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Revision 309 by tony, Tue Jul 21 08:00:42 2020 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 (2.3-5 Build 12234) Sat, 18 Jul 2020 11:13:30 +0100
2 >
3 > 1.  TIBStringField: when a string value is read from a dataset buffer, if the
4 >    number of UTF8 characters exceeds the string size then string is truncated
5 >    to the maximum string size. This is  usually a problem with fixed width columns
6 >    right padded with white space.
7 >
8 > 2.  SQLFiltered and SQLFilterParams added to TIBQuery, TIBTable and TIBDataset.
9 >    If SQLFiltered is set then when a dataset is opened, each line in the
10 >    SQLFilterParams property is assumed to be a SQL condition clause and
11 >    ANDed into the Where clause of the SQL Select statement provided as a
12 >    dataset property. Each such SQL condition thus acts as an additional filter
13 >    on the dataset. (Not yet tested)
14 >
15 > 3.  The Filtered property inherited from TDataset is no longer used for SQL (server
16 >    side filters).
17 >
18 > IBX Change Log  version (2.3-4 Build 12041) Fri, 17 Apr 2020 14:00:32 +0100
19 >
20 > 1.  TIBXDataSet and Generators: Generator Names that are not all upper case or
21 >    not SQL Identifiers are now supported.
22 >
23 > 2.  TIBXScript: Set Generator is no longer rejected as unrecognised SQL and is
24 >    passed to the Firebird engine for execution.
25 >
26 > 3.  TIBDataSet: Unidirectional datasets now give an error message if an attempt
27 >    is made to scroll back.
28 >
29 > 4.  New unit: IBMessages.pas. Contains only messages used by IBX and not FBIntf
30 >
31 > 5. TIBLookupComboEditBox: When generating auto-complete SQL, the ListField is now
32 >   only enclosed in double quotes in SQL dialect 3 and when it needs to be.
33 >
34 > 6. TIBLookupComboEditBox: when the list source opens, the ListField name is now
35 >   validated. If no match is found in the list of field names and the database has
36 >   been opened in SQL Dialect 3, then the ListField Name is converted to upper case
37 >   if it then matches a field name. Otherwise, a Listfield not valid exception occurs.
38 >
39 > 7. IBGeneratoreditor.pas: Add missing parenthesis around "IS" statement for compliance
40 >   with fpc 3.2.
41 >
42 > IBX Change Log  version (2.3-3 Build 11512) Fri, 28 Dec 2018 10:04:17 +0000
43 >
44 >
45 > 1. New property for TIBDatabase and TIBXServicesConnection. This is "ConfigOverrides"
46 >   and is used to override the default settings in the client side "firebird.conf" This
47 >   includes "WireCompression" and "WireCrypt". The value of this property is a "TStrings".
48 >   Each line of the string list should be a setting in the same format as "firebird.conf".
49 >   For example "WireCompression = true" in order to request wire compression on the client side.
50 >
51 >   Note: explicit settings in the client side "firebird.conf" appear to take precedence
52 >   over settings given in TIBDatabase and TIBXServicesConnection. Many client side settings
53 >   also require a compatible setting in the server side "firebird.conf". For example
54 >   "WireCompression = true" must also be set in the server's "firebird.conf" for wire
55 >   compression to be used.
56 >
57 >   Whether or not WireCompression or WireCrypt are in use can be checked using the information
58 >   returned with the Client/Server protocol version. See ibx/examples/dbadmin and
59 >   ibx/examples/dbinfo for examples of how to display this information.
60 >
61 > 2. New property for TIBDatabase and TIBXServicesConnection: "WireCompression". This
62 >   is a "convenience" property. If set the "WireCompression=true" is added to the
63 >   ConfigOverrides. If unchecked then this setting is removed.
64 >
65 > 3. TIBExtract: 64-bit integer types are now correctly extracted as "BIGINT" and
66 >   not "INT64".
67 >
68 > 4. New published properties for TIBCSVDataOut, TIBInsertStmtsOut and TIBBlockFormatOut
69 >   These are:
70 >    property TimestampFormat: string;
71 >    property DateFormat: string;
72 >    property TimeFormat: string;
73 >
74 >   Respectively, these provide the date time format templates for SQL types: TIMESTAMP,
75 >   DATETIME and TIME. The format strings use the standard FPC date/time format
76 >   characters (see https://www.freepascal.org/docs-html/rtl/sysutils/formatchars.html).
77 >
78 >   If any of the above properties are set to an empty string, then the locale default
79 >   is used. This uses the ShortDateFormat and the LongTimeFormat. In timestamp, the
80 >   locale default is extended by appending '.zzz' to include milliseconds.
81 >
82 >   TIBCSVDataOut by default sets these properties to the empty string, while the other
83 >   two use: 'yyyy.mm.dd hh:nn:ss.zzz', 'yyyy.mm.dd' and 'hh:nn:ss.zzz' respectively.
84 >
85 > 5. New published property for TIBCSVDataOut:
86 >     property QuoteStrings: boolean (default true)
87 >
88 >   If false then strings are unquoted, otherwise, the QuoteChar property value is
89 >   used to delimit each and every string in the output.
90 >
91 > 6. New published properties for TIBCSVDataOut:
92 >    property FieldSeparator: string;
93 >    property HeaderSeparator: string;
94 >
95 >   Respectively, these provide the separator character(s) used to separate fields
96 >   in data and header rows. Both default to ','.
97 >
98 > 7. New published properties for TIBCSVDataOut and TIBBlockFormatOut:
99 >    TOnFormatTextString = procedure(sender: TObject; var TextString: string) of object;
100 >    property OnFormatTextString;
101 >
102 >   This event handler can be used to process text strings before they are included
103 >   in the output e.g. to replace unprintable characters with alternative strings.
104 >   This only applies to columns with an SQL Type of SQL_VARYING and SQL_TEXT.
105 >
106 > 8. TIBDataSet now raises an exception when ParamByName called with an invalid parameter name.
107 >   Uses "FindParam" if in order to find out if a parameter with a given name exists
108 >   and without raising and exception if it does not.
109 >
110 > 9. TIBQuery now uses IBX SQL Parser instead of the TParams SQL parser in order to ensure
111 >   consistency with SQL queries.
112 >
113 > 10. CaseSensitiveParameterNames property added to TIBSQL, TIBDataSet and TIBQuery.
114 >    When true, SQL statement parameter names are parsed case sensitive. Note for
115 >    TIBDataSet only applies to Select query.
116 >
117 > 11. IBEvents: removing a TIBEvent component from a form should no longer result in
118 >    an IDE exception.
119 >
120 > 12. LocalDBSupport: initial database creation should now work correctly
121 >    when the schema source is an sql file.
122 >
123 > 13. TIBCMLocalDBSupport: new event handler "property OnProgressEvent: TOnProgressEvent"
124 >    when defined, this handler will be called by the internal TIBXScript during
125 >    initial database creation when the schema source is an sql file and may be used
126 >    to provide a visual indication of progress in console mode.
127 >
128 > 14. TCustomIBLocalDBSupport: new public property "InOnCreateDB: boolean". This is set
129 >    to true while a new local database is being created and its schema populated.
130 >    Useful in (e.g.) TIBDatabase.OnAfterConnect handler to suppress actions
131 >    when the database is disconnected/connected during the create DB procedure.
132 >
133 > 15. TIBXScript: any User/password parameters found in a CREATE DATABASE statement
134 >    are now always ignored and replaced by the user name and password provided as
135 >    the login parameters for the TIBDatabase referenced from the TIBXScript. The
136 >    IgnoreCreateDatabase property still applies and the CREATE DATABASE statement is
137 >    completely ignored if this property is true.
138 >
139 > 16. Code tidyup in IBTreeView: Node properties initialisation moved from TIBTreeView.AddNodes
140 >    to TIBTreeView.Added. An OnAddition event handler is no longer needed to initialise
141 >    ImageIndex and SelectImageIndex values on AddNode.
142 >
143 > 17. TIBDatabase.Attachment and TIBXServicesConnection.ServicesIntf properties are now
144 >    read/write. This should enabled (e.g.) multiple instances of TIBDatabase to share
145 >    the same database connection.
146 >
147 > 18. TIBDataSet and TIBQuery now support the TDataSet "Filter" property.
148 >    if provided, this should be an conditional SQL expression suitable for
149 >    including in an SQL Select statement "where" clause. If non-empty and the
150 >    "Filtered" property is true then the SQL expression provided as the value of
151 >    the "Filter" property is "ANDed" with any existing condition statement
152 >    in the SQL statement's "Where" clause.
