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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                                              (2.2-0) Thu, 25 Jan 2018 13:56:39 +0000
2 >
3 > 1. IBExtract: Identity columns - add additional check for null column for generator name.
4 >
5 > 2. IBCustomDataSet: Insert and Modify (Update) queries now recognise and process SQL RETURNING clauses.
6 >   The main use for this is for Firebird 3 Identity columns (see IBXDocumentation 6.6.8 for further
7 >   information). However, this is also a very useful mechanism for returning updated computed by
8 >   column values. Values returned as a result of executing an Insert or Update statement
9 >   replace existing values in the current row for each corresponding column.
10 >
11 >   Previously, if a dataset's select query included read only (computed by) fields then
12 >   an automatic row refresh was performed after an insert or update query had been processed,
13 >   irrespective of the setting of the "ForcedUpdates" property. This has changed such
14 >   that an automatic refresh is no longer performed if an insert or update query contains
15 >   a returning clause that updates one or more fields on the current row. A full row
16 >   refresh is only performed if (a) ForcedRefresh is true or (b) the query does not return any
17 >   field values and the select query contains read only fields. Use of Insert/update
18 >   returning should be significantly more efficient than executing a refresh query.
19 >
20 >   This behaviour change is intended to be backwards compatible and there should be no need to change
21 >   existing programs, other than to improve performance by using the new capability.
22 >
23 > 3. IBCustomDataSet: DELETE...RETURNING queries are now also recognised. However, as
24 >   they are called when the dataset row is being deleted, there is no value in
25 >   updating the current record from the query result. Instead, a new event handler
26 >   "OnDeleteReturning" is provided. If a DELETE...RETURNING query is execute and
27 >   an OnDeleteReturning event handler is provided then it is called with the IResults returned
28 >   by the query. The event handler can then interrogate the query results and
29 >   perform whatever action is necessary. For example to confirm, to the user,
30 >   the deletion of a row with the returned values.
31 >
32 > 4. TIBTable: generated Insert and Update SQL now include a RETURNING clause for
33 >   any Computed By or Identity Columns. The IBTables example has been updated to
34 >   illustrate the computation of the employee Full Name on update.
35 >
36 > 5. TIBTable: The GeneratorField property is now published.
37 >
38 > 6. The InsertSQL property editor now shows Firebird 3 Identity columns separate from the Field List.
39 >   When InsertSQL is generated, the Identity columns are not included in the list of values to
40 >   be inserted. A RETURNING clause is added to the insert statement to return the value of
41 >   each Identity column after the insert is executed.
42 >
43 > 7. The Modify Property Editor now generates Update SQL with Computed By fields in Update..Returning clause.
44 >   Similarly Insert Property Editor now generates Insert SQL with Computed By fields in
45 >   Insert..Returning clause.
46 >
47 > 8. TIBGenerator: small performance improvement by not preparing query each time
48 >   a new value is generated.
49 >
50 > 9. TIBSQL: Free resources when transaction changed - ensures new transaction is used.
51 >
52 > 10. Property editors will now sync table name to a System Table when "Include System
53 >    Tables" is selected and the query is for a System Table.
54 >
55 > 11. Minor Performance improvement to handling of Date/Time types in IBX datasets. Field
56 >    values are no longer converted to milliseconds from TDateTime and then back again
57 >    to TDateTime (the conversion to milliseconds is the default TDataset approach).
58 >
59 > 12. Property Editors handling of Stored Procedures.
60 >    * Select and Refresh: only show a list of stored procedures that return multiple rows (proc type 1) and
61 >      which have a non-empty list of output parameters (i.e. stored procedures that may be used in a select
62 >      query).
63 >    * Modify and Insert: only show a list of stored procedures that return at most a singleton row (proc type 2).
64 >
65 > 13. IBStoredProc: Now supports Firebird 3 Package Names. A new published property PackageName
66 >    can be used to select a package. If non-empty, the stored procedure name is
67 >    expected to be a stored procedure defined in the specified package and the
68 >    generated SQL will be as required for a stored procedure located in a package.
69 >
70 > 14. Select, Refresh, Insert, Modify, Delete and TIBSQL SQL Property Editors now include
71 >    a "Package Name" drop down box to allow selection of a Firebird 3 Package from
72 >    which a stored procedure can be selected. With no package name selected, non-package
73 >    stored procedures are listed.
74 >
75 > 15. TIBXScript: turn off database login prompt when reconnecting - this avoids prompting
76 >    for password on reconnect.
77 >
78 > 16. IBDatabase: use IAttachment for connection default character set id, code page
79 >    and character set name.
80 >
81 > 17. TIBDatabaseInfo: cache ODS Version information on first request in order to minimise
82 >    DB info lookups"
83 >
84 > 18. IBExtract: now supports DDL Triggers.
85 >
86 > 19. Add a property Editor for TIBUpdate.RefreshSQL.
87 >
88 > 20. IBUpdate: Ignore non-data (e.g. calculated) fields when assembling list of input
89 >    parameters. This stops an exception being raised when the field cannot be
90 >    located in the record buffer.
91 >
92 > 21. Property Editors now automatically include System Tables when opened and when the query table
93 >    is a System Table.
