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Revision 270 by tony, Fri Jan 18 11:10:37 2019 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 (2.3-3 Build 11336) 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 > 3. TIBExtract: 64-bit integer types are now correctly extracted as "BIGINT" and
24 >   not "INT64".
25 >
26 > 4. New published properties for TIBCSVDataOut, TIBInsertStmtsOut and TIBBlockFormatOut
27 >   These are:
28 >    property TimestampFormat: string;
29 >    property DateFormat: string;
30 >    property TimeFormat: string;
31 >
32 >   Respectively, these provide the date time format templates for SQL types: TIMESTAMP,
33 >   DATETIME and TIME. The format strings use the standard FPC date/time format
34 >   characters (see https://www.freepascal.org/docs-html/rtl/sysutils/formatchars.html).
35 >
36 >   If any of the above properties are set to an empty string, then the locale default
37 >   is used. This uses the ShortDateFormat and the LongTimeFormat. In timestamp, the
38 >   locale default is extended by appending '.zzz' to include milliseconds.
39 >
40 >   TIBCSVDataOut by default sets these properties to the empty string, while the other
41 >   two use: 'yyyy.mm.dd hh:nn:ss.zzz', 'yyyy.mm.dd' and 'hh:nn:ss.zzz' respectively.
42 >
43 > 5. New published property for TIBCSVDataOut:
44 >     property QuoteStrings: boolean (default true)
45 >
46 >   If false then strings are unquoted, otherwise, the QuoteChar property value is
47 >   used to delimit each and every string in the output.
48 >
49 > 6. New published properties for TIBCSVDataOut:
50 >    property FieldSeparator: string;
51 >    property HeaderSeparator: string;
52 >
53 >   Respectively, these provide the separator character(s) used to separate fields
54 >   in data and header rows. Both default to ','.
55 >
56 > 7. New published properties for TIBCSVDataOut and TIBBlockFormatOut:
57 >    TOnFormatTextString = procedure(sender: TObject; var TextString: string) of object;
58 >    property OnFormatTextString;
59 >
60 >   This event handler can be used to process text strings before they are included
61 >   in the output e.g. to replace unprintable characters with alternative strings.
62 >   This only applies to columns with an SQL Type of SQL_VARYING and SQL_TEXT.
63 >
64 > 8. TIBDataSet now raises an exception when ParamByName called with an invalid parameter name.
65 >
66 > 9. TIBQuery now uses IBX SQL Parser instead of TParams SQL parser in order to ensure
67 >   consistency with SQL queries.
68 >
69 > 10. CaseSensitiveParameterNames property added to TIBSQL, TIBDataSet and TIBQuery.
70 >    When true, SQL statement parameter names are parsed case sensitive. Note for
71 >    TIBDataSet only applies to Select query.
72 >
73 > IBX Change Log  version (2.3-2) Wed, 05 Dec 2018 12:19:23 +0000
74 >
75 > 1. Remove need to check for IsMultiThread by providing access to GUI timers via
76 >   IBGUIInterface. Note: master/detail delay timer does not apply to console
77 >   mode apps.
78 >
79 > 2. TIBCustomDataSet: SQLParser ignored if it does not contain a valid select
80 >   statement. This avoids problems if "Execute Block" is used as the Query.
81 >
82 > 3. IBSQLParser now uses the common SQL tokeniser from fbintf. This replaces the
83 >   internal SQL tokeniser routines.
84 >
85 > 4. IBSQLParser: new property NotaSelectStmt. Set to true if SQL fails to parse
86 >   as a select statement, with or without CTEs.
87 >
88 > 5. IBSQLParser: parser now recognises the "ROWS" clause.
89 >
90 > 6. TIBXScript now uses the common SQL tokeniser from fbintf. This replaces the
91 >   internal SQL tokeniser routines.
92 >
93 > 7.  Fix error in TIBXScript processing of "set" statements. This avoids exceptions
94 >    being raised for valid set statements processed by a data formatter.
95 >
96 > 8. New published property for TIBDatabase and TIBXServicesConnection. This is
97 >   FirebirdLibraryPathName: string. If not empty it is used to explicitly specify
98 >   the path of the Firebird Library used by the database/services connection.
99 >
100 > 9. New read only public property for TIBDatabase and TIBXServicesConnection. This
101 >   is FirebirdAPI and returns the IFirebirdAPI interface used by the database/
102 >   services connection.
103 >
104 > 10.SQL Property editors now quote parameter names if "Quote identifier" is selected
105 >   or param name is not a valid SQL identifier.
106 >
107 > 11. IBLookupComboEditBox: In Lazarus 2.0, TDBLookupComboBox takes a more restrictive
108 >    view of whether the text box should be editable when no DataSource is specified.
109 >    TIBLookupComboEditBox has been updated to workaround this problem. As long as
110 >    ReadOnly is false, the text box is editable when no DataSource is specified.
111 >
112 > 12. AllowUseOfFBLIB is now set to "true" at design time. This is to allow use of
113 >    the FBLIB environment variable. If you do not want to permit this then you
114 >    must modify the Register procedure in the design/IBDBReg.pas unit to remove
115 >    this setting.
116 >
117 > IBX Change Log  version                 (2.3-1) Thu, 25 Oct 2018 14:39:45 +0100
118 >
119 > 1. IBCustomDataset: replace deprecated function ValidUTF8String with call to
120 >   Utf8EscapeControlChars
121 >
122 > IBX Change Log  version                (2.3-0) Mon, 16 Apr 2018 09:48:06 +0100
123 >
124 > IMPORTANT: the source code tree has been re-organised for IBX 2.3. Please remove
125 > all previous copies of the IBX source code tree before installing this release.
126 >
127 > The IBX packages used by most users have not changed, with one exception. The
128 > IBServices unit has been moved to the package iblegacyServices.lpk. To continue
129 > to use the IBServices unit in your applications, please add the iblegacyServices
130 > to the list of dependencies. To do this, open the Project Inspector and select
131 > Add->New Requirement and select "ibLegacyServices" from the list of available
132 > packages.
133 >
134 > 1. New unit IBXServices. The IBXServices unit is a re-architectured update of
135 >   the IBServices unit providing what is intended to be a clearer and easier to
136 >   use set of IB Services components. See Chapter 10 of the IBX User Guide for
137 >   more information and the guide to "Firebird Service Management Using IBX".
138 >   As indicated above, the legacy services components are still available and
139 >   provided in a separate package. There is no need to update working applications
140 >   using the older versions except for an additional package dependency.
141 >
142 > 2. The IBX packages and source code tree have been re-organised in an attempt to
143 >   finally get rid of the "duplicate ppu" warnings. This re-organisation should
144 >   not affect existing users. Section 2.3 of the IBX User Guide describes the
145 >   new set of IBX packages.
146 >
147 > 3. The ibx/examples/DBAdmin and the ibx/examples/services example have been
148 >   updated to use the new Services API components.
149 >
150 > 4. The iblocal package has been updated to use the new Services API components.
151 >
152 > 5. procedure SetAutoAdmin; in the new IBX Services this method is now a member of
153 >   TIBXSecurityService. It had been wrongly classified in the previous version
154 >   as a per database configuration item. It is global to a server and hence
155 >   correctly positioned as part of the Security Package. In the DBAdmin example,
156 >   the setting has moved to the mappings page.
157 >
158 > 6. TIBXScript: IgnoreCreateDatabase added. If true then CREATE DATABASE statements
159 >   are ignored.
160 >
161 > 7. TIBDatabase: DropDatabase now ensures that all transactions have been properly
162 >   closed before the database is dropped. Before and After Disconnect event handlers
163 >   are also fired.
164 >
165 > 8. TIBTransaction: OnStartTransaction event now fires every time the transaction
166 >   is started and not just the first time.
167 >
168 > 9. IBDataOutput: Use FormatFloat for all performance statistics to avoid platform
169 >   depenendency with comp type.
170 >
171 > 10. IBDataOutput: select query data output is now sent to stdout instead of stderr.
172 >
173 > 11. TIBDatabase: Remove regression. If a user login dialog changes the DatabaseName
174 >    then this is recognised and not ignored.
