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Revision 19 by tony, Mon Jul 7 13:00:15 2014 UTC vs.
Revision 267 by tony, Fri Dec 28 10:44:23 2018 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 (2.3-3 Build 11288) Fri, 28 Dec 2018 10:04:17 +0000
2	>
3	>	1. New property for TIBDatabase and TIBXServicesConnection. This is "ConfigOverrides"
4	>	and is used to override the default settings in the client side "firebird.conf" This
5	>	includes "WireCompression" and "WireCrypt". The value of this property is a "TStrings".
6	>	Each line of the string list should be a setting in the same format as "firebird.conf".
7	>	For example "WireCompression = true" in order to request wire compression on the client side.
8	>
9	>	Note: explicit settings in the client side "firebird.conf" appear to take precedence
10	>	over settings given in TIBDatabase and TIBXServicesConnection. Many client side settings
11	>	also require a compatible setting in the server side "firebird.conf". For example
12	>	"WireCompression = true" must also be set in the server's "firebird.conf" for wire
13	>	compression to be used.
14	>
15	>	Whether or not WireCompression or WireCrypt are in use can be checked using the information
16	>	returned with the Client/Server protocol version. See ibx/examples/dbadmin and
17	>	ibx/examples/dbinfo for examples of how to display this information.
18	>
19	>	2. New property for TIBDatabase and TIBXServicesConnection: "WireCompression". This
20	>	is a "convenience" property. If set the "WireCompression=true" is added to the
21	>	ConfigOverrides. If unchecked then this setting is removed.
22	>
23	>	IBX Change Log  version (2.3-2) Wed, 05 Dec 2018 12:19:23 +0000
24	>
25	>	1. Remove need to check for IsMultiThread by providing access to GUI timers via
26	>	IBGUIInterface. Note: master/detail delay timer does not apply to console
27	>	mode apps.
28	>
29	>	2. TIBCustomDataSet: SQLParser ignored if it does not contain a valid select
30	>	statement. This avoids problems if "Execute Block" is used as the Query.
31	>
32	>	3. IBSQLParser now uses the common SQL tokeniser from fbintf. This replaces the
33	>	internal SQL tokeniser routines.
34	>
35	>	4. IBSQLParser: new property NotaSelectStmt. Set to true if SQL fails to parse
36	>	as a select statement, with or without CTEs.
37	>
38	>	5. IBSQLParser: parser now recognises the "ROWS" clause.
39	>
40	>	6. TIBXScript now uses the common SQL tokeniser from fbintf. This replaces the
41	>	internal SQL tokeniser routines.
42	>
43	>	7.  Fix error in TIBXScript processing of "set" statements. This avoids exceptions
44	>	being raised for valid set statements processed by a data formatter.
45	>
46	>	8. New published property for TIBDatabase and TIBXServicesConnection. This is
47	>	FirebirdLibraryPathName: string. If not empty it is used to explicitly specify
48	>	the path of the Firebird Library used by the database/services connection.
49	>
50	>	9. New read only public property for TIBDatabase and TIBXServicesConnection. This
51	>	is FirebirdAPI and returns the IFirebirdAPI interface used by the database/
52	>	services connection.
53	>
54	>	10.SQL Property editors now quote parameter names if "Quote identifier" is selected
55	>	or param name is not a valid SQL identifier.
56	>
57	>	11. IBLookupComboEditBox: In Lazarus 2.0, TDBLookupComboBox takes a more restrictive
58	>	view of whether the text box should be editable when no DataSource is specified.
59	>	TIBLookupComboEditBox has been updated to workaround this problem. As long as
60	>	ReadOnly is false, the text box is editable when no DataSource is specified.
61	>
62	>	12. AllowUseOfFBLIB is now set to "true" at design time. This is to allow use of
63	>	the FBLIB environment variable. If you do not want to permit this then you
64	>	must modify the Register procedure in the design/IBDBReg.pas unit to remove
65	>	this setting.
66	>
67	>	IBX Change Log  version                 (2.3-1) Thu, 25 Oct 2018 14:39:45 +0100
68	>
69	>	1. IBCustomDataset: replace deprecated function ValidUTF8String with call to
70	>	Utf8EscapeControlChars
71	>
72	>	IBX Change Log  version                (2.3-0) Mon, 16 Apr 2018 09:48:06 +0100
73	>
74	>	IMPORTANT: the source code tree has been re-organised for IBX 2.3. Please remove
75	>	all previous copies of the IBX source code tree before installing this release.
76	>
77	>	The IBX packages used by most users have not changed, with one exception. The
78	>	IBServices unit has been moved to the package iblegacyServices.lpk. To continue
79	>	to use the IBServices unit in your applications, please add the iblegacyServices
80	>	to the list of dependencies. To do this, open the Project Inspector and select
81	>	Add->New Requirement and select "ibLegacyServices" from the list of available
82	>	packages.
83	>
84	>	1. New unit IBXServices. The IBXServices unit is a re-architectured update of
85	>	the IBServices unit providing what is intended to be a clearer and easier to
86	>	use set of IB Services components. See Chapter 10 of the IBX User Guide for
87	>	more information and the guide to "Firebird Service Management Using IBX".
88	>	As indicated above, the legacy services components are still available and
89	>	provided in a separate package. There is no need to update working applications
90	>	using the older versions except for an additional package dependency.
91	>
92	>	2. The IBX packages and source code tree have been re-organised in an attempt to
93	>	finally get rid of the "duplicate ppu" warnings. This re-organisation should
94	>	not affect existing users. Section 2.3 of the IBX User Guide describes the
95	>	new set of IBX packages.
96	>
97	>	3. The ibx/examples/DBAdmin and the ibx/examples/services example have been
98	>	updated to use the new Services API components.
99	>
100	>	4. The iblocal package has been updated to use the new Services API components.
101	>
102	>	5. procedure SetAutoAdmin; in the new IBX Services this method is now a member of
103	>	TIBXSecurityService. It had been wrongly classified in the previous version
104	>	as a per database configuration item. It is global to a server and hence
105	>	correctly positioned as part of the Security Package. In the DBAdmin example,
106	>	the setting has moved to the mappings page.
107	>
108	>	6. TIBXScript: IgnoreCreateDatabase added. If true then CREATE DATABASE statements
109	>	are ignored.
110	>
111	>	7. TIBDatabase: DropDatabase now ensures that all transactions have been properly
112	>	closed before the database is dropped. Before and After Disconnect event handlers
113	>	are also fired.
114	>
115	>	8. TIBTransaction: OnStartTransaction event now fires every time the transaction
116	>	is started and not just the first time.
117	>
118	>	9. IBDataOutput: Use FormatFloat for all performance statistics to avoid platform
119	>	depenendency with comp type.
120	>
121	>	10. IBDataOutput: select query data output is now sent to stdout instead of stderr.
122	>
123	>	11. TIBDatabase: Remove regression. If a user login dialog changes the DatabaseName
124	>	then this is recognised and not ignored.
125	>
126	>	12. TIBDataSet, TIBQuery, TIBTable: additions:
127	>	function GetRowsAffected(var SelectCount, InsertCount, UpdateCount, DeleteCount: integer): boolean;
128	>	function GetPerfStatistics(var stats: TPerfCounters): boolean;
129	>	property EnableStatistics: boolean read FEnableStatistics write SetEnableStatistics;
130	>
131	>	GetRowsAffected returns the affected row counts from the last insert/update/delete
132	>	if EnableStatistics = true then GetPerfStatistics returns the current stats
133	>	counters for the select query. Note: stats accumulate after each fetch from
134	>	the database. To get total query cost after open, call the "Last" method
135	>	and then GetPerfStatistics.