94 >
95 > 22. FB3UserManager example added to illustrate use if IBX for managing user logins, passwords
96 >    and connections using IBX and with single or multiple security databases.
97 >
98 >
99 > IBX Change Log  version                            (2.1-0) Fri, 15 Dec 2017 12:20:11 +0000
100 >
101 > 1. IBCustomDataset: Minor change of PChar to PByte for compatibility with fbintf
102 >   changes.
103 >
104 > 2. IBCustomDataset: Fixed use of incorrect datasize in TIBStringField.SetAsString.
105 >   Bug could result in truncated multi-byte character set values.
106 >
107 > 3. Changes consequential on moving fbintf character set utility functions from
108 >   IFirebirdAPI to IAttachment.
109 >
110 > 4. Avoid "Object is nil" error when opening a database with DefaultSystemCodePage = true
111 >
112 > 5. IBLookupComboEditBox: avoid race condition when autocompleting text that occasionally
113 >   results in autocomplete ignoring prefix text.
114 >
115 > 6. IBLookupComboEditBox: Ensure that cursor is not reset to start of text when
116 >   entering a new name into the text box.
117 >
118 > 7. IBCustomDataset: ensure that TIBStringField uses the field size reported by
119 >   Firebird rather than recomputing it.
120 >
121 > 8. Property Editor positioning tidy up: All IBX Property editors should now be
122 >   screen centre. Previously some were "poDesigned" which may be inappropriate
123 >   for multi monitor desktops.
124 >
125 > 10. TIBTreeView.FindNode: protect against error if zero length path or empty tree node.
126 >
127 > 11. TIBTransaction: On Force Disconnect do not raise an exception when problem ending
128 >    a transaction and always reset the object.
129 >
130 > 12. TIBQuery tidyup: remove unnecessary call to GetAffectedRows.
131 >
132 > 13. TIBXScript: Allow for override of database filename in Create Database statements.
133 >
134 > 14. IBLocaldb: Support initialisation of the database from an SQL script in addition
135 >    to a gbak format archive.
136 >
137 > 15. IBLocaldb: fix problem that stopped the OnSharedDataDir event from being recognised.
138 >
139 > 16. IBLocaldb: Drop database if error creating an empty database.
140 >
141 > 17. TIBTreeView: improve performance when selecting node - avoid refreshing dataset
142 >    unless selected node not in current dataset.
143 >
144 > 18. IBServices: SetDBParams method moved from TCustomIBLocalDBSupport (in IBLocalDB package)
145 >    to TIBCustomService, and IBlocalDB code tidy up.
146 >
147 > 19. IBTreeView: Initialise TIBTreeNode KeyValue to null to avoid unpredictable
148 >    behaviour due to uninitialised variable.
149 >
150 > 20. IBServices: Correct encoding of isc_spb_prp_write_mode in TIBConfigService from
151 >    integer to byte. Ditto isc_spb_prp_reserve_space and isc_spb_prp_access_mode.
152 >
153 > 21. IBSQL: When Database changed ensure that all resources are freed.
154 >
155 > 22. IBCustomDataset: When database changed ensure that queries an unprepared.
156 >
157 > 23. SQL Property Editors now use SynEdit with SQL Highlighter. New features include:
158 >    * Line Wrap on SQL Token boundaries (on user command)
159 >    * auto-complete table names in drop down list of table names
160 >    * Double click on tablename or field name adds to SQL text
161 >
162 > 24. IBDataOutput: print statistics using float (%f) format instead of decimal (%d).
163 >
164 > 25. IBTreeView: Call to FindNode: param type change from "array of Variant" to
165 >    TVariantArray. Seems to avoid memory corruption in Windows (probably a
166 >    workaround for a problem in fpc 3.0.4 win64).
167 >
168 > 26. IBDatabaseInfo: Code tidy up. Add check for database not assigned or not open.
169 >
170 > 27. IBDatabaseInfo: Remove memory leak when accessing database operation counts.
171 >
172 > IBX Change Log  version                   (2.0-2) Fri, 24 Feb 2017 12:17:53 +0000
173 >
174 > 1. TIBDatabase.CreateDatabase: extract full DB Name from SQL using reg ex in order to
175 >   include remote system name.
176 >
177 > 2. TIBExtract: No longer include comment header and COMMIT statement for empty
178 >   tables when data included in output.
179 >
180 > 3. Profiling: IBSQL now has conditional compilation flags to enable query performance
181 >   and timing information to be written to stdout. This may be used to locate
182 >   performance bottlenecks.
183 >
184 > 4. SQLParser: only call "OnChanging" event handler when value is different.
185 >
186 > 5. IBDynamicGrid: Update handling of navigation keys for a TDateEdit
187 >
188 > 6. IBCustomDataset: Set internalunprepared flag when transaction ends. This ensures
189 >   that BindFields is called when the query is next activated. Avoids FieldName
190 >   not found error.
191 >
192 > 7. IBUpdate: This is a new IBX component similar to TIBUpdateSQL. It is more general
193 >   purpose and allows the programmer to define any action they want for Update, Insert
194 >   or Delete. This may be complex SQL (similar to a Trigger), application specific
195 >   filtering of updates, or use of statements such as Grant or Revoke instead of
196 >   normal DML. See User Manual for more information.