175 >
176 > 12. TIBDataSet, TIBQuery, TIBTable: additions:
177 >    function GetRowsAffected(var SelectCount, InsertCount, UpdateCount, DeleteCount: integer): boolean;
178 >    function GetPerfStatistics(var stats: TPerfCounters): boolean;
179 >    property EnableStatistics: boolean read FEnableStatistics write SetEnableStatistics;
180 >
181 >    GetRowsAffected returns the affected row counts from the last insert/update/delete
182 >    if EnableStatistics = true then GetPerfStatistics returns the current stats
183 >    counters for the select query. Note: stats accumulate after each fetch from
184 >    the database. To get total query cost after open, call the "Last" method
185 >    and then GetPerfStatistics.
186 >
187 >    See ibx/examples/consolemode for an example of the use of GetPerfStatistics
188 >
189 > 13. TIBExtract: Identity columns DDL. "Start with clause" now correctly encapsulated
190 >    in parenthesises.
191 >
192 > 14. TIBExtract: new published property "AlwaysQuoteIdentifiers". If true then in dialect 3
193 >    SQL identifiers are always delimited by double quotes. If false, then they are
194 >    only delimited if the identifier is a reserved word, contains lower case or special
195 >    characters. Set this property to true to retain previous behaviour.
196 >
197 > 15. Insert SQL Property Editor. In Insert Returning Clause, Identity column names
198 >    are now inserted in double quotes if not Reserved Words or valid SQL Identifiers.
199 >
200 > 16. TIBDataSet, TIBQuery, TIBTable: addition:
201 >       property MasterDetailDelay: integer {defaults to zero}
202 >
203 >    When non-zero and the dataset is a detail table referencing a master table
204 >    through either a MasterSource (TIBTable) or a DataSource (TIBDataSet, TIBQuery)
205 >    then a synchronisation delay is added (in milliseconds) between the master
206 >    row changing and the detail dataset being re-opened. If the master dataset
207 >    is scrolled before the delay expires then the delay is reset. This can be used
208 >    to avoid performance overheads when scrolling through a large master dataset.
209 >
210 >    Note: uses fptimer and hence requires a thread manager. Under Linux the
211 >    chreads unit must be included in your project. TTimer is not used in order
212 >    to avoid an LCL dependency. Requires FPC 3.0.2 or later.
213 >
214 > 17. TIBExtract: User role grants now excluded when etGrantsToUser not specified
215 >    with Extract Option eoDatabase.
216 >
217 > 18. TIBLookupComboEditBox: Workaround added for https://bugs.freepascal.org/view.php?id=33428
218 >    When a deLayoutChanged event is reported on the ListSource dataset, the
219 >    combobox text is updated. This allows a listsource (detail) to be in a Master/Detail
220 >    relationship with the control's datasource (master).
221 >
222 > 19. TIBExtract: Full BigInt value range now supported for Generators/Sequences.
223 >
224 > 20. TIBExtract: Select Procedures (Procedure type 1) now include "SUSPEND;" clause in their
225 >    stubs. Pedantic fix really, as procedures output in dependency order anyway.
226 >
227 > 21. TIBExtract: Package Headers and Package Bodies are now included in the extracted
228 >    DDL (Firebird 3 and later only).
229 >
230 > 22. TIBLookupComboBox Autocomplete Fixes:
231 >    i. Only appended text is now selected after autocomplete.
232 >    ii. Uppercase keys no longer ignored for autocomplete.
233 >    iii. Retain Prefix case is now honoured correctly.
234 >    iv. When a DataSource is assigned, typing after autocomplete now extends prefix
235 >        before autocomplete performed. i.e. behaviour now the same as when
236 >        no DataSource assigned.
237 >
238 > 23. TIBXScript: Single Line Comments starting with '--' are now ignored when occurring
239 >    between SQL statements.
240 >
241 > 24. TIBExtract: New published property CaseSensitiveObjectNames. If false (default) then
242 >    ObjectNames are converted to upper case before matching against metadata object
243 >    names, unless the objectname is delimited by double quotes, in which case, the
244 >    double quotes are removed and the remaining string is used (unmodified) to match
245 >    against the metadata object name.
246 >
247 >    If true then the ObjectName is used as is without modification and matched
248 >    against the metadata object name. No attempt is made to remove double quotes.
249 >
250 > 25. TIBExtract: New Extract Types: etDatabaseTriggers and etDDLTriggers. When used
251 >    with eoTrigger, these extract types can be used to select only Database Triggers,
252 >    or DDL Triggers or both. Ignored when etTable or etTrigger included in Extract Types.
253 >
254 > 26. TIBXScript: If an exception occurs during the processing of a statement, the
255 >    statement separate character is now reset to the default (';').
256 >
257 > 27. TIBDatabase: Reconnect method added and used by TIBXScript for reconnect.
258 >
259 > 28. TIBXScript: Transaction is no longer automatically reactivated immediately processing
260 >    a commit or reconnect statement and instead activated only when next SQL statement
261 >    is executed.
262 >
263 > 29. TIBSQL.HasField should no longer generate and exception when the field does not exist.
264 >
265 > 30. TIBXScript: case insensitive regex now used when matching statements instead of
266 >    converting statement to upper case.
267 >
268 > 31. TIBExtract: metadata comments now supported. New published property
269 >    IncludeMetaDataComments (default true). If true then metadata comments included
270 >    in extracted DDL. New Extract Object member eoComments. This may be used with
271 >    ExtractObject method to list all metadata comments.
272 >
273 > 32. TIBExtract: ListObjectNames method added.
274 >
275 > 33. Updated Database component editor to support additional connection string
276 >    types.
277 >
278 > IBX Change Log  version  (2.2-0) Wed, 28 Feb 2018 10:57:45 +0000
279 >
280 > NOTE: THE LOCATIONS OF SOME OF THE UNIT DIRECTORIES HAS CHANGED FROM IBX 2.1. THIS IS TO
281 > AVOID DUPLICATE PPU WARNINGS. PLEASE REMOVE EARLIER VERSIONS OF IBX BEFORE INSTALLING THIS
282 > RELEASE.
283 >
284 > NOTE: THE DBADMIN DEMO REQUIRES THAT THE MemDSLaz PACKAGE IS INSTALLED IN THE LAZARUS IDE.
285 >
286 > 1. IBExtract: Identity columns - add additional check for null column for generator name.
287 >
288 > 2. IBCustomDataSet: Insert and Modify (Update) queries now recognise and process SQL RETURNING clauses.
289 >   The main use for this is for Firebird 3 Identity columns (see IBXDocumentation 6.6.8 for further
290 >   information). However, this is also a very useful mechanism for returning updated computed by
291 >   column values. Values returned as a result of executing an Insert or Update statement
292 >   replace existing values in the current row for each corresponding column.
293 >
294 >   Previously, if a dataset's select query included read only (computed by) fields then
295 >   an automatic row refresh was performed after an insert or update query had been processed,
296 >   irrespective of the setting of the "ForcedUpdates" property. This has changed such
297 >   that an automatic refresh is no longer performed if an insert or update query contains
298 >   a returning clause that updates one or more fields on the current row. A full row
299 >   refresh is only performed if (a) ForcedRefresh is true or (b) the query does not return any
300 >   field values and the select query contains read only fields. Use of Insert/update
301 >   returning should be significantly more efficient than executing a refresh query.
302 >
303 >   This behaviour change is intended to be backwards compatible and there should be no need to change
304 >   existing programs, other than to improve performance by using the new capability.
305 >
306 > 3. IBCustomDataSet: DELETE...RETURNING queries are now also recognised. However, as
307 >   they are called when the dataset row is being deleted, there is no value in
308 >   updating the current record from the query result. Instead, a new event handler
309 >   "OnDeleteReturning" is provided. If a DELETE...RETURNING query is execute and
310 >   an OnDeleteReturning event handler is provided then it is called with the IResults returned
311 >   by the query. The event handler can then interrogate the query results and
312 >   perform whatever action is necessary. For example to confirm, to the user,
313 >   the deletion of a row with the returned values.
314 >
315 > 4. TIBTable: generated Insert and Update SQL now include a RETURNING clause for
316 >   any Computed By or Identity Columns. The IBTables example has been updated to
317 >   illustrate the computation of the employee Full Name on update.