136	>
137	>	See ibx/examples/consolemode for an example of the use of GetPerfStatistics
138	>
139	>	13. TIBExtract: Identity columns DDL. "Start with clause" now correctly encapsulated
140	>	in parenthesises.
141	>
142	>	14. TIBExtract: new published property "AlwaysQuoteIdentifiers". If true then in dialect 3
143	>	SQL identifiers are always delimited by double quotes. If false, then they are
144	>	only delimited if the identifier is a reserved word, contains lower case or special
145	>	characters. Set this property to true to retain previous behaviour.
146	>
147	>	15. Insert SQL Property Editor. In Insert Returning Clause, Identity column names
148	>	are now inserted in double quotes if not Reserved Words or valid SQL Identifiers.
149	>
150	>	16. TIBDataSet, TIBQuery, TIBTable: addition:
151	>	property MasterDetailDelay: integer {defaults to zero}
152	>
153	>	When non-zero and the dataset is a detail table referencing a master table
154	>	through either a MasterSource (TIBTable) or a DataSource (TIBDataSet, TIBQuery)
155	>	then a synchronisation delay is added (in milliseconds) between the master
156	>	row changing and the detail dataset being re-opened. If the master dataset
157	>	is scrolled before the delay expires then the delay is reset. This can be used
158	>	to avoid performance overheads when scrolling through a large master dataset.
159	>
160	>	Note: uses fptimer and hence requires a thread manager. Under Linux the
161	>	chreads unit must be included in your project. TTimer is not used in order
162	>	to avoid an LCL dependency. Requires FPC 3.0.2 or later.
163	>
164	>	17. TIBExtract: User role grants now excluded when etGrantsToUser not specified
165	>	with Extract Option eoDatabase.
166	>
167	>	18. TIBLookupComboEditBox: Workaround added for https://bugs.freepascal.org/view.php?id=33428
168	>	When a deLayoutChanged event is reported on the ListSource dataset, the
169	>	combobox text is updated. This allows a listsource (detail) to be in a Master/Detail
170	>	relationship with the control's datasource (master).
171	>
172	>	19. TIBExtract: Full BigInt value range now supported for Generators/Sequences.
173	>
174	>	20. TIBExtract: Select Procedures (Procedure type 1) now include "SUSPEND;" clause in their
175	>	stubs. Pedantic fix really, as procedures output in dependency order anyway.
176	>
177	>	21. TIBExtract: Package Headers and Package Bodies are now included in the extracted
178	>	DDL (Firebird 3 and later only).
179	>
180	>	22. TIBLookupComboBox Autocomplete Fixes:
181	>	i. Only appended text is now selected after autocomplete.
182	>	ii. Uppercase keys no longer ignored for autocomplete.
183	>	iii. Retain Prefix case is now honoured correctly.
184	>	iv. When a DataSource is assigned, typing after autocomplete now extends prefix
185	>	before autocomplete performed. i.e. behaviour now the same as when
186	>	no DataSource assigned.
187	>
188	>	23. TIBXScript: Single Line Comments starting with '--' are now ignored when occurring
189	>	between SQL statements.
190	>
191	>	24. TIBExtract: New published property CaseSensitiveObjectNames. If false (default) then
192	>	ObjectNames are converted to upper case before matching against metadata object
193	>	names, unless the objectname is delimited by double quotes, in which case, the
194	>	double quotes are removed and the remaining string is used (unmodified) to match
195	>	against the metadata object name.
196	>
197	>	If true then the ObjectName is used as is without modification and matched
198	>	against the metadata object name. No attempt is made to remove double quotes.
199	>
200	>	25. TIBExtract: New Extract Types: etDatabaseTriggers and etDDLTriggers. When used
201	>	with eoTrigger, these extract types can be used to select only Database Triggers,
202	>	or DDL Triggers or both. Ignored when etTable or etTrigger included in Extract Types.
203	>
204	>	26. TIBXScript: If an exception occurs during the processing of a statement, the
205	>	statement separate character is now reset to the default (';').
206	>
207	>	27. TIBDatabase: Reconnect method added and used by TIBXScript for reconnect.
208	>
209	>	28. TIBXScript: Transaction is no longer automatically reactivated immediately processing
210	>	a commit or reconnect statement and instead activated only when next SQL statement
211	>	is executed.
212	>
213	>	29. TIBSQL.HasField should no longer generate and exception when the field does not exist.
214	>
215	>	30. TIBXScript: case insensitive regex now used when matching statements instead of
216	>	converting statement to upper case.
217	>
218	>	31. TIBExtract: metadata comments now supported. New published property
219	>	IncludeMetaDataComments (default true). If true then metadata comments included
220	>	in extracted DDL. New Extract Object member eoComments. This may be used with
221	>	ExtractObject method to list all metadata comments.
222	>
223	>	32. TIBExtract: ListObjectNames method added.
224	>
225	>	33. Updated Database component editor to support additional connection string
226	>	types.
227	>
228	>	IBX Change Log  version  (2.2-0) Wed, 28 Feb 2018 10:57:45 +0000
229	>
230	>	NOTE: THE LOCATIONS OF SOME OF THE UNIT DIRECTORIES HAS CHANGED FROM IBX 2.1. THIS IS TO
231	>	AVOID DUPLICATE PPU WARNINGS. PLEASE REMOVE EARLIER VERSIONS OF IBX BEFORE INSTALLING THIS
232	>	RELEASE.
233	>
234	>	NOTE: THE DBADMIN DEMO REQUIRES THAT THE MemDSLaz PACKAGE IS INSTALLED IN THE LAZARUS IDE.
235	>
236	>	1. IBExtract: Identity columns - add additional check for null column for generator name.
237	>
238	>	2. IBCustomDataSet: Insert and Modify (Update) queries now recognise and process SQL RETURNING clauses.
239	>	The main use for this is for Firebird 3 Identity columns (see IBXDocumentation 6.6.8 for further
240	>	information). However, this is also a very useful mechanism for returning updated computed by
241	>	column values. Values returned as a result of executing an Insert or Update statement
242	>	replace existing values in the current row for each corresponding column.
243	>
244	>	Previously, if a dataset's select query included read only (computed by) fields then
245	>	an automatic row refresh was performed after an insert or update query had been processed,
246	>	irrespective of the setting of the "ForcedUpdates" property. This has changed such
247	>	that an automatic refresh is no longer performed if an insert or update query contains
248	>	a returning clause that updates one or more fields on the current row. A full row
249	>	refresh is only performed if (a) ForcedRefresh is true or (b) the query does not return any
250	>	field values and the select query contains read only fields. Use of Insert/update
251	>	returning should be significantly more efficient than executing a refresh query.
252	>
253	>	This behaviour change is intended to be backwards compatible and there should be no need to change
254	>	existing programs, other than to improve performance by using the new capability.
255	>
256	>	3. IBCustomDataSet: DELETE...RETURNING queries are now also recognised. However, as
257	>	they are called when the dataset row is being deleted, there is no value in
258	>	updating the current record from the query result. Instead, a new event handler
259	>	"OnDeleteReturning" is provided. If a DELETE...RETURNING query is execute and
260	>	an OnDeleteReturning event handler is provided then it is called with the IResults returned
261	>	by the query. The event handler can then interrogate the query results and
262	>	perform whatever action is necessary. For example to confirm, to the user,
263	>	the deletion of a row with the returned values.
