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Revision 7 by tony, Sun Aug 5 18:28:19 2012 UTC vs.
Revision 263 by tony, Thu Dec 6 15:55:01 2018 UTC

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1 < IBX Change Log  version >  (1.0-1) Sun, 05 Aug 2012 19:28:14 +0100
1 > IBX Change Log  version                   (2.3-2) Wed, 05 Dec 2018 12:19:23 +0000
2 >
3 > 1. Remove need to check for IsMultiThread by providing access to GUI timers via
4 >   IBGUIInterface. Note: master/detail delay timer does not apply to console
5 >   mode apps.
6 >
7 > 2. TIBCustomDataSet: SQLParser ignored if it does not contain a valid select
8 >   statement. This avoids problems if "Execute Block" is used as the Query.
9 >
10 > 3. IBSQLParser now uses the common SQL tokeniser from fbintf. This replaces the
11 >   internal SQL tokeniser routines.
12 >
13 > 4. IBSQLParser: new property NotaSelectStmt. Set to true if SQL fails to parse
14 >   as a select statement, with or without CTEs.
15 >
16 > 5. IBSQLParser: parser now recognises the "ROWS" clause.
17 >
18 > 6. TIBXScript now uses the common SQL tokeniser from fbintf. This replaces the
19 >   internal SQL tokeniser routines.
20 >
21 > 7.  Fix error in TIBXScript processing of "set" statements. This avoids exceptions
22 >    being raised for valid set statements processed by a data formatter.
23 >
24 > 8. New published property for TIBDatabase and TIBXServicesConnection. This is
25 >   FirebirdLibraryPathName: string. If not empty it is used to explicitly specify
26 >   the path of the Firebird Library used by the database/services connection.
27 >
28 > 9. New read only public property for TIBDatabase and TIBXServicesConnection. This
29 >   is FirebirdAPI and returns the IFirebirdAPI interface used by the database/
30 >   services connection.
31 >
32 > 10.SQL Property editors now quote parameter names if "Quote identifier" is selected
33 >   or param name is not a valid SQL identifier.
34 >
35 > 11. IBLookupComboEditBox: In Lazarus 2.0, TDBLookupComboBox takes a more restrictive
36 >    view of whether the text box should be editable when no DataSource is specified.
37 >    TIBLookupComboEditBox has been updated to workaround this problem. As long as
38 >    ReadOnly is false, the text box is editable when no DataSource is specified.
39 >
40 > 12. AllowUseOfFBLIB is now set to "true" at design time. This is to allow use of
41 >    the FBLIB environment variable. If you do not want to permit this then you
42 >    must modify the Register procedure in the design/IBDBReg.pas unit to remove
43 >    this setting.
44 >
45 > IBX Change Log  version                 (2.3-1) Thu, 25 Oct 2018 14:39:45 +0100
46 >
47 > 1. IBCustomDataset: replace deprecated function ValidUTF8String with call to
48 >   Utf8EscapeControlChars
49 >
50 > IBX Change Log  version                (2.3-0) Mon, 16 Apr 2018 09:48:06 +0100
51 >
52 > IMPORTANT: the source code tree has been re-organised for IBX 2.3. Please remove
53 > all previous copies of the IBX source code tree before installing this release.
54 >
55 > The IBX packages used by most users have not changed, with one exception. The
56 > IBServices unit has been moved to the package iblegacyServices.lpk. To continue
57 > to use the IBServices unit in your applications, please add the iblegacyServices
58 > to the list of dependencies. To do this, open the Project Inspector and select
59 > Add->New Requirement and select "ibLegacyServices" from the list of available
60 > packages.
61 >
62 > 1. New unit IBXServices. The IBXServices unit is a re-architectured update of
63 >   the IBServices unit providing what is intended to be a clearer and easier to
64 >   use set of IB Services components. See Chapter 10 of the IBX User Guide for
65 >   more information and the guide to "Firebird Service Management Using IBX".
66 >   As indicated above, the legacy services components are still available and
67 >   provided in a separate package. There is no need to update working applications
68 >   using the older versions except for an additional package dependency.
69 >
70 > 2. The IBX packages and source code tree have been re-organised in an attempt to
71 >   finally get rid of the "duplicate ppu" warnings. This re-organisation should
72 >   not affect existing users. Section 2.3 of the IBX User Guide describes the
73 >   new set of IBX packages.
74 >
75 > 3. The ibx/examples/DBAdmin and the ibx/examples/services example have been
76 >   updated to use the new Services API components.
77 >
78 > 4. The iblocal package has been updated to use the new Services API components.
79 >
80 > 5. procedure SetAutoAdmin; in the new IBX Services this method is now a member of
81 >   TIBXSecurityService. It had been wrongly classified in the previous version
82 >   as a per database configuration item. It is global to a server and hence
83 >   correctly positioned as part of the Security Package. In the DBAdmin example,
84 >   the setting has moved to the mappings page.
85 >
86 > 6. TIBXScript: IgnoreCreateDatabase added. If true then CREATE DATABASE statements
87 >   are ignored.
88 >
89 > 7. TIBDatabase: DropDatabase now ensures that all transactions have been properly
90 >   closed before the database is dropped. Before and After Disconnect event handlers
91 >   are also fired.
92 >
93 > 8. TIBTransaction: OnStartTransaction event now fires every time the transaction
94 >   is started and not just the first time.
95 >
96 > 9. IBDataOutput: Use FormatFloat for all performance statistics to avoid platform
97 >   depenendency with comp type.
98 >
99 > 10. IBDataOutput: select query data output is now sent to stdout instead of stderr.
100 >
101 > 11. TIBDatabase: Remove regression. If a user login dialog changes the DatabaseName
102 >    then this is recognised and not ignored.
103 >
104 > 12. TIBDataSet, TIBQuery, TIBTable: additions:
105 >    function GetRowsAffected(var SelectCount, InsertCount, UpdateCount, DeleteCount: integer): boolean;
106 >    function GetPerfStatistics(var stats: TPerfCounters): boolean;
107 >    property EnableStatistics: boolean read FEnableStatistics write SetEnableStatistics;
108 >
109 >    GetRowsAffected returns the affected row counts from the last insert/update/delete
110 >    if EnableStatistics = true then GetPerfStatistics returns the current stats
111 >    counters for the select query. Note: stats accumulate after each fetch from
112 >    the database. To get total query cost after open, call the "Last" method
113 >    and then GetPerfStatistics.
114 >
115 >    See ibx/examples/consolemode for an example of the use of GetPerfStatistics
116 >
117 > 13. TIBExtract: Identity columns DDL. "Start with clause" now correctly encapsulated
118 >    in parenthesises.
119 >
120 > 14. TIBExtract: new published property "AlwaysQuoteIdentifiers". If true then in dialect 3
121 >    SQL identifiers are always delimited by double quotes. If false, then they are
122 >    only delimited if the identifier is a reserved word, contains lower case or special
123 >    characters. Set this property to true to retain previous behaviour.
124 >
125 > 15. Insert SQL Property Editor. In Insert Returning Clause, Identity column names
126 >    are now inserted in double quotes if not Reserved Words or valid SQL Identifiers.
127 >
128 > 16. TIBDataSet, TIBQuery, TIBTable: addition:
129 >       property MasterDetailDelay: integer {defaults to zero}
130 >
131 >    When non-zero and the dataset is a detail table referencing a master table
132 >    through either a MasterSource (TIBTable) or a DataSource (TIBDataSet, TIBQuery)
133 >    then a synchronisation delay is added (in milliseconds) between the master
134 >    row changing and the detail dataset being re-opened. If the master dataset
135 >    is scrolled before the delay expires then the delay is reset. This can be used
136 >    to avoid performance overheads when scrolling through a large master dataset.