197 >
198 > IBX Change Log  version                  (2.0-1) Mon, 09 Jan 2017 15:31:49 +0000
199 >
200 > 1. TIBEvents: Fix uninitialised variable that could result in lost events.
201 >
202 > 2. TIBExtract: Added support for FB3 "USAGE" privilege.
203 >
204 > 3. TIBExtract: data formatted as Charset set "octets" is now output using
205 >   hexadecimal notation.
206 >
207 > 4. TIBExtract: Binary Blobs and array data can now be embedded in INSERT statements
208 >   using a simple XML format.
209 >
210 > 5. TIBExtract: extract of individual Triggers and Stored Procedures can now include
211 >   grants to these objects.
212 >
213 > 6. TIBExtract: Stored Procedures and Views output in dependency order to avoid
214 >   dependency problems restoring complex databases.
215 >
216 > 7. TIBXScript: This component has been restructured to allow for the processing of
217 >   embedded XML in INSERT statements and to support interactive sources in addition
218 >   to non-interactive data sources such as files.
219 >
220 > 8. TIBXScript: CREATE DATABASE, DROP DATABASE, CONNECT statements are now supported.
221 >
222 > 9. TIBXScript: ISQL compatiable Set statements are now supported:
223 >   SET SQL DIALECT
224 >   SET TERM
225 >   SET AUTODDL
226 >   SET BAIL
227 >   SET ECHO
228 >   SET COUNT
229 >   SET STATS
230 >   SET NAMES <character set>
231 >
232 > 10. IBVersion unit added to hold current IBX Version Number information.
233 >
234 > 11. TIBExtract: Use character rather than byte length for VarChar procedure arguments.,
235 >    and domain definitions.
236 >
237 > 12. TIBExtract: Triggers now use SQL2003 syntax and database and transaction triggers
238 >    fully supported.
239 >
240 > 13. TIBExtract: when a database dump includes data, the generator values are now also set.
241 >
242 > 14: IBSQLEdit: Unit LCLPlatformDef added to uses clauses for lazarus 1.7 and later.
243 >
244 > IBX Change Log  version     (2.0-0) Tue, 06 Dec 2016 10:33:44 +0000
245 >
246 > See also doc/IBX4LazarusGuide.pdf for important information on
247 > upgrading to IBX2.
248 >
249 > 1. Size property of TIBStringField is now the width in characters of the field
250 >   and not the byte length. This applies only to multi-byte character sets such
251 >   as UTF8. The original approach aligned with TStringField. However, the TStringField
252 >   code is not recognised as a bug and hence this change to align the behaviour.
253 >   The TStringField change is expected in fpc 3.2.0.
254 >
255 > 2. A new property AutoFieldSize: boolean has been added to TIBStringField. When
256 >   true (default) then Size property value saved in the lfm is ignored. Size is
257 >   always set from the dynamic information read from the database. It is unclear
258 >   why anyone would want to override this and set Size to false.
259 >
260 > 3. ibxscript: should now handle correctly a Case..End statement within a procedure
261 >   block.
262 >
263 > 4. IBDatabase: new property - CreateIfNotExists. If true and database does not
264 >   exist when an attempt is made to connect to it (run time only) then an attempt
265 >   is made to create the database.
266 >
267 > 5. IBDatabase: new event - OnCreateDatabase. This event is called after a database
268 >   has been successfully created as a result of a call to CreateDatabase or when
269 >   creating a database after it was found not to exist.
270 >
271 > 6.  DBControlGrid: a race condition could result in the wrong row image being
272 >    written to the cache. This has been avoided by a trip round the message
273 >    loop before rendering the row image.
274 >
275 > 7.  DBControlGrid: It is strongly recommended not to open the source DataSet for
276 >    a DBControlGrid during a Form's "OnShow" event handler. Under GTK2 this is
277 >    known to risk corrupt rendering of row images when the control is first
278 >    displayed. If necessary use "Application.QueueAsyncCall" to delay opening
279 >    of the dataset (see DBControlGrid examples) until the Form's Window has been created.
280 >
281 > 8.  DBControlGrid & IBDynamicGrid: Navigation keys should now work correctly with
282 >    a TDateEdit control located on an editor panel.
283 >
284 > 9.  TIBExtract: brought up-to-date plus many bug fixes.
285 >
286 > 10. DBControlGrid: Removed memory leak when updating rows.
287 >
288 > 11. TIBCMLocalDBSupport: fixed invalid free on upgrade.
289 >
290 > IBX Change Log  version                                           (1.4-3) Thu, 22 Sep 2016 18:10:15 +0100
291 >
292 > 1. IBCustomDataset: When calling SetCodePage, no longer request transliteration
293 >   when target codepage is CP_NONE. This is a workaround for
294 >   http://bugs.freepascal.org/view.php?id=30622.
295 >
296 > 2. DBLog option removed from TIBStatisticalService - not supported by server
297 >   since Firebird 1.5.
298 >
299 > 3. ibxscript: An error is no longer generated for "on commit preserve rows" or
300 >   similar.
301 >
302 > 4. IBCodePage: updated mapping between codepages and character id.