318 >
319 > 5. TIBTable: The GeneratorField property is now published.
320 >
321 > 6. The InsertSQL property editor now shows Firebird 3 Identity columns separate from the Field List.
322 >   When InsertSQL is generated, the Identity columns are not included in the list of values to
323 >   be inserted. A RETURNING clause is added to the insert statement to return the value of
324 >   each Identity column after the insert is executed.
325 >
326 > 7. The Modify Property Editor now generates Update SQL with Computed By fields in Update..Returning clause.
327 >   Similarly Insert Property Editor now generates Insert SQL with Computed By fields in
328 >   Insert..Returning clause.
329 >
330 > 8. TIBGenerator: small performance improvement by not preparing query each time
331 >   a new value is generated.
332 >
333 > 9. TIBSQL: Free resources when transaction changed - ensures new transaction is used.
334 >
335 > 10. Property editors will now sync table name to a System Table when "Include System
336 >    Tables" is selected and the query is for a System Table.
337 >
338 > 11. Minor Performance improvement to handling of Date/Time types in IBX datasets. Field
339 >    values are no longer converted to milliseconds from TDateTime and then back again
340 >    to TDateTime (the conversion to milliseconds is the default TDataset approach).
341 >
342 > 12. Property Editors handling of Stored Procedures.
343 >    * Select and Refresh: only show a list of stored procedures that return multiple rows (proc type 1) and
344 >      which have a non-empty list of output parameters (i.e. stored procedures that may be used in a select
345 >      query).
346 >    * Modify and Insert: only show a list of stored procedures that return at most a singleton row (proc type 2).
347 >
348 > 13. IBStoredProc: Now supports Firebird 3 Package Names. A new published property PackageName
349 >    can be used to select a package. If non-empty, the stored procedure name is
350 >    expected to be a stored procedure defined in the specified package and the
351 >    generated SQL will be as required for a stored procedure located in a package.
352 >
353 > 14. Select, Refresh, Insert, Modify, Delete and TIBSQL SQL Property Editors now include
354 >    a "Package Name" drop down box to allow selection of a Firebird 3 Package from
355 >    which a stored procedure can be selected. With no package name selected, non-package
356 >    stored procedures are listed.
357 >
358 > 15. TIBXScript: turn off database login prompt when reconnecting - this avoids prompting
359 >    for password on reconnect.
360 >
361 > 16. TIBDatabase: use IAttachment for connection default character set id, code page
362 >    and character set name.
363 >
364 > 17. TIBDatabaseInfo: cache ODS Version information on first request in order to minimise
365 >    DB info lookups"
366 >
367 > 18. IBExtract: now supports DDL Triggers and Grants to DDL objects.
368 >
369 > 19. Add a property Editor for TIBUpdate.RefreshSQL.
370 >
371 > 20. IBUpdate: Ignore non-data (e.g. calculated) fields when assembling list of input
372 >    parameters. This stops an exception being raised when the field cannot be
373 >    located in the record buffer.
374 >
375 > 21. Property Editors now automatically include System Tables when opened and when the query table
376 >    is a System Table.
377 >
378 > 22. IBServices: SQRB and SRB buffers are now reset when service query throws an exception.
379 >    This avoids errors due to a stale SQRB or SRB being used for the next query.
380 >
381 > 23. IBServices: Service attach parameters now include "expected_db". This is used to
382 >    add the SPB item isc_spb_expected_db. This names a database using
383 >    an alternative Security Database (FB3 onwards) and allows (e.g. backup/restore) using such a
384 >    database. examples/services re-written to illustrate use of "expected_db".
385 >
386 > 24. IBServices: TIBControlAndQueryService.WriteNextChunk no longer ignores isc_info_svc_timeout.
387 >    This avoids truncated backups when the server returns a timeout (busy) response.
388 >
389 > 25. TIBDatabase: isc_dpb_page_size now supported as a database parameter when using TIBDatabase.CreateDatabase.
390 >
391 > 26. TIBDatabase: DatabaseName property may now be prefixed by $TEMP$ or $DATADIR$ for local
392 >    databasenames. These are respectively expanded to the local system's temp directory
393 >    (including trailing delimiter) or to a prescribed data directory (including
394 >    trailing delimiter). Under Unix systems the data directory is a hidden directory
395 >    in the user's home directory. The hidden directory name is either the string returned
396 >    from the SysUtils "Vendor Name" or "IBX" if empty. In either case prefixed by a '.'.
397 >    Under Windows, the directory is the same as the Data Directory as decribed
398 >    above but instead prefixed by the User's application data path. These may be
399 >    used to improve application portability for Personal Databases.
400 >
401 > 27. TIBTable: FieldDefs property is no longer published. Due to the use of TIBFieldDef
402 >    this has not worked for a long time and is not useful either. FieldDefs should be
403 >    managed using the Fields Editor as with any other dataset. To access the fields
404 >    editor for a TIBTable component, double click on the component. The fields editor
405 >    is then displayed.
406 >
407 > 28. TIBDatabaseInfo: new properties/function
408 >     * DateDBCreated (returns date/time database created)
409 >     * TransactionCount (returns no. of active transactions)
410 >     * GetDatabasePage(PageNo: integer) (returns contents of specified database page - SYSDBA only).
411 >     * PagesFree (Firebird 3 or later)
412 >     * PagesUsed (Firebird 3 or later)
413 >     * Encrypted (returns true if database encrypted. (Firebird 3.0.3 or later only)
414 >     * EncryptionKeyName (returns the name of the encryption key if any (Firebird 3.0.3 or later only)
415 >
416 > 29. IBServices classes now provided the decoded release number in the (array) property ServerVersionNo.
417 >
418 > 30. TIBSecurityService now supports display/modification of the User Admin Role (Firebird 2.5 and later).
419 >
420 > 31. TIBConfigService now has a procedure SetAutoAdmin(Value: boolean) to enable/disable
421 >    the automtic mapping of privileged OS users to the RDB$ADMIN role (Firebird 2.5 and later).
422 >
423 > 32. TIBBackupService: New Option - NoDBTriggers equivalent to -nodbtriggers switch introduced
424 >    in the gbak utility at V.2.1 to prevent database-level and transaction-level triggers from
425 >    firing during backup and restore.
426 >
427 > 33. Both TIBBackupService and TIBRestoreService now support backup/restore statistics options
428 >    for verbose output using the new property "StatisticsRequested".
429 >    see https://firebirdsql.org/file/documentation/release_notes/html/en/2_5/rnfb25-util-gbak.html#rnfb25-util-gbakstats
430 >
431 > 34. TIBRestoreService: now supports new options RestoreMetaDataOnly (Firebird 2.5 and later).
432 >
433 > 35. TIBOnlineValidationService component added to the IBServices and the "Firebird Admin"
434 >    palette. This uses the online validation feature added in Firebird 2.5. The
435 >    services's properties enable inclusion/exclusion of tables and indexes using
436 >    regular expressions. See.
437 >    https://firebirdsql.org/file/documentation/release_notes/html/en/2_5/rnfb25-apiods-api.html#rnfb25-apiods-api-onlinevalidation
438 >
439 > 36. IBServices: procedure TIBConfigService.SetNoLinger added to set no linger
440 >    option on a database.
441 >
442 > 37. TIBCustomService: Assign method implemented to allow copying of service login
443 >    context between service API components. "Detach" method now only detaches
444 >    service when last reference to the service interface detaches. Tidy up of
445 >    code for SetActive and Attach methods including password hiding.
446 >
447 > 38. TIBDatabase: new properties: AuthenticationMethod and RemoteProtocol. Read only
448 >    and used to determine the auth method and protocol used for the connection.
449 >
450 > 39. TIBDatabase: ensure that SQLDialect setting is used when creating a database using
451 >    a Create Database Statement generated by IBX.
452 >
453 > 40. All IBServices now have an additional published property "PortNo". This may
454 >    be set to a non-standard port number when necessary. If zero then the default
455 >    port number is used.
456 >
457 > 41: TIBLookupComboeditBox: Ensure dataset updated when change selected with the keyboard
458 >    and not just the mouse.
