >
22 > 2. IBUpdateSQL. update internal queries if parent dataset database changed.
23 >
24 > 3. IBUpdateSQL: Do not prepare an empty internal query.
25 >
26 > 4. IBBufferedCursors: avoid range error when max field no. is > fields.count
27 >
28 > 5. IBBufferedCursors: avoid End of File error if refresh query returns and empty row count
29 >
30 > IBX Change Log  version (2.6-1 Build 13985) Mon, 17 Jul 2023 14:16:41 +0100
31 >
32 > 1. Maintenance update of 2.6.0. This version is still at beta.
33 >
34 > 2. Reverse out changes to DrawCellText signature in IBArrayGrid and IBDynamic Grid.
35 >   See https://gitlab.com/freepascal.org/lazarus/lazarus/-/commit/53aaae9c5e2a5edac5b1d2f70739a8ef7b0a9623
36 >
37 > 3. ibxscript: When parsing a store procedure or function with a variable name
38 >   enclosed in doublequotes, the double quotes are no longer removed.
39 >
40 > IBX Change Log  version (2.6-0 Build 13976) Thu, 22 Jun 2023 13:49:22 +0100
41 >
42 > NOTE: THIS VERSION RE-WRITES THE INTERNAL BUFFER MANAGER AND SHOULD BE CONSIDERED
43 >      AS BETA SOFTWARE. EVEN THOUGH IT HAS PASSED ALL REGRESSION TESTS, IT CANNOT
44 >      BE ASSUMED TO BE PRODUCTION READY UNTIL WIDER USE. PLEASE REPORT ANY
45 >      ISSUES TO support@mwasoftware.co.uk
46 >
47 > 1. Complete rewrite of internal buffer management in order to improve performance
48 >   and maintainability. Highlights:
49 >
50 >   * Extending the size of the buffer pool no longer has to copy the entire record
51 >     cache. Instead, a new extent is simply added to the buffer pool.
52 >   * A memory to memory copy of each display buffer now is avoided when scolling the
53 >     dataset.
54 >   * A separate set of buffers is now used for calculated fields. This avoids
55 >     having to keep copies of calculated field values in the buffer cache.
56 >   * Compact bitmaps are used to record null status and need to refresh in each
57 >     buffer.
58 >   * Display buffer type changed from PChar to TRecordBuffer in line with change of
59 >     buffer type in FCL-DB.
60 >
61 > 2. TIBUpdateSQL: changes to SQL text will close linked dataset if open. This is
62 >   to ensure same behaviour as TIBDataset, TIBTable and TIBStoredProcedure.
63 >
64 > 3. TField Provider Flags: pfRefreshOnInsert and pfRefreshOnUpdate are now supported.
65 >   If either or both of these flags are set at design time (using the fields editor)
66 >   then this forces a row refresh on respectively insert or update, or both, when the
67 >   corresponding field is not present in an SQL RETURNING clause.
68 >
69 > 4. TIBCustomDataset.FieldDefsFromQuery moved to a helper class (TFieldDefsMaker) in order to improve
70 >   maintainability and readability and to add identification of primary key fields.
71 >
72 > 5. TIBQuery, TIBDataset and TIBTable. Traditionally, IBX has implemented the Refresh method
73 >   as a refresh of the current row. However, this is different behaviour to that described
74 >   in the FPC documentation for TDataset.Refresh which is described as "refetches the data in
75 >   the dataset from the underlying database, and attempts to reposition the cursor on
76 >   the same record as it was". IBX now complies with the FPC definition of Refresh.
77 >
78 > 6. A progammatic Row Refresh should no longer be required.
79 >   Use Insert/Update... returning to refresh any fields that may change following an
80 >   insert or update i.e. Identify fields on Insert only, Computed By, Blob and array fields
81 >   on both. If there are any other fields (e.g. updated by triggers) set the appropriate ProviderFlag
82 >   for the field at Design Time to force a row refresh if not in the returning clause.
83 >
84 > 7. It should now be possible to insert a row into an empty unidirectional dataset.
85 >
86 > 8. New TIBQuery, TIBDataSet and TIBTable property: BufferChunksInFirstBlock (default 50).
87 >   This gives the number of buffers in the initial block for the buffer pool in
88 >   bi-directional datasets. BufferChunks (default 1000) gives the number of buffers
89 >   in subsequent buffer pool blocks. This avoids large and mostly unused memory allocations
90 >   for small datasets.
91 >
92 > IBX Change Log  version (2.5-1 Build 13927) Tue, 6 Dec 2022 23:13:00 +0000
93 >
94 > 1. IBCustomDataset: avoid problem with additions to TFieldType by using a subset instead.
95 >
96 > 2. TIBDynamicGrid: change DrawCellText declaration to comply with laz 2.3.0
97 >
98 > 3. TIBArrayGrid: change DrawCellText declaration to comply with laz 2.3.0
99 >
100 > IBX Change Log  version (2.5-0 Build 13868) Fri, 29 Jul 2022 09:52:01 +0100
101 >
102 > 1. TIBTransaction: new properties
103 >    property TransactionID: integer read GetTransactionID;
104 >    property IsReadOnly: boolean read GetIsReadOnly;
105 >    {published}
106 >    property TransactionName: string read FTransactionName write SetTransactionName;
107 >
108 > 2. IBCustomDataset: per row blob and array buffer cached clear before processing
109 >   Insert or Update...Returning. This allows blobs and arrays to be returned
110 >   by the statement.
111 >
112 > 3. TSQLXMLReader moved from IBXScript to package fbintf unit IBUtils.
113 >
114 > 4. TransactionName initialised to a newly generated GUID if empty.
115 >
116 > 5. New unit: IBJournal. This provides the TIBJournal component which is a wrapper
117 >   for the fbintf package's journaling capability. TIBJournal is used to set the
118 >   file path and filename for the journal file and to Enabled (start journaling) and
119 >   disable (stop journaling). See fbintf/doc/README.ClientSideJournaling.pdf for
120 >   more information, and comments in IBJournal.pas.
121 >
122 > 6. TIBDatabase.InternalTransaction is now a read only transaction.
123 >
124 > 7. Bug fix: blob id no longer set to null on update when blob has not been
125 >   retrieved.
126 >
127 > 8. Row auto refreshed on update/insert if blob or array field updated and field
128 >   not in a returning clause.
129 >
130 > 9. ColumnCount moved from record buffer header to a single per dataset count. Reduces
131 >   buffer overhead and avoids problem when refresh query has a different column
132 >   count to select query i.e. incorrectly changing number of columns.
133 >
134 > 10. IBExtract: support added for UDR Functions, Procedure and Trigger declarations.
135 >
136 > 11. TIBDatabaseInfo. New property FirebirdVersion. This returns the current Firebird version
137 >    string. Note that the Version property returns an InterBase compatible version string.
138 >
139 > 12. IBExtract: ensure sql identifiers returned as a LIST are always quoted.
140 >
141 > IBX Change Log  version (2.5-0 Build 12933) Mon, 29 Nov 2021 14:59:54 +0000
142 >
143 > 1. IBCustomDataset: Modify TISQL component now defaults to GoToFirstRecordOnExecute := true.
144 >   This is for compatibility with Firebird 5 where Update...Returning can return
145 >   a cursor.
146 >
147 > IBX Change Log  version (2.4-3 Build 12886) Sat, 23 Oct 2021 14:58:30 +0100
148 >
149 > 1. Add try-..except check when initially loading library in IDE. This should
150 > ensure that IDE continues to load even when a failure occurs in IBX load
151 > library.
152 >
153 > 2. IBXScript: now recognises a CASE...END block within a stored procedure and
154 >   hence will correctly detect end of the outer containing block when the block
155 >   contains a SELECT ... CASE ... END construct.
156 >
157 > 3. IBExtract: some further tidying up to remove extraneous white space.
158 >
159 > 4. IBCustomDataSet: DefaultFieldClasses array declaration updated to avoid compile time
160 >   errors when extra elements are added to DB.TFieldType.
161 >
162 > 5. IBUpdate: updated to reflect changes to ISQLParam.
163 >
164 > 6. IBXScript: now correctly parses a DECLARE statement which includes a quoted string.
165 >
166 > 7. IBExtract: for ODS >=13, increment generator value by one for ALTER SEQUENCE statement.
167 >
168 > 8. IBSQL: Support for scrollable cursors added (note: local databases only)
169 >
170 > IBX Change Log  version (2.4-2 Build 12773) Mon, 23 Aug 2021 11:59:42 +0100
171 >
172 > 1. TIBDatabaseInfo: review and tidy-up of property types. Most widen to int64 with the
173 >   exception of those defined to be one byte wide e.g. DBImplementationNo.
174 >
175 > 2. TIBSQL: Batch Update/Insert support added.
176 >
177 > 3. TIBStoredProc: when generating the SQL, the value of the StoredProcName property
178 >   is no longer automatically converted to upper case when it is syntactically a
179 >   SQL Identifier. This is to support the use of stored procedures defined e.g.
180 >   as CREATE PROCEDURE "iCASE".
181 >
182 >   There could be a backwards compatibility issue when the StoredProcName was entered
183 >   manually at design time. That is not selected from the drop down list. If the
184 >   StoredProcName is entered in mixed case and the procedure was declared e.g. as
185 >   CREATE PROCEDURE iCASE, then the SQL generation will be incorrect. You should
186 >   ensure that the value of the StoredProcName is all upper case, unless it was
187 >   declared under dialect 3 and explicitly as mixed case (i.e. delimited by double
188 >   quotes).
189 >
190 >   Note that when a stored procedure name was declared delimited in double quotes,
191 >   as in the first example above, the value of the StoredProcName property must not
192 >   include the delimiters (double quotes).
193 >
194 > 4. IBXUpgradeConfFile: an exception is now raised if a patch file specified in
195 >   upgrade.conf was not found. This replaces silently ignoring the problem.
196 >
197 > 5. TIBLocalDBSupport: new property "SectionHeaderTemplate". This defaults to
198 >   'Version.%.3d' and is used to generate the section header names (for a given
199 >   version no.) in the upgrade.conf file.
200 >
201 > IBX Change Log  version (2.4-1 Build 12550) Wed, 23 Jun 2021 13:59:14 +0100
202 >
203 > 1. -c command line option added to fbsql example program. Used to set connection
204 >   character set.
205 >
206 > IBX Change Log  version (2.4-0 Build 12543) Mon, 22 Feb 2021 11:00:08 +0000
207 >
208 > 1. Firebird 4 support added.
209 >
210 > 2. New FB4 data types TIME WITH TIME ZONE, TIMESTAMP WITH TIME ZONE, DECFLOAT and
211 >   extended precision NUMERIC fields are supported.