303 >
304 > 5. ftWideString and ftWideMemo withdrawn. There is no UTF16 character set in
305 >   Firebird. Character sets with a char width of two are not UTF16.
306 >
307 > 6. Strings received from the database are now always transliterated into UTF8
308 >   regardless of the database character set or connection character set. This
309 >   is for compatibility with the LCL.
310 >
311 > IBX Change Log  version  (1.4-2) Thu, 22 Sep 2016 15:25:27 +0100
312 >
313 > 1. IBBlob: Defer reading of blob until read method called. This avoids having to
314 >   read in an entire blob just to get the size of the blob. General performance
315 >   improvement when opening datasets containing blobs.
316 >
317 > 2. Clearing a  Blob now sets the corresponding field's modified flag.
318 >
319 > 3. IBLookupCombo: When not performing auto-complete, original query sort order
320 >   is now used.
321 >
322 > 4. IBDynamicGrid: Add OnSelectEditor event. Allows editor panel to be dynamically
323 >   determined.
324 >
325 > 5. IBDynamicGrid: Recompute column widths after dataset closed and re-opened.
326 >
327 > 6. IBLookupCombo: LazUTF8 added to uses clause to avoid compilation problems post
328 >   lazarus 1.6.0
329 >
330 > 7. IBControls. Removed "runtime" from list of paths to avoid "multiple packages"
331 >   compilation error.
332 >
333 > IBX Change Log  version                                 (1.4-1) Tue, 17 May 2016 09:14:51 +0100
334 >
335 > 1. No character set specified for connection: when a text blob is retrieved, the
336 >  character set is determined by looking up the native character set using then
337 >  Firebird API. Otherwise a text mode blob is assumed to have the same character
338 >  set as the connection.
339 >
340 > 2. TIBGUIInterface: this is an internal interface. Minor type changes to allow
341 >   for Login Dialog returing a change to the database path.
342 >
343 > 3. Design Time Database and Server login Dialogs now allow the Database Name/Server Name
344 >   to be changed from that given in the TIBDatabase/TIBServer component and for the
345 >   entered value to be saved on a project specific basis (design time only).
346 >
347 > 4. IBDynamicGrid: TDBLookupCellEditor now compares its DataFieldName with the
348 >   column fieldname. If they are the same then it is acts as a look up for the KeyValue
349 >   Otherwise, it sets the column text to the selected ListField Value.
350 >
351 > 5. IBDynamicGrid: Only visible columns are now taken into account When recalculating
352 >   column width.
353 >
354 > 6. IBLookupComboEditBox: Fix error with autocomplete query when a RelationName is given
355 >   and a case insensitive search is requested.
356 >
357 > 7. IBDynamicGrid: No longer ignores notifications removing Column Totals controls
358 >   or column ListSource.
359 >
360 > 8. IBQuery: no longer performs unnecessary refresh of SQL Text (and hence avoids an
361 >   unprepare) when closing and the text has not changed.
362 >
363 > 9. IBSQL: Base the cursor name on a GUID instead of a hexstr version of the class pointer.
364 >   Less likely to cause a cursor re-use error on Windows.
365 >
366 > 10.SV5IPC: include workaround for OSX. FPC 3.0.0 has broken ipc module for darwin.
367 >   Expected to be fixed in 3.0.2. Hence workaround only applies to 3.0.0.
368 >
369 > 11. TIBTreeView: Guard against nil destination on record changed
370 >
371 > 12. AnsiString Code page support: TIBStringField.AsString and TIBMemoField.AsString now return a
372 >    string type with the code page set to reflect the returned field encoding after
373 >    Firebird driver transliteration, if any.  FPC 3.0.0 onwards only. Behaviour unchanged for
374 >    earlier versions.
375 >
376 > 13. AnsiString Code page support: Assigning to TIBStringField.AsString and TIBMemoField.AsString
377 >    will now result in transliteration to the code page specified for the Firebird driver
378 >    if the assigned string has a different code page. FPC 3.0.0 onwards only.
379 >
380 > 14. TIBDatabase: new property UseDefaultSystemCodePage. When set any lc_ctype parameter
381 >    is ignored and the lc_ctype value, when the database is opened, is set to align with
382 >    the DefaultSystemCodePage (FPC 3.0.0 onwards). Normally, this is what you want and should ensure
383 >    platform independence. Note: this applies to FPC 3.0.0 and earlier versions. Pre FPC
384 >    3.0.0, when this property is true, the lc_ctype is UTF8 except under windows when
385 >    the GETACP is used to determine the Windows code page.
386 >
387 > 15. TIBDatabase: new property DefaultCharSetName. This is the Firebird character set
388 >    name used as the lc_ctype when the database was opened. Only valid while the
389 >    Database is connected.
390 >
391 > 16. TIBDatabase: new property DefaultCodePage (FPC >=3.0.0 only). This is the codepage
392 >    id that corresponds to the DefaultCharSetName.
393 >
394 > IBX Change Log  version                          (1.4-0) Mon, 15 Feb 2016 14:44:24 +0000
395 >
396 > 1. Unix: If Firebird Embedded Server shared object is loaded and a local database
397 >   path is given and database attach fails due to access permission issues on the
398 >   temp directory or security database, then the attach is retried with "localhost:"
399 >   prefixing the databasename. This should avoid problems when the database has to
400 >   be accessed by a local (e.g. classic) server and libfbembed is used.