137 >
138 >    Note: uses fptimer and hence requires a thread manager. Under Linux the
139 >    chreads unit must be included in your project. TTimer is not used in order
140 >    to avoid an LCL dependency. Requires FPC 3.0.2 or later.
141 >
142 > 17. TIBExtract: User role grants now excluded when etGrantsToUser not specified
143 >    with Extract Option eoDatabase.
144 >
145 > 18. TIBLookupComboEditBox: Workaround added for https://bugs.freepascal.org/view.php?id=33428
146 >    When a deLayoutChanged event is reported on the ListSource dataset, the
147 >    combobox text is updated. This allows a listsource (detail) to be in a Master/Detail
148 >    relationship with the control's datasource (master).
149 >
150 > 19. TIBExtract: Full BigInt value range now supported for Generators/Sequences.
151 >
152 > 20. TIBExtract: Select Procedures (Procedure type 1) now include "SUSPEND;" clause in their
153 >    stubs. Pedantic fix really, as procedures output in dependency order anyway.
154 >
155 > 21. TIBExtract: Package Headers and Package Bodies are now included in the extracted
156 >    DDL (Firebird 3 and later only).
157 >
158 > 22. TIBLookupComboBox Autocomplete Fixes:
159 >    i. Only appended text is now selected after autocomplete.
160 >    ii. Uppercase keys no longer ignored for autocomplete.
161 >    iii. Retain Prefix case is now honoured correctly.
162 >    iv. When a DataSource is assigned, typing after autocomplete now extends prefix
163 >        before autocomplete performed. i.e. behaviour now the same as when
164 >        no DataSource assigned.
165 >
166 > 23. TIBXScript: Single Line Comments starting with '--' are now ignored when occurring
167 >    between SQL statements.
168 >
169 > 24. TIBExtract: New published property CaseSensitiveObjectNames. If false (default) then
170 >    ObjectNames are converted to upper case before matching against metadata object
171 >    names, unless the objectname is delimited by double quotes, in which case, the
172 >    double quotes are removed and the remaining string is used (unmodified) to match
173 >    against the metadata object name.
174 >
175 >    If true then the ObjectName is used as is without modification and matched
176 >    against the metadata object name. No attempt is made to remove double quotes.
177 >
178 > 25. TIBExtract: New Extract Types: etDatabaseTriggers and etDDLTriggers. When used
179 >    with eoTrigger, these extract types can be used to select only Database Triggers,
180 >    or DDL Triggers or both. Ignored when etTable or etTrigger included in Extract Types.
181 >
182 > 26. TIBXScript: If an exception occurs during the processing of a statement, the
183 >    statement separate character is now reset to the default (';').
184 >
185 > 27. TIBDatabase: Reconnect method added and used by TIBXScript for reconnect.
186 >
187 > 28. TIBXScript: Transaction is no longer automatically reactivated immediately processing
188 >    a commit or reconnect statement and instead activated only when next SQL statement
189 >    is executed.
190 >
191 > 29. TIBSQL.HasField should no longer generate and exception when the field does not exist.
192 >
193 > 30. TIBXScript: case insensitive regex now used when matching statements instead of
194 >    converting statement to upper case.
195 >
196 > 31. TIBExtract: metadata comments now supported. New published property
197 >    IncludeMetaDataComments (default true). If true then metadata comments included
198 >    in extracted DDL. New Extract Object member eoComments. This may be used with
199 >    ExtractObject method to list all metadata comments.
200 >
201 > 32. TIBExtract: ListObjectNames method added.
202 >
203 > 33. Updated Database component editor to support additional connection string
204 >    types.
205 >
206 > IBX Change Log  version  (2.2-0) Wed, 28 Feb 2018 10:57:45 +0000
207 >
208 > NOTE: THE LOCATIONS OF SOME OF THE UNIT DIRECTORIES HAS CHANGED FROM IBX 2.1. THIS IS TO
209 > AVOID DUPLICATE PPU WARNINGS. PLEASE REMOVE EARLIER VERSIONS OF IBX BEFORE INSTALLING THIS
210 > RELEASE.
211 >
212 > NOTE: THE DBADMIN DEMO REQUIRES THAT THE MemDSLaz PACKAGE IS INSTALLED IN THE LAZARUS IDE.
213 >
214 > 1. IBExtract: Identity columns - add additional check for null column for generator name.
215 >
216 > 2. IBCustomDataSet: Insert and Modify (Update) queries now recognise and process SQL RETURNING clauses.
217 >   The main use for this is for Firebird 3 Identity columns (see IBXDocumentation 6.6.8 for further
218 >   information). However, this is also a very useful mechanism for returning updated computed by
219 >   column values. Values returned as a result of executing an Insert or Update statement
220 >   replace existing values in the current row for each corresponding column.
221 >
222 >   Previously, if a dataset's select query included read only (computed by) fields then
223 >   an automatic row refresh was performed after an insert or update query had been processed,
224 >   irrespective of the setting of the "ForcedUpdates" property. This has changed such
225 >   that an automatic refresh is no longer performed if an insert or update query contains
226 >   a returning clause that updates one or more fields on the current row. A full row
227 >   refresh is only performed if (a) ForcedRefresh is true or (b) the query does not return any
228 >   field values and the select query contains read only fields. Use of Insert/update
229 >   returning should be significantly more efficient than executing a refresh query.
230 >
231 >   This behaviour change is intended to be backwards compatible and there should be no need to change
232 >   existing programs, other than to improve performance by using the new capability.
233 >
234 > 3. IBCustomDataSet: DELETE...RETURNING queries are now also recognised. However, as
235 >   they are called when the dataset row is being deleted, there is no value in
236 >   updating the current record from the query result. Instead, a new event handler
237 >   "OnDeleteReturning" is provided. If a DELETE...RETURNING query is execute and
238 >   an OnDeleteReturning event handler is provided then it is called with the IResults returned
239 >   by the query. The event handler can then interrogate the query results and
240 >   perform whatever action is necessary. For example to confirm, to the user,
241 >   the deletion of a row with the returned values.
242 >
243 > 4. TIBTable: generated Insert and Update SQL now include a RETURNING clause for
244 >   any Computed By or Identity Columns. The IBTables example has been updated to
245 >   illustrate the computation of the employee Full Name on update.
246 >
247 > 5. TIBTable: The GeneratorField property is now published.
248 >
249 > 6. The InsertSQL property editor now shows Firebird 3 Identity columns separate from the Field List.
250 >   When InsertSQL is generated, the Identity columns are not included in the list of values to
251 >   be inserted. A RETURNING clause is added to the insert statement to return the value of
252 >   each Identity column after the insert is executed.
253 >
254 > 7. The Modify Property Editor now generates Update SQL with Computed By fields in Update..Returning clause.
255 >   Similarly Insert Property Editor now generates Insert SQL with Computed By fields in
256 >   Insert..Returning clause.
257 >
258 > 8. TIBGenerator: small performance improvement by not preparing query each time
259 >   a new value is generated.
260 >
261 > 9. TIBSQL: Free resources when transaction changed - ensures new transaction is used.
262 >
263 > 10. Property editors will now sync table name to a System Table when "Include System
264 >    Tables" is selected and the query is for a System Table.
265 >
266 > 11. Minor Performance improvement to handling of Date/Time types in IBX datasets. Field
267 >    values are no longer converted to milliseconds from TDateTime and then back again
268 >    to TDateTime (the conversion to milliseconds is the default TDataset approach).
269 >
270 > 12. Property Editors handling of Stored Procedures.
271 >    * Select and Refresh: only show a list of stored procedures that return multiple rows (proc type 1) and
272 >      which have a non-empty list of output parameters (i.e. stored procedures that may be used in a select
273 >      query).
274 >    * Modify and Insert: only show a list of stored procedures that return at most a singleton row (proc type 2).