459 >
460 > 42. TIBCustomDataset: reopen query if already active when a TIBControlLink is added.
461 >
462 > 43. TIBTreeview: new ImageIndexField and SelectedIndexField Property allows the
463 >    image index and selected image index for each node to be set from a database field.
464 >
465 > 44. TIBExtract: new extract type (etGrantsToUser) for use with eoDatabase. If included
466 >    then database schema includes grants to all users. If not present then the
467 >    only user grants included are those to User PUBLIC.
468 >
469 > 45. TIBTreeView: performance improvement. When expanding include both expanded node
470 >    and child nodes in dataset.
471 >
472 >
473 > IBX Change Log  version                            (2.1-0) Fri, 15 Dec 2017 12:20:11 +0000
474 >
475 > 1. IBCustomDataset: Minor change of PChar to PByte for compatibility with fbintf
476 >   changes.
477 >
478 > 2. IBCustomDataset: Fixed use of incorrect datasize in TIBStringField.SetAsString.
479 >   Bug could result in truncated multi-byte character set values.
480 >
481 > 3. Changes consequential on moving fbintf character set utility functions from
482 >   IFirebirdAPI to IAttachment.
483 >
484 > 4. Avoid "Object is nil" error when opening a database with DefaultSystemCodePage = true
485 >
486 > 5. IBLookupComboEditBox: avoid race condition when autocompleting text that occasionally
487 >   results in autocomplete ignoring prefix text.
488 >
489 > 6. IBLookupComboEditBox: Ensure that cursor is not reset to start of text when
490 >   entering a new name into the text box.
491 >
492 > 7. IBCustomDataset: ensure that TIBStringField uses the field size reported by
493 >   Firebird rather than recomputing it.
494 >
495 > 8. Property Editor positioning tidy up: All IBX Property editors should now be
496 >   screen centre. Previously some were "poDesigned" which may be inappropriate
497 >   for multi monitor desktops.
498 >
499 > 10. TIBTreeView.FindNode: protect against error if zero length path or empty tree node.
500 >
501 > 11. TIBTransaction: On Force Disconnect do not raise an exception when problem ending
502 >    a transaction and always reset the object.
503 >
504 > 12. TIBQuery tidyup: remove unnecessary call to GetAffectedRows.
505 >
506 > 13. TIBXScript: Allow for override of database filename in Create Database statements.
507 >
508 > 14. IBLocaldb: Support initialisation of the database from an SQL script in addition
509 >    to a gbak format archive.
510 >
511 > 15. IBLocaldb: fix problem that stopped the OnSharedDataDir event from being recognised.
512 >
513 > 16. IBLocaldb: Drop database if error creating an empty database.
514 >
515 > 17. TIBTreeView: improve performance when selecting node - avoid refreshing dataset
516 >    unless selected node not in current dataset.
517 >
518 > 18. IBServices: SetDBParams method moved from TCustomIBLocalDBSupport (in IBLocalDB package)
519 >    to TIBCustomService, and IBlocalDB code tidy up.
520 >
521 > 19. IBTreeView: Initialise TIBTreeNode KeyValue to null to avoid unpredictable
522 >    behaviour due to uninitialised variable.
523 >
524 > 20. IBServices: Correct encoding of isc_spb_prp_write_mode in TIBConfigService from
525 >    integer to byte. Ditto isc_spb_prp_reserve_space and isc_spb_prp_access_mode.
526 >
527 > 21. IBSQL: When Database changed ensure that all resources are freed.
528 >
529 > 22. IBCustomDataset: When database changed ensure that queries an unprepared.
530 >
531 > 23. SQL Property Editors now use SynEdit with SQL Highlighter. New features include:
532 >    * Line Wrap on SQL Token boundaries (on user command)
533 >    * auto-complete table names in drop down list of table names
534 >    * Double click on tablename or field name adds to SQL text
535 >
536 > 24. IBDataOutput: print statistics using float (%f) format instead of decimal (%d).
537 >
538 > 25. IBTreeView: Call to FindNode: param type change from "array of Variant" to
539 >    TVariantArray. Seems to avoid memory corruption in Windows (probably a
540 >    workaround for a problem in fpc 3.0.4 win64).
541 >
542 > 26. IBDatabaseInfo: Code tidy up. Add check for database not assigned or not open.
543 >
544 > 27. IBDatabaseInfo: Remove memory leak when accessing database operation counts.
545 >
546 > IBX Change Log  version                   (2.0-2) Fri, 24 Feb 2017 12:17:53 +0000
547 >
548 > 1. TIBDatabase.CreateDatabase: extract full DB Name from SQL using reg ex in order to
549 >   include remote system name.
550 >
551 > 2. TIBExtract: No longer include comment header and COMMIT statement for empty
552 >   tables when data included in output.
553 >
554 > 3. Profiling: IBSQL now has conditional compilation flags to enable query performance
555 >   and timing information to be written to stdout. This may be used to locate
556 >   performance bottlenecks.
557 >
558 > 4. SQLParser: only call "OnChanging" event handler when value is different.
559 >
560 > 5. IBDynamicGrid: Update handling of navigation keys for a TDateEdit
561 >
562 > 6. IBCustomDataset: Set internalunprepared flag when transaction ends. This ensures
563 >   that BindFields is called when the query is next activated. Avoids FieldName
564 >   not found error.
565 >
566 > 7. IBUpdate: This is a new IBX component similar to TIBUpdateSQL. It is more general
567 >   purpose and allows the programmer to define any action they want for Update, Insert
568 >   or Delete. This may be complex SQL (similar to a Trigger), application specific
569 >   filtering of updates, or use of statements such as Grant or Revoke instead of
570 >   normal DML. See User Manual for more information.
571 >
572 > IBX Change Log  version                  (2.0-1) Mon, 09 Jan 2017 15:31:49 +0000
573 >
574 > 1. TIBEvents: Fix uninitialised variable that could result in lost events.
575 >
576 > 2. TIBExtract: Added support for FB3 "USAGE" privilege.
577 >
578 > 3. TIBExtract: data formatted as Charset set "octets" is now output using
579 >   hexadecimal notation.
580 >
581 > 4. TIBExtract: Binary Blobs and array data can now be embedded in INSERT statements
582 >   using a simple XML format.
583 >
584 > 5. TIBExtract: extract of individual Triggers and Stored Procedures can now include
585 >   grants to these objects.
586 >
587 > 6. TIBExtract: Stored Procedures and Views output in dependency order to avoid
588 >   dependency problems restoring complex databases.
589 >
590 > 7. TIBXScript: This component has been restructured to allow for the processing of
591 >   embedded XML in INSERT statements and to support interactive sources in addition
592 >   to non-interactive data sources such as files.
593 >
594 > 8. TIBXScript: CREATE DATABASE, DROP DATABASE, CONNECT statements are now supported.
595 >
596 > 9. TIBXScript: ISQL compatiable Set statements are now supported:
597 >   SET SQL DIALECT
598 >   SET TERM
599 >   SET AUTODDL
600 >   SET BAIL
601 >   SET ECHO
602 >   SET COUNT
603 >   SET STATS
604 >   SET NAMES <character set>
605 >
606 > 10. IBVersion unit added to hold current IBX Version Number information.
607 >
608 > 11. TIBExtract: Use character rather than byte length for VarChar procedure arguments.,
609 >    and domain definitions.
610 >
611 > 12. TIBExtract: Triggers now use SQL2003 syntax and database and transaction triggers
612 >    fully supported.
613 >
614 > 13. TIBExtract: when a database dump includes data, the generator values are now also set.
615 >
616 > 14: IBSQLEdit: Unit LCLPlatformDef added to uses clauses for lazarus 1.7 and later.
617 >
618 > IBX Change Log  version     (2.0-0) Tue, 06 Dec 2016 10:33:44 +0000
619 >
620 > See also doc/IBX4LazarusGuide.pdf for important information on
621 > upgrading to IBX2.
622 >
623 > 1. Size property of TIBStringField is now the width in characters of the field
624 >   and not the byte length. This applies only to multi-byte character sets such
625 >   as UTF8. The original approach aligned with TStringField. However, the TStringField
626 >   code is not recognised as a bug and hence this change to align the behaviour.