401 >
402 > 2. Windows: revised search order for Firebird DLL:
403 >     i.   The Firebird Embedded Server in the application Directory.
404 >     ii.  If the FIREBIRD environment variable is set then the directory this
405 >          points to is searched for the FB Client DLL and then then underlying
406 >          "bin" directory.
407 >     iii. Registry Key HKEY_LOCAL_MACHINE\SOFTWARE\Firebird Project\Firebird Server\Instances
408 >          is used to locate the Firebird installation directory and the underlying
409 >          "bin" directory is searched for the FB Client DLL.
410 >     iv.  The Default installation directories C:\Program Files\Firebird\Firebird_2_x
411 >          are searched for the FB Client DLL.
412 >     v.   The PATH Environment variable is used to search for the FB Client DLL.
413 >     vi.  Finally the  PATH Environment variable is used to search for IBASE.DLL.
414 >
415 > 3. New Component: TIBXScript. This is an ISQL compatible SQL script execution engine.
416 >   See doc/readme.scriptengine and example applications.
417 >
418 > 4. New Component: TIBlocalDBSupport. This is a TIBDatabase support component intended to
419 >   simplify the use of the embedded firebird server on both Linux and Windows platforms.
420 >   See dpc/readme.localdatabase and example applications.
421 >
422 > 5. IBDynamicGrid: Reordering on column header click should now also work for
423 >   dynamic columns.
424 >
425 > 6. ISQLMonitor: (Windows only). Mutex added to TMultilockGate to avoid race condition
426 >   between incrementing/decrementing the lock count and signalling the event.
427 >
428 > IBX Change Log  version           (1.3-2) Tue, 26 Jan 2016 14:39:54 +0000
429 >
430 > 1.3.2 was never formally released and only made available as beta copies.
431 >
432 > 1. DBControlGrid,IBDynamicGrid: Ignore down arrow and up arrow in TCustomMemo
433 >
434 > 2. IBDynamicGrid: Now deals correctly with a single column grid which has no indicator and autosize column
435 >
436 > 3. IBLookupComboEditBox: reset timer on each key press - avoids timer going off too early
437 >
438 > 4. IBDynamicGrid: Call event OnUpdateSortOrder even when aliasname not found in dataset
439 >   i.e. when it is a calculated field
440 >
441 > 5. IBDynamicGrid: Fix problem selecting a different row when expanded row at end of grid.
442 >   This problem was due to a race condition between recalculating row heights and
443 >   determining which row was selected by the mouse click. The row height calculation
444 >   is now deferred by an extra trip round the message loop allowing the row to
445 >   be always calculated on the current grid layout rather than risking it being
446 >   calculated on the grid layout after the expanded row has been shrunk.
447 >
448 > 6. IBLookupComboEditBox: avoid race condition between cm_killfocus and cm_exit on
449 >   Windows.
450 >
451 > 7. TIBStringField: Now has two new public properties: CharacterSetName: string and CharacterSetSize: integer;
452 >   These properties allow the (Firebird) character set name for the field and the max number of bytes per character
453 >   to be determined at runtime. See doc/readme.charactersets.html.
454 >
455 > 8. TIBWideStringField: This is a new field type with the same additional public properties as above and subclassed from
456 >   TWideStringField. This field type is used with the character size reported by Firebird is two. See doc/readme.charactersets.html.
457 >
458 > 9. TIBMemoField and TIBWideMemoField: new field types with the same additional public properties as above and subclassed from
459 >   TMemoField and TWideMemoField respectively. These field types are used with Blob subtype 1 and a characterset size of
460 >   1, 3 or 4 (TIBMemoField) or 2 (TIBWideMemoField). See doc/readme.charactersets.html.
461 >
462 >   Both also have a new published property "DisplayTextAsClassName". If false (default) the displaytext is generated
463 >   from the blob text by truncating the string to the displaywidth (in characters not bytes). A displaywidth of zero
464 >   implies no truncation.
465 >
466 > 10. IBLookupComboEditBox: Force autocomplete when EditingDone called and timer active.
467 >
468 > 11. IBDynamicGrid: Call DataSet.Append when entering edit mode and dataset empty and not in insert state
469 >   (avoids "Not in Edit Mode" error).
470 >
471 > 12. IBDynamicGrid: Correctly resize grid when one column width plus indicator.
472 >
473 > 13. IBDynamicGrid: Ensure Editor Panel has focus when shown - avoids Windows API calling
474 >    DBGrid.DoExit on subsequent mouse click (e.g. on child control such as a tabbed page control.
475 >
476 > 14. IBDynamicGrid: ignore up, down tab and return when editorpanel open and focus in a TCustomGrid descendent.
477 >
478 > 15. DBControlGrid: Stop flashing grid when dataset closed and then re-opened while DisabledControls
479 >
480 > 16. IBQuery: Bug fixed that prevented SQL being set programmatically once the Parser had been invoked.
481 >
482 > 17. IBCustomDataSet: On close, parser is now freed and Select SQL reverts to value before DataSet Opened.