275 >
276 > 13. IBStoredProc: Now supports Firebird 3 Package Names. A new published property PackageName
277 >    can be used to select a package. If non-empty, the stored procedure name is
278 >    expected to be a stored procedure defined in the specified package and the
279 >    generated SQL will be as required for a stored procedure located in a package.
280 >
281 > 14. Select, Refresh, Insert, Modify, Delete and TIBSQL SQL Property Editors now include
282 >    a "Package Name" drop down box to allow selection of a Firebird 3 Package from
283 >    which a stored procedure can be selected. With no package name selected, non-package
284 >    stored procedures are listed.
285 >
286 > 15. TIBXScript: turn off database login prompt when reconnecting - this avoids prompting
287 >    for password on reconnect.
288 >
289 > 16. TIBDatabase: use IAttachment for connection default character set id, code page
290 >    and character set name.
291 >
292 > 17. TIBDatabaseInfo: cache ODS Version information on first request in order to minimise
293 >    DB info lookups"
294 >
295 > 18. IBExtract: now supports DDL Triggers and Grants to DDL objects.
296 >
297 > 19. Add a property Editor for TIBUpdate.RefreshSQL.
298 >
299 > 20. IBUpdate: Ignore non-data (e.g. calculated) fields when assembling list of input
300 >    parameters. This stops an exception being raised when the field cannot be
301 >    located in the record buffer.
302 >
303 > 21. Property Editors now automatically include System Tables when opened and when the query table
304 >    is a System Table.
305 >
306 > 22. IBServices: SQRB and SRB buffers are now reset when service query throws an exception.
307 >    This avoids errors due to a stale SQRB or SRB being used for the next query.
308 >
309 > 23. IBServices: Service attach parameters now include "expected_db". This is used to
310 >    add the SPB item isc_spb_expected_db. This names a database using
311 >    an alternative Security Database (FB3 onwards) and allows (e.g. backup/restore) using such a
312 >    database. examples/services re-written to illustrate use of "expected_db".
313 >
314 > 24. IBServices: TIBControlAndQueryService.WriteNextChunk no longer ignores isc_info_svc_timeout.
315 >    This avoids truncated backups when the server returns a timeout (busy) response.
316 >
317 > 25. TIBDatabase: isc_dpb_page_size now supported as a database parameter when using TIBDatabase.CreateDatabase.
318 >
319 > 26. TIBDatabase: DatabaseName property may now be prefixed by $TEMP$ or $DATADIR$ for local
320 >    databasenames. These are respectively expanded to the local system's temp directory
321 >    (including trailing delimiter) or to a prescribed data directory (including
322 >    trailing delimiter). Under Unix systems the data directory is a hidden directory
323 >    in the user's home directory. The hidden directory name is either the string returned
324 >    from the SysUtils "Vendor Name" or "IBX" if empty. In either case prefixed by a '.'.
325 >    Under Windows, the directory is the same as the Data Directory as decribed
326 >    above but instead prefixed by the User's application data path. These may be
327 >    used to improve application portability for Personal Databases.
328 >
329 > 27. TIBTable: FieldDefs property is no longer published. Due to the use of TIBFieldDef
330 >    this has not worked for a long time and is not useful either. FieldDefs should be
331 >    managed using the Fields Editor as with any other dataset. To access the fields
332 >    editor for a TIBTable component, double click on the component. The fields editor
333 >    is then displayed.
334 >
335 > 28. TIBDatabaseInfo: new properties/function
336 >     * DateDBCreated (returns date/time database created)
337 >     * TransactionCount (returns no. of active transactions)
338 >     * GetDatabasePage(PageNo: integer) (returns contents of specified database page - SYSDBA only).
339 >     * PagesFree (Firebird 3 or later)
340 >     * PagesUsed (Firebird 3 or later)
341 >     * Encrypted (returns true if database encrypted. (Firebird 3.0.3 or later only)
342 >     * EncryptionKeyName (returns the name of the encryption key if any (Firebird 3.0.3 or later only)
343 >
344 > 29. IBServices classes now provided the decoded release number in the (array) property ServerVersionNo.
345 >
346 > 30. TIBSecurityService now supports display/modification of the User Admin Role (Firebird 2.5 and later).
347 >
348 > 31. TIBConfigService now has a procedure SetAutoAdmin(Value: boolean) to enable/disable
349 >    the automtic mapping of privileged OS users to the RDB$ADMIN role (Firebird 2.5 and later).
350 >
351 > 32. TIBBackupService: New Option - NoDBTriggers equivalent to -nodbtriggers switch introduced
352 >    in the gbak utility at V.2.1 to prevent database-level and transaction-level triggers from
353 >    firing during backup and restore.
354 >
355 > 33. Both TIBBackupService and TIBRestoreService now support backup/restore statistics options
356 >    for verbose output using the new property "StatisticsRequested".
357 >    see https://firebirdsql.org/file/documentation/release_notes/html/en/2_5/rnfb25-util-gbak.html#rnfb25-util-gbakstats
358 >
359 > 34. TIBRestoreService: now supports new options RestoreMetaDataOnly (Firebird 2.5 and later).
360 >
361 > 35. TIBOnlineValidationService component added to the IBServices and the "Firebird Admin"
362 >    palette. This uses the online validation feature added in Firebird 2.5. The
363 >    services's properties enable inclusion/exclusion of tables and indexes using
364 >    regular expressions. See.
365 >    https://firebirdsql.org/file/documentation/release_notes/html/en/2_5/rnfb25-apiods-api.html#rnfb25-apiods-api-onlinevalidation
366 >
367 > 36. IBServices: procedure TIBConfigService.SetNoLinger added to set no linger
368 >    option on a database.
369 >
370 > 37. TIBCustomService: Assign method implemented to allow copying of service login
371 >    context between service API components. "Detach" method now only detaches
372 >    service when last reference to the service interface detaches. Tidy up of
373 >    code for SetActive and Attach methods including password hiding.
374 >
375 > 38. TIBDatabase: new properties: AuthenticationMethod and RemoteProtocol. Read only
376 >    and used to determine the auth method and protocol used for the connection.
377 >
378 > 39. TIBDatabase: ensure that SQLDialect setting is used when creating a database using
379 >    a Create Database Statement generated by IBX.
380 >
381 > 40. All IBServices now have an additional published property "PortNo". This may
382 >    be set to a non-standard port number when necessary. If zero then the default
383 >    port number is used.
384 >
385 > 41: TIBLookupComboeditBox: Ensure dataset updated when change selected with the keyboard
386 >    and not just the mouse.
387 >
388 > 42. TIBCustomDataset: reopen query if already active when a TIBControlLink is added.
389 >
390 > 43. TIBTreeview: new ImageIndexField and SelectedIndexField Property allows the
391 >    image index and selected image index for each node to be set from a database field.
392 >
393 > 44. TIBExtract: new extract type (etGrantsToUser) for use with eoDatabase. If included
394 >    then database schema includes grants to all users. If not present then the
395 >    only user grants included are those to User PUBLIC.
396 >
397 > 45. TIBTreeView: performance improvement. When expanding include both expanded node
398 >    and child nodes in dataset.
399 >
400 >
401 > IBX Change Log  version                            (2.1-0) Fri, 15 Dec 2017 12:20:11 +0000
402 >
403 > 1. IBCustomDataset: Minor change of PChar to PByte for compatibility with fbintf
404 >   changes.
405 >
406 > 2. IBCustomDataset: Fixed use of incorrect datasize in TIBStringField.SetAsString.
407 >   Bug could result in truncated multi-byte character set values.
408 >
409 > 3. Changes consequential on moving fbintf character set utility functions from
410 >   IFirebirdAPI to IAttachment.
411 >
412 > 4. Avoid "Object is nil" error when opening a database with DefaultSystemCodePage = true
413 >
414 > 5. IBLookupComboEditBox: avoid race condition when autocompleting text that occasionally
415 >   results in autocomplete ignoring prefix text.