153 >
154 >    If the "Filter" property is set at run time, the "Filtered" property is true
155 >    and the dataset is already open, then the dataset is closed and re-opened automatically.
156 >
157 >    The "Filter" condition may include IBX style parameters. In which case, their
158 >    value must be set by the dataset's "OnBeforeOpen" event handler.
159 >
160 >    This is a public property for TIBDataSet and TIBQuery query and intended for
161 >    use at run time.
162 >
163 >    Note: The property is a published property of TIBTable. The TIBTable functionality
164 >    is unaffected by this change.
165 >
166 > IBX Change Log  version (2.3-2) Wed, 05 Dec 2018 12:19:23 +0000
167 >
168 > 1. Remove need to check for IsMultiThread by providing access to GUI timers via
169 >   IBGUIInterface. Note: master/detail delay timer does not apply to console
170 >   mode apps.
171 >
172 > 2. TIBCustomDataSet: SQLParser ignored if it does not contain a valid select
173 >   statement. This avoids problems if "Execute Block" is used as the Query.
174 >
175 > 3. IBSQLParser now uses the common SQL tokeniser from fbintf. This replaces the
176 >   internal SQL tokeniser routines.
177 >
178 > 4. IBSQLParser: new property NotaSelectStmt. Set to true if SQL fails to parse
179 >   as a select statement, with or without CTEs.
180 >
181 > 5. IBSQLParser: parser now recognises the "ROWS" clause.
182 >
183 > 6. TIBXScript now uses the common SQL tokeniser from fbintf. This replaces the
184 >   internal SQL tokeniser routines.
185 >
186 > 7.  Fix error in TIBXScript processing of "set" statements. This avoids exceptions
187 >    being raised for valid set statements processed by a data formatter.
188 >
189 > 8. New published property for TIBDatabase and TIBXServicesConnection. This is
190 >   FirebirdLibraryPathName: string. If not empty it is used to explicitly specify
191 >   the path of the Firebird Library used by the database/services connection.
192 >
193 > 9. New read only public property for TIBDatabase and TIBXServicesConnection. This
194 >   is FirebirdAPI and returns the IFirebirdAPI interface used by the database/
195 >   services connection.
196 >
197 > 10.SQL Property editors now quote parameter names if "Quote identifier" is selected
198 >   or param name is not a valid SQL identifier.
199 >
200 > 11. IBLookupComboEditBox: In Lazarus 2.0, TDBLookupComboBox takes a more restrictive
201 >    view of whether the text box should be editable when no DataSource is specified.
202 >    TIBLookupComboEditBox has been updated to workaround this problem. As long as
203 >    ReadOnly is false, the text box is editable when no DataSource is specified.
204 >
205 > 12. AllowUseOfFBLIB is now set to "true" at design time. This is to allow use of
206 >    the FBLIB environment variable. If you do not want to permit this then you
207 >    must modify the Register procedure in the design/IBDBReg.pas unit to remove
208 >    this setting.
209 >
210 > IBX Change Log  version                 (2.3-1) Thu, 25 Oct 2018 14:39:45 +0100
211 >
212 > 1. IBCustomDataset: replace deprecated function ValidUTF8String with call to
213 >   Utf8EscapeControlChars
214 >
215 > IBX Change Log  version                (2.3-0) Mon, 16 Apr 2018 09:48:06 +0100
216 >
217 > IMPORTANT: the source code tree has been re-organised for IBX 2.3. Please remove
218 > all previous copies of the IBX source code tree before installing this release.
219 >
220 > The IBX packages used by most users have not changed, with one exception. The
221 > IBServices unit has been moved to the package iblegacyServices.lpk. To continue
222 > to use the IBServices unit in your applications, please add the iblegacyServices
223 > to the list of dependencies. To do this, open the Project Inspector and select
224 > Add->New Requirement and select "ibLegacyServices" from the list of available
225 > packages.
226 >
227 > 1. New unit IBXServices. The IBXServices unit is a re-architectured update of
228 >   the IBServices unit providing what is intended to be a clearer and easier to
229 >   use set of IB Services components. See Chapter 10 of the IBX User Guide for
230 >   more information and the guide to "Firebird Service Management Using IBX".
231 >   As indicated above, the legacy services components are still available and
232 >   provided in a separate package. There is no need to update working applications
233 >   using the older versions except for an additional package dependency.
234 >
235 > 2. The IBX packages and source code tree have been re-organised in an attempt to
236 >   finally get rid of the "duplicate ppu" warnings. This re-organisation should
237 >   not affect existing users. Section 2.3 of the IBX User Guide describes the
238 >   new set of IBX packages.
239 >
240 > 3. The ibx/examples/DBAdmin and the ibx/examples/services example have been
241 >   updated to use the new Services API components.
242 >
243 > 4. The iblocal package has been updated to use the new Services API components.
244 >
245 > 5. procedure SetAutoAdmin; in the new IBX Services this method is now a member of
246 >   TIBXSecurityService. It had been wrongly classified in the previous version
247 >   as a per database configuration item. It is global to a server and hence
248 >   correctly positioned as part of the Security Package. In the DBAdmin example,
249 >   the setting has moved to the mappings page.
250 >
251 > 6. TIBXScript: IgnoreCreateDatabase added. If true then CREATE DATABASE statements
252 >   are ignored.
253 >
254 > 7. TIBDatabase: DropDatabase now ensures that all transactions have been properly
255 >   closed before the database is dropped. Before and After Disconnect event handlers
256 >   are also fired.
257 >
258 > 8. TIBTransaction: OnStartTransaction event now fires every time the transaction
259 >   is started and not just the first time.
260 >
261 > 9. IBDataOutput: Use FormatFloat for all performance statistics to avoid platform
262 >   depenendency with comp type.
263 >
264 > 10. IBDataOutput: select query data output is now sent to stdout instead of stderr.
265 >
266 > 11. TIBDatabase: Remove regression. If a user login dialog changes the DatabaseName
267 >    then this is recognised and not ignored.
268 >
269 > 12. TIBDataSet, TIBQuery, TIBTable: additions:
270 >    function GetRowsAffected(var SelectCount, InsertCount, UpdateCount, DeleteCount: integer): boolean;
271 >    function GetPerfStatistics(var stats: TPerfCounters): boolean;
272 >    property EnableStatistics: boolean read FEnableStatistics write SetEnableStatistics;
273 >
274 >    GetRowsAffected returns the affected row counts from the last insert/update/delete
275 >    if EnableStatistics = true then GetPerfStatistics returns the current stats
276 >    counters for the select query. Note: stats accumulate after each fetch from
277 >    the database. To get total query cost after open, call the "Last" method
278 >    and then GetPerfStatistics.
279 >
280 >    See ibx/examples/consolemode for an example of the use of GetPerfStatistics
281 >
282 > 13. TIBExtract: Identity columns DDL. "Start with clause" now correctly encapsulated
283 >    in parenthesises.
284 >
285 > 14. TIBExtract: new published property "AlwaysQuoteIdentifiers". If true then in dialect 3
286 >    SQL identifiers are always delimited by double quotes. If false, then they are
287 >    only delimited if the identifier is a reserved word, contains lower case or special
288 >    characters. Set this property to true to retain previous behaviour.
289 >
290 > 15. Insert SQL Property Editor. In Insert Returning Clause, Identity column names
291 >    are now inserted in double quotes if not Reserved Words or valid SQL Identifiers.
292 >
293 > 16. TIBDataSet, TIBQuery, TIBTable: addition:
294 >       property MasterDetailDelay: integer {defaults to zero}
295 >
296 >    When non-zero and the dataset is a detail table referencing a master table
297 >    through either a MasterSource (TIBTable) or a DataSource (TIBDataSet, TIBQuery)
298 >    then a synchronisation delay is added (in milliseconds) between the master
299 >    row changing and the detail dataset being re-opened. If the master dataset
300 >    is scrolled before the delay expires then the delay is reset. This can be used
301 >    to avoid performance overheads when scrolling through a large master dataset.
302 >
303 >    Note: uses fptimer and hence requires a thread manager. Under Linux the
304 >    chreads unit must be included in your project. TTimer is not used in order
305 >    to avoid an LCL dependency. Requires FPC 3.0.2 or later.
306 >
307 > 17. TIBExtract: User role grants now excluded when etGrantsToUser not specified
308 >    with Extract Option eoDatabase.