483 >
484 > IBX Change Log  version        (1.3-1) Sat, 18 Jul 2015 13:30:50 +0100
485 >
486 > 1.   OnCloseUp Event Handler added to TDBLookupProperties
487 >
488 > 2.   IBDynamicGrid: Call to OnEditorPanelHide is now last editor hide action - avoids
489 >     problem with row size when exception is called.
490 >
491 > 3.   IBLookupComboEditBox: Force pending autocomplete on combobox exit.
492 >
493 > 4.   IBDynamicGrid and DBControlGrid: Keyhandler now ignores up, down, escape and return keys if
494 >     in a TCustomComboBox and ignores return key if in a TCustomMemo
495 >
496 > 5.   IBLookupComboEditBox: Ensure that KeyValue is set correctly when full text
497 >     keyed in i.e. when autocomplete not performed
498 >
499 > 6.   Cleanup of "Uses" clauses and add console mode support. IBX should now support
500 >     console mode applications with all LCL required functions (builtin dialogs and
501 >     cursor management) centralised in the  IBDialogs unit. As long as "IBDialogs" is
502 >     not included in your project, IBX should compile and link with a console mode program.
503 >     See consolemode example and its "readme"for further guidence. DO NOT add the ibexpress package to a
504 >     console mode application or the IDE will automatically assume that your
505 >     application is GUI based. Instead, you should include the ibexpressconsolemode package.
506 >
507 >     IMPORTANT NOTE: IBDialogs must be included in GUI applications in order
508 >     to use the built in dialogs and cursor management. IBDialogs is
509 >     included by default if "ibexpress" is in your project source's "uses" clause.
510 >     This should be the case for all projects created through the IDE. This is why
511 >     you do not want to add the ibexpress package to console mode applications. The
512 >     ibexpressconsolemode package has been created to allow console mode programs
513 >     to avoid adding LCL dependencies when using IBX, while still having the
514 >     unit search paths set up correctly.
515 >
516 >     Existing users should check to ensure that the "ibexpress" unit is included in
517 >     each project's source file (*.lpr).
518 >
519 >     You may find that in order for the IDE to recognise that ibexpressconsolemode
520 >     exists, you have to first open the package in the IDE and then close it. This
521 >     adds it to the most recently accessed packages list. To make it permanently
522 >     available, add the package name to lazarus' staticpackages.inc file.
523 >
524 >         Thanks to Julio Jiménez for suggesting support of console mode.
525 >
526 > 7.   SQL Parser can now accept quoted strings that include new lines
527 >
528 > 8.   IBDynamicGrid: Lookup Cell Editor - the cursor is now positioned at end
529 >     of text on start of edit. This is particularly useful when tabbing to a
530 >     column and then inserting text.
531 >
532 > 9.   New Examples provided for IB Services and ISQLMonitor.
533 >
534 > 10. Fix error when writing to blob streams that recorded only the last buffer
535 >    write in the blob stream. In most cases, this did not cause a problem as the
536 >    IB Blob Stream is written in a single write. However, with the TDBImage, write
537 >    of a graphic type prefix was lost which caused a problem when the image could
538 >        not be automatically recognised.
539 >
540 > 11. Improve generation of random cursor names in TIBSQL - avoid risk of "cursor
541 >    already open" errors due to random numbers used for the cursor name being identical.
542 >
543 > 12. IBTable: corrected error that could result in an "Index out of bounds" error
544 >    when opening the table and the Primary Key is the last or only column in the
545 >    table. Thanks to Rick Hoover for the fix.
546 >
547 > 13. Fix TIBDatabase initialisation of lc_ctype under unix. Set to "UTF8" instead
548 >    of "UTF-8", and update list of available database character sets. Existing
549 >    users should check the current lc_ctype setting in their applications.
550 >
551 > IBX Change Log  version  (1.2-4) Sat, 09 May 2015 12:38:29 +0100
552 >
553 > 1.  Firebird Services: avoid List Index error when opening a service with an
554 >    empty Params property.
555 >
556 > 2.  IBControls: Fix problem with new link mechanism introduced in 1.2.3.
557 >    Link now set up in Loaded method - avoids occasional failure to apply
558 >    SQL markup on initial open.
559 >
560 > 3.  "Employees" example performance improvements when scrolling.
561 >
562 > 4.  DBControlGrid: Correctly handle edit panel removal when panel is child control of a
563 >    TFrame. Force recaching of selected frame to avoid GTK race (results in a
564 >    random image cached).
565 >
566 > 5.  DBControlGrid: Should now react to changes in panel height at run time.
567 >
568 > 6.  IBDynamicGrid: Redraws rows below on panel editor hide - avoids blank space at end of grid  
569 >    even when further rows exist.
570 >
571 > 7.  DBControlGrid: DefaultRowHeight is no longer a published property as it should
572 >    always be derived from panel height and setting this property can cause confusion.
573 >    Note for existing projects: to avoid a missing property error at run time,
574 >    each form using the DBControlGrid must be opened, updated and saved in the IDE
575 >    in order to remove the property value from the lfm.
576 >
577 >
578 > IBX Change Log  version (1.2-3) Tue, 14 Apr 2015 14:11:17 +0100
579 >
580 > 1.  TIBStoredProc. Prepare now called by ParamByName to avoid need to always
581 >    call Prepare before setting parameter values.