264	>
265	>	4. TIBTable: generated Insert and Update SQL now include a RETURNING clause for
266	>	any Computed By or Identity Columns. The IBTables example has been updated to
267	>	illustrate the computation of the employee Full Name on update.
268	>
269	>	5. TIBTable: The GeneratorField property is now published.
270	>
271	>	6. The InsertSQL property editor now shows Firebird 3 Identity columns separate from the Field List.
272	>	When InsertSQL is generated, the Identity columns are not included in the list of values to
273	>	be inserted. A RETURNING clause is added to the insert statement to return the value of
274	>	each Identity column after the insert is executed.
275	>
276	>	7. The Modify Property Editor now generates Update SQL with Computed By fields in Update..Returning clause.
277	>	Similarly Insert Property Editor now generates Insert SQL with Computed By fields in
278	>	Insert..Returning clause.
279	>
280	>	8. TIBGenerator: small performance improvement by not preparing query each time
281	>	a new value is generated.
282	>
283	>	9. TIBSQL: Free resources when transaction changed - ensures new transaction is used.
284	>
285	>	10. Property editors will now sync table name to a System Table when "Include System
286	>	Tables" is selected and the query is for a System Table.
287	>
288	>	11. Minor Performance improvement to handling of Date/Time types in IBX datasets. Field
289	>	values are no longer converted to milliseconds from TDateTime and then back again
290	>	to TDateTime (the conversion to milliseconds is the default TDataset approach).
291	>
292	>	12. Property Editors handling of Stored Procedures.
293	>	* Select and Refresh: only show a list of stored procedures that return multiple rows (proc type 1) and
294	>	which have a non-empty list of output parameters (i.e. stored procedures that may be used in a select
295	>	query).
296	>	* Modify and Insert: only show a list of stored procedures that return at most a singleton row (proc type 2).
297	>
298	>	13. IBStoredProc: Now supports Firebird 3 Package Names. A new published property PackageName
299	>	can be used to select a package. If non-empty, the stored procedure name is
300	>	expected to be a stored procedure defined in the specified package and the
301	>	generated SQL will be as required for a stored procedure located in a package.
302	>
303	>	14. Select, Refresh, Insert, Modify, Delete and TIBSQL SQL Property Editors now include
304	>	a "Package Name" drop down box to allow selection of a Firebird 3 Package from
305	>	which a stored procedure can be selected. With no package name selected, non-package
306	>	stored procedures are listed.
307	>
308	>	15. TIBXScript: turn off database login prompt when reconnecting - this avoids prompting
309	>	for password on reconnect.
310	>
311	>	16. TIBDatabase: use IAttachment for connection default character set id, code page
312	>	and character set name.
313	>
314	>	17. TIBDatabaseInfo: cache ODS Version information on first request in order to minimise
315	>	DB info lookups"
316	>
317	>	18. IBExtract: now supports DDL Triggers and Grants to DDL objects.
318	>
319	>	19. Add a property Editor for TIBUpdate.RefreshSQL.
320	>
321	>	20. IBUpdate: Ignore non-data (e.g. calculated) fields when assembling list of input
322	>	parameters. This stops an exception being raised when the field cannot be
323	>	located in the record buffer.
324	>
325	>	21. Property Editors now automatically include System Tables when opened and when the query table
326	>	is a System Table.
327	>
328	>	22. IBServices: SQRB and SRB buffers are now reset when service query throws an exception.
329	>	This avoids errors due to a stale SQRB or SRB being used for the next query.
330	>
331	>	23. IBServices: Service attach parameters now include "expected_db". This is used to
332	>	add the SPB item isc_spb_expected_db. This names a database using
333	>	an alternative Security Database (FB3 onwards) and allows (e.g. backup/restore) using such a
334	>	database. examples/services re-written to illustrate use of "expected_db".
335	>
336	>	24. IBServices: TIBControlAndQueryService.WriteNextChunk no longer ignores isc_info_svc_timeout.
337	>	This avoids truncated backups when the server returns a timeout (busy) response.
338	>
339	>	25. TIBDatabase: isc_dpb_page_size now supported as a database parameter when using TIBDatabase.CreateDatabase.
340	>
341	>	26. TIBDatabase: DatabaseName property may now be prefixed by $TEMP$ or $DATADIR$ for local
342	>	databasenames. These are respectively expanded to the local system's temp directory
343	>	(including trailing delimiter) or to a prescribed data directory (including
344	>	trailing delimiter). Under Unix systems the data directory is a hidden directory
345	>	in the user's home directory. The hidden directory name is either the string returned
346	>	from the SysUtils "Vendor Name" or "IBX" if empty. In either case prefixed by a '.'.
347	>	Under Windows, the directory is the same as the Data Directory as decribed
348	>	above but instead prefixed by the User's application data path. These may be
349	>	used to improve application portability for Personal Databases.
350	>
351	>	27. TIBTable: FieldDefs property is no longer published. Due to the use of TIBFieldDef
352	>	this has not worked for a long time and is not useful either. FieldDefs should be
353	>	managed using the Fields Editor as with any other dataset. To access the fields
354	>	editor for a TIBTable component, double click on the component. The fields editor
355	>	is then displayed.
356	>
357	>	28. TIBDatabaseInfo: new properties/function
358	>	* DateDBCreated (returns date/time database created)
359	>	* TransactionCount (returns no. of active transactions)
360	>	* GetDatabasePage(PageNo: integer) (returns contents of specified database page - SYSDBA only).
361	>	* PagesFree (Firebird 3 or later)
362	>	* PagesUsed (Firebird 3 or later)
363	>	* Encrypted (returns true if database encrypted. (Firebird 3.0.3 or later only)
364	>	* EncryptionKeyName (returns the name of the encryption key if any (Firebird 3.0.3 or later only)
365	>
366	>	29. IBServices classes now provided the decoded release number in the (array) property ServerVersionNo.
367	>
368	>	30. TIBSecurityService now supports display/modification of the User Admin Role (Firebird 2.5 and later).
369	>
370	>	31. TIBConfigService now has a procedure SetAutoAdmin(Value: boolean) to enable/disable
371	>	the automtic mapping of privileged OS users to the RDB$ADMIN role (Firebird 2.5 and later).
372	>
373	>	32. TIBBackupService: New Option - NoDBTriggers equivalent to -nodbtriggers switch introduced
374	>	in the gbak utility at V.2.1 to prevent database-level and transaction-level triggers from
375	>	firing during backup and restore.
376	>
377	>	33. Both TIBBackupService and TIBRestoreService now support backup/restore statistics options
378	>	for verbose output using the new property "StatisticsRequested".
379	>	see https://firebirdsql.org/file/documentation/release_notes/html/en/2_5/rnfb25-util-gbak.html#rnfb25-util-gbakstats
380	>
381	>	34. TIBRestoreService: now supports new options RestoreMetaDataOnly (Firebird 2.5 and later).
382	>
383	>	35. TIBOnlineValidationService component added to the IBServices and the "Firebird Admin"
384	>	palette. This uses the online validation feature added in Firebird 2.5. The
385	>	services's properties enable inclusion/exclusion of tables and indexes using
386	>	regular expressions. See.
387	>	https://firebirdsql.org/file/documentation/release_notes/html/en/2_5/rnfb25-apiods-api.html#rnfb25-apiods-api-onlinevalidation
388	>
389	>	36. IBServices: procedure TIBConfigService.SetNoLinger added to set no linger
390	>	option on a database.