309 >
310 > 18. TIBLookupComboEditBox: Workaround added for https://bugs.freepascal.org/view.php?id=33428
311 >    When a deLayoutChanged event is reported on the ListSource dataset, the
312 >    combobox text is updated. This allows a listsource (detail) to be in a Master/Detail
313 >    relationship with the control's datasource (master).
314 >
315 > 19. TIBExtract: Full BigInt value range now supported for Generators/Sequences.
316 >
317 > 20. TIBExtract: Select Procedures (Procedure type 1) now include "SUSPEND;" clause in their
318 >    stubs. Pedantic fix really, as procedures output in dependency order anyway.
319 >
320 > 21. TIBExtract: Package Headers and Package Bodies are now included in the extracted
321 >    DDL (Firebird 3 and later only).
322 >
323 > 22. TIBLookupComboBox Autocomplete Fixes:
324 >    i. Only appended text is now selected after autocomplete.
325 >    ii. Uppercase keys no longer ignored for autocomplete.
326 >    iii. Retain Prefix case is now honoured correctly.
327 >    iv. When a DataSource is assigned, typing after autocomplete now extends prefix
328 >        before autocomplete performed. i.e. behaviour now the same as when
329 >        no DataSource assigned.
330 >
331 > 23. TIBXScript: Single Line Comments starting with '--' are now ignored when occurring
332 >    between SQL statements.
333 >
334 > 24. TIBExtract: New published property CaseSensitiveObjectNames. If false (default) then
335 >    ObjectNames are converted to upper case before matching against metadata object
336 >    names, unless the objectname is delimited by double quotes, in which case, the
337 >    double quotes are removed and the remaining string is used (unmodified) to match
338 >    against the metadata object name.
339 >
340 >    If true then the ObjectName is used as is without modification and matched
341 >    against the metadata object name. No attempt is made to remove double quotes.
342 >
343 > 25. TIBExtract: New Extract Types: etDatabaseTriggers and etDDLTriggers. When used
344 >    with eoTrigger, these extract types can be used to select only Database Triggers,
345 >    or DDL Triggers or both. Ignored when etTable or etTrigger included in Extract Types.
346 >
347 > 26. TIBXScript: If an exception occurs during the processing of a statement, the
348 >    statement separate character is now reset to the default (';').
349 >
350 > 27. TIBDatabase: Reconnect method added and used by TIBXScript for reconnect.
351 >
352 > 28. TIBXScript: Transaction is no longer automatically reactivated immediately processing
353 >    a commit or reconnect statement and instead activated only when next SQL statement
354 >    is executed.
355 >
356 > 29. TIBSQL.HasField should no longer generate and exception when the field does not exist.
357 >
358 > 30. TIBXScript: case insensitive regex now used when matching statements instead of
359 >    converting statement to upper case.
360 >
361 > 31. TIBExtract: metadata comments now supported. New published property
362 >    IncludeMetaDataComments (default true). If true then metadata comments included
363 >    in extracted DDL. New Extract Object member eoComments. This may be used with
364 >    ExtractObject method to list all metadata comments.
365 >
366 > 32. TIBExtract: ListObjectNames method added.
367 >
368 > 33. Updated Database component editor to support additional connection string
369 >    types.
370 >
371 > IBX Change Log  version  (2.2-0) Wed, 28 Feb 2018 10:57:45 +0000
372 >
373 > NOTE: THE LOCATIONS OF SOME OF THE UNIT DIRECTORIES HAS CHANGED FROM IBX 2.1. THIS IS TO
374 > AVOID DUPLICATE PPU WARNINGS. PLEASE REMOVE EARLIER VERSIONS OF IBX BEFORE INSTALLING THIS
375 > RELEASE.
376 >
377 > NOTE: THE DBADMIN DEMO REQUIRES THAT THE MemDSLaz PACKAGE IS INSTALLED IN THE LAZARUS IDE.
378 >
379 > 1. IBExtract: Identity columns - add additional check for null column for generator name.
380 >
381 > 2. IBCustomDataSet: Insert and Modify (Update) queries now recognise and process SQL RETURNING clauses.
382 >   The main use for this is for Firebird 3 Identity columns (see IBXDocumentation 6.6.8 for further
383 >   information). However, this is also a very useful mechanism for returning updated computed by
384 >   column values. Values returned as a result of executing an Insert or Update statement
385 >   replace existing values in the current row for each corresponding column.
386 >
387 >   Previously, if a dataset's select query included read only (computed by) fields then
388 >   an automatic row refresh was performed after an insert or update query had been processed,
389 >   irrespective of the setting of the "ForcedUpdates" property. This has changed such
390 >   that an automatic refresh is no longer performed if an insert or update query contains
391 >   a returning clause that updates one or more fields on the current row. A full row
392 >   refresh is only performed if (a) ForcedRefresh is true or (b) the query does not return any
393 >   field values and the select query contains read only fields. Use of Insert/update
394 >   returning should be significantly more efficient than executing a refresh query.
395 >
396 >   This behaviour change is intended to be backwards compatible and there should be no need to change
397 >   existing programs, other than to improve performance by using the new capability.
398 >
399 > 3. IBCustomDataSet: DELETE...RETURNING queries are now also recognised. However, as
400 >   they are called when the dataset row is being deleted, there is no value in
401 >   updating the current record from the query result. Instead, a new event handler
402 >   "OnDeleteReturning" is provided. If a DELETE...RETURNING query is execute and
403 >   an OnDeleteReturning event handler is provided then it is called with the IResults returned
404 >   by the query. The event handler can then interrogate the query results and
405 >   perform whatever action is necessary. For example to confirm, to the user,
406 >   the deletion of a row with the returned values.
407 >
408 > 4. TIBTable: generated Insert and Update SQL now include a RETURNING clause for
409 >   any Computed By or Identity Columns. The IBTables example has been updated to
410 >   illustrate the computation of the employee Full Name on update.
411 >
412 > 5. TIBTable: The GeneratorField property is now published.
413 >
414 > 6. The InsertSQL property editor now shows Firebird 3 Identity columns separate from the Field List.
415 >   When InsertSQL is generated, the Identity columns are not included in the list of values to
416 >   be inserted. A RETURNING clause is added to the insert statement to return the value of
417 >   each Identity column after the insert is executed.
418 >
419 > 7. The Modify Property Editor now generates Update SQL with Computed By fields in Update..Returning clause.
420 >   Similarly Insert Property Editor now generates Insert SQL with Computed By fields in
421 >   Insert..Returning clause.
422 >
423 > 8. TIBGenerator: small performance improvement by not preparing query each time
424 >   a new value is generated.
425 >
426 > 9. TIBSQL: Free resources when transaction changed - ensures new transaction is used.
427 >
428 > 10. Property editors will now sync table name to a System Table when "Include System
429 >    Tables" is selected and the query is for a System Table.
430 >
431 > 11. Minor Performance improvement to handling of Date/Time types in IBX datasets. Field
432 >    values are no longer converted to milliseconds from TDateTime and then back again
433 >    to TDateTime (the conversion to milliseconds is the default TDataset approach).
434 >
435 > 12. Property Editors handling of Stored Procedures.
436 >    * Select and Refresh: only show a list of stored procedures that return multiple rows (proc type 1) and
437 >      which have a non-empty list of output parameters (i.e. stored procedures that may be used in a select
438 >      query).
439 >    * Modify and Insert: only show a list of stored procedures that return at most a singleton row (proc type 2).
440 >
441 > 13. IBStoredProc: Now supports Firebird 3 Package Names. A new published property PackageName
442 >    can be used to select a package. If non-empty, the stored procedure name is
443 >    expected to be a stored procedure defined in the specified package and the
444 >    generated SQL will be as required for a stored procedure located in a package.
445 >
446 > 14. Select, Refresh, Insert, Modify, Delete and TIBSQL SQL Property Editors now include
447 >    a "Package Name" drop down box to allow selection of a Firebird 3 Package from
448 >    which a stored procedure can be selected. With no package name selected, non-package
449 >    stored procedures are listed.
450 >
451 > 15. TIBXScript: turn off database login prompt when reconnecting - this avoids prompting
452 >    for password on reconnect.
453 >
454 > 16. TIBDatabase: use IAttachment for connection default character set id, code page
455 >    and character set name.
456 >
457 > 17. TIBDatabaseInfo: cache ODS Version information on first request in order to minimise
458 >    DB info lookups"
459 >
460 > 18. IBExtract: now supports DDL Triggers and Grants to DDL objects.