212 >
213 > 3. TFmtBCDField is used to support access to DECFLOAT and extended precision NUMERIC fields.
214 >
215 > 4. TIBDateTimeField and TIBTimeField are introduced in support of TIMESTAMP WITH TIME ZONE
216 >   and TIME WITH TIME ZONE fields. These inherit from TDateTimeField.
217 >
218 > 5. IBExtract now supports FB4 enhancements:
219 >   - new data types as above
220 >   - Identity column extensions
221 >   - Default user role
222 >   - SQL Security clause for Database, Tables, Procedures, Functions and Triggers
223 >   - Internal Functions
224 >
225 > 6. IBExtract: new event: OnExtractLines.
226 >
227 > 7. IBExtract: revert create trigger to legacy syntax see Firebird CORE-6243, CORE-5545 and DOC-145
228 >
229 > 8. IBXServices: Server version no. parsing now allows any letter before major version number
230 >   and is no longer restricted to 'V' e.g. "LI-T4.0.0.1436 Firebird 4.0 Beta 1"
231 >
232 > 9. TIBDataSet and TIBQuery: new property TZTextOption. Used to determine the default
233 >   format for rendering a time zone.
234 >
235 > 10. TIBDataSet and TIBQuery: new property DefaultTZDate. Used to provide the default date
236 >     to convert TIME WITH TIME ZONE data type values to and from GMT.
237 >
238 > 11. Unit name IBTypes changed to IBInternals. Internal interfaces TIBGUIInterface and TIBTimerInf renamed to
239 >    IIBGUIInterface and IIBTimerInf respectively.
240 >
241 > 12. Constants: DPBPrefix and TPBPrefix moved to IB unit. DPBConstantNames and TPBConstantNames
242 >    now accessible as properties of TIBDatabase and TIBTransaction respectively.
243 >
244 > 13. String Fields: when a fixed character with (CHAR) field is returned, it is now
245 >    truncated to its fixed character width rather than being right padded with
246 >    white space to the maximum data size.
247 >
248 > 14. TIBTable.Empty table. In additional to deleting all records in the underlying
249 >    table, the internal buffers are now also flushed ensuring that the TIBTable is
250 >    also empty.
251 >
252 > 15. TBatchSQLStatementReader: Line buffer is now cleared on call to reset.
253 >
254 > 16. TIBXControlService descendents: DatabaseName may now be set using a database
255 >    connect string. The database name is extracted from the connect string.
256 >
257 > 17. DBControlGrid: Minor bug fixes. avoid AV on form closure, avoid black panel
258 >
259 > 18. TIBExtract: Data type of COMPUTED By columns is no longer included in SQL.
260 >
261 > 19. Local database on Linux and with legacy API and FB 2.5 embedded server: fixed problem with password
262 >    not being present as required.
263 >
264 > 20. IBTreeView split into DBTreeView and IBTreeView. This former is an IBX indepedent
265 >    version that can be customised to work with other database drivers.
266 >
267 > 21. ISQLMonitor: use platform specific LineEnding to delimit messages. Avoids
268 >    unnecessary CR at end of line on Unix platforms.
269 >
270 > 22. ISQLMonitor: Unix: Default semaphore timeout increased from 1 second to 10
271 >    seconds in order to reduce risk of message loss.
272 >
273 > 23. ISQLMonitor: read and write count statistics now available via:
274 >      property TIBSQLMonitor.ReadCount;
275 >      IIBSQLMonitorHook.GetWriteCount: integer;
276 >
277 > 24. ISQLMonitor tidy up and unit split. IPC functions moved to new unit IBIPC.
278 >
279 > IBX Change Log  version (2.3-5 Build 12350) Tue, 25 Aug 2020 16:11:02 +0100
280 >
281 > 1.  TIBStringField: when a string value is read from a dataset buffer, if the
282 >    number of UTF8 characters exceeds the string size then string is truncated
283 >    to the maximum string size. This is  usually a problem with fixed width columns
284 >    right padded with white space.
285 >
286 > 2.  SQLFiltered and SQLFilterParams added to TIBQuery, TIBTable and TIBDataset.
287 >    If SQLFiltered is set then when a dataset is opened, each line in the
288 >    SQLFilterParams property is assumed to be a SQL condition clause and
289 >    ANDed into the Where clause of the SQL Select statement provided as a
290 >    dataset property. Each such SQL condition thus acts as an additional filter
291 >    on the dataset.
292 >
293 > 3.  The Filtered property inherited from TDataset is no longer used for SQL (server
294 >    side filters).
295 >
296 > 4. IBLookupComboEditBox: Selection should no longer reset to start of text when
297 >   text matches complete entry.
298 >
299 > 5. TIBDataLink: Detail Dataset params not refreshed unless both master and detail
300 >   dataset are active (avoids risk of access violation if master is inactive)
301 >
302 > 6. TIBEvents: Registered property can now be set at design time even if database not open
303 >
304 > 7. TIBEvents: component now correctly re-initialised after call to UnregisterEvents.
305 >   This should prevent "spillover" of events between sessions.
306 >
307 > 8. TIBCustomDataset: GetNextRecord now called when reseting to first record of a unidirectional dataset.
308 >   This should ensure that the internal buffer is set up correctly and avoids
309 >   a duplicate initial row.
310 >
311 > 9. TIBStringField: DataSize now given as byte size of string less trailing any zero character.
312 >   That is, the DataSize should be the field size * character set width. The
313 >   value returned by DataSize is now the same as the Dataset buffer size reserved
314 >   for the field.
315 >
316 > 10. IBExtract: Tidyup of SQL generation. Avoid unnecessary double quotes.
317 >
318 > 11. TIBCustomDataset: Add checks on buffer sizes when copying data from row to field buffer
319 >    and vice-versa. This may result in an exception being raised (correctly) for
320 >    older programs when using dataset fields added to a form and the database has been
321 >    upgraded. For example, computed fields can change from 32-bit to 64-bit integers.
322 >    In such cases, the field needs to be deleted in the IDE fields editor and then
323 >    added back in.
324 >
325 > 12. IBCustomDataSet: CanInsert, CanEdit, CanDelete and CanRefresh updated to return
326 >    false if query contains only white space and not just empty.
327 >
328 > 12. IBCustomDataset: Blob data is now cleared when TDataSet.Cancel is called. This
329 >    should ensure that (e.g.) a TDBMemo is correctly refreshed after a dataset edit
330 >    is cancelled.
331 >
332 > 13. IBCustomDataset: SetArrayIntf should no longer cause an access violation if
333 >    called on a null field.
334 >
335 > 14. IBCustomDataSet: An access violation should no longer occur when calling CancelUpdates
336 >    results in an empty dataTC86                Client side Filtered Dataset    1       X
337 > set.
338 >
339 > 15. IBCustomDataSet: OnUpdateError should now be called in all circumstances when
340 >    a cached update is applied and an exception is raised.
341 >
342 > 16. IBCustomDataSet: Avoid access violation when SetBookmarkData called with nil pointer.
343 >
344 > 17. Console Mode Local Database support: backup/restore should now work correctly.
345 >
346 > 18. Local Database Support: if an upgrade fails, a downgrade is now performed if
347 >    possible and an exception raised.
348 >
349 > 19. MinimumVersionNo added to Local Database Support. Database will not open if
350 >    below this version no. and upgrade not possible.
351 >
352 > IBX Change Log  version (2.3-4 Build 12041) Fri, 17 Apr 2020 14:00:32 +0100
353 >
354 > 1.  TIBXDataSet and Generators: Generator Names that are not all upper case or
355 >    not SQL Identifiers are now supported.
356 >
357 > 2.  TIBXScript: Set Generator is no longer rejected as unrecognised SQL and is
358 >    passed to the Firebird engine for execution.
359 >
360 > 3.  TIBDataSet: Unidirectional datasets now give an error message if an attempt
361 >    is made to scroll back.
362 >
363 > 4.  New unit: IBMessages.pas. Contains only messages used by IBX and not FBIntf
364 >
365 > 5. TIBLookupComboEditBox: When generating auto-complete SQL, the ListField is now
366 >   only enclosed in double quotes in SQL dialect 3 and when it needs to be.
367 >
368 > 6. TIBLookupComboEditBox: when the list source opens, the ListField name is now
369 >   validated. If no match is found in the list of field names and the database has
370 >   been opened in SQL Dialect 3, then the ListField Name is converted to upper case
371 >   if it then matches a field name. Otherwise, a Listfield not valid exception occurs.
372 >
373 > 7. IBGeneratoreditor.pas: Add missing parenthesis around "IS" statement for compliance
374 >   with fpc 3.2.
375 >
376 > IBX Change Log  version (2.3-3 Build 11512) Fri, 28 Dec 2018 10:04:17 +0000
377 >
378 >
379 > 1. New property for TIBDatabase and TIBXServicesConnection. This is "ConfigOverrides"
380 >   and is used to override the default settings in the client side "firebird.conf" This
381 >   includes "WireCompression" and "WireCrypt". The value of this property is a "TStrings".
382 >   Each line of the string list should be a setting in the same format as "firebird.conf".
383 >   For example "WireCompression = true" in order to request wire compression on the client side.
384 >
385 >   Note: explicit settings in the client side "firebird.conf" appear to take precedence
386 >   over settings given in TIBDatabase and TIBXServicesConnection. Many client side settings
387 >   also require a compatible setting in the server side "firebird.conf". For example
388 >   "WireCompression = true" must also be set in the server's "firebird.conf" for wire
389 >   compression to be used.
390 >
391 >   Whether or not WireCompression or WireCrypt are in use can be checked using the information
392 >   returned with the Client/Server protocol version. See ibx/examples/dbadmin and
393 >   ibx/examples/dbinfo for examples of how to display this information.
394 >
395 > 2. New property for TIBDatabase and TIBXServicesConnection: "WireCompression". This
396 >   is a "convenience" property. If set the "WireCompression=true" is added to the
397 >   ConfigOverrides. If unchecked then this setting is removed.
398 >
399 > 3. TIBExtract: 64-bit integer types are now correctly extracted as "BIGINT" and
400 >   not "INT64".
401 >
402 > 4. New published properties for TIBCSVDataOut, TIBInsertStmtsOut and TIBBlockFormatOut
403 >   These are:
404 >    property TimestampFormat: string;
405 >    property DateFormat: string;
406 >    property TimeFormat: string;
407 >
408 >   Respectively, these provide the date time format templates for SQL types: TIMESTAMP,
409 >   DATETIME and TIME. The format strings use the standard FPC date/time format
410 >   characters (see https://www.freepascal.org/docs-html/rtl/sysutils/formatchars.html).