582 >
583 > 2.  Error message on ParamByName (all cases) not found now includes name of missing parameter.
584 >
585 > 3.  Code tidyup and more robust handling of dsql information result vector.
586 >
587 > 4.  Support for centralised handling of transaction status changes. TIBTransaction
588 >    has been given additional events "AfterEdit", "AfterInsert", "AfterDelete", "AfterPost"
589 >    and "AfterExecQuery". The first three are called after the same event is called
590 >    for an IBCustomDataSet descendent using the Transaction. The fourth is called
591 >    after a call to TIBSQL.ExecQuery, again using this transaction. These new events
592 >    enable monitoring of transaction status changes for a given transaction to be
593 >    handled in a single place. For example, when a change to the dataset occurs
594 >    an indicator can be set that shows the user that in order to save changes,
595 >    the transaction should be committed.  Rather than doing this per dataset, this
596 >    can now be done per transaction.
597 >
598 > 5.  TDataSet.CheckBrowseMode automatically posts changes to the current row when
599 >    the dataset is scrolled. However, any changes to the current row are, by default,
600 >    discarded when the dataset is closed. TIBDataSet, TIBQuery and TIBTable now
601 >    have a new property "DataSetCloseAction" that adds automatic posting of changes
602 >    on dataset close. If this property is set to dcDiscardChanges (default) then the
603 >    behaviour is unchanged from previous versions. if the value is set to dcSaveChanges
604 >    then IBX will attempt to post any unsaved changes before the dataset is closed
605 >    (and after the BeforeClose event handler is called). The exception is when the
606 >    dataset is being closed as a result of a transaction rollback. In this case,
607 >    no action is taken and any unsaved  changes are discarded. This avoids both
608 >    unnecessary overhead and the risk that a validation error may occur in the Post
609 >    raising an exception and thereby preventing a rollback.
610 >
611 > 6.  String Field sizes and Display Widths should now be correct for multi-byte character sets.
612 >    In earlier versions, the Display Width was set to the maximum byte width rather than the character
613 >    width. Display Widths are now corrected by dividing by the max byte width per character.
614 >    For UTF8 character sets, the byte width is four and hence the Display Width will be
615 >    the byte width divided by 4. The byte width of each character set is determined
616 >    dynamically when the database connection is estabished from the RDB$CHARACTER_SETS
617 >    system table. (see also http://bugs.freepascal.org/view.php?id=27766).
618 >
619 > 7.  SQLParser will now correctly parse SQL Text which contains ':' within quoted string.
620 >
621 > 8.  IBLookupComboEditBox: List should now always be restored to full list when the
622 >    control loses focus. Default Key press default interval reduced to 200ms.
623 >
624 > 9.  DBControlGrid: Ensure that selection is changed to newly appended row, even
625 >    when dataset rows are less than visible rows.
626 >
627 > 10. IBDynamicGrid: Editor Panel is not shown on indicator click if Datasource
628 >    does not exist or DataSet is empty. More responsive on dataset open. New event
629 >    OnRestorePosition. Column sort disabled if no header row.
630 >
631 > 11. IBTreeView: improved handling of response to "Add Node". Avoid scrolling dataset
632 >    while dataset state is dsInsert. Avoids posting errors.
633 >
634 > 12. IBControls: New mechanism for distributing UpdateSQL and UpdateParams events. This is to
635 >    avoid conflict with DisableControls/EnableControls with Master/Detail linked tables.
636 >
637 > 13. IBLookupComboEditBox: Now avoids SQL Errors when combo box text contains single quotes.
638 >
639 > 14. TIBDataSet and TIBQuery: new Event - OnValidatePost. This event has been introduced
640 >    to solve a specific problem. That is when the dataset cursor is moved (e.g. by
641 >    a grid mouse click and the current row is being edited or inserted. In this case, TDataset
642 >    always "posts" the current record regardless or whether or not it may be more appropriate
643 >    to cancel any changes; the post occurs before the "BeforeScroll" event fires due to the way the
644 >    "MoveBy" function is implemented by TDataSet. The OnValidatePost event is called
645 >    as the first action of the "Post" method and allows the handler to convert the Post
646 >    into a Cancel if that is the appropriate action on moving to a different row. This is
647 >    achieved by returning with "CancelPost" argument set to true. Note that an exception could be
648 >    raised here, but it may still be more appropriate to validate a post and signal
649 >    a problem in the "BeforePost" event handler. See readme.automaticposts.xhtml)
650 >
651 > 15. On Unix derived systems, the Firebird library name can now be given as a colon
652 >    separated list. Each library name on the list is tried in turn, in left to right
653 >    order with the first found being used as the firebird library. By default, on Linux,
654 >    the library name list is 'libfbembed.so.2.5:libfbembed.so.2.1:libfbclient.so.2'. This can be
655 >    overidden by the FBLIB environment variable or the OnGetLibraryName function.
656 >
657 >    Note: when using the libfbembed.so, if you prefix the database name with "localhost:"
658 >    then it will still attempt to access the database via the Firebird Server and will
659 >    require a username and password. If only the pathname is given, then the username
660 >    and password should be omitted and the unix file permissions are used to grant
661 >    access.