461 >
462 > 19. Add a property Editor for TIBUpdate.RefreshSQL.
463 >
464 > 20. IBUpdate: Ignore non-data (e.g. calculated) fields when assembling list of input
465 >    parameters. This stops an exception being raised when the field cannot be
466 >    located in the record buffer.
467 >
468 > 21. Property Editors now automatically include System Tables when opened and when the query table
469 >    is a System Table.
470 >
471 > 22. IBServices: SQRB and SRB buffers are now reset when service query throws an exception.
472 >    This avoids errors due to a stale SQRB or SRB being used for the next query.
473 >
474 > 23. IBServices: Service attach parameters now include "expected_db". This is used to
475 >    add the SPB item isc_spb_expected_db. This names a database using
476 >    an alternative Security Database (FB3 onwards) and allows (e.g. backup/restore) using such a
477 >    database. examples/services re-written to illustrate use of "expected_db".
478 >
479 > 24. IBServices: TIBControlAndQueryService.WriteNextChunk no longer ignores isc_info_svc_timeout.
480 >    This avoids truncated backups when the server returns a timeout (busy) response.
481 >
482 > 25. TIBDatabase: isc_dpb_page_size now supported as a database parameter when using TIBDatabase.CreateDatabase.
483 >
484 > 26. TIBDatabase: DatabaseName property may now be prefixed by $TEMP$ or $DATADIR$ for local
485 >    databasenames. These are respectively expanded to the local system's temp directory
486 >    (including trailing delimiter) or to a prescribed data directory (including
487 >    trailing delimiter). Under Unix systems the data directory is a hidden directory
488 >    in the user's home directory. The hidden directory name is either the string returned
489 >    from the SysUtils "Vendor Name" or "IBX" if empty. In either case prefixed by a '.'.
490 >    Under Windows, the directory is the same as the Data Directory as decribed
491 >    above but instead prefixed by the User's application data path. These may be
492 >    used to improve application portability for Personal Databases.
493 >
494 > 27. TIBTable: FieldDefs property is no longer published. Due to the use of TIBFieldDef
495 >    this has not worked for a long time and is not useful either. FieldDefs should be
496 >    managed using the Fields Editor as with any other dataset. To access the fields
497 >    editor for a TIBTable component, double click on the component. The fields editor
498 >    is then displayed.
499 >
500 > 28. TIBDatabaseInfo: new properties/function
501 >     * DateDBCreated (returns date/time database created)
502 >     * TransactionCount (returns no. of active transactions)
503 >     * GetDatabasePage(PageNo: integer) (returns contents of specified database page - SYSDBA only).
504 >     * PagesFree (Firebird 3 or later)
505 >     * PagesUsed (Firebird 3 or later)
506 >     * Encrypted (returns true if database encrypted. (Firebird 3.0.3 or later only)
507 >     * EncryptionKeyName (returns the name of the encryption key if any (Firebird 3.0.3 or later only)
508 >
509 > 29. IBServices classes now provided the decoded release number in the (array) property ServerVersionNo.
510 >
511 > 30. TIBSecurityService now supports display/modification of the User Admin Role (Firebird 2.5 and later).
512 >
513 > 31. TIBConfigService now has a procedure SetAutoAdmin(Value: boolean) to enable/disable
514 >    the automtic mapping of privileged OS users to the RDB$ADMIN role (Firebird 2.5 and later).
515 >
516 > 32. TIBBackupService: New Option - NoDBTriggers equivalent to -nodbtriggers switch introduced
517 >    in the gbak utility at V.2.1 to prevent database-level and transaction-level triggers from
518 >    firing during backup and restore.
519 >
520 > 33. Both TIBBackupService and TIBRestoreService now support backup/restore statistics options
521 >    for verbose output using the new property "StatisticsRequested".
522 >    see https://firebirdsql.org/file/documentation/release_notes/html/en/2_5/rnfb25-util-gbak.html#rnfb25-util-gbakstats
523 >
524 > 34. TIBRestoreService: now supports new options RestoreMetaDataOnly (Firebird 2.5 and later).
525 >
526 > 35. TIBOnlineValidationService component added to the IBServices and the "Firebird Admin"
527 >    palette. This uses the online validation feature added in Firebird 2.5. The
528 >    services's properties enable inclusion/exclusion of tables and indexes using
529 >    regular expressions. See.
530 >    https://firebirdsql.org/file/documentation/release_notes/html/en/2_5/rnfb25-apiods-api.html#rnfb25-apiods-api-onlinevalidation
531 >
532 > 36. IBServices: procedure TIBConfigService.SetNoLinger added to set no linger
533 >    option on a database.
534 >
535 > 37. TIBCustomService: Assign method implemented to allow copying of service login
536 >    context between service API components. "Detach" method now only detaches
537 >    service when last reference to the service interface detaches. Tidy up of
538 >    code for SetActive and Attach methods including password hiding.
539 >
540 > 38. TIBDatabase: new properties: AuthenticationMethod and RemoteProtocol. Read only
541 >    and used to determine the auth method and protocol used for the connection.
542 >
543 > 39. TIBDatabase: ensure that SQLDialect setting is used when creating a database using
544 >    a Create Database Statement generated by IBX.
545 >
546 > 40. All IBServices now have an additional published property "PortNo". This may
547 >    be set to a non-standard port number when necessary. If zero then the default
548 >    port number is used.
549 >
550 > 41: TIBLookupComboeditBox: Ensure dataset updated when change selected with the keyboard
551 >    and not just the mouse.
552 >
553 > 42. TIBCustomDataset: reopen query if already active when a TIBControlLink is added.
554 >
555 > 43. TIBTreeview: new ImageIndexField and SelectedIndexField Property allows the
556 >    image index and selected image index for each node to be set from a database field.
557 >
558 > 44. TIBExtract: new extract type (etGrantsToUser) for use with eoDatabase. If included
559 >    then database schema includes grants to all users. If not present then the
560 >    only user grants included are those to User PUBLIC.
561 >
562 > 45. TIBTreeView: performance improvement. When expanding include both expanded node
563 >    and child nodes in dataset.
564 >
565 >
566 > IBX Change Log  version                            (2.1-0) Fri, 15 Dec 2017 12:20:11 +0000
567 >
568 > 1. IBCustomDataset: Minor change of PChar to PByte for compatibility with fbintf
569 >   changes.
570 >
571 > 2. IBCustomDataset: Fixed use of incorrect datasize in TIBStringField.SetAsString.
572 >   Bug could result in truncated multi-byte character set values.
573 >
574 > 3. Changes consequential on moving fbintf character set utility functions from
575 >   IFirebirdAPI to IAttachment.
576 >
577 > 4. Avoid "Object is nil" error when opening a database with DefaultSystemCodePage = true
578 >
579 > 5. IBLookupComboEditBox: avoid race condition when autocompleting text that occasionally
580 >   results in autocomplete ignoring prefix text.
581 >
582 > 6. IBLookupComboEditBox: Ensure that cursor is not reset to start of text when
583 >   entering a new name into the text box.
584 >
585 > 7. IBCustomDataset: ensure that TIBStringField uses the field size reported by
586 >   Firebird rather than recomputing it.
587 >
588 > 8. Property Editor positioning tidy up: All IBX Property editors should now be
589 >   screen centre. Previously some were "poDesigned" which may be inappropriate
590 >   for multi monitor desktops.
591 >
592 > 10. TIBTreeView.FindNode: protect against error if zero length path or empty tree node.
593 >
594 > 11. TIBTransaction: On Force Disconnect do not raise an exception when problem ending
595 >    a transaction and always reset the object.
596 >
597 > 12. TIBQuery tidyup: remove unnecessary call to GetAffectedRows.
598 >
599 > 13. TIBXScript: Allow for override of database filename in Create Database statements.
600 >
601 > 14. IBLocaldb: Support initialisation of the database from an SQL script in addition
602 >    to a gbak format archive.
603 >
604 > 15. IBLocaldb: fix problem that stopped the OnSharedDataDir event from being recognised.
605 >
606 > 16. IBLocaldb: Drop database if error creating an empty database.
607 >
608 > 17. TIBTreeView: improve performance when selecting node - avoid refreshing dataset
609 >    unless selected node not in current dataset.
610 >
611 > 18. IBServices: SetDBParams method moved from TCustomIBLocalDBSupport (in IBLocalDB package)
612 >    to TIBCustomService, and IBlocalDB code tidy up.
613 >
614 > 19. IBTreeView: Initialise TIBTreeNode KeyValue to null to avoid unpredictable
615 >    behaviour due to uninitialised variable.