627 >   The TStringField change is expected in fpc 3.2.0.
628 >
629 > 2. A new property AutoFieldSize: boolean has been added to TIBStringField. When
630 >   true (default) then Size property value saved in the lfm is ignored. Size is
631 >   always set from the dynamic information read from the database. It is unclear
632 >   why anyone would want to override this and set Size to false.
633 >
634 > 3. ibxscript: should now handle correctly a Case..End statement within a procedure
635 >   block.
636 >
637 > 4. IBDatabase: new property - CreateIfNotExists. If true and database does not
638 >   exist when an attempt is made to connect to it (run time only) then an attempt
639 >   is made to create the database.
640 >
641 > 5. IBDatabase: new event - OnCreateDatabase. This event is called after a database
642 >   has been successfully created as a result of a call to CreateDatabase or when
643 >   creating a database after it was found not to exist.
644 >
645 > 6.  DBControlGrid: a race condition could result in the wrong row image being
646 >    written to the cache. This has been avoided by a trip round the message
647 >    loop before rendering the row image.
648 >
649 > 7.  DBControlGrid: It is strongly recommended not to open the source DataSet for
650 >    a DBControlGrid during a Form's "OnShow" event handler. Under GTK2 this is
651 >    known to risk corrupt rendering of row images when the control is first
652 >    displayed. If necessary use "Application.QueueAsyncCall" to delay opening
653 >    of the dataset (see DBControlGrid examples) until the Form's Window has been created.
654 >
655 > 8.  DBControlGrid & IBDynamicGrid: Navigation keys should now work correctly with
656 >    a TDateEdit control located on an editor panel.
657 >
658 > 9.  TIBExtract: brought up-to-date plus many bug fixes.
659 >
660 > 10. DBControlGrid: Removed memory leak when updating rows.
661 >
662 > 11. TIBCMLocalDBSupport: fixed invalid free on upgrade.
663 >
664 > IBX Change Log  version                                           (1.4-3) Thu, 22 Sep 2016 18:10:15 +0100
665 >
666 > 1. IBCustomDataset: When calling SetCodePage, no longer request transliteration
667 >   when target codepage is CP_NONE. This is a workaround for
668 >   http://bugs.freepascal.org/view.php?id=30622.
669 >
670 > 2. DBLog option removed from TIBStatisticalService - not supported by server
671 >   since Firebird 1.5.
672 >
673 > 3. ibxscript: An error is no longer generated for "on commit preserve rows" or
674 >   similar.
675 >
676 > 4. IBCodePage: updated mapping between codepages and character id.
677 >
678 > 5. ftWideString and ftWideMemo withdrawn. There is no UTF16 character set in
679 >   Firebird. Character sets with a char width of two are not UTF16.
680 >
681 > 6. Strings received from the database are now always transliterated into UTF8
682 >   regardless of the database character set or connection character set. This
683 >   is for compatibility with the LCL.
684 >
685 > IBX Change Log  version  (1.4-2) Thu, 22 Sep 2016 15:25:27 +0100
686 >
687 > 1. IBBlob: Defer reading of blob until read method called. This avoids having to
688 >   read in an entire blob just to get the size of the blob. General performance
689 >   improvement when opening datasets containing blobs.
690 >
691 > 2. Clearing a  Blob now sets the corresponding field's modified flag.
692 >
693 > 3. IBLookupCombo: When not performing auto-complete, original query sort order
694 >   is now used.
695 >
696 > 4. IBDynamicGrid: Add OnSelectEditor event. Allows editor panel to be dynamically
697 >   determined.
698 >
699 > 5. IBDynamicGrid: Recompute column widths after dataset closed and re-opened.
700 >
701 > 6. IBLookupCombo: LazUTF8 added to uses clause to avoid compilation problems post
702 >   lazarus 1.6.0
703 >
704 > 7. IBControls. Removed "runtime" from list of paths to avoid "multiple packages"
705 >   compilation error.
706 >
707 > IBX Change Log  version                                 (1.4-1) Tue, 17 May 2016 09:14:51 +0100
708 >
709 > 1. No character set specified for connection: when a text blob is retrieved, the
710 >  character set is determined by looking up the native character set using then
711 >  Firebird API. Otherwise a text mode blob is assumed to have the same character
712 >  set as the connection.
713 >
714 > 2. TIBGUIInterface: this is an internal interface. Minor type changes to allow
715 >   for Login Dialog returing a change to the database path.
716 >
717 > 3. Design Time Database and Server login Dialogs now allow the Database Name/Server Name
718 >   to be changed from that given in the TIBDatabase/TIBServer component and for the
719 >   entered value to be saved on a project specific basis (design time only).
720 >
721 > 4. IBDynamicGrid: TDBLookupCellEditor now compares its DataFieldName with the
722 >   column fieldname. If they are the same then it is acts as a look up for the KeyValue
723 >   Otherwise, it sets the column text to the selected ListField Value.
724 >
725 > 5. IBDynamicGrid: Only visible columns are now taken into account When recalculating
726 >   column width.
727 >
728 > 6. IBLookupComboEditBox: Fix error with autocomplete query when a RelationName is given
729 >   and a case insensitive search is requested.
730 >
731 > 7. IBDynamicGrid: No longer ignores notifications removing Column Totals controls
732 >   or column ListSource.
733 >
734 > 8. IBQuery: no longer performs unnecessary refresh of SQL Text (and hence avoids an
735 >   unprepare) when closing and the text has not changed.
736 >
737 > 9. IBSQL: Base the cursor name on a GUID instead of a hexstr version of the class pointer.
738 >   Less likely to cause a cursor re-use error on Windows.
739 >
740 > 10.SV5IPC: include workaround for OSX. FPC 3.0.0 has broken ipc module for darwin.
741 >   Expected to be fixed in 3.0.2. Hence workaround only applies to 3.0.0.
742 >
743 > 11. TIBTreeView: Guard against nil destination on record changed
744 >
745 > 12. AnsiString Code page support: TIBStringField.AsString and TIBMemoField.AsString now return a
746 >    string type with the code page set to reflect the returned field encoding after
747 >    Firebird driver transliteration, if any.  FPC 3.0.0 onwards only. Behaviour unchanged for
748 >    earlier versions.
749 >
750 > 13. AnsiString Code page support: Assigning to TIBStringField.AsString and TIBMemoField.AsString
751 >    will now result in transliteration to the code page specified for the Firebird driver
752 >    if the assigned string has a different code page. FPC 3.0.0 onwards only.
753 >
754 > 14. TIBDatabase: new property UseDefaultSystemCodePage. When set any lc_ctype parameter
755 >    is ignored and the lc_ctype value, when the database is opened, is set to align with
756 >    the DefaultSystemCodePage (FPC 3.0.0 onwards). Normally, this is what you want and should ensure
757 >    platform independence. Note: this applies to FPC 3.0.0 and earlier versions. Pre FPC
758 >    3.0.0, when this property is true, the lc_ctype is UTF8 except under windows when
759 >    the GETACP is used to determine the Windows code page.
760 >
761 > 15. TIBDatabase: new property DefaultCharSetName. This is the Firebird character set
762 >    name used as the lc_ctype when the database was opened. Only valid while the
763 >    Database is connected.
764 >
765 > 16. TIBDatabase: new property DefaultCodePage (FPC >=3.0.0 only). This is the codepage
766 >    id that corresponds to the DefaultCharSetName.
767 >
768 > IBX Change Log  version                          (1.4-0) Mon, 15 Feb 2016 14:44:24 +0000
769 >
770 > 1. Unix: If Firebird Embedded Server shared object is loaded and a local database
771 >   path is given and database attach fails due to access permission issues on the
772 >   temp directory or security database, then the attach is retried with "localhost:"
773 >   prefixing the databasename. This should avoid problems when the database has to
774 >   be accessed by a local (e.g. classic) server and libfbembed is used.
775 >
776 > 2. Windows: revised search order for Firebird DLL:
777 >     i.   The Firebird Embedded Server in the application Directory.
778 >     ii.  If the FIREBIRD environment variable is set then the directory this
779 >          points to is searched for the FB Client DLL and then then underlying
780 >          "bin" directory.