416 >
417 > 6. IBLookupComboEditBox: Ensure that cursor is not reset to start of text when
418 >   entering a new name into the text box.
419 >
420 > 7. IBCustomDataset: ensure that TIBStringField uses the field size reported by
421 >   Firebird rather than recomputing it.
422 >
423 > 8. Property Editor positioning tidy up: All IBX Property editors should now be
424 >   screen centre. Previously some were "poDesigned" which may be inappropriate
425 >   for multi monitor desktops.
426 >
427 > 10. TIBTreeView.FindNode: protect against error if zero length path or empty tree node.
428 >
429 > 11. TIBTransaction: On Force Disconnect do not raise an exception when problem ending
430 >    a transaction and always reset the object.
431 >
432 > 12. TIBQuery tidyup: remove unnecessary call to GetAffectedRows.
433 >
434 > 13. TIBXScript: Allow for override of database filename in Create Database statements.
435 >
436 > 14. IBLocaldb: Support initialisation of the database from an SQL script in addition
437 >    to a gbak format archive.
438 >
439 > 15. IBLocaldb: fix problem that stopped the OnSharedDataDir event from being recognised.
440 >
441 > 16. IBLocaldb: Drop database if error creating an empty database.
442 >
443 > 17. TIBTreeView: improve performance when selecting node - avoid refreshing dataset
444 >    unless selected node not in current dataset.
445 >
446 > 18. IBServices: SetDBParams method moved from TCustomIBLocalDBSupport (in IBLocalDB package)
447 >    to TIBCustomService, and IBlocalDB code tidy up.
448 >
449 > 19. IBTreeView: Initialise TIBTreeNode KeyValue to null to avoid unpredictable
450 >    behaviour due to uninitialised variable.
451 >
452 > 20. IBServices: Correct encoding of isc_spb_prp_write_mode in TIBConfigService from
453 >    integer to byte. Ditto isc_spb_prp_reserve_space and isc_spb_prp_access_mode.
454 >
455 > 21. IBSQL: When Database changed ensure that all resources are freed.
456 >
457 > 22. IBCustomDataset: When database changed ensure that queries an unprepared.
458 >
459 > 23. SQL Property Editors now use SynEdit with SQL Highlighter. New features include:
460 >    * Line Wrap on SQL Token boundaries (on user command)
461 >    * auto-complete table names in drop down list of table names
462 >    * Double click on tablename or field name adds to SQL text
463 >
464 > 24. IBDataOutput: print statistics using float (%f) format instead of decimal (%d).
465 >
466 > 25. IBTreeView: Call to FindNode: param type change from "array of Variant" to
467 >    TVariantArray. Seems to avoid memory corruption in Windows (probably a
468 >    workaround for a problem in fpc 3.0.4 win64).
469 >
470 > 26. IBDatabaseInfo: Code tidy up. Add check for database not assigned or not open.
471 >
472 > 27. IBDatabaseInfo: Remove memory leak when accessing database operation counts.
473 >
474 > IBX Change Log  version                   (2.0-2) Fri, 24 Feb 2017 12:17:53 +0000
475 >
476 > 1. TIBDatabase.CreateDatabase: extract full DB Name from SQL using reg ex in order to
477 >   include remote system name.
478 >
479 > 2. TIBExtract: No longer include comment header and COMMIT statement for empty
480 >   tables when data included in output.
481 >
482 > 3. Profiling: IBSQL now has conditional compilation flags to enable query performance
483 >   and timing information to be written to stdout. This may be used to locate
484 >   performance bottlenecks.
485 >
486 > 4. SQLParser: only call "OnChanging" event handler when value is different.
487 >
488 > 5. IBDynamicGrid: Update handling of navigation keys for a TDateEdit
489 >
490 > 6. IBCustomDataset: Set internalunprepared flag when transaction ends. This ensures
491 >   that BindFields is called when the query is next activated. Avoids FieldName
492 >   not found error.
493 >
494 > 7. IBUpdate: This is a new IBX component similar to TIBUpdateSQL. It is more general
495 >   purpose and allows the programmer to define any action they want for Update, Insert
496 >   or Delete. This may be complex SQL (similar to a Trigger), application specific
497 >   filtering of updates, or use of statements such as Grant or Revoke instead of
498 >   normal DML. See User Manual for more information.
499 >
500 > IBX Change Log  version                  (2.0-1) Mon, 09 Jan 2017 15:31:49 +0000
501 >
502 > 1. TIBEvents: Fix uninitialised variable that could result in lost events.
503 >
504 > 2. TIBExtract: Added support for FB3 "USAGE" privilege.
505 >
506 > 3. TIBExtract: data formatted as Charset set "octets" is now output using
507 >   hexadecimal notation.
508 >
509 > 4. TIBExtract: Binary Blobs and array data can now be embedded in INSERT statements
510 >   using a simple XML format.
511 >
512 > 5. TIBExtract: extract of individual Triggers and Stored Procedures can now include
513 >   grants to these objects.
514 >
515 > 6. TIBExtract: Stored Procedures and Views output in dependency order to avoid
516 >   dependency problems restoring complex databases.
517 >
518 > 7. TIBXScript: This component has been restructured to allow for the processing of
519 >   embedded XML in INSERT statements and to support interactive sources in addition
520 >   to non-interactive data sources such as files.
521 >
522 > 8. TIBXScript: CREATE DATABASE, DROP DATABASE, CONNECT statements are now supported.
523 >
524 > 9. TIBXScript: ISQL compatiable Set statements are now supported:
525 >   SET SQL DIALECT
526 >   SET TERM
527 >   SET AUTODDL
528 >   SET BAIL
529 >   SET ECHO
530 >   SET COUNT
531 >   SET STATS
532 >   SET NAMES <character set>
533 >
534 > 10. IBVersion unit added to hold current IBX Version Number information.
535 >
536 > 11. TIBExtract: Use character rather than byte length for VarChar procedure arguments.,
537 >    and domain definitions.
538 >
539 > 12. TIBExtract: Triggers now use SQL2003 syntax and database and transaction triggers
540 >    fully supported.
541 >
542 > 13. TIBExtract: when a database dump includes data, the generator values are now also set.
543 >
544 > 14: IBSQLEdit: Unit LCLPlatformDef added to uses clauses for lazarus 1.7 and later.
545 >
546 > IBX Change Log  version     (2.0-0) Tue, 06 Dec 2016 10:33:44 +0000
547 >
548 > See also doc/IBX4LazarusGuide.pdf for important information on
549 > upgrading to IBX2.
550 >
551 > 1. Size property of TIBStringField is now the width in characters of the field
552 >   and not the byte length. This applies only to multi-byte character sets such
553 >   as UTF8. The original approach aligned with TStringField. However, the TStringField
554 >   code is not recognised as a bug and hence this change to align the behaviour.
555 >   The TStringField change is expected in fpc 3.2.0.
556 >
557 > 2. A new property AutoFieldSize: boolean has been added to TIBStringField. When
558 >   true (default) then Size property value saved in the lfm is ignored. Size is
559 >   always set from the dynamic information read from the database. It is unclear
560 >   why anyone would want to override this and set Size to false.
561 >
562 > 3. ibxscript: should now handle correctly a Case..End statement within a procedure
563 >   block.
564 >
565 > 4. IBDatabase: new property - CreateIfNotExists. If true and database does not
566 >   exist when an attempt is made to connect to it (run time only) then an attempt
567 >   is made to create the database.
568 >
569 > 5. IBDatabase: new event - OnCreateDatabase. This event is called after a database
570 >   has been successfully created as a result of a call to CreateDatabase or when
571 >   creating a database after it was found not to exist.
572 >
573 > 6.  DBControlGrid: a race condition could result in the wrong row image being
574 >    written to the cache. This has been avoided by a trip round the message
575 >    loop before rendering the row image.