411 >
412 >   If any of the above properties are set to an empty string, then the locale default
413 >   is used. This uses the ShortDateFormat and the LongTimeFormat. In timestamp, the
414 >   locale default is extended by appending '.zzz' to include milliseconds.
415 >
416 >   TIBCSVDataOut by default sets these properties to the empty string, while the other
417 >   two use: 'yyyy.mm.dd hh:nn:ss.zzz', 'yyyy.mm.dd' and 'hh:nn:ss.zzz' respectively.
418 >
419 > 5. New published property for TIBCSVDataOut:
420 >     property QuoteStrings: boolean (default true)
421 >
422 >   If false then strings are unquoted, otherwise, the QuoteChar property value is
423 >   used to delimit each and every string in the output.
424 >
425 > 6. New published properties for TIBCSVDataOut:
426 >    property FieldSeparator: string;
427 >    property HeaderSeparator: string;
428 >
429 >   Respectively, these provide the separator character(s) used to separate fields
430 >   in data and header rows. Both default to ','.
431 >
432 > 7. New published properties for TIBCSVDataOut and TIBBlockFormatOut:
433 >    TOnFormatTextString = procedure(sender: TObject; var TextString: string) of object;
434 >    property OnFormatTextString;
435 >
436 >   This event handler can be used to process text strings before they are included
437 >   in the output e.g. to replace unprintable characters with alternative strings.
438 >   This only applies to columns with an SQL Type of SQL_VARYING and SQL_TEXT.
439 >
440 > 8. TIBDataSet now raises an exception when ParamByName called with an invalid parameter name.
441 >   Uses "FindParam" if in order to find out if a parameter with a given name exists
442 >   and without raising and exception if it does not.
443 >
444 > 9. TIBQuery now uses IBX SQL Parser instead of the TParams SQL parser in order to ensure
445 >   consistency with SQL queries.
446 >
447 > 10. CaseSensitiveParameterNames property added to TIBSQL, TIBDataSet and TIBQuery.
448 >    When true, SQL statement parameter names are parsed case sensitive. Note for
449 >    TIBDataSet only applies to Select query.
450 >
451 > 11. IBEvents: removing a TIBEvent component from a form should no longer result in
452 >    an IDE exception.
453 >
454 > 12. LocalDBSupport: initial database creation should now work correctly
455 >    when the schema source is an sql file.
456 >
457 > 13. TIBCMLocalDBSupport: new event handler "property OnProgressEvent: TOnProgressEvent"
458 >    when defined, this handler will be called by the internal TIBXScript during
459 >    initial database creation when the schema source is an sql file and may be used
460 >    to provide a visual indication of progress in console mode.
461 >
462 > 14. TCustomIBLocalDBSupport: new public property "InOnCreateDB: boolean". This is set
463 >    to true while a new local database is being created and its schema populated.
464 >    Useful in (e.g.) TIBDatabase.OnAfterConnect handler to suppress actions
465 >    when the database is disconnected/connected during the create DB procedure.
466 >
467 > 15. TIBXScript: any User/password parameters found in a CREATE DATABASE statement
468 >    are now always ignored and replaced by the user name and password provided as
469 >    the login parameters for the TIBDatabase referenced from the TIBXScript. The
470 >    IgnoreCreateDatabase property still applies and the CREATE DATABASE statement is
471 >    completely ignored if this property is true.
472 >
473 > 16. Code tidyup in IBTreeView: Node properties initialisation moved from TIBTreeView.AddNodes
474 >    to TIBTreeView.Added. An OnAddition event handler is no longer needed to initialise
475 >    ImageIndex and SelectImageIndex values on AddNode.
476 >
477 > 17. TIBDatabase.Attachment and TIBXServicesConnection.ServicesIntf properties are now
478 >    read/write. This should enabled (e.g.) multiple instances of TIBDatabase to share
479 >    the same database connection.
480 >
481 > 18. TIBDataSet and TIBQuery now support the TDataSet "Filter" property.
482 >    if provided, this should be an conditional SQL expression suitable for
483 >    including in an SQL Select statement "where" clause. If non-empty and the
484 >    "Filtered" property is true then the SQL expression provided as the value of
485 >    the "Filter" property is "ANDed" with any existing condition statement
486 >    in the SQL statement's "Where" clause.
487 >
488 >    If the "Filter" property is set at run time, the "Filtered" property is true
489 >    and the dataset is already open, then the dataset is closed and re-opened automatically.
490 >
491 >    The "Filter" condition may include IBX style parameters. In which case, their
492 >    value must be set by the dataset's "OnBeforeOpen" event handler.
493 >
494 >    This is a public property for TIBDataSet and TIBQuery query and intended for
495 >    use at run time.
496 >
497 >    Note: The property is a published property of TIBTable. The TIBTable functionality
498 >    is unaffected by this change.
499 >
500 > IBX Change Log  version (2.3-2) Wed, 05 Dec 2018 12:19:23 +0000
501 >
502 > 1. Remove need to check for IsMultiThread by providing access to GUI timers via
503 >   IBGUIInterface. Note: master/detail delay timer does not apply to console
504 >   mode apps.
505 >
506 > 2. TIBCustomDataSet: SQLParser ignored if it does not contain a valid select
507 >   statement. This avoids problems if "Execute Block" is used as the Query.
508 >
509 > 3. IBSQLParser now uses the common SQL tokeniser from fbintf. This replaces the
510 >   internal SQL tokeniser routines.
511 >
512 > 4. IBSQLParser: new property NotaSelectStmt. Set to true if SQL fails to parse
513 >   as a select statement, with or without CTEs.
514 >
515 > 5. IBSQLParser: parser now recognises the "ROWS" clause.
516 >
517 > 6. TIBXScript now uses the common SQL tokeniser from fbintf. This replaces the
518 >   internal SQL tokeniser routines.
519 >
520 > 7.  Fix error in TIBXScript processing of "set" statements. This avoids exceptions
521 >    being raised for valid set statements processed by a data formatter.
522 >
523 > 8. New published property for TIBDatabase and TIBXServicesConnection. This is
524 >   FirebirdLibraryPathName: string. If not empty it is used to explicitly specify
525 >   the path of the Firebird Library used by the database/services connection.
526 >
527 > 9. New read only public property for TIBDatabase and TIBXServicesConnection. This
528 >   is FirebirdAPI and returns the IFirebirdAPI interface used by the database/
529 >   services connection.
530 >
531 > 10.SQL Property editors now quote parameter names if "Quote identifier" is selected
532 >   or param name is not a valid SQL identifier.
533 >
534 > 11. IBLookupComboEditBox: In Lazarus 2.0, TDBLookupComboBox takes a more restrictive
535 >    view of whether the text box should be editable when no DataSource is specified.
536 >    TIBLookupComboEditBox has been updated to workaround this problem. As long as
537 >    ReadOnly is false, the text box is editable when no DataSource is specified.
538 >
539 > 12. AllowUseOfFBLIB is now set to "true" at design time. This is to allow use of
540 >    the FBLIB environment variable. If you do not want to permit this then you
541 >    must modify the Register procedure in the design/IBDBReg.pas unit to remove
542 >    this setting.
543 >
544 > IBX Change Log  version                 (2.3-1) Thu, 25 Oct 2018 14:39:45 +0100
545 >
546 > 1. IBCustomDataset: replace deprecated function ValidUTF8String with call to
547 >   Utf8EscapeControlChars
548 >
549 > IBX Change Log  version                (2.3-0) Mon, 16 Apr 2018 09:48:06 +0100
550 >
551 > IMPORTANT: the source code tree has been re-organised for IBX 2.3. Please remove
552 > all previous copies of the IBX source code tree before installing this release.
553 >
554 > The IBX packages used by most users have not changed, with one exception. The
555 > IBServices unit has been moved to the package iblegacyServices.lpk. To continue
556 > to use the IBServices unit in your applications, please add the iblegacyServices
557 > to the list of dependencies. To do this, open the Project Inspector and select
558 > Add->New Requirement and select "ibLegacyServices" from the list of available
559 > packages.
560 >
561 > 1. New unit IBXServices. The IBXServices unit is a re-architectured update of
562 >   the IBServices unit providing what is intended to be a clearer and easier to
563 >   use set of IB Services components. See Chapter 10 of the IBX User Guide for
564 >   more information and the guide to "Firebird Service Management Using IBX".
565 >   As indicated above, the legacy services components are still available and
566 >   provided in a separate package. There is no need to update working applications
567 >   using the older versions except for an additional package dependency.
568 >
569 > 2. The IBX packages and source code tree have been re-organised in an attempt to
570 >   finally get rid of the "duplicate ppu" warnings. This re-organisation should
571 >   not affect existing users. Section 2.3 of the IBX User Guide describes the
572 >   new set of IBX packages.
573 >
574 > 3. The ibx/examples/DBAdmin and the ibx/examples/services example have been
575 >   updated to use the new Services API components.
576 >
577 > 4. The iblocal package has been updated to use the new Services API components.
578 >
579 > 5. procedure SetAutoAdmin; in the new IBX Services this method is now a member of
580 >   TIBXSecurityService. It had been wrongly classified in the previous version
581 >   as a per database configuration item. It is global to a server and hence
582 >   correctly positioned as part of the Security Package. In the DBAdmin example,
583 >   the setting has moved to the mappings page.
584 >
585 > 6. TIBXScript: IgnoreCreateDatabase added. If true then CREATE DATABASE statements
586 >   are ignored.
587 >
588 > 7. TIBDatabase: DropDatabase now ensures that all transactions have been properly
589 >   closed before the database is dropped. Before and After Disconnect event handlers
590 >   are also fired.
591 >
592 > 8. TIBTransaction: OnStartTransaction event now fires every time the transaction
593 >   is started and not just the first time.
594 >
595 > 9. IBDataOutput: Use FormatFloat for all performance statistics to avoid platform
596 >   depenendency with comp type.
597 >
598 > 10. IBDataOutput: select query data output is now sent to stdout instead of stderr.
599 >
600 > 11. TIBDatabase: Remove regression. If a user login dialog changes the DatabaseName
601 >    then this is recognised and not ignored.
602 >
603 > 12. TIBDataSet, TIBQuery, TIBTable: additions:
604 >    function GetRowsAffected(var SelectCount, InsertCount, UpdateCount, DeleteCount: integer): boolean;
605 >    function GetPerfStatistics(var stats: TPerfCounters): boolean;
606 >    property EnableStatistics: boolean read FEnableStatistics write SetEnableStatistics;
607 >
608 >    GetRowsAffected returns the affected row counts from the last insert/update/delete
609 >    if EnableStatistics = true then GetPerfStatistics returns the current stats
610 >    counters for the select query. Note: stats accumulate after each fetch from
611 >    the database. To get total query cost after open, call the "Last" method
612 >    and then GetPerfStatistics.