391	>
392	>	37. TIBCustomService: Assign method implemented to allow copying of service login
393	>	context between service API components. "Detach" method now only detaches
394	>	service when last reference to the service interface detaches. Tidy up of
395	>	code for SetActive and Attach methods including password hiding.
396	>
397	>	38. TIBDatabase: new properties: AuthenticationMethod and RemoteProtocol. Read only
398	>	and used to determine the auth method and protocol used for the connection.
399	>
400	>	39. TIBDatabase: ensure that SQLDialect setting is used when creating a database using
401	>	a Create Database Statement generated by IBX.
402	>
403	>	40. All IBServices now have an additional published property "PortNo". This may
404	>	be set to a non-standard port number when necessary. If zero then the default
405	>	port number is used.
406	>
407	>	41: TIBLookupComboeditBox: Ensure dataset updated when change selected with the keyboard
408	>	and not just the mouse.
409	>
410	>	42. TIBCustomDataset: reopen query if already active when a TIBControlLink is added.
411	>
412	>	43. TIBTreeview: new ImageIndexField and SelectedIndexField Property allows the
413	>	image index and selected image index for each node to be set from a database field.
414	>
415	>	44. TIBExtract: new extract type (etGrantsToUser) for use with eoDatabase. If included
416	>	then database schema includes grants to all users. If not present then the
417	>	only user grants included are those to User PUBLIC.
418	>
419	>	45. TIBTreeView: performance improvement. When expanding include both expanded node
420	>	and child nodes in dataset.
421	>
422	>
423	>	IBX Change Log  version                            (2.1-0) Fri, 15 Dec 2017 12:20:11 +0000
424	>
425	>	1. IBCustomDataset: Minor change of PChar to PByte for compatibility with fbintf
426	>	changes.
427	>
428	>	2. IBCustomDataset: Fixed use of incorrect datasize in TIBStringField.SetAsString.
429	>	Bug could result in truncated multi-byte character set values.
430	>
431	>	3. Changes consequential on moving fbintf character set utility functions from
432	>	IFirebirdAPI to IAttachment.
433	>
434	>	4. Avoid "Object is nil" error when opening a database with DefaultSystemCodePage = true
435	>
436	>	5. IBLookupComboEditBox: avoid race condition when autocompleting text that occasionally
437	>	results in autocomplete ignoring prefix text.
438	>
439	>	6. IBLookupComboEditBox: Ensure that cursor is not reset to start of text when
440	>	entering a new name into the text box.
441	>
442	>	7. IBCustomDataset: ensure that TIBStringField uses the field size reported by
443	>	Firebird rather than recomputing it.
444	>
445	>	8. Property Editor positioning tidy up: All IBX Property editors should now be
446	>	screen centre. Previously some were "poDesigned" which may be inappropriate
447	>	for multi monitor desktops.
448	>
449	>	10. TIBTreeView.FindNode: protect against error if zero length path or empty tree node.
450	>
451	>	11. TIBTransaction: On Force Disconnect do not raise an exception when problem ending
452	>	a transaction and always reset the object.
453	>
454	>	12. TIBQuery tidyup: remove unnecessary call to GetAffectedRows.
455	>
456	>	13. TIBXScript: Allow for override of database filename in Create Database statements.
457	>
458	>	14. IBLocaldb: Support initialisation of the database from an SQL script in addition
459	>	to a gbak format archive.
460	>
461	>	15. IBLocaldb: fix problem that stopped the OnSharedDataDir event from being recognised.
462	>
463	>	16. IBLocaldb: Drop database if error creating an empty database.
464	>
465	>	17. TIBTreeView: improve performance when selecting node - avoid refreshing dataset
466	>	unless selected node not in current dataset.
467	>
468	>	18. IBServices: SetDBParams method moved from TCustomIBLocalDBSupport (in IBLocalDB package)
469	>	to TIBCustomService, and IBlocalDB code tidy up.
470	>
471	>	19. IBTreeView: Initialise TIBTreeNode KeyValue to null to avoid unpredictable
472	>	behaviour due to uninitialised variable.
473	>
474	>	20. IBServices: Correct encoding of isc_spb_prp_write_mode in TIBConfigService from
475	>	integer to byte. Ditto isc_spb_prp_reserve_space and isc_spb_prp_access_mode.
476	>
477	>	21. IBSQL: When Database changed ensure that all resources are freed.
478	>
479	>	22. IBCustomDataset: When database changed ensure that queries an unprepared.
480	>
481	>	23. SQL Property Editors now use SynEdit with SQL Highlighter. New features include:
482	>	* Line Wrap on SQL Token boundaries (on user command)
483	>	* auto-complete table names in drop down list of table names
484	>	* Double click on tablename or field name adds to SQL text
485	>
486	>	24. IBDataOutput: print statistics using float (%f) format instead of decimal (%d).
487	>
488	>	25. IBTreeView: Call to FindNode: param type change from "array of Variant" to
489	>	TVariantArray. Seems to avoid memory corruption in Windows (probably a
490	>	workaround for a problem in fpc 3.0.4 win64).
491	>
492	>	26. IBDatabaseInfo: Code tidy up. Add check for database not assigned or not open.
493	>
494	>	27. IBDatabaseInfo: Remove memory leak when accessing database operation counts.
495	>
496	>	IBX Change Log  version                   (2.0-2) Fri, 24 Feb 2017 12:17:53 +0000
497	>
498	>	1. TIBDatabase.CreateDatabase: extract full DB Name from SQL using reg ex in order to
499	>	include remote system name.
500	>
501	>	2. TIBExtract: No longer include comment header and COMMIT statement for empty
502	>	tables when data included in output.
503	>
504	>	3. Profiling: IBSQL now has conditional compilation flags to enable query performance
505	>	and timing information to be written to stdout. This may be used to locate
506	>	performance bottlenecks.
507	>
508	>	4. SQLParser: only call "OnChanging" event handler when value is different.
509	>
510	>	5. IBDynamicGrid: Update handling of navigation keys for a TDateEdit
511	>
512	>	6. IBCustomDataset: Set internalunprepared flag when transaction ends. This ensures
513	>	that BindFields is called when the query is next activated. Avoids FieldName
514	>	not found error.
515	>
516	>	7. IBUpdate: This is a new IBX component similar to TIBUpdateSQL. It is more general
517	>	purpose and allows the programmer to define any action they want for Update, Insert
518	>	or Delete. This may be complex SQL (similar to a Trigger), application specific
519	>	filtering of updates, or use of statements such as Grant or Revoke instead of
520	>	normal DML. See User Manual for more information.
521	>
522	>	IBX Change Log  version                  (2.0-1) Mon, 09 Jan 2017 15:31:49 +0000
523	>
524	>	1. TIBEvents: Fix uninitialised variable that could result in lost events.
525	>
526	>	2. TIBExtract: Added support for FB3 "USAGE" privilege.
527	>
528	>	3. TIBExtract: data formatted as Charset set "octets" is now output using
529	>	hexadecimal notation.
530	>
531	>	4. TIBExtract: Binary Blobs and array data can now be embedded in INSERT statements
532	>	using a simple XML format.
533	>
534	>	5. TIBExtract: extract of individual Triggers and Stored Procedures can now include
535	>	grants to these objects.
536	>
537	>	6. TIBExtract: Stored Procedures and Views output in dependency order to avoid
538	>	dependency problems restoring complex databases.
539	>
540	>	7. TIBXScript: This component has been restructured to allow for the processing of
541	>	embedded XML in INSERT statements and to support interactive sources in addition
542	>	to non-interactive data sources such as files.