576 >
577 > 7.  DBControlGrid: It is strongly recommended not to open the source DataSet for
578 >    a DBControlGrid during a Form's "OnShow" event handler. Under GTK2 this is
579 >    known to risk corrupt rendering of row images when the control is first
580 >    displayed. If necessary use "Application.QueueAsyncCall" to delay opening
581 >    of the dataset (see DBControlGrid examples) until the Form's Window has been created.
582 >
583 > 8.  DBControlGrid & IBDynamicGrid: Navigation keys should now work correctly with
584 >    a TDateEdit control located on an editor panel.
585 >
586 > 9.  TIBExtract: brought up-to-date plus many bug fixes.
587 >
588 > 10. DBControlGrid: Removed memory leak when updating rows.
589 >
590 > 11. TIBCMLocalDBSupport: fixed invalid free on upgrade.
591 >
592 > IBX Change Log  version                                           (1.4-3) Thu, 22 Sep 2016 18:10:15 +0100
593 >
594 > 1. IBCustomDataset: When calling SetCodePage, no longer request transliteration
595 >   when target codepage is CP_NONE. This is a workaround for
596 >   http://bugs.freepascal.org/view.php?id=30622.
597 >
598 > 2. DBLog option removed from TIBStatisticalService - not supported by server
599 >   since Firebird 1.5.
600 >
601 > 3. ibxscript: An error is no longer generated for "on commit preserve rows" or
602 >   similar.
603 >
604 > 4. IBCodePage: updated mapping between codepages and character id.
605 >
606 > 5. ftWideString and ftWideMemo withdrawn. There is no UTF16 character set in
607 >   Firebird. Character sets with a char width of two are not UTF16.
608 >
609 > 6. Strings received from the database are now always transliterated into UTF8
610 >   regardless of the database character set or connection character set. This
611 >   is for compatibility with the LCL.
612 >
613 > IBX Change Log  version  (1.4-2) Thu, 22 Sep 2016 15:25:27 +0100
614 >
615 > 1. IBBlob: Defer reading of blob until read method called. This avoids having to
616 >   read in an entire blob just to get the size of the blob. General performance
617 >   improvement when opening datasets containing blobs.
618 >
619 > 2. Clearing a  Blob now sets the corresponding field's modified flag.
620 >
621 > 3. IBLookupCombo: When not performing auto-complete, original query sort order
622 >   is now used.
623 >
624 > 4. IBDynamicGrid: Add OnSelectEditor event. Allows editor panel to be dynamically
625 >   determined.
626 >
627 > 5. IBDynamicGrid: Recompute column widths after dataset closed and re-opened.
628 >
629 > 6. IBLookupCombo: LazUTF8 added to uses clause to avoid compilation problems post
630 >   lazarus 1.6.0
631 >
632 > 7. IBControls. Removed "runtime" from list of paths to avoid "multiple packages"
633 >   compilation error.
634 >
635 > IBX Change Log  version                                 (1.4-1) Tue, 17 May 2016 09:14:51 +0100
636 >
637 > 1. No character set specified for connection: when a text blob is retrieved, the
638 >  character set is determined by looking up the native character set using then
639 >  Firebird API. Otherwise a text mode blob is assumed to have the same character
640 >  set as the connection.
641 >
642 > 2. TIBGUIInterface: this is an internal interface. Minor type changes to allow
643 >   for Login Dialog returing a change to the database path.
644 >
645 > 3. Design Time Database and Server login Dialogs now allow the Database Name/Server Name
646 >   to be changed from that given in the TIBDatabase/TIBServer component and for the
647 >   entered value to be saved on a project specific basis (design time only).
648 >
649 > 4. IBDynamicGrid: TDBLookupCellEditor now compares its DataFieldName with the
650 >   column fieldname. If they are the same then it is acts as a look up for the KeyValue
651 >   Otherwise, it sets the column text to the selected ListField Value.
652 >
653 > 5. IBDynamicGrid: Only visible columns are now taken into account When recalculating
654 >   column width.
655 >
656 > 6. IBLookupComboEditBox: Fix error with autocomplete query when a RelationName is given
657 >   and a case insensitive search is requested.
658 >
659 > 7. IBDynamicGrid: No longer ignores notifications removing Column Totals controls
660 >   or column ListSource.
661 >
662 > 8. IBQuery: no longer performs unnecessary refresh of SQL Text (and hence avoids an
663 >   unprepare) when closing and the text has not changed.
664 >
665 > 9. IBSQL: Base the cursor name on a GUID instead of a hexstr version of the class pointer.
666 >   Less likely to cause a cursor re-use error on Windows.
667 >
668 > 10.SV5IPC: include workaround for OSX. FPC 3.0.0 has broken ipc module for darwin.
669 >   Expected to be fixed in 3.0.2. Hence workaround only applies to 3.0.0.
670 >
671 > 11. TIBTreeView: Guard against nil destination on record changed
672 >
673 > 12. AnsiString Code page support: TIBStringField.AsString and TIBMemoField.AsString now return a
674 >    string type with the code page set to reflect the returned field encoding after
675 >    Firebird driver transliteration, if any.  FPC 3.0.0 onwards only. Behaviour unchanged for
676 >    earlier versions.
677 >
678 > 13. AnsiString Code page support: Assigning to TIBStringField.AsString and TIBMemoField.AsString
679 >    will now result in transliteration to the code page specified for the Firebird driver
680 >    if the assigned string has a different code page. FPC 3.0.0 onwards only.
681 >
682 > 14. TIBDatabase: new property UseDefaultSystemCodePage. When set any lc_ctype parameter
683 >    is ignored and the lc_ctype value, when the database is opened, is set to align with
684 >    the DefaultSystemCodePage (FPC 3.0.0 onwards). Normally, this is what you want and should ensure
685 >    platform independence. Note: this applies to FPC 3.0.0 and earlier versions. Pre FPC
686 >    3.0.0, when this property is true, the lc_ctype is UTF8 except under windows when
687 >    the GETACP is used to determine the Windows code page.
688 >
689 > 15. TIBDatabase: new property DefaultCharSetName. This is the Firebird character set
690 >    name used as the lc_ctype when the database was opened. Only valid while the
691 >    Database is connected.
692 >
693 > 16. TIBDatabase: new property DefaultCodePage (FPC >=3.0.0 only). This is the codepage
694 >    id that corresponds to the DefaultCharSetName.
695 >
696 > IBX Change Log  version                          (1.4-0) Mon, 15 Feb 2016 14:44:24 +0000
697 >
698 > 1. Unix: If Firebird Embedded Server shared object is loaded and a local database
699 >   path is given and database attach fails due to access permission issues on the
700 >   temp directory or security database, then the attach is retried with "localhost:"
701 >   prefixing the databasename. This should avoid problems when the database has to
702 >   be accessed by a local (e.g. classic) server and libfbembed is used.
703 >
704 > 2. Windows: revised search order for Firebird DLL:
705 >     i.   The Firebird Embedded Server in the application Directory.
706 >     ii.  If the FIREBIRD environment variable is set then the directory this
707 >          points to is searched for the FB Client DLL and then then underlying
708 >          "bin" directory.
709 >     iii. Registry Key HKEY_LOCAL_MACHINE\SOFTWARE\Firebird Project\Firebird Server\Instances
710 >          is used to locate the Firebird installation directory and the underlying
711 >          "bin" directory is searched for the FB Client DLL.
712 >     iv.  The Default installation directories C:\Program Files\Firebird\Firebird_2_x
713 >          are searched for the FB Client DLL.
714 >     v.   The PATH Environment variable is used to search for the FB Client DLL.
715 >     vi.  Finally the  PATH Environment variable is used to search for IBASE.DLL.
716 >
717 > 3. New Component: TIBXScript. This is an ISQL compatible SQL script execution engine.
718 >   See doc/readme.scriptengine and example applications.