616 >
617 > 20. IBServices: Correct encoding of isc_spb_prp_write_mode in TIBConfigService from
618 >    integer to byte. Ditto isc_spb_prp_reserve_space and isc_spb_prp_access_mode.
619 >
620 > 21. IBSQL: When Database changed ensure that all resources are freed.
621 >
622 > 22. IBCustomDataset: When database changed ensure that queries an unprepared.
623 >
624 > 23. SQL Property Editors now use SynEdit with SQL Highlighter. New features include:
625 >    * Line Wrap on SQL Token boundaries (on user command)
626 >    * auto-complete table names in drop down list of table names
627 >    * Double click on tablename or field name adds to SQL text
628 >
629 > 24. IBDataOutput: print statistics using float (%f) format instead of decimal (%d).
630 >
631 > 25. IBTreeView: Call to FindNode: param type change from "array of Variant" to
632 >    TVariantArray. Seems to avoid memory corruption in Windows (probably a
633 >    workaround for a problem in fpc 3.0.4 win64).
634 >
635 > 26. IBDatabaseInfo: Code tidy up. Add check for database not assigned or not open.
636 >
637 > 27. IBDatabaseInfo: Remove memory leak when accessing database operation counts.
638 >
639 > IBX Change Log  version                   (2.0-2) Fri, 24 Feb 2017 12:17:53 +0000
640 >
641 > 1. TIBDatabase.CreateDatabase: extract full DB Name from SQL using reg ex in order to
642 >   include remote system name.
643 >
644 > 2. TIBExtract: No longer include comment header and COMMIT statement for empty
645 >   tables when data included in output.
646 >
647 > 3. Profiling: IBSQL now has conditional compilation flags to enable query performance
648 >   and timing information to be written to stdout. This may be used to locate
649 >   performance bottlenecks.
650 >
651 > 4. SQLParser: only call "OnChanging" event handler when value is different.
652 >
653 > 5. IBDynamicGrid: Update handling of navigation keys for a TDateEdit
654 >
655 > 6. IBCustomDataset: Set internalunprepared flag when transaction ends. This ensures
656 >   that BindFields is called when the query is next activated. Avoids FieldName
657 >   not found error.
658 >
659 > 7. IBUpdate: This is a new IBX component similar to TIBUpdateSQL. It is more general
660 >   purpose and allows the programmer to define any action they want for Update, Insert
661 >   or Delete. This may be complex SQL (similar to a Trigger), application specific
662 >   filtering of updates, or use of statements such as Grant or Revoke instead of
663 >   normal DML. See User Manual for more information.
664 >
665 > IBX Change Log  version                  (2.0-1) Mon, 09 Jan 2017 15:31:49 +0000
666 >
667 > 1. TIBEvents: Fix uninitialised variable that could result in lost events.
668 >
669 > 2. TIBExtract: Added support for FB3 "USAGE" privilege.
670 >
671 > 3. TIBExtract: data formatted as Charset set "octets" is now output using
672 >   hexadecimal notation.
673 >
674 > 4. TIBExtract: Binary Blobs and array data can now be embedded in INSERT statements
675 >   using a simple XML format.
676 >
677 > 5. TIBExtract: extract of individual Triggers and Stored Procedures can now include
678 >   grants to these objects.
679 >
680 > 6. TIBExtract: Stored Procedures and Views output in dependency order to avoid
681 >   dependency problems restoring complex databases.
682 >
683 > 7. TIBXScript: This component has been restructured to allow for the processing of
684 >   embedded XML in INSERT statements and to support interactive sources in addition
685 >   to non-interactive data sources such as files.
686 >
687 > 8. TIBXScript: CREATE DATABASE, DROP DATABASE, CONNECT statements are now supported.
688 >
689 > 9. TIBXScript: ISQL compatiable Set statements are now supported:
690 >   SET SQL DIALECT
691 >   SET TERM
692 >   SET AUTODDL
693 >   SET BAIL
694 >   SET ECHO
695 >   SET COUNT
696 >   SET STATS
697 >   SET NAMES <character set>
698 >
699 > 10. IBVersion unit added to hold current IBX Version Number information.
700 >
701 > 11. TIBExtract: Use character rather than byte length for VarChar procedure arguments.,
702 >    and domain definitions.
703 >
704 > 12. TIBExtract: Triggers now use SQL2003 syntax and database and transaction triggers
705 >    fully supported.
706 >
707 > 13. TIBExtract: when a database dump includes data, the generator values are now also set.
708 >
709 > 14: IBSQLEdit: Unit LCLPlatformDef added to uses clauses for lazarus 1.7 and later.
710 >
711 > IBX Change Log  version     (2.0-0) Tue, 06 Dec 2016 10:33:44 +0000
712 >
713 > See also doc/IBX4LazarusGuide.pdf for important information on
714 > upgrading to IBX2.
715 >
716 > 1. Size property of TIBStringField is now the width in characters of the field
717 >   and not the byte length. This applies only to multi-byte character sets such
718 >   as UTF8. The original approach aligned with TStringField. However, the TStringField
719 >   code is not recognised as a bug and hence this change to align the behaviour.
720 >   The TStringField change is expected in fpc 3.2.0.
721 >
722 > 2. A new property AutoFieldSize: boolean has been added to TIBStringField. When
723 >   true (default) then Size property value saved in the lfm is ignored. Size is
724 >   always set from the dynamic information read from the database. It is unclear
725 >   why anyone would want to override this and set Size to false.
726 >
727 > 3. ibxscript: should now handle correctly a Case..End statement within a procedure
728 >   block.
729 >
730 > 4. IBDatabase: new property - CreateIfNotExists. If true and database does not
731 >   exist when an attempt is made to connect to it (run time only) then an attempt
732 >   is made to create the database.
733 >
734 > 5. IBDatabase: new event - OnCreateDatabase. This event is called after a database
735 >   has been successfully created as a result of a call to CreateDatabase or when
736 >   creating a database after it was found not to exist.
737 >
738 > 6.  DBControlGrid: a race condition could result in the wrong row image being
739 >    written to the cache. This has been avoided by a trip round the message
740 >    loop before rendering the row image.
741 >
742 > 7.  DBControlGrid: It is strongly recommended not to open the source DataSet for
743 >    a DBControlGrid during a Form's "OnShow" event handler. Under GTK2 this is
744 >    known to risk corrupt rendering of row images when the control is first
745 >    displayed. If necessary use "Application.QueueAsyncCall" to delay opening
746 >    of the dataset (see DBControlGrid examples) until the Form's Window has been created.
747 >
748 > 8.  DBControlGrid & IBDynamicGrid: Navigation keys should now work correctly with
749 >    a TDateEdit control located on an editor panel.
750 >
751 > 9.  TIBExtract: brought up-to-date plus many bug fixes.
752 >
753 > 10. DBControlGrid: Removed memory leak when updating rows.
754 >
755 > 11. TIBCMLocalDBSupport: fixed invalid free on upgrade.
756 >
757 > IBX Change Log  version                                           (1.4-3) Thu, 22 Sep 2016 18:10:15 +0100
758 >
759 > 1. IBCustomDataset: When calling SetCodePage, no longer request transliteration
760 >   when target codepage is CP_NONE. This is a workaround for
761 >   http://bugs.freepascal.org/view.php?id=30622.
762 >
763 > 2. DBLog option removed from TIBStatisticalService - not supported by server
764 >   since Firebird 1.5.
765 >
766 > 3. ibxscript: An error is no longer generated for "on commit preserve rows" or
767 >   similar.
768 >
769 > 4. IBCodePage: updated mapping between codepages and character id.
770 >
771 > 5. ftWideString and ftWideMemo withdrawn. There is no UTF16 character set in
772 >   Firebird. Character sets with a char width of two are not UTF16.
773 >
774 > 6. Strings received from the database are now always transliterated into UTF8
775 >   regardless of the database character set or connection character set. This
776 >   is for compatibility with the LCL.
777 >
778 > IBX Change Log  version  (1.4-2) Thu, 22 Sep 2016 15:25:27 +0100
779 >
780 > 1. IBBlob: Defer reading of blob until read method called. This avoids having to
781 >   read in an entire blob just to get the size of the blob. General performance
782 >   improvement when opening datasets containing blobs.
783 >
784 > 2. Clearing a  Blob now sets the corresponding field's modified flag.
785 >
786 > 3. IBLookupCombo: When not performing auto-complete, original query sort order
787 >   is now used.