662 >
663 > IBX Change Log  version  (1.2-2) Sat, 14 Mar 2015 11:35:04 +0000
664 >
665 > 1.  A new IBControl - TDBControlGrid has been added. TDBControlGrid a lookalike
666 >    rather than a clone for the Delphi TDBCrtlGrid. TDBControlGrid is a single column grid
667 >    that replicates a TWinControl - typically a TPanel or a TFrame in each row. Each row
668 >    corresponds to a row of the linked DataSource. Any data aware control on the
669 >    replicated (e.g.) TPanel will then appear to have the appropriate value for the row.
670 >
671 > 2. As suggested by Julio Jiménez, a new property "SQLHourGlass" has been added to TIBDatabase.
672 >   When set to false (default true), the Hour Glass cursor is supcpressed and no cursor change
673 >   takes place during database access. This may be useful when there are performance issues with
674 >   the change of cursor. Setting the property to false suppresses the change of cursor.
675 >
676 > 3. As suggested by Julio Jiménez, a new property "AutoCommit" has been added to TIBDataSet, TIBQuery
677 >   and TIBTable. When set to acCommitRetaining (Default: acDisabled), a call is made to
678 >   Transaction.CommitRetaining immediately after every Post or Delete. This has the effect of
679 >   making all changes permanent immediately rather than when the transaction is explicitly
680 >   committed.
681 >
682 > 4. Experimental support for the Firebird 3 SQL_BOOLEAN type has been added while still
683 >   using the legacy Firebird API. Thanks to Gabor Boros for helping to test this feature.
684 >
685 > IBX Change Log  version      (1.2-1) Fri, 13 Mar 2015 11:14:15 +0000
686 >
687 > Development version only.
688 >
689 > IBX Change Log  version   (1.2-0) Thu, 26 Feb 2015 10:34:04 +0000
690 >
691 > 1. An internal select SQL Parser is now available for TIBCustomDataset descendents.
692 >   This is typically used during an "OnBeforeOpen" event handler to manipulate the
693 >   "Where" and "Having" clauses to implement user specified filters of arbitrary
694 >   complexity.
695 >
696 > 2. A new Component Palette entry "Firebird Data Controls" is now available. This has
697 >   three new data aware controls dependent on IBX and which make use of the SQL Parser.
698 >   These are:
699 >
700 >   - TIBLookupComboEditBox
701 >   - TIBDynamicGrid
702 >   - TIBTreeview
703 >
704 >   TIBLookupComboEditBox is a TDBLookupComboBox descendent that implements "autocomplete"
705 >   of typed in text and "autoinsert" of new entries. Autocomplete uses SQL manipulation
706 >   to revise the available list and restrict it to items that are prefixed by the
707 >   typed text (either case sensitive or case insensitive). Autoinsert allows a
708 >   newly typed entry to be added to the list dataset and included in the available
709 >   list items.
710 >
711 >   TIBDynamicGrid is a TDBGrid descendent that provides for:
712 >   - automatic resizing of selected columns to fill the available row length
713 >   - automatic positioning and sizing of a "totals" control, typically at the
714 >     column footer, on a per column basis.
715 >   - DataSet resorting on header row click, sorting the dataset by the selected column.
716 >     A second click on the same header cell reversed the sort order.
717 >   - Support for a "Panel Editor". That is on clicking the indicator column, the row
718 >     is automatically expanded and a panel superimposed on it. The panel can have any
719 >     number of child controls, typically data aware controls with the same datasource
720 >     as the grid allowing for editing of additional fields and more complex editors.
721 >   - Reselection of the same row following resorting.
722 >   - A new cell editor that provides the same functionality as TIBLookupComboEditBox.
723 >     Its properties are specified on a per column basis and allows for one or more
724 >     columns to have their values selected from a list provided by a dataset.
725 >     Autocomplete and autoinsert are also available. The existing picklist editor
726 >     is unaffected by the extension.
727 >
728 >   TIBTreeView is a data aware TCustomTreeView.
729 >
730 > 3. When getting a field value using FieldByName.AsVariant, an SQL_INT64 with a
731 >   zero scale will no longer return an error. An Int64 will be returned instead.
732 >
733 > 4. TIBTransaction now has events for Before and After Transaction End and a new function
734 >   "GetEndAction" allowing the EndAction to be accessed by these event handlers.
735 >
736 > 5. TIBQuery can now handle correctly queries which contain the same keyword parameter
737 >   repeated multiple times.
738 >
739 > 6. TIBUpdateSQL will no longer return an error when "RowsAffected" is <> 1. This error
740 >   check used to get in the way of using Stored Procedures, and "Update or Insert"
741 >   statements.
742 >
743 > 7. Insert, Modify and Delete property Editors now support Query Generation from
744 >   Stored Procedures.
745 >
746 > 8. Three new examples illustrate the use of the new IB Controls
747 >
748 >
749 > IBX Change Log  version  (1.1-0) Mon, 07 Jul 2014 14:01:07 +0100
750  
751   1. TIBXSQLVAR code clean up and optimisation to improve client side "prepare" and parameter
752     setting performance. See "readme.field+param.names in the doc folder.(Thanks to

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