543	>
544	>	8. TIBXScript: CREATE DATABASE, DROP DATABASE, CONNECT statements are now supported.
545	>
546	>	9. TIBXScript: ISQL compatiable Set statements are now supported:
547	>	SET SQL DIALECT
548	>	SET TERM
549	>	SET AUTODDL
550	>	SET BAIL
551	>	SET ECHO
552	>	SET COUNT
553	>	SET STATS
554	>	SET NAMES <character set>
555	>
556	>	10. IBVersion unit added to hold current IBX Version Number information.
557	>
558	>	11. TIBExtract: Use character rather than byte length for VarChar procedure arguments.,
559	>	and domain definitions.
560	>
561	>	12. TIBExtract: Triggers now use SQL2003 syntax and database and transaction triggers
562	>	fully supported.
563	>
564	>	13. TIBExtract: when a database dump includes data, the generator values are now also set.
565	>
566	>	14: IBSQLEdit: Unit LCLPlatformDef added to uses clauses for lazarus 1.7 and later.
567	>
568	>	IBX Change Log  version     (2.0-0) Tue, 06 Dec 2016 10:33:44 +0000
569	>
570	>	See also doc/IBX4LazarusGuide.pdf for important information on
571	>	upgrading to IBX2.
572	>
573	>	1. Size property of TIBStringField is now the width in characters of the field
574	>	and not the byte length. This applies only to multi-byte character sets such
575	>	as UTF8. The original approach aligned with TStringField. However, the TStringField
576	>	code is not recognised as a bug and hence this change to align the behaviour.
577	>	The TStringField change is expected in fpc 3.2.0.
578	>
579	>	2. A new property AutoFieldSize: boolean has been added to TIBStringField. When
580	>	true (default) then Size property value saved in the lfm is ignored. Size is
581	>	always set from the dynamic information read from the database. It is unclear
582	>	why anyone would want to override this and set Size to false.
583	>
584	>	3. ibxscript: should now handle correctly a Case..End statement within a procedure
585	>	block.
586	>
587	>	4. IBDatabase: new property - CreateIfNotExists. If true and database does not
588	>	exist when an attempt is made to connect to it (run time only) then an attempt
589	>	is made to create the database.
590	>
591	>	5. IBDatabase: new event - OnCreateDatabase. This event is called after a database
592	>	has been successfully created as a result of a call to CreateDatabase or when
593	>	creating a database after it was found not to exist.
594	>
595	>	6.  DBControlGrid: a race condition could result in the wrong row image being
596	>	written to the cache. This has been avoided by a trip round the message
597	>	loop before rendering the row image.
598	>
599	>	7.  DBControlGrid: It is strongly recommended not to open the source DataSet for
600	>	a DBControlGrid during a Form's "OnShow" event handler. Under GTK2 this is
601	>	known to risk corrupt rendering of row images when the control is first
602	>	displayed. If necessary use "Application.QueueAsyncCall" to delay opening
603	>	of the dataset (see DBControlGrid examples) until the Form's Window has been created.
604	>
605	>	8.  DBControlGrid & IBDynamicGrid: Navigation keys should now work correctly with
606	>	a TDateEdit control located on an editor panel.
607	>
608	>	9.  TIBExtract: brought up-to-date plus many bug fixes.
609	>
610	>	10. DBControlGrid: Removed memory leak when updating rows.
611	>
612	>	11. TIBCMLocalDBSupport: fixed invalid free on upgrade.
613	>
614	>	IBX Change Log  version                                           (1.4-3) Thu, 22 Sep 2016 18:10:15 +0100
615	>
616	>	1. IBCustomDataset: When calling SetCodePage, no longer request transliteration
617	>	when target codepage is CP_NONE. This is a workaround for
618	>	http://bugs.freepascal.org/view.php?id=30622.
619	>
620	>	2. DBLog option removed from TIBStatisticalService - not supported by server
621	>	since Firebird 1.5.
622	>
623	>	3. ibxscript: An error is no longer generated for "on commit preserve rows" or
624	>	similar.
625	>
626	>	4. IBCodePage: updated mapping between codepages and character id.
627	>
628	>	5. ftWideString and ftWideMemo withdrawn. There is no UTF16 character set in
629	>	Firebird. Character sets with a char width of two are not UTF16.
630	>
631	>	6. Strings received from the database are now always transliterated into UTF8
632	>	regardless of the database character set or connection character set. This
633	>	is for compatibility with the LCL.
634	>
635	>	IBX Change Log  version  (1.4-2) Thu, 22 Sep 2016 15:25:27 +0100
636	>
637	>	1. IBBlob: Defer reading of blob until read method called. This avoids having to
638	>	read in an entire blob just to get the size of the blob. General performance
639	>	improvement when opening datasets containing blobs.
640	>
641	>	2. Clearing a  Blob now sets the corresponding field's modified flag.
642	>
643	>	3. IBLookupCombo: When not performing auto-complete, original query sort order
644	>	is now used.
645	>
646	>	4. IBDynamicGrid: Add OnSelectEditor event. Allows editor panel to be dynamically
647	>	determined.
648	>
649	>	5. IBDynamicGrid: Recompute column widths after dataset closed and re-opened.
650	>
651	>	6. IBLookupCombo: LazUTF8 added to uses clause to avoid compilation problems post
652	>	lazarus 1.6.0
653	>
654	>	7. IBControls. Removed "runtime" from list of paths to avoid "multiple packages"
655	>	compilation error.
656	>
657	>	IBX Change Log  version                                 (1.4-1) Tue, 17 May 2016 09:14:51 +0100
658	>
659	>	1. No character set specified for connection: when a text blob is retrieved, the
660	>	character set is determined by looking up the native character set using then
661	>	Firebird API. Otherwise a text mode blob is assumed to have the same character
662	>	set as the connection.
663	>
664	>	2. TIBGUIInterface: this is an internal interface. Minor type changes to allow
665	>	for Login Dialog returing a change to the database path.
666	>
667	>	3. Design Time Database and Server login Dialogs now allow the Database Name/Server Name
668	>	to be changed from that given in the TIBDatabase/TIBServer component and for the
669	>	entered value to be saved on a project specific basis (design time only).
670	>
671	>	4. IBDynamicGrid: TDBLookupCellEditor now compares its DataFieldName with the
672	>	column fieldname. If they are the same then it is acts as a look up for the KeyValue
673	>	Otherwise, it sets the column text to the selected ListField Value.
674	>
675	>	5. IBDynamicGrid: Only visible columns are now taken into account When recalculating
676	>	column width.
677	>
678	>	6. IBLookupComboEditBox: Fix error with autocomplete query when a RelationName is given
679	>	and a case insensitive search is requested.
680	>
681	>	7. IBDynamicGrid: No longer ignores notifications removing Column Totals controls
682	>	or column ListSource.
683	>
684	>	8. IBQuery: no longer performs unnecessary refresh of SQL Text (and hence avoids an
685	>	unprepare) when closing and the text has not changed.
686	>
687	>	9. IBSQL: Base the cursor name on a GUID instead of a hexstr version of the class pointer.
688	>	Less likely to cause a cursor re-use error on Windows.
689	>
690	>	10.SV5IPC: include workaround for OSX. FPC 3.0.0 has broken ipc module for darwin.
691	>	Expected to be fixed in 3.0.2. Hence workaround only applies to 3.0.0.
692	>
693	>	11. TIBTreeView: Guard against nil destination on record changed
694	>
695	>	12. AnsiString Code page support: TIBStringField.AsString and TIBMemoField.AsString now return a
696	>	string type with the code page set to reflect the returned field encoding after
697	>	Firebird driver transliteration, if any.  FPC 3.0.0 onwards only. Behaviour unchanged for
698	>	earlier versions.