613 >
614 >    See ibx/examples/consolemode for an example of the use of GetPerfStatistics
615 >
616 > 13. TIBExtract: Identity columns DDL. "Start with clause" now correctly encapsulated
617 >    in parenthesises.
618 >
619 > 14. TIBExtract: new published property "AlwaysQuoteIdentifiers". If true then in dialect 3
620 >    SQL identifiers are always delimited by double quotes. If false, then they are
621 >    only delimited if the identifier is a reserved word, contains lower case or special
622 >    characters. Set this property to true to retain previous behaviour.
623 >
624 > 15. Insert SQL Property Editor. In Insert Returning Clause, Identity column names
625 >    are now inserted in double quotes if not Reserved Words or valid SQL Identifiers.
626 >
627 > 16. TIBDataSet, TIBQuery, TIBTable: addition:
628 >       property MasterDetailDelay: integer {defaults to zero}
629 >
630 >    When non-zero and the dataset is a detail table referencing a master table
631 >    through either a MasterSource (TIBTable) or a DataSource (TIBDataSet, TIBQuery)
632 >    then a synchronisation delay is added (in milliseconds) between the master
633 >    row changing and the detail dataset being re-opened. If the master dataset
634 >    is scrolled before the delay expires then the delay is reset. This can be used
635 >    to avoid performance overheads when scrolling through a large master dataset.
636 >
637 >    Note: uses fptimer and hence requires a thread manager. Under Linux the
638 >    chreads unit must be included in your project. TTimer is not used in order
639 >    to avoid an LCL dependency. Requires FPC 3.0.2 or later.
640 >
641 > 17. TIBExtract: User role grants now excluded when etGrantsToUser not specified
642 >    with Extract Option eoDatabase.
643 >
644 > 18. TIBLookupComboEditBox: Workaround added for https://bugs.freepascal.org/view.php?id=33428
645 >    When a deLayoutChanged event is reported on the ListSource dataset, the
646 >    combobox text is updated. This allows a listsource (detail) to be in a Master/Detail
647 >    relationship with the control's datasource (master).
648 >
649 > 19. TIBExtract: Full BigInt value range now supported for Generators/Sequences.
650 >
651 > 20. TIBExtract: Select Procedures (Procedure type 1) now include "SUSPEND;" clause in their
652 >    stubs. Pedantic fix really, as procedures output in dependency order anyway.
653 >
654 > 21. TIBExtract: Package Headers and Package Bodies are now included in the extracted
655 >    DDL (Firebird 3 and later only).
656 >
657 > 22. TIBLookupComboBox Autocomplete Fixes:
658 >    i. Only appended text is now selected after autocomplete.
659 >    ii. Uppercase keys no longer ignored for autocomplete.
660 >    iii. Retain Prefix case is now honoured correctly.
661 >    iv. When a DataSource is assigned, typing after autocomplete now extends prefix
662 >        before autocomplete performed. i.e. behaviour now the same as when
663 >        no DataSource assigned.
664 >
665 > 23. TIBXScript: Single Line Comments starting with '--' are now ignored when occurring
666 >    between SQL statements.
667 >
668 > 24. TIBExtract: New published property CaseSensitiveObjectNames. If false (default) then
669 >    ObjectNames are converted to upper case before matching against metadata object
670 >    names, unless the objectname is delimited by double quotes, in which case, the
671 >    double quotes are removed and the remaining string is used (unmodified) to match
672 >    against the metadata object name.
673 >
674 >    If true then the ObjectName is used as is without modification and matched
675 >    against the metadata object name. No attempt is made to remove double quotes.
676 >
677 > 25. TIBExtract: New Extract Types: etDatabaseTriggers and etDDLTriggers. When used
678 >    with eoTrigger, these extract types can be used to select only Database Triggers,
679 >    or DDL Triggers or both. Ignored when etTable or etTrigger included in Extract Types.
680 >
681 > 26. TIBXScript: If an exception occurs during the processing of a statement, the
682 >    statement separate character is now reset to the default (';').
683 >
684 > 27. TIBDatabase: Reconnect method added and used by TIBXScript for reconnect.
685 >
686 > 28. TIBXScript: Transaction is no longer automatically reactivated immediately processing
687 >    a commit or reconnect statement and instead activated only when next SQL statement
688 >    is executed.
689 >
690 > 29. TIBSQL.HasField should no longer generate and exception when the field does not exist.
691 >
692 > 30. TIBXScript: case insensitive regex now used when matching statements instead of
693 >    converting statement to upper case.
694 >
695 > 31. TIBExtract: metadata comments now supported. New published property
696 >    IncludeMetaDataComments (default true). If true then metadata comments included
697 >    in extracted DDL. New Extract Object member eoComments. This may be used with
698 >    ExtractObject method to list all metadata comments.
699 >
700 > 32. TIBExtract: ListObjectNames method added.
701 >
702 > 33. Updated Database component editor to support additional connection string
703 >    types.
704 >
705 > IBX Change Log  version  (2.2-0) Wed, 28 Feb 2018 10:57:45 +0000
706 >
707 > NOTE: THE LOCATIONS OF SOME OF THE UNIT DIRECTORIES HAS CHANGED FROM IBX 2.1. THIS IS TO
708 > AVOID DUPLICATE PPU WARNINGS. PLEASE REMOVE EARLIER VERSIONS OF IBX BEFORE INSTALLING THIS
709 > RELEASE.
710 >
711 > NOTE: THE DBADMIN DEMO REQUIRES THAT THE MemDSLaz PACKAGE IS INSTALLED IN THE LAZARUS IDE.
712 >
713 > 1. IBExtract: Identity columns - add additional check for null column for generator name.
714 >
715 > 2. IBCustomDataSet: Insert and Modify (Update) queries now recognise and process SQL RETURNING clauses.
716 >   The main use for this is for Firebird 3 Identity columns (see IBXDocumentation 6.6.8 for further
717 >   information). However, this is also a very useful mechanism for returning updated computed by
718 >   column values. Values returned as a result of executing an Insert or Update statement
719 >   replace existing values in the current row for each corresponding column.
720 >
721 >   Previously, if a dataset's select query included read only (computed by) fields then
722 >   an automatic row refresh was performed after an insert or update query had been processed,
723 >   irrespective of the setting of the "ForcedUpdates" property. This has changed such
724 >   that an automatic refresh is no longer performed if an insert or update query contains
725 >   a returning clause that updates one or more fields on the current row. A full row
726 >   refresh is only performed if (a) ForcedRefresh is true or (b) the query does not return any
727 >   field values and the select query contains read only fields. Use of Insert/update
728 >   returning should be significantly more efficient than executing a refresh query.
729 >
730 >   This behaviour change is intended to be backwards compatible and there should be no need to change
731 >   existing programs, other than to improve performance by using the new capability.
732 >
733 > 3. IBCustomDataSet: DELETE...RETURNING queries are now also recognised. However, as
734 >   they are called when the dataset row is being deleted, there is no value in
735 >   updating the current record from the query result. Instead, a new event handler
736 >   "OnDeleteReturning" is provided. If a DELETE...RETURNING query is execute and
737 >   an OnDeleteReturning event handler is provided then it is called with the IResults returned
738 >   by the query. The event handler can then interrogate the query results and
739 >   perform whatever action is necessary. For example to confirm, to the user,
740 >   the deletion of a row with the returned values.
741 >
742 > 4. TIBTable: generated Insert and Update SQL now include a RETURNING clause for
743 >   any Computed By or Identity Columns. The IBTables example has been updated to
744 >   illustrate the computation of the employee Full Name on update.
745 >
746 > 5. TIBTable: The GeneratorField property is now published.
747 >
748 > 6. The InsertSQL property editor now shows Firebird 3 Identity columns separate from the Field List.
749 >   When InsertSQL is generated, the Identity columns are not included in the list of values to
750 >   be inserted. A RETURNING clause is added to the insert statement to return the value of
751 >   each Identity column after the insert is executed.
752 >
753 > 7. The Modify Property Editor now generates Update SQL with Computed By fields in Update..Returning clause.
754 >   Similarly Insert Property Editor now generates Insert SQL with Computed By fields in
755 >   Insert..Returning clause.
756 >
757 > 8. TIBGenerator: small performance improvement by not preparing query each time
758 >   a new value is generated.
759 >
760 > 9. TIBSQL: Free resources when transaction changed - ensures new transaction is used.
761 >
762 > 10. Property editors will now sync table name to a System Table when "Include System
763 >    Tables" is selected and the query is for a System Table.
764 >
765 > 11. Minor Performance improvement to handling of Date/Time types in IBX datasets. Field
766 >    values are no longer converted to milliseconds from TDateTime and then back again
767 >    to TDateTime (the conversion to milliseconds is the default TDataset approach).
768 >
769 > 12. Property Editors handling of Stored Procedures.
770 >    * Select and Refresh: only show a list of stored procedures that return multiple rows (proc type 1) and
771 >      which have a non-empty list of output parameters (i.e. stored procedures that may be used in a select
772 >      query).
773 >    * Modify and Insert: only show a list of stored procedures that return at most a singleton row (proc type 2).
774 >
775 > 13. IBStoredProc: Now supports Firebird 3 Package Names. A new published property PackageName
776 >    can be used to select a package. If non-empty, the stored procedure name is
777 >    expected to be a stored procedure defined in the specified package and the
778 >    generated SQL will be as required for a stored procedure located in a package.
779 >
780 > 14. Select, Refresh, Insert, Modify, Delete and TIBSQL SQL Property Editors now include
781 >    a "Package Name" drop down box to allow selection of a Firebird 3 Package from
782 >    which a stored procedure can be selected. With no package name selected, non-package
783 >    stored procedures are listed.
784 >
785 > 15. TIBXScript: turn off database login prompt when reconnecting - this avoids prompting
786 >    for password on reconnect.
787 >
788 > 16. TIBDatabase: use IAttachment for connection default character set id, code page
789 >    and character set name.
790 >
791 > 17. TIBDatabaseInfo: cache ODS Version information on first request in order to minimise
792 >    DB info lookups"
793 >
794 > 18. IBExtract: now supports DDL Triggers and Grants to DDL objects.
795 >
796 > 19. Add a property Editor for TIBUpdate.RefreshSQL.
797 >
798 > 20. IBUpdate: Ignore non-data (e.g. calculated) fields when assembling list of input
799 >    parameters. This stops an exception being raised when the field cannot be
800 >    located in the record buffer.
801 >
802 > 21. Property Editors now automatically include System Tables when opened and when the query table
803 >    is a System Table.