719 >
720 > 4. New Component: TIBlocalDBSupport. This is a TIBDatabase support component intended to
721 >   simplify the use of the embedded firebird server on both Linux and Windows platforms.
722 >   See dpc/readme.localdatabase and example applications.
723 >
724 > 5. IBDynamicGrid: Reordering on column header click should now also work for
725 >   dynamic columns.
726 >
727 > 6. ISQLMonitor: (Windows only). Mutex added to TMultilockGate to avoid race condition
728 >   between incrementing/decrementing the lock count and signalling the event.
729 >
730 > IBX Change Log  version           (1.3-2) Tue, 26 Jan 2016 14:39:54 +0000
731 >
732 > 1.3.2 was never formally released and only made available as beta copies.
733 >
734 > 1. DBControlGrid,IBDynamicGrid: Ignore down arrow and up arrow in TCustomMemo
735 >
736 > 2. IBDynamicGrid: Now deals correctly with a single column grid which has no indicator and autosize column
737 >
738 > 3. IBLookupComboEditBox: reset timer on each key press - avoids timer going off too early
739 >
740 > 4. IBDynamicGrid: Call event OnUpdateSortOrder even when aliasname not found in dataset
741 >   i.e. when it is a calculated field
742 >
743 > 5. IBDynamicGrid: Fix problem selecting a different row when expanded row at end of grid.
744 >   This problem was due to a race condition between recalculating row heights and
745 >   determining which row was selected by the mouse click. The row height calculation
746 >   is now deferred by an extra trip round the message loop allowing the row to
747 >   be always calculated on the current grid layout rather than risking it being
748 >   calculated on the grid layout after the expanded row has been shrunk.
749 >
750 > 6. IBLookupComboEditBox: avoid race condition between cm_killfocus and cm_exit on
751 >   Windows.
752 >
753 > 7. TIBStringField: Now has two new public properties: CharacterSetName: string and CharacterSetSize: integer;
754 >   These properties allow the (Firebird) character set name for the field and the max number of bytes per character
755 >   to be determined at runtime. See doc/readme.charactersets.html.
756 >
757 > 8. TIBWideStringField: This is a new field type with the same additional public properties as above and subclassed from
758 >   TWideStringField. This field type is used with the character size reported by Firebird is two. See doc/readme.charactersets.html.
759 >
760 > 9. TIBMemoField and TIBWideMemoField: new field types with the same additional public properties as above and subclassed from
761 >   TMemoField and TWideMemoField respectively. These field types are used with Blob subtype 1 and a characterset size of
762 >   1, 3 or 4 (TIBMemoField) or 2 (TIBWideMemoField). See doc/readme.charactersets.html.
763 >
764 >   Both also have a new published property "DisplayTextAsClassName". If false (default) the displaytext is generated
765 >   from the blob text by truncating the string to the displaywidth (in characters not bytes). A displaywidth of zero
766 >   implies no truncation.
767 >
768 > 10. IBLookupComboEditBox: Force autocomplete when EditingDone called and timer active.
769 >
770 > 11. IBDynamicGrid: Call DataSet.Append when entering edit mode and dataset empty and not in insert state
771 >   (avoids "Not in Edit Mode" error).
772 >
773 > 12. IBDynamicGrid: Correctly resize grid when one column width plus indicator.
774 >
775 > 13. IBDynamicGrid: Ensure Editor Panel has focus when shown - avoids Windows API calling
776 >    DBGrid.DoExit on subsequent mouse click (e.g. on child control such as a tabbed page control.
777 >
778 > 14. IBDynamicGrid: ignore up, down tab and return when editorpanel open and focus in a TCustomGrid descendent.
779 >
780 > 15. DBControlGrid: Stop flashing grid when dataset closed and then re-opened while DisabledControls
781 >
782 > 16. IBQuery: Bug fixed that prevented SQL being set programmatically once the Parser had been invoked.
783 >
784 > 17. IBCustomDataSet: On close, parser is now freed and Select SQL reverts to value before DataSet Opened.
785 >
786 > IBX Change Log  version        (1.3-1) Sat, 18 Jul 2015 13:30:50 +0100
787 >
788 > 1.   OnCloseUp Event Handler added to TDBLookupProperties
789 >
790 > 2.   IBDynamicGrid: Call to OnEditorPanelHide is now last editor hide action - avoids
791 >     problem with row size when exception is called.
792 >
793 > 3.   IBLookupComboEditBox: Force pending autocomplete on combobox exit.
794 >
795 > 4.   IBDynamicGrid and DBControlGrid: Keyhandler now ignores up, down, escape and return keys if
796 >     in a TCustomComboBox and ignores return key if in a TCustomMemo
797 >
798 > 5.   IBLookupComboEditBox: Ensure that KeyValue is set correctly when full text
799 >     keyed in i.e. when autocomplete not performed
800 >
801 > 6.   Cleanup of "Uses" clauses and add console mode support. IBX should now support
802 >     console mode applications with all LCL required functions (builtin dialogs and
803 >     cursor management) centralised in the  IBDialogs unit. As long as "IBDialogs" is
804 >     not included in your project, IBX should compile and link with a console mode program.
805 >     See consolemode example and its "readme"for further guidence. DO NOT add the ibexpress package to a
806 >     console mode application or the IDE will automatically assume that your
807 >     application is GUI based. Instead, you should include the ibexpressconsolemode package.
808 >
809 >     IMPORTANT NOTE: IBDialogs must be included in GUI applications in order
810 >     to use the built in dialogs and cursor management. IBDialogs is
811 >     included by default if "ibexpress" is in your project source's "uses" clause.
812 >     This should be the case for all projects created through the IDE. This is why
813 >     you do not want to add the ibexpress package to console mode applications. The
814 >     ibexpressconsolemode package has been created to allow console mode programs
815 >     to avoid adding LCL dependencies when using IBX, while still having the
816 >     unit search paths set up correctly.
817 >
818 >     Existing users should check to ensure that the "ibexpress" unit is included in
819 >     each project's source file (*.lpr).
820 >
821 >     You may find that in order for the IDE to recognise that ibexpressconsolemode
822 >     exists, you have to first open the package in the IDE and then close it. This
823 >     adds it to the most recently accessed packages list. To make it permanently
824 >     available, add the package name to lazarus' staticpackages.inc file.
825 >
826 >         Thanks to Julio Jiménez for suggesting support of console mode.
827 >
828 > 7.   SQL Parser can now accept quoted strings that include new lines
829 >
830 > 8.   IBDynamicGrid: Lookup Cell Editor - the cursor is now positioned at end
831 >     of text on start of edit. This is particularly useful when tabbing to a
832 >     column and then inserting text.
833 >
834 > 9.   New Examples provided for IB Services and ISQLMonitor.
835 >
836 > 10. Fix error when writing to blob streams that recorded only the last buffer
837 >    write in the blob stream. In most cases, this did not cause a problem as the
838 >    IB Blob Stream is written in a single write. However, with the TDBImage, write
839 >    of a graphic type prefix was lost which caused a problem when the image could
840 >        not be automatically recognised.
841 >
842 > 11. Improve generation of random cursor names in TIBSQL - avoid risk of "cursor
843 >    already open" errors due to random numbers used for the cursor name being identical.
844 >
845 > 12. IBTable: corrected error that could result in an "Index out of bounds" error
846 >    when opening the table and the Primary Key is the last or only column in the
847 >    table. Thanks to Rick Hoover for the fix.
848 >
849 > 13. Fix TIBDatabase initialisation of lc_ctype under unix. Set to "UTF8" instead
850 >    of "UTF-8", and update list of available database character sets. Existing
851 >    users should check the current lc_ctype setting in their applications.
852 >
853 > IBX Change Log  version  (1.2-4) Sat, 09 May 2015 12:38:29 +0100
854 >
855 > 1.  Firebird Services: avoid List Index error when opening a service with an
856 >    empty Params property.