699	>
700	>	13. AnsiString Code page support: Assigning to TIBStringField.AsString and TIBMemoField.AsString
701	>	will now result in transliteration to the code page specified for the Firebird driver
702	>	if the assigned string has a different code page. FPC 3.0.0 onwards only.
703	>
704	>	14. TIBDatabase: new property UseDefaultSystemCodePage. When set any lc_ctype parameter
705	>	is ignored and the lc_ctype value, when the database is opened, is set to align with
706	>	the DefaultSystemCodePage (FPC 3.0.0 onwards). Normally, this is what you want and should ensure
707	>	platform independence. Note: this applies to FPC 3.0.0 and earlier versions. Pre FPC
708	>	3.0.0, when this property is true, the lc_ctype is UTF8 except under windows when
709	>	the GETACP is used to determine the Windows code page.
710	>
711	>	15. TIBDatabase: new property DefaultCharSetName. This is the Firebird character set
712	>	name used as the lc_ctype when the database was opened. Only valid while the
713	>	Database is connected.
714	>
715	>	16. TIBDatabase: new property DefaultCodePage (FPC >=3.0.0 only). This is the codepage
716	>	id that corresponds to the DefaultCharSetName.
717	>
718	>	IBX Change Log  version                          (1.4-0) Mon, 15 Feb 2016 14:44:24 +0000
719	>
720	>	1. Unix: If Firebird Embedded Server shared object is loaded and a local database
721	>	path is given and database attach fails due to access permission issues on the
722	>	temp directory or security database, then the attach is retried with "localhost:"
723	>	prefixing the databasename. This should avoid problems when the database has to
724	>	be accessed by a local (e.g. classic) server and libfbembed is used.
725	>
726	>	2. Windows: revised search order for Firebird DLL:
727	>	i.   The Firebird Embedded Server in the application Directory.
728	>	ii.  If the FIREBIRD environment variable is set then the directory this
729	>	points to is searched for the FB Client DLL and then then underlying
730	>	"bin" directory.
731	>	iii. Registry Key HKEY_LOCAL_MACHINE\SOFTWARE\Firebird Project\Firebird Server\Instances
732	>	is used to locate the Firebird installation directory and the underlying
733	>	"bin" directory is searched for the FB Client DLL.
734	>	iv.  The Default installation directories C:\Program Files\Firebird\Firebird_2_x
735	>	are searched for the FB Client DLL.
736	>	v.   The PATH Environment variable is used to search for the FB Client DLL.
737	>	vi.  Finally the  PATH Environment variable is used to search for IBASE.DLL.
738	>
739	>	3. New Component: TIBXScript. This is an ISQL compatible SQL script execution engine.
740	>	See doc/readme.scriptengine and example applications.
741	>
742	>	4. New Component: TIBlocalDBSupport. This is a TIBDatabase support component intended to
743	>	simplify the use of the embedded firebird server on both Linux and Windows platforms.
744	>	See dpc/readme.localdatabase and example applications.
745	>
746	>	5. IBDynamicGrid: Reordering on column header click should now also work for
747	>	dynamic columns.
748	>
749	>	6. ISQLMonitor: (Windows only). Mutex added to TMultilockGate to avoid race condition
750	>	between incrementing/decrementing the lock count and signalling the event.
751	>
752	>	IBX Change Log  version           (1.3-2) Tue, 26 Jan 2016 14:39:54 +0000
753	>
754	>	1.3.2 was never formally released and only made available as beta copies.
755	>
756	>	1. DBControlGrid,IBDynamicGrid: Ignore down arrow and up arrow in TCustomMemo
757	>
758	>	2. IBDynamicGrid: Now deals correctly with a single column grid which has no indicator and autosize column
759	>
760	>	3. IBLookupComboEditBox: reset timer on each key press - avoids timer going off too early
761	>
762	>	4. IBDynamicGrid: Call event OnUpdateSortOrder even when aliasname not found in dataset
763	>	i.e. when it is a calculated field
764	>
765	>	5. IBDynamicGrid: Fix problem selecting a different row when expanded row at end of grid.
766	>	This problem was due to a race condition between recalculating row heights and
767	>	determining which row was selected by the mouse click. The row height calculation
768	>	is now deferred by an extra trip round the message loop allowing the row to
769	>	be always calculated on the current grid layout rather than risking it being
770	>	calculated on the grid layout after the expanded row has been shrunk.
771	>
772	>	6. IBLookupComboEditBox: avoid race condition between cm_killfocus and cm_exit on
773	>	Windows.
774	>
775	>	7. TIBStringField: Now has two new public properties: CharacterSetName: string and CharacterSetSize: integer;
776	>	These properties allow the (Firebird) character set name for the field and the max number of bytes per character
777	>	to be determined at runtime. See doc/readme.charactersets.html.
778	>
779	>	8. TIBWideStringField: This is a new field type with the same additional public properties as above and subclassed from
780	>	TWideStringField. This field type is used with the character size reported by Firebird is two. See doc/readme.charactersets.html.
781	>
782	>	9. TIBMemoField and TIBWideMemoField: new field types with the same additional public properties as above and subclassed from
783	>	TMemoField and TWideMemoField respectively. These field types are used with Blob subtype 1 and a characterset size of
784	>	1, 3 or 4 (TIBMemoField) or 2 (TIBWideMemoField). See doc/readme.charactersets.html.
785	>
786	>	Both also have a new published property "DisplayTextAsClassName". If false (default) the displaytext is generated
787	>	from the blob text by truncating the string to the displaywidth (in characters not bytes). A displaywidth of zero
788	>	implies no truncation.
789	>
790	>	10. IBLookupComboEditBox: Force autocomplete when EditingDone called and timer active.
791	>
792	>	11. IBDynamicGrid: Call DataSet.Append when entering edit mode and dataset empty and not in insert state
793	>	(avoids "Not in Edit Mode" error).
794	>
795	>	12. IBDynamicGrid: Correctly resize grid when one column width plus indicator.
796	>
797	>	13. IBDynamicGrid: Ensure Editor Panel has focus when shown - avoids Windows API calling
798	>	DBGrid.DoExit on subsequent mouse click (e.g. on child control such as a tabbed page control.
799	>
800	>	14. IBDynamicGrid: ignore up, down tab and return when editorpanel open and focus in a TCustomGrid descendent.
801	>
802	>	15. DBControlGrid: Stop flashing grid when dataset closed and then re-opened while DisabledControls
803	>
804	>	16. IBQuery: Bug fixed that prevented SQL being set programmatically once the Parser had been invoked.
805	>
806	>	17. IBCustomDataSet: On close, parser is now freed and Select SQL reverts to value before DataSet Opened.
807	>
808	>	IBX Change Log  version        (1.3-1) Sat, 18 Jul 2015 13:30:50 +0100
809	>
810	>	1.   OnCloseUp Event Handler added to TDBLookupProperties
811	>
812	>	2.   IBDynamicGrid: Call to OnEditorPanelHide is now last editor hide action - avoids
813	>	problem with row size when exception is called.
814	>
815	>	3.   IBLookupComboEditBox: Force pending autocomplete on combobox exit.