804 >
805 > 22. IBServices: SQRB and SRB buffers are now reset when service query throws an exception.
806 >    This avoids errors due to a stale SQRB or SRB being used for the next query.
807 >
808 > 23. IBServices: Service attach parameters now include "expected_db". This is used to
809 >    add the SPB item isc_spb_expected_db. This names a database using
810 >    an alternative Security Database (FB3 onwards) and allows (e.g. backup/restore) using such a
811 >    database. examples/services re-written to illustrate use of "expected_db".
812 >
813 > 24. IBServices: TIBControlAndQueryService.WriteNextChunk no longer ignores isc_info_svc_timeout.
814 >    This avoids truncated backups when the server returns a timeout (busy) response.
815 >
816 > 25. TIBDatabase: isc_dpb_page_size now supported as a database parameter when using TIBDatabase.CreateDatabase.
817 >
818 > 26. TIBDatabase: DatabaseName property may now be prefixed by $TEMP$ or $DATADIR$ for local
819 >    databasenames. These are respectively expanded to the local system's temp directory
820 >    (including trailing delimiter) or to a prescribed data directory (including
821 >    trailing delimiter). Under Unix systems the data directory is a hidden directory
822 >    in the user's home directory. The hidden directory name is either the string returned
823 >    from the SysUtils "Vendor Name" or "IBX" if empty. In either case prefixed by a '.'.
824 >    Under Windows, the directory is the same as the Data Directory as decribed
825 >    above but instead prefixed by the User's application data path. These may be
826 >    used to improve application portability for Personal Databases.
827 >
828 > 27. TIBTable: FieldDefs property is no longer published. Due to the use of TIBFieldDef
829 >    this has not worked for a long time and is not useful either. FieldDefs should be
830 >    managed using the Fields Editor as with any other dataset. To access the fields
831 >    editor for a TIBTable component, double click on the component. The fields editor
832 >    is then displayed.
833 >
834 > 28. TIBDatabaseInfo: new properties/function
835 >     * DateDBCreated (returns date/time database created)
836 >     * TransactionCount (returns no. of active transactions)
837 >     * GetDatabasePage(PageNo: integer) (returns contents of specified database page - SYSDBA only).
838 >     * PagesFree (Firebird 3 or later)
839 >     * PagesUsed (Firebird 3 or later)
840 >     * Encrypted (returns true if database encrypted. (Firebird 3.0.3 or later only)
841 >     * EncryptionKeyName (returns the name of the encryption key if any (Firebird 3.0.3 or later only)
842 >
843 > 29. IBServices classes now provided the decoded release number in the (array) property ServerVersionNo.
844 >
845 > 30. TIBSecurityService now supports display/modification of the User Admin Role (Firebird 2.5 and later).
846 >
847 > 31. TIBConfigService now has a procedure SetAutoAdmin(Value: boolean) to enable/disable
848 >    the automtic mapping of privileged OS users to the RDB$ADMIN role (Firebird 2.5 and later).
849 >
850 > 32. TIBBackupService: New Option - NoDBTriggers equivalent to -nodbtriggers switch introduced
851 >    in the gbak utility at V.2.1 to prevent database-level and transaction-level triggers from
852 >    firing during backup and restore.
853 >
854 > 33. Both TIBBackupService and TIBRestoreService now support backup/restore statistics options
855 >    for verbose output using the new property "StatisticsRequested".
856 >    see https://firebirdsql.org/file/documentation/release_notes/html/en/2_5/rnfb25-util-gbak.html#rnfb25-util-gbakstats
857 >
858 > 34. TIBRestoreService: now supports new options RestoreMetaDataOnly (Firebird 2.5 and later).
859 >
860 > 35. TIBOnlineValidationService component added to the IBServices and the "Firebird Admin"
861 >    palette. This uses the online validation feature added in Firebird 2.5. The
862 >    services's properties enable inclusion/exclusion of tables and indexes using
863 >    regular expressions. See.
864 >    https://firebirdsql.org/file/documentation/release_notes/html/en/2_5/rnfb25-apiods-api.html#rnfb25-apiods-api-onlinevalidation
865 >
866 > 36. IBServices: procedure TIBConfigService.SetNoLinger added to set no linger
867 >    option on a database.
868 >
869 > 37. TIBCustomService: Assign method implemented to allow copying of service login
870 >    context between service API components. "Detach" method now only detaches
871 >    service when last reference to the service interface detaches. Tidy up of
872 >    code for SetActive and Attach methods including password hiding.
873 >
874 > 38. TIBDatabase: new properties: AuthenticationMethod and RemoteProtocol. Read only
875 >    and used to determine the auth method and protocol used for the connection.
876 >
877 > 39. TIBDatabase: ensure that SQLDialect setting is used when creating a database using
878 >    a Create Database Statement generated by IBX.
879 >
880 > 40. All IBServices now have an additional published property "PortNo". This may
881 >    be set to a non-standard port number when necessary. If zero then the default
882 >    port number is used.
883 >
884 > 41: TIBLookupComboeditBox: Ensure dataset updated when change selected with the keyboard
885 >    and not just the mouse.
886 >
887 > 42. TIBCustomDataset: reopen query if already active when a TIBControlLink is added.
888 >
889 > 43. TIBTreeview: new ImageIndexField and SelectedIndexField Property allows the
890 >    image index and selected image index for each node to be set from a database field.
891 >
892 > 44. TIBExtract: new extract type (etGrantsToUser) for use with eoDatabase. If included
893 >    then database schema includes grants to all users. If not present then the
894 >    only user grants included are those to User PUBLIC.
895 >
896 > 45. TIBTreeView: performance improvement. When expanding include both expanded node
897 >    and child nodes in dataset.
898 >
899 >
900 > IBX Change Log  version                            (2.1-0) Fri, 15 Dec 2017 12:20:11 +0000
901 >
902 > 1. IBCustomDataset: Minor change of PChar to PByte for compatibility with fbintf
903 >   changes.
904 >
905 > 2. IBCustomDataset: Fixed use of incorrect datasize in TIBStringField.SetAsString.
906 >   Bug could result in truncated multi-byte character set values.
907 >
908 > 3. Changes consequential on moving fbintf character set utility functions from
909 >   IFirebirdAPI to IAttachment.
910 >
911 > 4. Avoid "Object is nil" error when opening a database with DefaultSystemCodePage = true
912 >
913 > 5. IBLookupComboEditBox: avoid race condition when autocompleting text that occasionally
914 >   results in autocomplete ignoring prefix text.
915 >
916 > 6. IBLookupComboEditBox: Ensure that cursor is not reset to start of text when
917 >   entering a new name into the text box.
918 >
919 > 7. IBCustomDataset: ensure that TIBStringField uses the field size reported by
920 >   Firebird rather than recomputing it.
921 >
922 > 8. Property Editor positioning tidy up: All IBX Property editors should now be
923 >   screen centre. Previously some were "poDesigned" which may be inappropriate
924 >   for multi monitor desktops.
925 >
926 > 10. TIBTreeView.FindNode: protect against error if zero length path or empty tree node.
927 >
928 > 11. TIBTransaction: On Force Disconnect do not raise an exception when problem ending
929 >    a transaction and always reset the object.
930 >
931 > 12. TIBQuery tidyup: remove unnecessary call to GetAffectedRows.
932 >
933 > 13. TIBXScript: Allow for override of database filename in Create Database statements.
934 >
935 > 14. IBLocaldb: Support initialisation of the database from an SQL script in addition
936 >    to a gbak format archive.
937 >
938 > 15. IBLocaldb: fix problem that stopped the OnSharedDataDir event from being recognised.
939 >
940 > 16. IBLocaldb: Drop database if error creating an empty database.
941 >
942 > 17. TIBTreeView: improve performance when selecting node - avoid refreshing dataset
943 >    unless selected node not in current dataset.
944 >
945 > 18. IBServices: SetDBParams method moved from TCustomIBLocalDBSupport (in IBLocalDB package)
946 >    to TIBCustomService, and IBlocalDB code tidy up.
947 >
948 > 19. IBTreeView: Initialise TIBTreeNode KeyValue to null to avoid unpredictable
949 >    behaviour due to uninitialised variable.
950 >
951 > 20. IBServices: Correct encoding of isc_spb_prp_write_mode in TIBConfigService from
952 >    integer to byte. Ditto isc_spb_prp_reserve_space and isc_spb_prp_access_mode.
953 >
954 > 21. IBSQL: When Database changed ensure that all resources are freed.
955 >
956 > 22. IBCustomDataset: When database changed ensure that queries an unprepared.
957 >
958 > 23. SQL Property Editors now use SynEdit with SQL Highlighter. New features include:
959 >    * Line Wrap on SQL Token boundaries (on user command)
960 >    * auto-complete table names in drop down list of table names
961 >    * Double click on tablename or field name adds to SQL text
962 >
963 > 24. IBDataOutput: print statistics using float (%f) format instead of decimal (%d).
964 >
965 > 25. IBTreeView: Call to FindNode: param type change from "array of Variant" to
966 >    TVariantArray. Seems to avoid memory corruption in Windows (probably a
967 >    workaround for a problem in fpc 3.0.4 win64).
968 >
969 > 26. IBDatabaseInfo: Code tidy up. Add check for database not assigned or not open.
970 >
971 > 27. IBDatabaseInfo: Remove memory leak when accessing database operation counts.
972 >
973 > IBX Change Log  version                   (2.0-2) Fri, 24 Feb 2017 12:17:53 +0000
974 >
975 > 1. TIBDatabase.CreateDatabase: extract full DB Name from SQL using reg ex in order to
976 >   include remote system name.
977 >
978 > 2. TIBExtract: No longer include comment header and COMMIT statement for empty
979 >   tables when data included in output.
980 >
981 > 3. Profiling: IBSQL now has conditional compilation flags to enable query performance
982 >   and timing information to be written to stdout. This may be used to locate
983 >   performance bottlenecks.
984 >
985 > 4. SQLParser: only call "OnChanging" event handler when value is different.
986 >
987 > 5. IBDynamicGrid: Update handling of navigation keys for a TDateEdit
988 >
989 > 6. IBCustomDataset: Set internalunprepared flag when transaction ends. This ensures
990 >   that BindFields is called when the query is next activated. Avoids FieldName
991 >   not found error.
992 >
993 > 7. IBUpdate: This is a new IBX component similar to TIBUpdateSQL. It is more general
994 >   purpose and allows the programmer to define any action they want for Update, Insert
995 >   or Delete. This may be complex SQL (similar to a Trigger), application specific
996 >   filtering of updates, or use of statements such as Grant or Revoke instead of
997 >   normal DML. See User Manual for more information.