857 >
858 > 2.  IBControls: Fix problem with new link mechanism introduced in 1.2.3.
859 >    Link now set up in Loaded method - avoids occasional failure to apply
860 >    SQL markup on initial open.
861 >
862 > 3.  "Employees" example performance improvements when scrolling.
863 >
864 > 4.  DBControlGrid: Correctly handle edit panel removal when panel is child control of a
865 >    TFrame. Force recaching of selected frame to avoid GTK race (results in a
866 >    random image cached).
867 >
868 > 5.  DBControlGrid: Should now react to changes in panel height at run time.
869 >
870 > 6.  IBDynamicGrid: Redraws rows below on panel editor hide - avoids blank space at end of grid  
871 >    even when further rows exist.
872 >
873 > 7.  DBControlGrid: DefaultRowHeight is no longer a published property as it should
874 >    always be derived from panel height and setting this property can cause confusion.
875 >    Note for existing projects: to avoid a missing property error at run time,
876 >    each form using the DBControlGrid must be opened, updated and saved in the IDE
877 >    in order to remove the property value from the lfm.
878 >
879 >
880 > IBX Change Log  version (1.2-3) Tue, 14 Apr 2015 14:11:17 +0100
881 >
882 > 1.  TIBStoredProc. Prepare now called by ParamByName to avoid need to always
883 >    call Prepare before setting parameter values.
884 >
885 > 2.  Error message on ParamByName (all cases) not found now includes name of missing parameter.
886 >
887 > 3.  Code tidyup and more robust handling of dsql information result vector.
888 >
889 > 4.  Support for centralised handling of transaction status changes. TIBTransaction
890 >    has been given additional events "AfterEdit", "AfterInsert", "AfterDelete", "AfterPost"
891 >    and "AfterExecQuery". The first three are called after the same event is called
892 >    for an IBCustomDataSet descendent using the Transaction. The fourth is called
893 >    after a call to TIBSQL.ExecQuery, again using this transaction. These new events
894 >    enable monitoring of transaction status changes for a given transaction to be
895 >    handled in a single place. For example, when a change to the dataset occurs
896 >    an indicator can be set that shows the user that in order to save changes,
897 >    the transaction should be committed.  Rather than doing this per dataset, this
898 >    can now be done per transaction.
899 >
900 > 5.  TDataSet.CheckBrowseMode automatically posts changes to the current row when
901 >    the dataset is scrolled. However, any changes to the current row are, by default,
902 >    discarded when the dataset is closed. TIBDataSet, TIBQuery and TIBTable now
903 >    have a new property "DataSetCloseAction" that adds automatic posting of changes
904 >    on dataset close. If this property is set to dcDiscardChanges (default) then the
905 >    behaviour is unchanged from previous versions. if the value is set to dcSaveChanges
906 >    then IBX will attempt to post any unsaved changes before the dataset is closed
907 >    (and after the BeforeClose event handler is called). The exception is when the
908 >    dataset is being closed as a result of a transaction rollback. In this case,
909 >    no action is taken and any unsaved  changes are discarded. This avoids both
910 >    unnecessary overhead and the risk that a validation error may occur in the Post
911 >    raising an exception and thereby preventing a rollback.
912 >
913 > 6.  String Field sizes and Display Widths should now be correct for multi-byte character sets.
914 >    In earlier versions, the Display Width was set to the maximum byte width rather than the character
915 >    width. Display Widths are now corrected by dividing by the max byte width per character.
916 >    For UTF8 character sets, the byte width is four and hence the Display Width will be
917 >    the byte width divided by 4. The byte width of each character set is determined
918 >    dynamically when the database connection is estabished from the RDB$CHARACTER_SETS
919 >    system table. (see also http://bugs.freepascal.org/view.php?id=27766).
920 >
921 > 7.  SQLParser will now correctly parse SQL Text which contains ':' within quoted string.
922 >
923 > 8.  IBLookupComboEditBox: List should now always be restored to full list when the
924 >    control loses focus. Default Key press default interval reduced to 200ms.
925 >
926 > 9.  DBControlGrid: Ensure that selection is changed to newly appended row, even
927 >    when dataset rows are less than visible rows.
928 >
929 > 10. IBDynamicGrid: Editor Panel is not shown on indicator click if Datasource
930 >    does not exist or DataSet is empty. More responsive on dataset open. New event
931 >    OnRestorePosition. Column sort disabled if no header row.
932 >
933 > 11. IBTreeView: improved handling of response to "Add Node". Avoid scrolling dataset
934 >    while dataset state is dsInsert. Avoids posting errors.
935 >
936 > 12. IBControls: New mechanism for distributing UpdateSQL and UpdateParams events. This is to
937 >    avoid conflict with DisableControls/EnableControls with Master/Detail linked tables.
938 >
939 > 13. IBLookupComboEditBox: Now avoids SQL Errors when combo box text contains single quotes.
940 >
941 > 14. TIBDataSet and TIBQuery: new Event - OnValidatePost. This event has been introduced
942 >    to solve a specific problem. That is when the dataset cursor is moved (e.g. by
943 >    a grid mouse click and the current row is being edited or inserted. In this case, TDataset
944 >    always "posts" the current record regardless or whether or not it may be more appropriate
945 >    to cancel any changes; the post occurs before the "BeforeScroll" event fires due to the way the
946 >    "MoveBy" function is implemented by TDataSet. The OnValidatePost event is called
947 >    as the first action of the "Post" method and allows the handler to convert the Post
948 >    into a Cancel if that is the appropriate action on moving to a different row. This is
949 >    achieved by returning with "CancelPost" argument set to true. Note that an exception could be
950 >    raised here, but it may still be more appropriate to validate a post and signal
951 >    a problem in the "BeforePost" event handler. See readme.automaticposts.xhtml)
952 >
953 > 15. On Unix derived systems, the Firebird library name can now be given as a colon
954 >    separated list. Each library name on the list is tried in turn, in left to right
955 >    order with the first found being used as the firebird library. By default, on Linux,
956 >    the library name list is 'libfbembed.so.2.5:libfbembed.so.2.1:libfbclient.so.2'. This can be
957 >    overidden by the FBLIB environment variable or the OnGetLibraryName function.
958 >
959 >    Note: when using the libfbembed.so, if you prefix the database name with "localhost:"
960 >    then it will still attempt to access the database via the Firebird Server and will
961 >    require a username and password. If only the pathname is given, then the username
962 >    and password should be omitted and the unix file permissions are used to grant
963 >    access.
964 >
965 > IBX Change Log  version  (1.2-2) Sat, 14 Mar 2015 11:35:04 +0000
966 >
967 > 1.  A new IBControl - TDBControlGrid has been added. TDBControlGrid a lookalike
968 >    rather than a clone for the Delphi TDBCrtlGrid. TDBControlGrid is a single column grid
969 >    that replicates a TWinControl - typically a TPanel or a TFrame in each row. Each row
970 >    corresponds to a row of the linked DataSource. Any data aware control on the
971 >    replicated (e.g.) TPanel will then appear to have the appropriate value for the row.
972 >
973 > 2. As suggested by Julio Jiménez, a new property "SQLHourGlass" has been added to TIBDatabase.
974 >   When set to false (default true), the Hour Glass cursor is supcpressed and no cursor change
975 >   takes place during database access. This may be useful when there are performance issues with
976 >   the change of cursor. Setting the property to false suppresses the change of cursor.
977 >
978 > 3. As suggested by Julio Jiménez, a new property "AutoCommit" has been added to TIBDataSet, TIBQuery
979 >   and TIBTable. When set to acCommitRetaining (Default: acDisabled), a call is made to
980 >   Transaction.CommitRetaining immediately after every Post or Delete. This has the effect of
981 >   making all changes permanent immediately rather than when the transaction is explicitly
982 >   committed.