816	>
817	>	4.   IBDynamicGrid and DBControlGrid: Keyhandler now ignores up, down, escape and return keys if
818	>	in a TCustomComboBox and ignores return key if in a TCustomMemo
819	>
820	>	5.   IBLookupComboEditBox: Ensure that KeyValue is set correctly when full text
821	>	keyed in i.e. when autocomplete not performed
822	>
823	>	6.   Cleanup of "Uses" clauses and add console mode support. IBX should now support
824	>	console mode applications with all LCL required functions (builtin dialogs and
825	>	cursor management) centralised in the  IBDialogs unit. As long as "IBDialogs" is
826	>	not included in your project, IBX should compile and link with a console mode program.
827	>	See consolemode example and its "readme"for further guidence. DO NOT add the ibexpress package to a
828	>	console mode application or the IDE will automatically assume that your
829	>	application is GUI based. Instead, you should include the ibexpressconsolemode package.
830	>
831	>	IMPORTANT NOTE: IBDialogs must be included in GUI applications in order
832	>	to use the built in dialogs and cursor management. IBDialogs is
833	>	included by default if "ibexpress" is in your project source's "uses" clause.
834	>	This should be the case for all projects created through the IDE. This is why
835	>	you do not want to add the ibexpress package to console mode applications. The
836	>	ibexpressconsolemode package has been created to allow console mode programs
837	>	to avoid adding LCL dependencies when using IBX, while still having the
838	>	unit search paths set up correctly.
839	>
840	>	Existing users should check to ensure that the "ibexpress" unit is included in
841	>	each project's source file (*.lpr).
842	>
843	>	You may find that in order for the IDE to recognise that ibexpressconsolemode
844	>	exists, you have to first open the package in the IDE and then close it. This
845	>	adds it to the most recently accessed packages list. To make it permanently
846	>	available, add the package name to lazarus' staticpackages.inc file.
847	>
848	>	Thanks to Julio Jiménez for suggesting support of console mode.
849	>
850	>	7.   SQL Parser can now accept quoted strings that include new lines
851	>
852	>	8.   IBDynamicGrid: Lookup Cell Editor - the cursor is now positioned at end
853	>	of text on start of edit. This is particularly useful when tabbing to a
854	>	column and then inserting text.
855	>
856	>	9.   New Examples provided for IB Services and ISQLMonitor.
857	>
858	>	10. Fix error when writing to blob streams that recorded only the last buffer
859	>	write in the blob stream. In most cases, this did not cause a problem as the
860	>	IB Blob Stream is written in a single write. However, with the TDBImage, write
861	>	of a graphic type prefix was lost which caused a problem when the image could
862	>	not be automatically recognised.
863	>
864	>	11. Improve generation of random cursor names in TIBSQL - avoid risk of "cursor
865	>	already open" errors due to random numbers used for the cursor name being identical.
866	>
867	>	12. IBTable: corrected error that could result in an "Index out of bounds" error
868	>	when opening the table and the Primary Key is the last or only column in the
869	>	table. Thanks to Rick Hoover for the fix.
870	>
871	>	13. Fix TIBDatabase initialisation of lc_ctype under unix. Set to "UTF8" instead
872	>	of "UTF-8", and update list of available database character sets. Existing
873	>	users should check the current lc_ctype setting in their applications.
874	>
875	>	IBX Change Log  version  (1.2-4) Sat, 09 May 2015 12:38:29 +0100
876	>
877	>	1.  Firebird Services: avoid List Index error when opening a service with an
878	>	empty Params property.
879	>
880	>	2.  IBControls: Fix problem with new link mechanism introduced in 1.2.3.
881	>	Link now set up in Loaded method - avoids occasional failure to apply
882	>	SQL markup on initial open.
883	>
884	>	3.  "Employees" example performance improvements when scrolling.
885	>
886	>	4.  DBControlGrid: Correctly handle edit panel removal when panel is child control of a
887	>	TFrame. Force recaching of selected frame to avoid GTK race (results in a
888	>	random image cached).
889	>
890	>	5.  DBControlGrid: Should now react to changes in panel height at run time.
891	>
892	>	6.  IBDynamicGrid: Redraws rows below on panel editor hide - avoids blank space at end of grid
893	>	even when further rows exist.
894	>
895	>	7.  DBControlGrid: DefaultRowHeight is no longer a published property as it should
896	>	always be derived from panel height and setting this property can cause confusion.
897	>	Note for existing projects: to avoid a missing property error at run time,
898	>	each form using the DBControlGrid must be opened, updated and saved in the IDE
899	>	in order to remove the property value from the lfm.
900	>
901	>
902	>	IBX Change Log  version (1.2-3) Tue, 14 Apr 2015 14:11:17 +0100
903	>
904	>	1.  TIBStoredProc. Prepare now called by ParamByName to avoid need to always
905	>	call Prepare before setting parameter values.
906	>
907	>	2.  Error message on ParamByName (all cases) not found now includes name of missing parameter.
908	>
909	>	3.  Code tidyup and more robust handling of dsql information result vector.
910	>
911	>	4.  Support for centralised handling of transaction status changes. TIBTransaction
912	>	has been given additional events "AfterEdit", "AfterInsert", "AfterDelete", "AfterPost"
913	>	and "AfterExecQuery". The first three are called after the same event is called
914	>	for an IBCustomDataSet descendent using the Transaction. The fourth is called
915	>	after a call to TIBSQL.ExecQuery, again using this transaction. These new events
916	>	enable monitoring of transaction status changes for a given transaction to be
917	>	handled in a single place. For example, when a change to the dataset occurs
918	>	an indicator can be set that shows the user that in order to save changes,
919	>	the transaction should be committed.  Rather than doing this per dataset, this
920	>	can now be done per transaction.
921	>
922	>	5.  TDataSet.CheckBrowseMode automatically posts changes to the current row when
923	>	the dataset is scrolled. However, any changes to the current row are, by default,
924	>	discarded when the dataset is closed. TIBDataSet, TIBQuery and TIBTable now
925	>	have a new property "DataSetCloseAction" that adds automatic posting of changes
926	>	on dataset close. If this property is set to dcDiscardChanges (default) then the
927	>	behaviour is unchanged from previous versions. if the value is set to dcSaveChanges
928	>	then IBX will attempt to post any unsaved changes before the dataset is closed
929	>	(and after the BeforeClose event handler is called). The exception is when the
930	>	dataset is being closed as a result of a transaction rollback. In this case,
931	>	no action is taken and any unsaved  changes are discarded. This avoids both
932	>	unnecessary overhead and the risk that a validation error may occur in the Post
933	>	raising an exception and thereby preventing a rollback.
934	>
935	>	6.  String Field sizes and Display Widths should now be correct for multi-byte character sets.
936	>	In earlier versions, the Display Width was set to the maximum byte width rather than the character
937	>	width. Display Widths are now corrected by dividing by the max byte width per character.
938	>	For UTF8 character sets, the byte width is four and hence the Display Width will be
939	>	the byte width divided by 4. The byte width of each character set is determined
940	>	dynamically when the database connection is estabished from the RDB$CHARACTER_SETS
941	>	system table. (see also http://bugs.freepascal.org/view.php?id=27766).
942	>
943	>	7.  SQLParser will now correctly parse SQL Text which contains ':' within quoted string.
944	>
945	>	8.  IBLookupComboEditBox: List should now always be restored to full list when the
946	>	control loses focus. Default Key press default interval reduced to 200ms.
947	>
948	>	9.  DBControlGrid: Ensure that selection is changed to newly appended row, even
949	>	when dataset rows are less than visible rows.
950	>
951	>	10. IBDynamicGrid: Editor Panel is not shown on indicator click if Datasource
952	>	does not exist or DataSet is empty. More responsive on dataset open. New event
953	>	OnRestorePosition. Column sort disabled if no header row.