781 >     iii. Registry Key HKEY_LOCAL_MACHINE\SOFTWARE\Firebird Project\Firebird Server\Instances
782 >          is used to locate the Firebird installation directory and the underlying
783 >          "bin" directory is searched for the FB Client DLL.
784 >     iv.  The Default installation directories C:\Program Files\Firebird\Firebird_2_x
785 >          are searched for the FB Client DLL.
786 >     v.   The PATH Environment variable is used to search for the FB Client DLL.
787 >     vi.  Finally the  PATH Environment variable is used to search for IBASE.DLL.
788 >
789 > 3. New Component: TIBXScript. This is an ISQL compatible SQL script execution engine.
790 >   See doc/readme.scriptengine and example applications.
791 >
792 > 4. New Component: TIBlocalDBSupport. This is a TIBDatabase support component intended to
793 >   simplify the use of the embedded firebird server on both Linux and Windows platforms.
794 >   See dpc/readme.localdatabase and example applications.
795 >
796 > 5. IBDynamicGrid: Reordering on column header click should now also work for
797 >   dynamic columns.
798 >
799 > 6. ISQLMonitor: (Windows only). Mutex added to TMultilockGate to avoid race condition
800 >   between incrementing/decrementing the lock count and signalling the event.
801 >
802 > IBX Change Log  version           (1.3-2) Tue, 26 Jan 2016 14:39:54 +0000
803 >
804 > 1.3.2 was never formally released and only made available as beta copies.
805 >
806 > 1. DBControlGrid,IBDynamicGrid: Ignore down arrow and up arrow in TCustomMemo
807 >
808 > 2. IBDynamicGrid: Now deals correctly with a single column grid which has no indicator and autosize column
809 >
810 > 3. IBLookupComboEditBox: reset timer on each key press - avoids timer going off too early
811 >
812 > 4. IBDynamicGrid: Call event OnUpdateSortOrder even when aliasname not found in dataset
813 >   i.e. when it is a calculated field
814 >
815 > 5. IBDynamicGrid: Fix problem selecting a different row when expanded row at end of grid.
816 >   This problem was due to a race condition between recalculating row heights and
817 >   determining which row was selected by the mouse click. The row height calculation
818 >   is now deferred by an extra trip round the message loop allowing the row to
819 >   be always calculated on the current grid layout rather than risking it being
820 >   calculated on the grid layout after the expanded row has been shrunk.
821 >
822 > 6. IBLookupComboEditBox: avoid race condition between cm_killfocus and cm_exit on
823 >   Windows.
824 >
825 > 7. TIBStringField: Now has two new public properties: CharacterSetName: string and CharacterSetSize: integer;
826 >   These properties allow the (Firebird) character set name for the field and the max number of bytes per character
827 >   to be determined at runtime. See doc/readme.charactersets.html.
828 >
829 > 8. TIBWideStringField: This is a new field type with the same additional public properties as above and subclassed from
830 >   TWideStringField. This field type is used with the character size reported by Firebird is two. See doc/readme.charactersets.html.
831 >
832 > 9. TIBMemoField and TIBWideMemoField: new field types with the same additional public properties as above and subclassed from
833 >   TMemoField and TWideMemoField respectively. These field types are used with Blob subtype 1 and a characterset size of
834 >   1, 3 or 4 (TIBMemoField) or 2 (TIBWideMemoField). See doc/readme.charactersets.html.
835 >
836 >   Both also have a new published property "DisplayTextAsClassName". If false (default) the displaytext is generated
837 >   from the blob text by truncating the string to the displaywidth (in characters not bytes). A displaywidth of zero
838 >   implies no truncation.
839 >
840 > 10. IBLookupComboEditBox: Force autocomplete when EditingDone called and timer active.
841 >
842 > 11. IBDynamicGrid: Call DataSet.Append when entering edit mode and dataset empty and not in insert state
843 >   (avoids "Not in Edit Mode" error).
844 >
845 > 12. IBDynamicGrid: Correctly resize grid when one column width plus indicator.
846 >
847 > 13. IBDynamicGrid: Ensure Editor Panel has focus when shown - avoids Windows API calling
848 >    DBGrid.DoExit on subsequent mouse click (e.g. on child control such as a tabbed page control.
849 >
850 > 14. IBDynamicGrid: ignore up, down tab and return when editorpanel open and focus in a TCustomGrid descendent.
851 >
852 > 15. DBControlGrid: Stop flashing grid when dataset closed and then re-opened while DisabledControls
853 >
854 > 16. IBQuery: Bug fixed that prevented SQL being set programmatically once the Parser had been invoked.
855 >
856 > 17. IBCustomDataSet: On close, parser is now freed and Select SQL reverts to value before DataSet Opened.
857 >
858 > IBX Change Log  version        (1.3-1) Sat, 18 Jul 2015 13:30:50 +0100
859 >
860 > 1.   OnCloseUp Event Handler added to TDBLookupProperties
861 >
862 > 2.   IBDynamicGrid: Call to OnEditorPanelHide is now last editor hide action - avoids
863 >     problem with row size when exception is called.
864 >
865 > 3.   IBLookupComboEditBox: Force pending autocomplete on combobox exit.
866 >
867 > 4.   IBDynamicGrid and DBControlGrid: Keyhandler now ignores up, down, escape and return keys if
868 >     in a TCustomComboBox and ignores return key if in a TCustomMemo
869 >
870 > 5.   IBLookupComboEditBox: Ensure that KeyValue is set correctly when full text
871 >     keyed in i.e. when autocomplete not performed
872 >
873 > 6.   Cleanup of "Uses" clauses and add console mode support. IBX should now support
874 >     console mode applications with all LCL required functions (builtin dialogs and
875 >     cursor management) centralised in the  IBDialogs unit. As long as "IBDialogs" is
876 >     not included in your project, IBX should compile and link with a console mode program.
877 >     See consolemode example and its "readme"for further guidence. DO NOT add the ibexpress package to a
878 >     console mode application or the IDE will automatically assume that your
879 >     application is GUI based. Instead, you should include the ibexpressconsolemode package.
880 >
881 >     IMPORTANT NOTE: IBDialogs must be included in GUI applications in order
882 >     to use the built in dialogs and cursor management. IBDialogs is
883 >     included by default if "ibexpress" is in your project source's "uses" clause.
884 >     This should be the case for all projects created through the IDE. This is why
885 >     you do not want to add the ibexpress package to console mode applications. The
886 >     ibexpressconsolemode package has been created to allow console mode programs
887 >     to avoid adding LCL dependencies when using IBX, while still having the
888 >     unit search paths set up correctly.
889 >
890 >     Existing users should check to ensure that the "ibexpress" unit is included in
891 >     each project's source file (*.lpr).
892 >
893 >     You may find that in order for the IDE to recognise that ibexpressconsolemode
894 >     exists, you have to first open the package in the IDE and then close it. This
895 >     adds it to the most recently accessed packages list. To make it permanently
896 >     available, add the package name to lazarus' staticpackages.inc file.
897 >
898 >         Thanks to Julio Jiménez for suggesting support of console mode.
899 >
900 > 7.   SQL Parser can now accept quoted strings that include new lines
901 >
902 > 8.   IBDynamicGrid: Lookup Cell Editor - the cursor is now positioned at end
903 >     of text on start of edit. This is particularly useful when tabbing to a
904 >     column and then inserting text.
905 >
906 > 9.   New Examples provided for IB Services and ISQLMonitor.
907 >
908 > 10. Fix error when writing to blob streams that recorded only the last buffer
909 >    write in the blob stream. In most cases, this did not cause a problem as the
910 >    IB Blob Stream is written in a single write. However, with the TDBImage, write
911 >    of a graphic type prefix was lost which caused a problem when the image could
912 >        not be automatically recognised.
913 >
914 > 11. Improve generation of random cursor names in TIBSQL - avoid risk of "cursor
915 >    already open" errors due to random numbers used for the cursor name being identical.
916 >
917 > 12. IBTable: corrected error that could result in an "Index out of bounds" error
918 >    when opening the table and the Primary Key is the last or only column in the
919 >    table. Thanks to Rick Hoover for the fix.