788 >
789 > 4. IBDynamicGrid: Add OnSelectEditor event. Allows editor panel to be dynamically
790 >   determined.
791 >
792 > 5. IBDynamicGrid: Recompute column widths after dataset closed and re-opened.
793 >
794 > 6. IBLookupCombo: LazUTF8 added to uses clause to avoid compilation problems post
795 >   lazarus 1.6.0
796 >
797 > 7. IBControls. Removed "runtime" from list of paths to avoid "multiple packages"
798 >   compilation error.
799 >
800 > IBX Change Log  version                                 (1.4-1) Tue, 17 May 2016 09:14:51 +0100
801 >
802 > 1. No character set specified for connection: when a text blob is retrieved, the
803 >  character set is determined by looking up the native character set using then
804 >  Firebird API. Otherwise a text mode blob is assumed to have the same character
805 >  set as the connection.
806 >
807 > 2. TIBGUIInterface: this is an internal interface. Minor type changes to allow
808 >   for Login Dialog returing a change to the database path.
809 >
810 > 3. Design Time Database and Server login Dialogs now allow the Database Name/Server Name
811 >   to be changed from that given in the TIBDatabase/TIBServer component and for the
812 >   entered value to be saved on a project specific basis (design time only).
813 >
814 > 4. IBDynamicGrid: TDBLookupCellEditor now compares its DataFieldName with the
815 >   column fieldname. If they are the same then it is acts as a look up for the KeyValue
816 >   Otherwise, it sets the column text to the selected ListField Value.
817 >
818 > 5. IBDynamicGrid: Only visible columns are now taken into account When recalculating
819 >   column width.
820 >
821 > 6. IBLookupComboEditBox: Fix error with autocomplete query when a RelationName is given
822 >   and a case insensitive search is requested.
823 >
824 > 7. IBDynamicGrid: No longer ignores notifications removing Column Totals controls
825 >   or column ListSource.
826 >
827 > 8. IBQuery: no longer performs unnecessary refresh of SQL Text (and hence avoids an
828 >   unprepare) when closing and the text has not changed.
829 >
830 > 9. IBSQL: Base the cursor name on a GUID instead of a hexstr version of the class pointer.
831 >   Less likely to cause a cursor re-use error on Windows.
832 >
833 > 10.SV5IPC: include workaround for OSX. FPC 3.0.0 has broken ipc module for darwin.
834 >   Expected to be fixed in 3.0.2. Hence workaround only applies to 3.0.0.
835 >
836 > 11. TIBTreeView: Guard against nil destination on record changed
837 >
838 > 12. AnsiString Code page support: TIBStringField.AsString and TIBMemoField.AsString now return a
839 >    string type with the code page set to reflect the returned field encoding after
840 >    Firebird driver transliteration, if any.  FPC 3.0.0 onwards only. Behaviour unchanged for
841 >    earlier versions.
842 >
843 > 13. AnsiString Code page support: Assigning to TIBStringField.AsString and TIBMemoField.AsString
844 >    will now result in transliteration to the code page specified for the Firebird driver
845 >    if the assigned string has a different code page. FPC 3.0.0 onwards only.
846 >
847 > 14. TIBDatabase: new property UseDefaultSystemCodePage. When set any lc_ctype parameter
848 >    is ignored and the lc_ctype value, when the database is opened, is set to align with
849 >    the DefaultSystemCodePage (FPC 3.0.0 onwards). Normally, this is what you want and should ensure
850 >    platform independence. Note: this applies to FPC 3.0.0 and earlier versions. Pre FPC
851 >    3.0.0, when this property is true, the lc_ctype is UTF8 except under windows when
852 >    the GETACP is used to determine the Windows code page.
853 >
854 > 15. TIBDatabase: new property DefaultCharSetName. This is the Firebird character set
855 >    name used as the lc_ctype when the database was opened. Only valid while the
856 >    Database is connected.
857 >
858 > 16. TIBDatabase: new property DefaultCodePage (FPC >=3.0.0 only). This is the codepage
859 >    id that corresponds to the DefaultCharSetName.
860 >
861 > IBX Change Log  version                          (1.4-0) Mon, 15 Feb 2016 14:44:24 +0000
862 >
863 > 1. Unix: If Firebird Embedded Server shared object is loaded and a local database
864 >   path is given and database attach fails due to access permission issues on the
865 >   temp directory or security database, then the attach is retried with "localhost:"
866 >   prefixing the databasename. This should avoid problems when the database has to
867 >   be accessed by a local (e.g. classic) server and libfbembed is used.
868 >
869 > 2. Windows: revised search order for Firebird DLL:
870 >     i.   The Firebird Embedded Server in the application Directory.
871 >     ii.  If the FIREBIRD environment variable is set then the directory this
872 >          points to is searched for the FB Client DLL and then then underlying
873 >          "bin" directory.
874 >     iii. Registry Key HKEY_LOCAL_MACHINE\SOFTWARE\Firebird Project\Firebird Server\Instances
875 >          is used to locate the Firebird installation directory and the underlying
876 >          "bin" directory is searched for the FB Client DLL.
877 >     iv.  The Default installation directories C:\Program Files\Firebird\Firebird_2_x
878 >          are searched for the FB Client DLL.
879 >     v.   The PATH Environment variable is used to search for the FB Client DLL.
880 >     vi.  Finally the  PATH Environment variable is used to search for IBASE.DLL.
881 >
882 > 3. New Component: TIBXScript. This is an ISQL compatible SQL script execution engine.
883 >   See doc/readme.scriptengine and example applications.
884 >
885 > 4. New Component: TIBlocalDBSupport. This is a TIBDatabase support component intended to
886 >   simplify the use of the embedded firebird server on both Linux and Windows platforms.
887 >   See dpc/readme.localdatabase and example applications.
888 >
889 > 5. IBDynamicGrid: Reordering on column header click should now also work for
890 >   dynamic columns.
891 >
892 > 6. ISQLMonitor: (Windows only). Mutex added to TMultilockGate to avoid race condition
893 >   between incrementing/decrementing the lock count and signalling the event.
894 >
895 > IBX Change Log  version           (1.3-2) Tue, 26 Jan 2016 14:39:54 +0000
896 >
897 > 1.3.2 was never formally released and only made available as beta copies.
898 >
899 > 1. DBControlGrid,IBDynamicGrid: Ignore down arrow and up arrow in TCustomMemo
900 >
901 > 2. IBDynamicGrid: Now deals correctly with a single column grid which has no indicator and autosize column
902 >
903 > 3. IBLookupComboEditBox: reset timer on each key press - avoids timer going off too early
904 >
905 > 4. IBDynamicGrid: Call event OnUpdateSortOrder even when aliasname not found in dataset
906 >   i.e. when it is a calculated field
907 >
908 > 5. IBDynamicGrid: Fix problem selecting a different row when expanded row at end of grid.
909 >   This problem was due to a race condition between recalculating row heights and
910 >   determining which row was selected by the mouse click. The row height calculation
911 >   is now deferred by an extra trip round the message loop allowing the row to
912 >   be always calculated on the current grid layout rather than risking it being
913 >   calculated on the grid layout after the expanded row has been shrunk.
914 >
915 > 6. IBLookupComboEditBox: avoid race condition between cm_killfocus and cm_exit on
916 >   Windows.
917 >
918 > 7. TIBStringField: Now has two new public properties: CharacterSetName: string and CharacterSetSize: integer;
919 >   These properties allow the (Firebird) character set name for the field and the max number of bytes per character
920 >   to be determined at runtime. See doc/readme.charactersets.html.
921 >
922 > 8. TIBWideStringField: This is a new field type with the same additional public properties as above and subclassed from
923 >   TWideStringField. This field type is used with the character size reported by Firebird is two. See doc/readme.charactersets.html.
924 >
925 > 9. TIBMemoField and TIBWideMemoField: new field types with the same additional public properties as above and subclassed from
926 >   TMemoField and TWideMemoField respectively. These field types are used with Blob subtype 1 and a characterset size of
927 >   1, 3 or 4 (TIBMemoField) or 2 (TIBWideMemoField). See doc/readme.charactersets.html.
928 >
929 >   Both also have a new published property "DisplayTextAsClassName". If false (default) the displaytext is generated
930 >   from the blob text by truncating the string to the displaywidth (in characters not bytes). A displaywidth of zero
931 >   implies no truncation.
932 >
933 > 10. IBLookupComboEditBox: Force autocomplete when EditingDone called and timer active.