954	>
955	>	11. IBTreeView: improved handling of response to "Add Node". Avoid scrolling dataset
956	>	while dataset state is dsInsert. Avoids posting errors.
957	>
958	>	12. IBControls: New mechanism for distributing UpdateSQL and UpdateParams events. This is to
959	>	avoid conflict with DisableControls/EnableControls with Master/Detail linked tables.
960	>
961	>	13. IBLookupComboEditBox: Now avoids SQL Errors when combo box text contains single quotes.
962	>
963	>	14. TIBDataSet and TIBQuery: new Event - OnValidatePost. This event has been introduced
964	>	to solve a specific problem. That is when the dataset cursor is moved (e.g. by
965	>	a grid mouse click and the current row is being edited or inserted. In this case, TDataset
966	>	always "posts" the current record regardless or whether or not it may be more appropriate
967	>	to cancel any changes; the post occurs before the "BeforeScroll" event fires due to the way the
968	>	"MoveBy" function is implemented by TDataSet. The OnValidatePost event is called
969	>	as the first action of the "Post" method and allows the handler to convert the Post
970	>	into a Cancel if that is the appropriate action on moving to a different row. This is
971	>	achieved by returning with "CancelPost" argument set to true. Note that an exception could be
972	>	raised here, but it may still be more appropriate to validate a post and signal
973	>	a problem in the "BeforePost" event handler. See readme.automaticposts.xhtml)
974	>
975	>	15. On Unix derived systems, the Firebird library name can now be given as a colon
976	>	separated list. Each library name on the list is tried in turn, in left to right
977	>	order with the first found being used as the firebird library. By default, on Linux,
978	>	the library name list is 'libfbembed.so.2.5:libfbembed.so.2.1:libfbclient.so.2'. This can be
979	>	overidden by the FBLIB environment variable or the OnGetLibraryName function.
980	>
981	>	Note: when using the libfbembed.so, if you prefix the database name with "localhost:"
982	>	then it will still attempt to access the database via the Firebird Server and will
983	>	require a username and password. If only the pathname is given, then the username
984	>	and password should be omitted and the unix file permissions are used to grant
985	>	access.
986	>
987	>	IBX Change Log  version  (1.2-2) Sat, 14 Mar 2015 11:35:04 +0000
988	>
989	>	1.  A new IBControl - TDBControlGrid has been added. TDBControlGrid a lookalike
990	>	rather than a clone for the Delphi TDBCrtlGrid. TDBControlGrid is a single column grid
991	>	that replicates a TWinControl - typically a TPanel or a TFrame in each row. Each row
992	>	corresponds to a row of the linked DataSource. Any data aware control on the
993	>	replicated (e.g.) TPanel will then appear to have the appropriate value for the row.
994	>
995	>	2. As suggested by Julio Jiménez, a new property "SQLHourGlass" has been added to TIBDatabase.
996	>	When set to false (default true), the Hour Glass cursor is supcpressed and no cursor change
997	>	takes place during database access. This may be useful when there are performance issues with
998	>	the change of cursor. Setting the property to false suppresses the change of cursor.
999	>
1000	>	3. As suggested by Julio Jiménez, a new property "AutoCommit" has been added to TIBDataSet, TIBQuery
1001	>	and TIBTable. When set to acCommitRetaining (Default: acDisabled), a call is made to
1002	>	Transaction.CommitRetaining immediately after every Post or Delete. This has the effect of
1003	>	making all changes permanent immediately rather than when the transaction is explicitly
1004	>	committed.
1005	>
1006	>	4. Experimental support for the Firebird 3 SQL_BOOLEAN type has been added while still
1007	>	using the legacy Firebird API. Thanks to Gabor Boros for helping to test this feature.
1008	>
1009	>	IBX Change Log  version      (1.2-1) Fri, 13 Mar 2015 11:14:15 +0000
1010	>
1011	>	Development version only.
1012	>
1013	>	IBX Change Log  version   (1.2-0) Thu, 26 Feb 2015 10:34:04 +0000
1014	>
1015	>	1. An internal select SQL Parser is now available for TIBCustomDataset descendents.
1016	>	This is typically used during an "OnBeforeOpen" event handler to manipulate the
1017	>	"Where" and "Having" clauses to implement user specified filters of arbitrary
1018	>	complexity.
1019	>
1020	>	2. A new Component Palette entry "Firebird Data Controls" is now available. This has
1021	>	three new data aware controls dependent on IBX and which make use of the SQL Parser.
1022	>	These are:
1023	>
1024	>	- TIBLookupComboEditBox
1025	>	- TIBDynamicGrid
1026	>	- TIBTreeview
1027	>
1028	>	TIBLookupComboEditBox is a TDBLookupComboBox descendent that implements "autocomplete"
1029	>	of typed in text and "autoinsert" of new entries. Autocomplete uses SQL manipulation
1030	>	to revise the available list and restrict it to items that are prefixed by the
1031	>	typed text (either case sensitive or case insensitive). Autoinsert allows a
1032	>	newly typed entry to be added to the list dataset and included in the available
1033	>	list items.
1034	>
1035	>	TIBDynamicGrid is a TDBGrid descendent that provides for:
1036	>	- automatic resizing of selected columns to fill the available row length
1037	>	- automatic positioning and sizing of a "totals" control, typically at the
1038	>	column footer, on a per column basis.
1039	>	- DataSet resorting on header row click, sorting the dataset by the selected column.
1040	>	A second click on the same header cell reversed the sort order.
1041	>	- Support for a "Panel Editor". That is on clicking the indicator column, the row
1042	>	is automatically expanded and a panel superimposed on it. The panel can have any
1043	>	number of child controls, typically data aware controls with the same datasource
1044	>	as the grid allowing for editing of additional fields and more complex editors.
1045	>	- Reselection of the same row following resorting.
1046	>	- A new cell editor that provides the same functionality as TIBLookupComboEditBox.
1047	>	Its properties are specified on a per column basis and allows for one or more
1048	>	columns to have their values selected from a list provided by a dataset.
1049	>	Autocomplete and autoinsert are also available. The existing picklist editor
1050	>	is unaffected by the extension.
1051	>
1052	>	TIBTreeView is a data aware TCustomTreeView.
1053	>
1054	>	3. When getting a field value using FieldByName.AsVariant, an SQL_INT64 with a
1055	>	zero scale will no longer return an error. An Int64 will be returned instead.
1056	>
1057	>	4. TIBTransaction now has events for Before and After Transaction End and a new function
1058	>	"GetEndAction" allowing the EndAction to be accessed by these event handlers.
1059	>
1060	>	5. TIBQuery can now handle correctly queries which contain the same keyword parameter
1061	>	repeated multiple times.
1062	>
1063	>	6. TIBUpdateSQL will no longer return an error when "RowsAffected" is <> 1. This error
1064	>	check used to get in the way of using Stored Procedures, and "Update or Insert"
1065	>	statements.
1066	>
1067	>	7. Insert, Modify and Delete property Editors now support Query Generation from
1068	>	Stored Procedures.
1069	>
1070	>	8. Three new examples illustrate the use of the new IB Controls
1071	>
1072	>
1073	>	IBX Change Log  version  (1.1-0) Mon, 07 Jul 2014 14:01:07 +0100
1074
1075		1. TIBXSQLVAR code clean up and optimisation to improve client side "prepare" and parameter
1076		setting performance. See "readme.field+param.names in the doc folder.(Thanks to

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