920 >
921 > 13. Fix TIBDatabase initialisation of lc_ctype under unix. Set to "UTF8" instead
922 >    of "UTF-8", and update list of available database character sets. Existing
923 >    users should check the current lc_ctype setting in their applications.
924 >
925 > IBX Change Log  version  (1.2-4) Sat, 09 May 2015 12:38:29 +0100
926 >
927 > 1.  Firebird Services: avoid List Index error when opening a service with an
928 >    empty Params property.
929 >
930 > 2.  IBControls: Fix problem with new link mechanism introduced in 1.2.3.
931 >    Link now set up in Loaded method - avoids occasional failure to apply
932 >    SQL markup on initial open.
933 >
934 > 3.  "Employees" example performance improvements when scrolling.
935 >
936 > 4.  DBControlGrid: Correctly handle edit panel removal when panel is child control of a
937 >    TFrame. Force recaching of selected frame to avoid GTK race (results in a
938 >    random image cached).
939 >
940 > 5.  DBControlGrid: Should now react to changes in panel height at run time.
941 >
942 > 6.  IBDynamicGrid: Redraws rows below on panel editor hide - avoids blank space at end of grid  
943 >    even when further rows exist.
944 >
945 > 7.  DBControlGrid: DefaultRowHeight is no longer a published property as it should
946 >    always be derived from panel height and setting this property can cause confusion.
947 >    Note for existing projects: to avoid a missing property error at run time,
948 >    each form using the DBControlGrid must be opened, updated and saved in the IDE
949 >    in order to remove the property value from the lfm.
950 >
951 >
952 > IBX Change Log  version (1.2-3) Tue, 14 Apr 2015 14:11:17 +0100
953 >
954 > 1.  TIBStoredProc. Prepare now called by ParamByName to avoid need to always
955 >    call Prepare before setting parameter values.
956 >
957 > 2.  Error message on ParamByName (all cases) not found now includes name of missing parameter.
958 >
959 > 3.  Code tidyup and more robust handling of dsql information result vector.
960 >
961 > 4.  Support for centralised handling of transaction status changes. TIBTransaction
962 >    has been given additional events "AfterEdit", "AfterInsert", "AfterDelete", "AfterPost"
963 >    and "AfterExecQuery". The first three are called after the same event is called
964 >    for an IBCustomDataSet descendent using the Transaction. The fourth is called
965 >    after a call to TIBSQL.ExecQuery, again using this transaction. These new events
966 >    enable monitoring of transaction status changes for a given transaction to be
967 >    handled in a single place. For example, when a change to the dataset occurs
968 >    an indicator can be set that shows the user that in order to save changes,
969 >    the transaction should be committed.  Rather than doing this per dataset, this
970 >    can now be done per transaction.
971 >
972 > 5.  TDataSet.CheckBrowseMode automatically posts changes to the current row when
973 >    the dataset is scrolled. However, any changes to the current row are, by default,
974 >    discarded when the dataset is closed. TIBDataSet, TIBQuery and TIBTable now
975 >    have a new property "DataSetCloseAction" that adds automatic posting of changes
976 >    on dataset close. If this property is set to dcDiscardChanges (default) then the
977 >    behaviour is unchanged from previous versions. if the value is set to dcSaveChanges
978 >    then IBX will attempt to post any unsaved changes before the dataset is closed
979 >    (and after the BeforeClose event handler is called). The exception is when the
980 >    dataset is being closed as a result of a transaction rollback. In this case,
981 >    no action is taken and any unsaved  changes are discarded. This avoids both
982 >    unnecessary overhead and the risk that a validation error may occur in the Post
983 >    raising an exception and thereby preventing a rollback.
984 >
985 > 6.  String Field sizes and Display Widths should now be correct for multi-byte character sets.
986 >    In earlier versions, the Display Width was set to the maximum byte width rather than the character
987 >    width. Display Widths are now corrected by dividing by the max byte width per character.
988 >    For UTF8 character sets, the byte width is four and hence the Display Width will be
989 >    the byte width divided by 4. The byte width of each character set is determined
990 >    dynamically when the database connection is estabished from the RDB$CHARACTER_SETS
991 >    system table. (see also http://bugs.freepascal.org/view.php?id=27766).
992 >
993 > 7.  SQLParser will now correctly parse SQL Text which contains ':' within quoted string.
994 >
995 > 8.  IBLookupComboEditBox: List should now always be restored to full list when the
996 >    control loses focus. Default Key press default interval reduced to 200ms.
997 >
998 > 9.  DBControlGrid: Ensure that selection is changed to newly appended row, even
999 >    when dataset rows are less than visible rows.
1000 >
1001 > 10. IBDynamicGrid: Editor Panel is not shown on indicator click if Datasource
1002 >    does not exist or DataSet is empty. More responsive on dataset open. New event
1003 >    OnRestorePosition. Column sort disabled if no header row.
1004 >
1005 > 11. IBTreeView: improved handling of response to "Add Node". Avoid scrolling dataset
1006 >    while dataset state is dsInsert. Avoids posting errors.
1007 >
1008 > 12. IBControls: New mechanism for distributing UpdateSQL and UpdateParams events. This is to
1009 >    avoid conflict with DisableControls/EnableControls with Master/Detail linked tables.
1010 >
1011 > 13. IBLookupComboEditBox: Now avoids SQL Errors when combo box text contains single quotes.
1012 >
1013 > 14. TIBDataSet and TIBQuery: new Event - OnValidatePost. This event has been introduced
1014 >    to solve a specific problem. That is when the dataset cursor is moved (e.g. by
1015 >    a grid mouse click and the current row is being edited or inserted. In this case, TDataset
1016 >    always "posts" the current record regardless or whether or not it may be more appropriate
1017 >    to cancel any changes; the post occurs before the "BeforeScroll" event fires due to the way the
1018 >    "MoveBy" function is implemented by TDataSet. The OnValidatePost event is called
1019 >    as the first action of the "Post" method and allows the handler to convert the Post
1020 >    into a Cancel if that is the appropriate action on moving to a different row. This is
1021 >    achieved by returning with "CancelPost" argument set to true. Note that an exception could be
1022 >    raised here, but it may still be more appropriate to validate a post and signal
1023 >    a problem in the "BeforePost" event handler. See readme.automaticposts.xhtml)
1024 >
1025 > 15. On Unix derived systems, the Firebird library name can now be given as a colon
1026 >    separated list. Each library name on the list is tried in turn, in left to right
1027 >    order with the first found being used as the firebird library. By default, on Linux,
1028 >    the library name list is 'libfbembed.so.2.5:libfbembed.so.2.1:libfbclient.so.2'. This can be
1029 >    overidden by the FBLIB environment variable or the OnGetLibraryName function.
1030 >
1031 >    Note: when using the libfbembed.so, if you prefix the database name with "localhost:"
1032 >    then it will still attempt to access the database via the Firebird Server and will
1033 >    require a username and password. If only the pathname is given, then the username
1034 >    and password should be omitted and the unix file permissions are used to grant
1035 >    access.
1036 >
1037 > IBX Change Log  version  (1.2-2) Sat, 14 Mar 2015 11:35:04 +0000
1038 >
1039 > 1.  A new IBControl - TDBControlGrid has been added. TDBControlGrid a lookalike
1040 >    rather than a clone for the Delphi TDBCrtlGrid. TDBControlGrid is a single column grid
1041 >    that replicates a TWinControl - typically a TPanel or a TFrame in each row. Each row
1042 >    corresponds to a row of the linked DataSource. Any data aware control on the
1043 >    replicated (e.g.) TPanel will then appear to have the appropriate value for the row.
1044 >
1045 > 2. As suggested by Julio Jiménez, a new property "SQLHourGlass" has been added to TIBDatabase.
1046 >   When set to false (default true), the Hour Glass cursor is supcpressed and no cursor change
1047 >   takes place during database access. This may be useful when there are performance issues with
1048 >   the change of cursor. Setting the property to false suppresses the change of cursor.