998 >
999 > IBX Change Log  version                  (2.0-1) Mon, 09 Jan 2017 15:31:49 +0000
1000 >
1001 > 1. TIBEvents: Fix uninitialised variable that could result in lost events.
1002 >
1003 > 2. TIBExtract: Added support for FB3 "USAGE" privilege.
1004 >
1005 > 3. TIBExtract: data formatted as Charset set "octets" is now output using
1006 >   hexadecimal notation.
1007 >
1008 > 4. TIBExtract: Binary Blobs and array data can now be embedded in INSERT statements
1009 >   using a simple XML format.
1010 >
1011 > 5. TIBExtract: extract of individual Triggers and Stored Procedures can now include
1012 >   grants to these objects.
1013 >
1014 > 6. TIBExtract: Stored Procedures and Views output in dependency order to avoid
1015 >   dependency problems restoring complex databases.
1016 >
1017 > 7. TIBXScript: This component has been restructured to allow for the processing of
1018 >   embedded XML in INSERT statements and to support interactive sources in addition
1019 >   to non-interactive data sources such as files.
1020 >
1021 > 8. TIBXScript: CREATE DATABASE, DROP DATABASE, CONNECT statements are now supported.
1022 >
1023 > 9. TIBXScript: ISQL compatiable Set statements are now supported:
1024 >   SET SQL DIALECT
1025 >   SET TERM
1026 >   SET AUTODDL
1027 >   SET BAIL
1028 >   SET ECHO
1029 >   SET COUNT
1030 >   SET STATS
1031 >   SET NAMES <character set>
1032 >
1033 > 10. IBVersion unit added to hold current IBX Version Number information.
1034 >
1035 > 11. TIBExtract: Use character rather than byte length for VarChar procedure arguments.,
1036 >    and domain definitions.
1037 >
1038 > 12. TIBExtract: Triggers now use SQL2003 syntax and database and transaction triggers
1039 >    fully supported.
1040 >
1041 > 13. TIBExtract: when a database dump includes data, the generator values are now also set.
1042 >
1043 > 14: IBSQLEdit: Unit LCLPlatformDef added to uses clauses for lazarus 1.7 and later.
1044 >
1045 > IBX Change Log  version     (2.0-0) Tue, 06 Dec 2016 10:33:44 +0000
1046 >
1047 > See also doc/IBX4LazarusGuide.pdf for important information on
1048 > upgrading to IBX2.
1049 >
1050 > 1. Size property of TIBStringField is now the width in characters of the field
1051 >   and not the byte length. This applies only to multi-byte character sets such
1052 >   as UTF8. The original approach aligned with TStringField. However, the TStringField
1053 >   code is not recognised as a bug and hence this change to align the behaviour.
1054 >   The TStringField change is expected in fpc 3.2.0.
1055 >
1056 > 2. A new property AutoFieldSize: boolean has been added to TIBStringField. When
1057 >   true (default) then Size property value saved in the lfm is ignored. Size is
1058 >   always set from the dynamic information read from the database. It is unclear
1059 >   why anyone would want to override this and set Size to false.
1060 >
1061 > 3. ibxscript: should now handle correctly a Case..End statement within a procedure
1062 >   block.
1063 >
1064 > 4. IBDatabase: new property - CreateIfNotExists. If true and database does not
1065 >   exist when an attempt is made to connect to it (run time only) then an attempt
1066 >   is made to create the database.
1067 >
1068 > 5. IBDatabase: new event - OnCreateDatabase. This event is called after a database
1069 >   has been successfully created as a result of a call to CreateDatabase or when
1070 >   creating a database after it was found not to exist.
1071 >
1072 > 6.  DBControlGrid: a race condition could result in the wrong row image being
1073 >    written to the cache. This has been avoided by a trip round the message
1074 >    loop before rendering the row image.
1075 >
1076 > 7.  DBControlGrid: It is strongly recommended not to open the source DataSet for
1077 >    a DBControlGrid during a Form's "OnShow" event handler. Under GTK2 this is
1078 >    known to risk corrupt rendering of row images when the control is first
1079 >    displayed. If necessary use "Application.QueueAsyncCall" to delay opening
1080 >    of the dataset (see DBControlGrid examples) until the Form's Window has been created.
1081 >
1082 > 8.  DBControlGrid & IBDynamicGrid: Navigation keys should now work correctly with
1083 >    a TDateEdit control located on an editor panel.
1084 >
1085 > 9.  TIBExtract: brought up-to-date plus many bug fixes.
1086 >
1087 > 10. DBControlGrid: Removed memory leak when updating rows.
1088 >
1089 > 11. TIBCMLocalDBSupport: fixed invalid free on upgrade.
1090 >
1091 > IBX Change Log  version                                           (1.4-3) Thu, 22 Sep 2016 18:10:15 +0100
1092 >
1093 > 1. IBCustomDataset: When calling SetCodePage, no longer request transliteration
1094 >   when target codepage is CP_NONE. This is a workaround for
1095 >   http://bugs.freepascal.org/view.php?id=30622.
1096 >
1097 > 2. DBLog option removed from TIBStatisticalService - not supported by server
1098 >   since Firebird 1.5.
1099 >
1100 > 3. ibxscript: An error is no longer generated for "on commit preserve rows" or
1101 >   similar.
1102 >
1103 > 4. IBCodePage: updated mapping between codepages and character id.
1104 >
1105 > 5. ftWideString and ftWideMemo withdrawn. There is no UTF16 character set in
1106 >   Firebird. Character sets with a char width of two are not UTF16.
1107 >
1108 > 6. Strings received from the database are now always transliterated into UTF8
1109 >   regardless of the database character set or connection character set. This
1110 >   is for compatibility with the LCL.
1111 >
1112 > IBX Change Log  version  (1.4-2) Thu, 22 Sep 2016 15:25:27 +0100
1113 >
1114 > 1. IBBlob: Defer reading of blob until read method called. This avoids having to
1115 >   read in an entire blob just to get the size of the blob. General performance
1116 >   improvement when opening datasets containing blobs.
1117 >
1118 > 2. Clearing a  Blob now sets the corresponding field's modified flag.
1119 >
1120 > 3. IBLookupCombo: When not performing auto-complete, original query sort order
1121 >   is now used.
1122 >
1123 > 4. IBDynamicGrid: Add OnSelectEditor event. Allows editor panel to be dynamically
1124 >   determined.
1125 >
1126 > 5. IBDynamicGrid: Recompute column widths after dataset closed and re-opened.
1127 >
1128 > 6. IBLookupCombo: LazUTF8 added to uses clause to avoid compilation problems post
1129 >   lazarus 1.6.0
1130 >
1131 > 7. IBControls. Removed "runtime" from list of paths to avoid "multiple packages"
1132 >   compilation error.
1133 >
1134 > IBX Change Log  version                                 (1.4-1) Tue, 17 May 2016 09:14:51 +0100
1135 >
1136 > 1. No character set specified for connection: when a text blob is retrieved, the
1137 >  character set is determined by looking up the native character set using then
1138 >  Firebird API. Otherwise a text mode blob is assumed to have the same character
1139 >  set as the connection.
1140 >
1141 > 2. TIBGUIInterface: this is an internal interface. Minor type changes to allow
1142 >   for Login Dialog returing a change to the database path.
1143 >
1144 > 3. Design Time Database and Server login Dialogs now allow the Database Name/Server Name
1145 >   to be changed from that given in the TIBDatabase/TIBServer component and for the
1146 >   entered value to be saved on a project specific basis (design time only).
1147 >
1148 > 4. IBDynamicGrid: TDBLookupCellEditor now compares its DataFieldName with the
1149 >   column fieldname. If they are the same then it is acts as a look up for the KeyValue
1150 >   Otherwise, it sets the column text to the selected ListField Value.
1151 >
1152 > 5. IBDynamicGrid: Only visible columns are now taken into account When recalculating
1153 >   column width.
1154 >
1155 > 6. IBLookupComboEditBox: Fix error with autocomplete query when a RelationName is given
1156 >   and a case insensitive search is requested.
1157 >
1158 > 7. IBDynamicGrid: No longer ignores notifications removing Column Totals controls
1159 >   or column ListSource.
1160 >
1161 > 8. IBQuery: no longer performs unnecessary refresh of SQL Text (and hence avoids an
1162 >   unprepare) when closing and the text has not changed.
1163 >
1164 > 9. IBSQL: Base the cursor name on a GUID instead of a hexstr version of the class pointer.
1165 >   Less likely to cause a cursor re-use error on Windows.
1166 >
1167 > 10.SV5IPC: include workaround for OSX. FPC 3.0.0 has broken ipc module for darwin.
1168 >   Expected to be fixed in 3.0.2. Hence workaround only applies to 3.0.0.
1169 >
1170 > 11. TIBTreeView: Guard against nil destination on record changed
1171 >
1172 > 12. AnsiString Code page support: TIBStringField.AsString and TIBMemoField.AsString now return a
1173 >    string type with the code page set to reflect the returned field encoding after
1174 >    Firebird driver transliteration, if any.  FPC 3.0.0 onwards only. Behaviour unchanged for
1175 >    earlier versions.
1176 >
1177 > 13. AnsiString Code page support: Assigning to TIBStringField.AsString and TIBMemoField.AsString
1178 >    will now result in transliteration to the code page specified for the Firebird driver
1179 >    if the assigned string has a different code page. FPC 3.0.0 onwards only.
1180 >
1181 > 14. TIBDatabase: new property UseDefaultSystemCodePage. When set any lc_ctype parameter
1182 >    is ignored and the lc_ctype value, when the database is opened, is set to align with
1183 >    the DefaultSystemCodePage (FPC 3.0.0 onwards). Normally, this is what you want and should ensure
1184 >    platform independence. Note: this applies to FPC 3.0.0 and earlier versions. Pre FPC
1185 >    3.0.0, when this property is true, the lc_ctype is UTF8 except under windows when
1186 >    the GETACP is used to determine the Windows code page.
1187 >
1188 > 15. TIBDatabase: new property DefaultCharSetName. This is the Firebird character set
1189 >    name used as the lc_ctype when the database was opened. Only valid while the
1190 >    Database is connected.
1191 >
1192 > 16. TIBDatabase: new property DefaultCodePage (FPC >=3.0.0 only). This is the codepage
1193 >    id that corresponds to the DefaultCharSetName.
1194 >
1195 > IBX Change Log  version                          (1.4-0) Mon, 15 Feb 2016 14:44:24 +0000
1196 >
1197 > 1. Unix: If Firebird Embedded Server shared object is loaded and a local database
1198 >   path is given and database attach fails due to access permission issues on the
1199 >   temp directory or security database, then the attach is retried with "localhost:"
1200 >   prefixing the databasename. This should avoid problems when the database has to
1201 >   be accessed by a local (e.g. classic) server and libfbembed is used.