934 >
935 > 11. IBDynamicGrid: Call DataSet.Append when entering edit mode and dataset empty and not in insert state
936 >   (avoids "Not in Edit Mode" error).
937 >
938 > 12. IBDynamicGrid: Correctly resize grid when one column width plus indicator.
939 >
940 > 13. IBDynamicGrid: Ensure Editor Panel has focus when shown - avoids Windows API calling
941 >    DBGrid.DoExit on subsequent mouse click (e.g. on child control such as a tabbed page control.
942 >
943 > 14. IBDynamicGrid: ignore up, down tab and return when editorpanel open and focus in a TCustomGrid descendent.
944 >
945 > 15. DBControlGrid: Stop flashing grid when dataset closed and then re-opened while DisabledControls
946 >
947 > 16. IBQuery: Bug fixed that prevented SQL being set programmatically once the Parser had been invoked.
948 >
949 > 17. IBCustomDataSet: On close, parser is now freed and Select SQL reverts to value before DataSet Opened.
950 >
951 > IBX Change Log  version        (1.3-1) Sat, 18 Jul 2015 13:30:50 +0100
952 >
953 > 1.   OnCloseUp Event Handler added to TDBLookupProperties
954 >
955 > 2.   IBDynamicGrid: Call to OnEditorPanelHide is now last editor hide action - avoids
956 >     problem with row size when exception is called.
957 >
958 > 3.   IBLookupComboEditBox: Force pending autocomplete on combobox exit.
959 >
960 > 4.   IBDynamicGrid and DBControlGrid: Keyhandler now ignores up, down, escape and return keys if
961 >     in a TCustomComboBox and ignores return key if in a TCustomMemo
962 >
963 > 5.   IBLookupComboEditBox: Ensure that KeyValue is set correctly when full text
964 >     keyed in i.e. when autocomplete not performed
965 >
966 > 6.   Cleanup of "Uses" clauses and add console mode support. IBX should now support
967 >     console mode applications with all LCL required functions (builtin dialogs and
968 >     cursor management) centralised in the  IBDialogs unit. As long as "IBDialogs" is
969 >     not included in your project, IBX should compile and link with a console mode program.
970 >     See consolemode example and its "readme"for further guidence. DO NOT add the ibexpress package to a
971 >     console mode application or the IDE will automatically assume that your
972 >     application is GUI based. Instead, you should include the ibexpressconsolemode package.
973 >
974 >     IMPORTANT NOTE: IBDialogs must be included in GUI applications in order
975 >     to use the built in dialogs and cursor management. IBDialogs is
976 >     included by default if "ibexpress" is in your project source's "uses" clause.
977 >     This should be the case for all projects created through the IDE. This is why
978 >     you do not want to add the ibexpress package to console mode applications. The
979 >     ibexpressconsolemode package has been created to allow console mode programs
980 >     to avoid adding LCL dependencies when using IBX, while still having the
981 >     unit search paths set up correctly.
982 >
983 >     Existing users should check to ensure that the "ibexpress" unit is included in
984 >     each project's source file (*.lpr).
985 >
986 >     You may find that in order for the IDE to recognise that ibexpressconsolemode
987 >     exists, you have to first open the package in the IDE and then close it. This
988 >     adds it to the most recently accessed packages list. To make it permanently
989 >     available, add the package name to lazarus' staticpackages.inc file.
990 >
991 >         Thanks to Julio Jiménez for suggesting support of console mode.
992 >
993 > 7.   SQL Parser can now accept quoted strings that include new lines
994 >
995 > 8.   IBDynamicGrid: Lookup Cell Editor - the cursor is now positioned at end
996 >     of text on start of edit. This is particularly useful when tabbing to a
997 >     column and then inserting text.
998 >
999 > 9.   New Examples provided for IB Services and ISQLMonitor.
1000 >
1001 > 10. Fix error when writing to blob streams that recorded only the last buffer
1002 >    write in the blob stream. In most cases, this did not cause a problem as the
1003 >    IB Blob Stream is written in a single write. However, with the TDBImage, write
1004 >    of a graphic type prefix was lost which caused a problem when the image could
1005 >        not be automatically recognised.
1006 >
1007 > 11. Improve generation of random cursor names in TIBSQL - avoid risk of "cursor
1008 >    already open" errors due to random numbers used for the cursor name being identical.
1009 >
1010 > 12. IBTable: corrected error that could result in an "Index out of bounds" error
1011 >    when opening the table and the Primary Key is the last or only column in the
1012 >    table. Thanks to Rick Hoover for the fix.
1013 >
1014 > 13. Fix TIBDatabase initialisation of lc_ctype under unix. Set to "UTF8" instead
1015 >    of "UTF-8", and update list of available database character sets. Existing
1016 >    users should check the current lc_ctype setting in their applications.
1017 >
1018 > IBX Change Log  version  (1.2-4) Sat, 09 May 2015 12:38:29 +0100
1019 >
1020 > 1.  Firebird Services: avoid List Index error when opening a service with an
1021 >    empty Params property.
1022 >
1023 > 2.  IBControls: Fix problem with new link mechanism introduced in 1.2.3.
1024 >    Link now set up in Loaded method - avoids occasional failure to apply
1025 >    SQL markup on initial open.
1026 >
1027 > 3.  "Employees" example performance improvements when scrolling.
1028 >
1029 > 4.  DBControlGrid: Correctly handle edit panel removal when panel is child control of a
1030 >    TFrame. Force recaching of selected frame to avoid GTK race (results in a
1031 >    random image cached).
1032 >
1033 > 5.  DBControlGrid: Should now react to changes in panel height at run time.
1034 >
1035 > 6.  IBDynamicGrid: Redraws rows below on panel editor hide - avoids blank space at end of grid  
1036 >    even when further rows exist.
1037 >
1038 > 7.  DBControlGrid: DefaultRowHeight is no longer a published property as it should
1039 >    always be derived from panel height and setting this property can cause confusion.
1040 >    Note for existing projects: to avoid a missing property error at run time,
1041 >    each form using the DBControlGrid must be opened, updated and saved in the IDE
1042 >    in order to remove the property value from the lfm.
1043 >
1044 >
1045 > IBX Change Log  version (1.2-3) Tue, 14 Apr 2015 14:11:17 +0100
1046 >
1047 > 1.  TIBStoredProc. Prepare now called by ParamByName to avoid need to always
1048 >    call Prepare before setting parameter values.
1049 >
1050 > 2.  Error message on ParamByName (all cases) not found now includes name of missing parameter.
1051 >
1052 > 3.  Code tidyup and more robust handling of dsql information result vector.
1053 >
1054 > 4.  Support for centralised handling of transaction status changes. TIBTransaction
1055 >    has been given additional events "AfterEdit", "AfterInsert", "AfterDelete", "AfterPost"
1056 >    and "AfterExecQuery". The first three are called after the same event is called
1057 >    for an IBCustomDataSet descendent using the Transaction. The fourth is called
1058 >    after a call to TIBSQL.ExecQuery, again using this transaction. These new events
1059 >    enable monitoring of transaction status changes for a given transaction to be
1060 >    handled in a single place. For example, when a change to the dataset occurs
1061 >    an indicator can be set that shows the user that in order to save changes,
1062 >    the transaction should be committed.  Rather than doing this per dataset, this
1063 >    can now be done per transaction.
1064 >
1065 > 5.  TDataSet.CheckBrowseMode automatically posts changes to the current row when
1066 >    the dataset is scrolled. However, any changes to the current row are, by default,
1067 >    discarded when the dataset is closed. TIBDataSet, TIBQuery and TIBTable now
1068 >    have a new property "DataSetCloseAction" that adds automatic posting of changes
1069 >    on dataset close. If this property is set to dcDiscardChanges (default) then the
1070 >    behaviour is unchanged from previous versions. if the value is set to dcSaveChanges
1071 >    then IBX will attempt to post any unsaved changes before the dataset is closed
1072 >    (and after the BeforeClose event handler is called). The exception is when the
1073 >    dataset is being closed as a result of a transaction rollback. In this case,
1074 >    no action is taken and any unsaved  changes are discarded. This avoids both
1075 >    unnecessary overhead and the risk that a validation error may occur in the Post
1076 >    raising an exception and thereby preventing a rollback.
1077 >
1078 > 6.  String Field sizes and Display Widths should now be correct for multi-byte character sets.
1079 >    In earlier versions, the Display Width was set to the maximum byte width rather than the character
1080 >    width. Display Widths are now corrected by dividing by the max byte width per character.