983 >
984 > 4. Experimental support for the Firebird 3 SQL_BOOLEAN type has been added while still
985 >   using the legacy Firebird API. Thanks to Gabor Boros for helping to test this feature.
986 >
987 > IBX Change Log  version      (1.2-1) Fri, 13 Mar 2015 11:14:15 +0000
988 >
989 > Development version only.
990 >
991 > IBX Change Log  version   (1.2-0) Thu, 26 Feb 2015 10:34:04 +0000
992 >
993 > 1. An internal select SQL Parser is now available for TIBCustomDataset descendents.
994 >   This is typically used during an "OnBeforeOpen" event handler to manipulate the
995 >   "Where" and "Having" clauses to implement user specified filters of arbitrary
996 >   complexity.
997 >
998 > 2. A new Component Palette entry "Firebird Data Controls" is now available. This has
999 >   three new data aware controls dependent on IBX and which make use of the SQL Parser.
1000 >   These are:
1001 >
1002 >   - TIBLookupComboEditBox
1003 >   - TIBDynamicGrid
1004 >   - TIBTreeview
1005 >
1006 >   TIBLookupComboEditBox is a TDBLookupComboBox descendent that implements "autocomplete"
1007 >   of typed in text and "autoinsert" of new entries. Autocomplete uses SQL manipulation
1008 >   to revise the available list and restrict it to items that are prefixed by the
1009 >   typed text (either case sensitive or case insensitive). Autoinsert allows a
1010 >   newly typed entry to be added to the list dataset and included in the available
1011 >   list items.
1012 >
1013 >   TIBDynamicGrid is a TDBGrid descendent that provides for:
1014 >   - automatic resizing of selected columns to fill the available row length
1015 >   - automatic positioning and sizing of a "totals" control, typically at the
1016 >     column footer, on a per column basis.
1017 >   - DataSet resorting on header row click, sorting the dataset by the selected column.
1018 >     A second click on the same header cell reversed the sort order.
1019 >   - Support for a "Panel Editor". That is on clicking the indicator column, the row
1020 >     is automatically expanded and a panel superimposed on it. The panel can have any
1021 >     number of child controls, typically data aware controls with the same datasource
1022 >     as the grid allowing for editing of additional fields and more complex editors.
1023 >   - Reselection of the same row following resorting.
1024 >   - A new cell editor that provides the same functionality as TIBLookupComboEditBox.
1025 >     Its properties are specified on a per column basis and allows for one or more
1026 >     columns to have their values selected from a list provided by a dataset.
1027 >     Autocomplete and autoinsert are also available. The existing picklist editor
1028 >     is unaffected by the extension.
1029 >
1030 >   TIBTreeView is a data aware TCustomTreeView.
1031 >
1032 > 3. When getting a field value using FieldByName.AsVariant, an SQL_INT64 with a
1033 >   zero scale will no longer return an error. An Int64 will be returned instead.
1034 >
1035 > 4. TIBTransaction now has events for Before and After Transaction End and a new function
1036 >   "GetEndAction" allowing the EndAction to be accessed by these event handlers.
1037 >
1038 > 5. TIBQuery can now handle correctly queries which contain the same keyword parameter
1039 >   repeated multiple times.
1040 >
1041 > 6. TIBUpdateSQL will no longer return an error when "RowsAffected" is <> 1. This error
1042 >   check used to get in the way of using Stored Procedures, and "Update or Insert"
1043 >   statements.
1044 >
1045 > 7. Insert, Modify and Delete property Editors now support Query Generation from
1046 >   Stored Procedures.
1047 >
1048 > 8. Three new examples illustrate the use of the new IB Controls
1049 >
1050 >
1051 > IBX Change Log  version  (1.1-0) Mon, 07 Jul 2014 14:01:07 +0100
1052 >
1053 > 1. TIBXSQLVAR code clean up and optimisation to improve client side "prepare" and parameter
1054 >   setting performance. See "readme.field+param.names in the doc folder.(Thanks to
1055 >   Gabor Boros for reporting this problem and for testing the improvements).
1056 >
1057 > 2. IBX can now support dialect 3 quoted column names that contain spaces and which differ only in their case.
1058 >   See readme.field+param.names in the doc folder.
1059 >
1060 > 3. IBX SQL Editors will now automatically add double quotes around column names when the database
1061 >   dialect is "3" and the column name contains spaces or is a Firebird 2.5 SQL Reserved Word.
1062 >
1063 > 4. Param Type LargeInt now supported in TIBQuery and TIBStoredProc
1064 >
1065 > 5. TIBSQL.ExecQuery retry on failure removed to avoid problems with "at most once"
1066 >   actions.
1067 >
1068 > 6. TIBTransaction.SetDefaultDatabase uses SetObjectProp instead of mis-using SetOrdProp (with
1069 >   thanks to Yuriy Kopnin for pointing this out).
1070 >
1071 > 7. GenerateParamName is now a published property of TIBSQL, TIBQuery and TIBDataSet.
1072 >
1073 > 8. varWord, varShortInt and varInt64 added to TIBXSQLVAR.SetAsVariant and hence now available as variant types
1074 >   for both fields and parameter setting.
1075 >
1076 > 9. Changes to the Select SQL in an IBCustomDataset descendent should now be
1077 >   visible in the Fields Editor immediately afterwards - rather than only after cycling the "active" property.
1078 >
1079 > 10. TIBSQL SQL editor will operate correctly and not report an SQL syntax error on SQL test,
1080 >    when DSQL ('?') parameter placeholders are used and the TIBSQL.GenerateParamNames property is set to true.
1081 >
1082 > 11. TIBTable now has a property editor for "MasterFields"
1083 >
1084 > 12. SQL Property Editors now include a checkbox "Allow DSQL Placeholder". This corresponds to the
1085 >    GenerateParamNames property and should be set when using DSQL (i.e. '?') style parameters.
1086 >
1087 > 13. The IBTransaction editor now has a radio button ("Unspecified") which is set when the combination
1088 >    of settings is unrecognised. Selecting this radio button has no effect on the settings.
1089 >  
1090 >
1091 > IBX Change Log  version                 (1.0-5) Sat, 28 Dec 2013 19:22:23 +0000
1092 >
1093 > 1. TBookmark change conditional compile changed to >= 2.7.0 to match revised availability of change.
1094 >
1095 > IBX Change Log  version          (1.0-4) Thu, 28 Feb 2013 16:56:13 +0000
1096 >
1097 > 1. In a TIBCustomDataset descendent, a generator now only sets the value when
1098 >   it is null. This allows for alternative user defined setting of the generator
1099 >
1100 >   Many thanks to Julio Jiménez for this fix
1101 >
1102 > 2. An Error Dialog is now displayed in the Lazarus IDE if IBX cannot find the Firebird Library
1103 >   and suggests that the user may have forgotten to install it.
1104 >
1105 > IBX Change Log  version         (1.0-3) Thu, 22 Nov 2012 22:53:39 +0000
1106 >
1107 > 1. Conditional compilation used to limit registration of TIntegerField to
1108 >   Lazarus versions less than 1.1
1109 >
1110 > 2. When a database connection is created, character set is now by default set
1111 >   to UTF8 (Unix) or to the current Windows code page (Windows) if in the range
1112 >   1250 to 1254.
1113 >
1114 >
1115 > IBX Change Log  version     (1.0-2) Tue, 09 Oct 2012 09:10:30 +0100
1116 >
1117 > 1. TBookmark change conditional compile changed to > 2.6.2 to match expected availability of change.
1118 >
1119 >
1120 > IBX Change Log  version    (1.0-1) Sun, 05 Aug 2012 20:00:04 +0100
1121  
1122   1. In IBCustomDataset. Changed CurBookmark from string to TBookmark for compiler versions > 2.6.0
1123     Necessary because of TBookmark type and TDataSet.Bookmark property change in fpc 2.7.1

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