1202 >
1203 > 2. Windows: revised search order for Firebird DLL:
1204 >     i.   The Firebird Embedded Server in the application Directory.
1205 >     ii.  If the FIREBIRD environment variable is set then the directory this
1206 >          points to is searched for the FB Client DLL and then then underlying
1207 >          "bin" directory.
1208 >     iii. Registry Key HKEY_LOCAL_MACHINE\SOFTWARE\Firebird Project\Firebird Server\Instances
1209 >          is used to locate the Firebird installation directory and the underlying
1210 >          "bin" directory is searched for the FB Client DLL.
1211 >     iv.  The Default installation directories C:\Program Files\Firebird\Firebird_2_x
1212 >          are searched for the FB Client DLL.
1213 >     v.   The PATH Environment variable is used to search for the FB Client DLL.
1214 >     vi.  Finally the  PATH Environment variable is used to search for IBASE.DLL.
1215 >
1216 > 3. New Component: TIBXScript. This is an ISQL compatible SQL script execution engine.
1217 >   See doc/readme.scriptengine and example applications.
1218 >
1219 > 4. New Component: TIBlocalDBSupport. This is a TIBDatabase support component intended to
1220 >   simplify the use of the embedded firebird server on both Linux and Windows platforms.
1221 >   See dpc/readme.localdatabase and example applications.
1222 >
1223 > 5. IBDynamicGrid: Reordering on column header click should now also work for
1224 >   dynamic columns.
1225 >
1226 > 6. ISQLMonitor: (Windows only). Mutex added to TMultilockGate to avoid race condition
1227 >   between incrementing/decrementing the lock count and signalling the event.
1228 >
1229 > IBX Change Log  version           (1.3-2) Tue, 26 Jan 2016 14:39:54 +0000
1230 >
1231 > 1.3.2 was never formally released and only made available as beta copies.
1232 >
1233 > 1. DBControlGrid,IBDynamicGrid: Ignore down arrow and up arrow in TCustomMemo
1234 >
1235 > 2. IBDynamicGrid: Now deals correctly with a single column grid which has no indicator and autosize column
1236 >
1237 > 3. IBLookupComboEditBox: reset timer on each key press - avoids timer going off too early
1238 >
1239 > 4. IBDynamicGrid: Call event OnUpdateSortOrder even when aliasname not found in dataset
1240 >   i.e. when it is a calculated field
1241 >
1242 > 5. IBDynamicGrid: Fix problem selecting a different row when expanded row at end of grid.
1243 >   This problem was due to a race condition between recalculating row heights and
1244 >   determining which row was selected by the mouse click. The row height calculation
1245 >   is now deferred by an extra trip round the message loop allowing the row to
1246 >   be always calculated on the current grid layout rather than risking it being
1247 >   calculated on the grid layout after the expanded row has been shrunk.
1248 >
1249 > 6. IBLookupComboEditBox: avoid race condition between cm_killfocus and cm_exit on
1250 >   Windows.
1251 >
1252 > 7. TIBStringField: Now has two new public properties: CharacterSetName: string and CharacterSetSize: integer;
1253 >   These properties allow the (Firebird) character set name for the field and the max number of bytes per character
1254 >   to be determined at runtime. See doc/readme.charactersets.html.
1255 >
1256 > 8. TIBWideStringField: This is a new field type with the same additional public properties as above and subclassed from
1257 >   TWideStringField. This field type is used with the character size reported by Firebird is two. See doc/readme.charactersets.html.
1258 >
1259 > 9. TIBMemoField and TIBWideMemoField: new field types with the same additional public properties as above and subclassed from
1260 >   TMemoField and TWideMemoField respectively. These field types are used with Blob subtype 1 and a characterset size of
1261 >   1, 3 or 4 (TIBMemoField) or 2 (TIBWideMemoField). See doc/readme.charactersets.html.
1262 >
1263 >   Both also have a new published property "DisplayTextAsClassName". If false (default) the displaytext is generated
1264 >   from the blob text by truncating the string to the displaywidth (in characters not bytes). A displaywidth of zero
1265 >   implies no truncation.
1266 >
1267 > 10. IBLookupComboEditBox: Force autocomplete when EditingDone called and timer active.
1268 >
1269 > 11. IBDynamicGrid: Call DataSet.Append when entering edit mode and dataset empty and not in insert state
1270 >   (avoids "Not in Edit Mode" error).
1271 >
1272 > 12. IBDynamicGrid: Correctly resize grid when one column width plus indicator.
1273 >
1274 > 13. IBDynamicGrid: Ensure Editor Panel has focus when shown - avoids Windows API calling
1275 >    DBGrid.DoExit on subsequent mouse click (e.g. on child control such as a tabbed page control.
1276 >
1277 > 14. IBDynamicGrid: ignore up, down tab and return when editorpanel open and focus in a TCustomGrid descendent.
1278 >
1279 > 15. DBControlGrid: Stop flashing grid when dataset closed and then re-opened while DisabledControls
1280 >
1281 > 16. IBQuery: Bug fixed that prevented SQL being set programmatically once the Parser had been invoked.
1282 >
1283 > 17. IBCustomDataSet: On close, parser is now freed and Select SQL reverts to value before DataSet Opened.
1284 >
1285 > IBX Change Log  version        (1.3-1) Sat, 18 Jul 2015 13:30:50 +0100
1286 >
1287 > 1.   OnCloseUp Event Handler added to TDBLookupProperties
1288 >
1289 > 2.   IBDynamicGrid: Call to OnEditorPanelHide is now last editor hide action - avoids
1290 >     problem with row size when exception is called.
1291 >
1292 > 3.   IBLookupComboEditBox: Force pending autocomplete on combobox exit.
1293 >
1294 > 4.   IBDynamicGrid and DBControlGrid: Keyhandler now ignores up, down, escape and return keys if
1295 >     in a TCustomComboBox and ignores return key if in a TCustomMemo
1296 >
1297 > 5.   IBLookupComboEditBox: Ensure that KeyValue is set correctly when full text
1298 >     keyed in i.e. when autocomplete not performed
1299 >
1300 > 6.   Cleanup of "Uses" clauses and add console mode support. IBX should now support
1301 >     console mode applications with all LCL required functions (builtin dialogs and
1302 >     cursor management) centralised in the  IBDialogs unit. As long as "IBDialogs" is
1303 >     not included in your project, IBX should compile and link with a console mode program.
1304 >     See consolemode example and its "readme"for further guidence. DO NOT add the ibexpress package to a
1305 >     console mode application or the IDE will automatically assume that your
1306 >     application is GUI based. Instead, you should include the ibexpressconsolemode package.
1307 >
1308 >     IMPORTANT NOTE: IBDialogs must be included in GUI applications in order
1309 >     to use the built in dialogs and cursor management. IBDialogs is
1310 >     included by default if "ibexpress" is in your project source's "uses" clause.
1311 >     This should be the case for all projects created through the IDE. This is why
1312 >     you do not want to add the ibexpress package to console mode applications. The
1313 >     ibexpressconsolemode package has been created to allow console mode programs
1314 >     to avoid adding LCL dependencies when using IBX, while still having the
1315 >     unit search paths set up correctly.
1316 >
1317 >     Existing users should check to ensure that the "ibexpress" unit is included in
1318 >     each project's source file (*.lpr).
1319 >
1320 >     You may find that in order for the IDE to recognise that ibexpressconsolemode
1321 >     exists, you have to first open the package in the IDE and then close it. This
1322 >     adds it to the most recently accessed packages list. To make it permanently
1323 >     available, add the package name to lazarus' staticpackages.inc file.
1324 >
1325 >         Thanks to Julio Jiménez for suggesting support of console mode.
1326 >
1327 > 7.   SQL Parser can now accept quoted strings that include new lines
1328 >
1329 > 8.   IBDynamicGrid: Lookup Cell Editor - the cursor is now positioned at end
1330 >     of text on start of edit. This is particularly useful when tabbing to a
1331 >     column and then inserting text.
1332 >
1333 > 9.   New Examples provided for IB Services and ISQLMonitor.
1334 >
1335 > 10. Fix error when writing to blob streams that recorded only the last buffer
1336 >    write in the blob stream. In most cases, this did not cause a problem as the
1337 >    IB Blob Stream is written in a single write. However, with the TDBImage, write
1338 >    of a graphic type prefix was lost which caused a problem when the image could
1339 >        not be automatically recognised.
1340 >
1341 > 11. Improve generation of random cursor names in TIBSQL - avoid risk of "cursor
1342 >    already open" errors due to random numbers used for the cursor name being identical.
1343 >
1344 > 12. IBTable: corrected error that could result in an "Index out of bounds" error
1345 >    when opening the table and the Primary Key is the last or only column in the
1346 >    table. Thanks to Rick Hoover for the fix.
1347 >
1348 > 13. Fix TIBDatabase initialisation of lc_ctype under unix. Set to "UTF8" instead
1349 >    of "UTF-8", and update list of available database character sets. Existing
1350 >    users should check the current lc_ctype setting in their applications.
1351 >
1352 > IBX Change Log  version  (1.2-4) Sat, 09 May 2015 12:38:29 +0100
1353 >
1354 > 1.  Firebird Services: avoid List Index error when opening a service with an
1355 >    empty Params property.
1356 >
1357 > 2.  IBControls: Fix problem with new link mechanism introduced in 1.2.3.
1358 >    Link now set up in Loaded method - avoids occasional failure to apply
1359 >    SQL markup on initial open.
1360 >
1361 > 3.  "Employees" example performance improvements when scrolling.
1362 >
1363 > 4.  DBControlGrid: Correctly handle edit panel removal when panel is child control of a
1364 >    TFrame. Force recaching of selected frame to avoid GTK race (results in a
1365 >    random image cached).
1366 >
1367 > 5.  DBControlGrid: Should now react to changes in panel height at run time.
1368 >
1369 > 6.  IBDynamicGrid: Redraws rows below on panel editor hide - avoids blank space at end of grid  
1370 >    even when further rows exist.
1371 >
1372 > 7.  DBControlGrid: DefaultRowHeight is no longer a published property as it should
1373 >    always be derived from panel height and setting this property can cause confusion.
1374 >    Note for existing projects: to avoid a missing property error at run time,
1375 >    each form using the DBControlGrid must be opened, updated and saved in the IDE
1376 >    in order to remove the property value from the lfm.
1377 >
1378 >
1379 > IBX Change Log  version (1.2-3) Tue, 14 Apr 2015 14:11:17 +0100
1380 >
1381 > 1.  TIBStoredProc. Prepare now called by ParamByName to avoid need to always
1382 >    call Prepare before setting parameter values.