1081 >    For UTF8 character sets, the byte width is four and hence the Display Width will be
1082 >    the byte width divided by 4. The byte width of each character set is determined
1083 >    dynamically when the database connection is estabished from the RDB$CHARACTER_SETS
1084 >    system table. (see also http://bugs.freepascal.org/view.php?id=27766).
1085 >
1086 > 7.  SQLParser will now correctly parse SQL Text which contains ':' within quoted string.
1087 >
1088 > 8.  IBLookupComboEditBox: List should now always be restored to full list when the
1089 >    control loses focus. Default Key press default interval reduced to 200ms.
1090 >
1091 > 9.  DBControlGrid: Ensure that selection is changed to newly appended row, even
1092 >    when dataset rows are less than visible rows.
1093 >
1094 > 10. IBDynamicGrid: Editor Panel is not shown on indicator click if Datasource
1095 >    does not exist or DataSet is empty. More responsive on dataset open. New event
1096 >    OnRestorePosition. Column sort disabled if no header row.
1097 >
1098 > 11. IBTreeView: improved handling of response to "Add Node". Avoid scrolling dataset
1099 >    while dataset state is dsInsert. Avoids posting errors.
1100 >
1101 > 12. IBControls: New mechanism for distributing UpdateSQL and UpdateParams events. This is to
1102 >    avoid conflict with DisableControls/EnableControls with Master/Detail linked tables.
1103 >
1104 > 13. IBLookupComboEditBox: Now avoids SQL Errors when combo box text contains single quotes.
1105 >
1106 > 14. TIBDataSet and TIBQuery: new Event - OnValidatePost. This event has been introduced
1107 >    to solve a specific problem. That is when the dataset cursor is moved (e.g. by
1108 >    a grid mouse click and the current row is being edited or inserted. In this case, TDataset
1109 >    always "posts" the current record regardless or whether or not it may be more appropriate
1110 >    to cancel any changes; the post occurs before the "BeforeScroll" event fires due to the way the
1111 >    "MoveBy" function is implemented by TDataSet. The OnValidatePost event is called
1112 >    as the first action of the "Post" method and allows the handler to convert the Post
1113 >    into a Cancel if that is the appropriate action on moving to a different row. This is
1114 >    achieved by returning with "CancelPost" argument set to true. Note that an exception could be
1115 >    raised here, but it may still be more appropriate to validate a post and signal
1116 >    a problem in the "BeforePost" event handler. See readme.automaticposts.xhtml)
1117 >
1118 > 15. On Unix derived systems, the Firebird library name can now be given as a colon
1119 >    separated list. Each library name on the list is tried in turn, in left to right
1120 >    order with the first found being used as the firebird library. By default, on Linux,
1121 >    the library name list is 'libfbembed.so.2.5:libfbembed.so.2.1:libfbclient.so.2'. This can be
1122 >    overidden by the FBLIB environment variable or the OnGetLibraryName function.
1123 >
1124 >    Note: when using the libfbembed.so, if you prefix the database name with "localhost:"
1125 >    then it will still attempt to access the database via the Firebird Server and will
1126 >    require a username and password. If only the pathname is given, then the username
1127 >    and password should be omitted and the unix file permissions are used to grant
1128 >    access.
1129 >
1130 > IBX Change Log  version  (1.2-2) Sat, 14 Mar 2015 11:35:04 +0000
1131 >
1132 > 1.  A new IBControl - TDBControlGrid has been added. TDBControlGrid a lookalike
1133 >    rather than a clone for the Delphi TDBCrtlGrid. TDBControlGrid is a single column grid
1134 >    that replicates a TWinControl - typically a TPanel or a TFrame in each row. Each row
1135 >    corresponds to a row of the linked DataSource. Any data aware control on the
1136 >    replicated (e.g.) TPanel will then appear to have the appropriate value for the row.
1137 >
1138 > 2. As suggested by Julio Jiménez, a new property "SQLHourGlass" has been added to TIBDatabase.
1139 >   When set to false (default true), the Hour Glass cursor is supcpressed and no cursor change
1140 >   takes place during database access. This may be useful when there are performance issues with
1141 >   the change of cursor. Setting the property to false suppresses the change of cursor.
1142 >
1143 > 3. As suggested by Julio Jiménez, a new property "AutoCommit" has been added to TIBDataSet, TIBQuery
1144 >   and TIBTable. When set to acCommitRetaining (Default: acDisabled), a call is made to
1145 >   Transaction.CommitRetaining immediately after every Post or Delete. This has the effect of
1146 >   making all changes permanent immediately rather than when the transaction is explicitly
1147 >   committed.
1148 >
1149 > 4. Experimental support for the Firebird 3 SQL_BOOLEAN type has been added while still
1150 >   using the legacy Firebird API. Thanks to Gabor Boros for helping to test this feature.
1151 >
1152 > IBX Change Log  version      (1.2-1) Fri, 13 Mar 2015 11:14:15 +0000
1153 >
1154 > Development version only.
1155 >
1156 > IBX Change Log  version   (1.2-0) Thu, 26 Feb 2015 10:34:04 +0000
1157 >
1158 > 1. An internal select SQL Parser is now available for TIBCustomDataset descendents.
1159 >   This is typically used during an "OnBeforeOpen" event handler to manipulate the
1160 >   "Where" and "Having" clauses to implement user specified filters of arbitrary
1161 >   complexity.
1162 >
1163 > 2. A new Component Palette entry "Firebird Data Controls" is now available. This has
1164 >   three new data aware controls dependent on IBX and which make use of the SQL Parser.
1165 >   These are:
1166 >
1167 >   - TIBLookupComboEditBox
1168 >   - TIBDynamicGrid
1169 >   - TIBTreeview
1170 >
1171 >   TIBLookupComboEditBox is a TDBLookupComboBox descendent that implements "autocomplete"
1172 >   of typed in text and "autoinsert" of new entries. Autocomplete uses SQL manipulation
1173 >   to revise the available list and restrict it to items that are prefixed by the
1174 >   typed text (either case sensitive or case insensitive). Autoinsert allows a
1175 >   newly typed entry to be added to the list dataset and included in the available
1176 >   list items.
1177 >
1178 >   TIBDynamicGrid is a TDBGrid descendent that provides for:
1179 >   - automatic resizing of selected columns to fill the available row length
1180 >   - automatic positioning and sizing of a "totals" control, typically at the
1181 >     column footer, on a per column basis.
1182 >   - DataSet resorting on header row click, sorting the dataset by the selected column.
1183 >     A second click on the same header cell reversed the sort order.
1184 >   - Support for a "Panel Editor". That is on clicking the indicator column, the row
1185 >     is automatically expanded and a panel superimposed on it. The panel can have any
1186 >     number of child controls, typically data aware controls with the same datasource
1187 >     as the grid allowing for editing of additional fields and more complex editors.
1188 >   - Reselection of the same row following resorting.
1189 >   - A new cell editor that provides the same functionality as TIBLookupComboEditBox.
1190 >     Its properties are specified on a per column basis and allows for one or more
1191 >     columns to have their values selected from a list provided by a dataset.
1192 >     Autocomplete and autoinsert are also available. The existing picklist editor
1193 >     is unaffected by the extension.
1194 >
1195 >   TIBTreeView is a data aware TCustomTreeView.
1196 >
1197 > 3. When getting a field value using FieldByName.AsVariant, an SQL_INT64 with a
1198 >   zero scale will no longer return an error. An Int64 will be returned instead.
1199 >
1200 > 4. TIBTransaction now has events for Before and After Transaction End and a new function
1201 >   "GetEndAction" allowing the EndAction to be accessed by these event handlers.
1202 >
1203 > 5. TIBQuery can now handle correctly queries which contain the same keyword parameter
1204 >   repeated multiple times.
1205 >
1206 > 6. TIBUpdateSQL will no longer return an error when "RowsAffected" is <> 1. This error
1207 >   check used to get in the way of using Stored Procedures, and "Update or Insert"
1208 >   statements.
1209 >
1210 > 7. Insert, Modify and Delete property Editors now support Query Generation from
1211 >   Stored Procedures.
1212 >
1213 > 8. Three new examples illustrate the use of the new IB Controls
1214 >
1215 >
1216 > IBX Change Log  version  (1.1-0) Mon, 07 Jul 2014 14:01:07 +0100
1217  
1218   1. TIBXSQLVAR code clean up and optimisation to improve client side "prepare" and parameter
1219     setting performance. See "readme.field+param.names in the doc folder.(Thanks to

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