1049 >
1050 > 3. As suggested by Julio Jiménez, a new property "AutoCommit" has been added to TIBDataSet, TIBQuery
1051 >   and TIBTable. When set to acCommitRetaining (Default: acDisabled), a call is made to
1052 >   Transaction.CommitRetaining immediately after every Post or Delete. This has the effect of
1053 >   making all changes permanent immediately rather than when the transaction is explicitly
1054 >   committed.
1055 >
1056 > 4. Experimental support for the Firebird 3 SQL_BOOLEAN type has been added while still
1057 >   using the legacy Firebird API. Thanks to Gabor Boros for helping to test this feature.
1058 >
1059 > IBX Change Log  version      (1.2-1) Fri, 13 Mar 2015 11:14:15 +0000
1060 >
1061 > Development version only.
1062 >
1063 > IBX Change Log  version   (1.2-0) Thu, 26 Feb 2015 10:34:04 +0000
1064 >
1065 > 1. An internal select SQL Parser is now available for TIBCustomDataset descendents.
1066 >   This is typically used during an "OnBeforeOpen" event handler to manipulate the
1067 >   "Where" and "Having" clauses to implement user specified filters of arbitrary
1068 >   complexity.
1069 >
1070 > 2. A new Component Palette entry "Firebird Data Controls" is now available. This has
1071 >   three new data aware controls dependent on IBX and which make use of the SQL Parser.
1072 >   These are:
1073 >
1074 >   - TIBLookupComboEditBox
1075 >   - TIBDynamicGrid
1076 >   - TIBTreeview
1077 >
1078 >   TIBLookupComboEditBox is a TDBLookupComboBox descendent that implements "autocomplete"
1079 >   of typed in text and "autoinsert" of new entries. Autocomplete uses SQL manipulation
1080 >   to revise the available list and restrict it to items that are prefixed by the
1081 >   typed text (either case sensitive or case insensitive). Autoinsert allows a
1082 >   newly typed entry to be added to the list dataset and included in the available
1083 >   list items.
1084 >
1085 >   TIBDynamicGrid is a TDBGrid descendent that provides for:
1086 >   - automatic resizing of selected columns to fill the available row length
1087 >   - automatic positioning and sizing of a "totals" control, typically at the
1088 >     column footer, on a per column basis.
1089 >   - DataSet resorting on header row click, sorting the dataset by the selected column.
1090 >     A second click on the same header cell reversed the sort order.
1091 >   - Support for a "Panel Editor". That is on clicking the indicator column, the row
1092 >     is automatically expanded and a panel superimposed on it. The panel can have any
1093 >     number of child controls, typically data aware controls with the same datasource
1094 >     as the grid allowing for editing of additional fields and more complex editors.
1095 >   - Reselection of the same row following resorting.
1096 >   - A new cell editor that provides the same functionality as TIBLookupComboEditBox.
1097 >     Its properties are specified on a per column basis and allows for one or more
1098 >     columns to have their values selected from a list provided by a dataset.
1099 >     Autocomplete and autoinsert are also available. The existing picklist editor
1100 >     is unaffected by the extension.
1101 >
1102 >   TIBTreeView is a data aware TCustomTreeView.
1103 >
1104 > 3. When getting a field value using FieldByName.AsVariant, an SQL_INT64 with a
1105 >   zero scale will no longer return an error. An Int64 will be returned instead.
1106 >
1107 > 4. TIBTransaction now has events for Before and After Transaction End and a new function
1108 >   "GetEndAction" allowing the EndAction to be accessed by these event handlers.
1109 >
1110 > 5. TIBQuery can now handle correctly queries which contain the same keyword parameter
1111 >   repeated multiple times.
1112 >
1113 > 6. TIBUpdateSQL will no longer return an error when "RowsAffected" is <> 1. This error
1114 >   check used to get in the way of using Stored Procedures, and "Update or Insert"
1115 >   statements.
1116 >
1117 > 7. Insert, Modify and Delete property Editors now support Query Generation from
1118 >   Stored Procedures.
1119 >
1120 > 8. Three new examples illustrate the use of the new IB Controls
1121 >
1122 >
1123 > IBX Change Log  version  (1.1-0) Mon, 07 Jul 2014 14:01:07 +0100
1124 >
1125 > 1. TIBXSQLVAR code clean up and optimisation to improve client side "prepare" and parameter
1126 >   setting performance. See "readme.field+param.names in the doc folder.(Thanks to
1127 >   Gabor Boros for reporting this problem and for testing the improvements).
1128 >
1129 > 2. IBX can now support dialect 3 quoted column names that contain spaces and which differ only in their case.
1130 >   See readme.field+param.names in the doc folder.
1131 >
1132 > 3. IBX SQL Editors will now automatically add double quotes around column names when the database
1133 >   dialect is "3" and the column name contains spaces or is a Firebird 2.5 SQL Reserved Word.
1134 >
1135 > 4. Param Type LargeInt now supported in TIBQuery and TIBStoredProc
1136 >
1137 > 5. TIBSQL.ExecQuery retry on failure removed to avoid problems with "at most once"
1138 >   actions.
1139 >
1140 > 6. TIBTransaction.SetDefaultDatabase uses SetObjectProp instead of mis-using SetOrdProp (with
1141 >   thanks to Yuriy Kopnin for pointing this out).
1142 >
1143 > 7. GenerateParamName is now a published property of TIBSQL, TIBQuery and TIBDataSet.
1144 >
1145 > 8. varWord, varShortInt and varInt64 added to TIBXSQLVAR.SetAsVariant and hence now available as variant types
1146 >   for both fields and parameter setting.
1147 >
1148 > 9. Changes to the Select SQL in an IBCustomDataset descendent should now be
1149 >   visible in the Fields Editor immediately afterwards - rather than only after cycling the "active" property.
1150 >
1151 > 10. TIBSQL SQL editor will operate correctly and not report an SQL syntax error on SQL test,
1152 >    when DSQL ('?') parameter placeholders are used and the TIBSQL.GenerateParamNames property is set to true.
1153 >
1154 > 11. TIBTable now has a property editor for "MasterFields"
1155 >
1156 > 12. SQL Property Editors now include a checkbox "Allow DSQL Placeholder". This corresponds to the
1157 >    GenerateParamNames property and should be set when using DSQL (i.e. '?') style parameters.
1158 >
1159 > 13. The IBTransaction editor now has a radio button ("Unspecified") which is set when the combination
1160 >    of settings is unrecognised. Selecting this radio button has no effect on the settings.
1161 >  
1162 >
1163 > IBX Change Log  version                 (1.0-5) Sat, 28 Dec 2013 19:22:23 +0000
1164 >
1165 > 1. TBookmark change conditional compile changed to >= 2.7.0 to match revised availability of change.
1166 >
1167 > IBX Change Log  version          (1.0-4) Thu, 28 Feb 2013 16:56:13 +0000
1168 >
1169 > 1. In a TIBCustomDataset descendent, a generator now only sets the value when
1170 >   it is null. This allows for alternative user defined setting of the generator
1171 >
1172 >   Many thanks to Julio Jiménez for this fix
1173 >
1174 > 2. An Error Dialog is now displayed in the Lazarus IDE if IBX cannot find the Firebird Library
1175 >   and suggests that the user may have forgotten to install it.
1176 >
1177 > IBX Change Log  version         (1.0-3) Thu, 22 Nov 2012 22:53:39 +0000
1178 >
1179 > 1. Conditional compilation used to limit registration of TIntegerField to
1180 >   Lazarus versions less than 1.1
1181 >
1182 > 2. When a database connection is created, character set is now by default set
1183 >   to UTF8 (Unix) or to the current Windows code page (Windows) if in the range
1184 >   1250 to 1254.
1185 >
1186 >
1187 > IBX Change Log  version     (1.0-2) Tue, 09 Oct 2012 09:10:30 +0100
1188 >
1189 > 1. TBookmark change conditional compile changed to > 2.6.2 to match expected availability of change.
1190 >
1191 >
1192 > IBX Change Log  version    (1.0-1) Sun, 05 Aug 2012 20:00:04 +0100
1193  
1194   1. In IBCustomDataset. Changed CurBookmark from string to TBookmark for compiler versions > 2.6.0
1195     Necessary because of TBookmark type and TDataSet.Bookmark property change in fpc 2.7.1

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