1383 >
1384 > 2.  Error message on ParamByName (all cases) not found now includes name of missing parameter.
1385 >
1386 > 3.  Code tidyup and more robust handling of dsql information result vector.
1387 >
1388 > 4.  Support for centralised handling of transaction status changes. TIBTransaction
1389 >    has been given additional events "AfterEdit", "AfterInsert", "AfterDelete", "AfterPost"
1390 >    and "AfterExecQuery". The first three are called after the same event is called
1391 >    for an IBCustomDataSet descendent using the Transaction. The fourth is called
1392 >    after a call to TIBSQL.ExecQuery, again using this transaction. These new events
1393 >    enable monitoring of transaction status changes for a given transaction to be
1394 >    handled in a single place. For example, when a change to the dataset occurs
1395 >    an indicator can be set that shows the user that in order to save changes,
1396 >    the transaction should be committed.  Rather than doing this per dataset, this
1397 >    can now be done per transaction.
1398 >
1399 > 5.  TDataSet.CheckBrowseMode automatically posts changes to the current row when
1400 >    the dataset is scrolled. However, any changes to the current row are, by default,
1401 >    discarded when the dataset is closed. TIBDataSet, TIBQuery and TIBTable now
1402 >    have a new property "DataSetCloseAction" that adds automatic posting of changes
1403 >    on dataset close. If this property is set to dcDiscardChanges (default) then the
1404 >    behaviour is unchanged from previous versions. if the value is set to dcSaveChanges
1405 >    then IBX will attempt to post any unsaved changes before the dataset is closed
1406 >    (and after the BeforeClose event handler is called). The exception is when the
1407 >    dataset is being closed as a result of a transaction rollback. In this case,
1408 >    no action is taken and any unsaved  changes are discarded. This avoids both
1409 >    unnecessary overhead and the risk that a validation error may occur in the Post
1410 >    raising an exception and thereby preventing a rollback.
1411 >
1412 > 6.  String Field sizes and Display Widths should now be correct for multi-byte character sets.
1413 >    In earlier versions, the Display Width was set to the maximum byte width rather than the character
1414 >    width. Display Widths are now corrected by dividing by the max byte width per character.
1415 >    For UTF8 character sets, the byte width is four and hence the Display Width will be
1416 >    the byte width divided by 4. The byte width of each character set is determined
1417 >    dynamically when the database connection is estabished from the RDB$CHARACTER_SETS
1418 >    system table. (see also http://bugs.freepascal.org/view.php?id=27766).
1419 >
1420 > 7.  SQLParser will now correctly parse SQL Text which contains ':' within quoted string.
1421 >
1422 > 8.  IBLookupComboEditBox: List should now always be restored to full list when the
1423 >    control loses focus. Default Key press default interval reduced to 200ms.
1424 >
1425 > 9.  DBControlGrid: Ensure that selection is changed to newly appended row, even
1426 >    when dataset rows are less than visible rows.
1427 >
1428 > 10. IBDynamicGrid: Editor Panel is not shown on indicator click if Datasource
1429 >    does not exist or DataSet is empty. More responsive on dataset open. New event
1430 >    OnRestorePosition. Column sort disabled if no header row.
1431 >
1432 > 11. IBTreeView: improved handling of response to "Add Node". Avoid scrolling dataset
1433 >    while dataset state is dsInsert. Avoids posting errors.
1434 >
1435 > 12. IBControls: New mechanism for distributing UpdateSQL and UpdateParams events. This is to
1436 >    avoid conflict with DisableControls/EnableControls with Master/Detail linked tables.
1437 >
1438 > 13. IBLookupComboEditBox: Now avoids SQL Errors when combo box text contains single quotes.
1439 >
1440 > 14. TIBDataSet and TIBQuery: new Event - OnValidatePost. This event has been introduced
1441 >    to solve a specific problem. That is when the dataset cursor is moved (e.g. by
1442 >    a grid mouse click and the current row is being edited or inserted. In this case, TDataset
1443 >    always "posts" the current record regardless or whether or not it may be more appropriate
1444 >    to cancel any changes; the post occurs before the "BeforeScroll" event fires due to the way the
1445 >    "MoveBy" function is implemented by TDataSet. The OnValidatePost event is called
1446 >    as the first action of the "Post" method and allows the handler to convert the Post
1447 >    into a Cancel if that is the appropriate action on moving to a different row. This is
1448 >    achieved by returning with "CancelPost" argument set to true. Note that an exception could be
1449 >    raised here, but it may still be more appropriate to validate a post and signal
1450 >    a problem in the "BeforePost" event handler. See readme.automaticposts.xhtml)
1451 >
1452 > 15. On Unix derived systems, the Firebird library name can now be given as a colon
1453 >    separated list. Each library name on the list is tried in turn, in left to right
1454 >    order with the first found being used as the firebird library. By default, on Linux,
1455 >    the library name list is 'libfbembed.so.2.5:libfbembed.so.2.1:libfbclient.so.2'. This can be
1456 >    overidden by the FBLIB environment variable or the OnGetLibraryName function.
1457 >
1458 >    Note: when using the libfbembed.so, if you prefix the database name with "localhost:"
1459 >    then it will still attempt to access the database via the Firebird Server and will
1460 >    require a username and password. If only the pathname is given, then the username
1461 >    and password should be omitted and the unix file permissions are used to grant
1462 >    access.
1463 >
1464 > IBX Change Log  version  (1.2-2) Sat, 14 Mar 2015 11:35:04 +0000
1465 >
1466 > 1.  A new IBControl - TDBControlGrid has been added. TDBControlGrid a lookalike
1467 >    rather than a clone for the Delphi TDBCrtlGrid. TDBControlGrid is a single column grid
1468 >    that replicates a TWinControl - typically a TPanel or a TFrame in each row. Each row
1469 >    corresponds to a row of the linked DataSource. Any data aware control on the
1470 >    replicated (e.g.) TPanel will then appear to have the appropriate value for the row.
1471 >
1472 > 2. As suggested by Julio Jiménez, a new property "SQLHourGlass" has been added to TIBDatabase.
1473 >   When set to false (default true), the Hour Glass cursor is supcpressed and no cursor change
1474 >   takes place during database access. This may be useful when there are performance issues with
1475 >   the change of cursor. Setting the property to false suppresses the change of cursor.
1476 >
1477 > 3. As suggested by Julio Jiménez, a new property "AutoCommit" has been added to TIBDataSet, TIBQuery
1478 >   and TIBTable. When set to acCommitRetaining (Default: acDisabled), a call is made to
1479 >   Transaction.CommitRetaining immediately after every Post or Delete. This has the effect of
1480 >   making all changes permanent immediately rather than when the transaction is explicitly
1481 >   committed.
1482 >
1483 > 4. Experimental support for the Firebird 3 SQL_BOOLEAN type has been added while still
1484 >   using the legacy Firebird API. Thanks to Gabor Boros for helping to test this feature.
1485 >
1486 > IBX Change Log  version      (1.2-1) Fri, 13 Mar 2015 11:14:15 +0000
1487 >
1488 > Development version only.
1489 >
1490 > IBX Change Log  version   (1.2-0) Thu, 26 Feb 2015 10:34:04 +0000
1491 >
1492 > 1. An internal select SQL Parser is now available for TIBCustomDataset descendents.
1493 >   This is typically used during an "OnBeforeOpen" event handler to manipulate the
1494 >   "Where" and "Having" clauses to implement user specified filters of arbitrary
1495 >   complexity.
1496 >
1497 > 2. A new Component Palette entry "Firebird Data Controls" is now available. This has
1498 >   three new data aware controls dependent on IBX and which make use of the SQL Parser.
1499 >   These are:
1500 >
1501 >   - TIBLookupComboEditBox
1502 >   - TIBDynamicGrid
1503 >   - TIBTreeview
1504 >
1505 >   TIBLookupComboEditBox is a TDBLookupComboBox descendent that implements "autocomplete"
1506 >   of typed in text and "autoinsert" of new entries. Autocomplete uses SQL manipulation
1507 >   to revise the available list and restrict it to items that are prefixed by the
1508 >   typed text (either case sensitive or case insensitive). Autoinsert allows a
1509 >   newly typed entry to be added to the list dataset and included in the available
1510 >   list items.
1511 >
1512 >   TIBDynamicGrid is a TDBGrid descendent that provides for:
1513 >   - automatic resizing of selected columns to fill the available row length
1514 >   - automatic positioning and sizing of a "totals" control, typically at the
1515 >     column footer, on a per column basis.
1516 >   - DataSet resorting on header row click, sorting the dataset by the selected column.
1517 >     A second click on the same header cell reversed the sort order.
1518 >   - Support for a "Panel Editor". That is on clicking the indicator column, the row
1519 >     is automatically expanded and a panel superimposed on it. The panel can have any
1520 >     number of child controls, typically data aware controls with the same datasource
1521 >     as the grid allowing for editing of additional fields and more complex editors.
1522 >   - Reselection of the same row following resorting.
1523 >   - A new cell editor that provides the same functionality as TIBLookupComboEditBox.
1524 >     Its properties are specified on a per column basis and allows for one or more
1525 >     columns to have their values selected from a list provided by a dataset.
1526 >     Autocomplete and autoinsert are also available. The existing picklist editor
1527 >     is unaffected by the extension.
1528 >
1529 >   TIBTreeView is a data aware TCustomTreeView.
1530 >
1531 > 3. When getting a field value using FieldByName.AsVariant, an SQL_INT64 with a
1532 >   zero scale will no longer return an error. An Int64 will be returned instead.
1533 >
1534 > 4. TIBTransaction now has events for Before and After Transaction End and a new function
1535 >   "GetEndAction" allowing the EndAction to be accessed by these event handlers.
1536 >
1537 > 5. TIBQuery can now handle correctly queries which contain the same keyword parameter
1538 >   repeated multiple times.
1539 >
1540 > 6. TIBUpdateSQL will no longer return an error when "RowsAffected" is <> 1. This error
1541 >   check used to get in the way of using Stored Procedures, and "Update or Insert"
1542 >   statements.
1543 >
1544 > 7. Insert, Modify and Delete property Editors now support Query Generation from
1545 >   Stored Procedures.
1546 >
1547 > 8. Three new examples illustrate the use of the new IB Controls
1548 >
1549 >
1550 > IBX Change Log  version  (1.1-0) Mon, 07 Jul 2014 14:01:07 +0100
1551  
1552   1. TIBXSQLVAR code clean up and optimisation to improve client side "prepare" and parameter
1553     setting performance. See "readme.field+param.names in the doc folder.(Thanks to

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