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Revision 7 by tony, Sun Aug 5 18:28:19 2012 UTC vs.
Revision 60 by tony, Mon Mar 27 15:21:02 2017 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                   (2.0.3) tba, 24 Feb 2017 12:17:53 +0000
2 >
3 > 1. IBCustomDataset: Minor change of PChar to PByte for compatibility with fbintf
4 >   changes.
5 >
6 > 2. IBCustomDataset: Fixed use of incorrect datasize in TIBStringField.SetAsString.
7 >   Bug could result in truncated multi-byte character set values.
8 >
9 > 3. Changes consequential on moving fbintf character set utility functions from
10 >   IFirebirdAPI to IAttachment.
11 >
12 > IBX Change Log  version                   (2.0-2) Fri, 24 Feb 2017 12:17:53 +0000
13 >
14 > 1. TIBDatabase.CreateDatabase: extract full DB Name from SQL using reg ex in order to
15 >   include remote system name.
16 >
17 > 2. TIBExtract: No longer include comment header and COMMIT statement for empty
18 >   tables when data included in output.
19 >
20 > 3. Profiling: IBSQL now has conditional compilation flags to enable query performance
21 >   and timing information to be written to stdout. This may be used to locate
22 >   performance bottlenecks.
23 >
24 > 4. SQLParser: only call "OnChanging" event handler when value is different.
25 >
26 > 5. IBDynamicGrid: Update handling of navigation keys for a TDateEdit
27 >
28 > 6. IBCustomDataset: Set internalunprepared flag when transaction ends. This ensures
29 >   that BindFields is called when the query is next activated. Avoids FieldName
30 >   not found error.
31 >
32 > IBX Change Log  version                  (2.0-1) Mon, 09 Jan 2017 15:31:49 +0000
33 >
34 > 1. TIBEvents: Fix uninitialised variable that could result in lost events.
35 >
36 > 2. TIBExtract: Added support for FB3 "USAGE" privilege.
37 >
38 > 3. TIBExtract: data formatted as Charset set "octets" is now output using
39 >   hexadecimal notation.
40 >
41 > 4. TIBExtract: Binary Blobs and array data can now be embedded in INSERT statements
42 >   using a simple XML format.
43 >
44 > 5. TIBExtract: extract of individual Triggers and Stored Procedures can now include
45 >   grants to these objects.
46 >
47 > 6. TIBExtract: Stored Procedures and Views output in dependency order to avoid
48 >   dependency problems restoring complex databases.
49 >
50 > 7. TIBXScript: This component has been restructured to allow for the processing of
51 >   embedded XML in INSERT statements and to support interactive sources in addition
52 >   to non-interactive data sources such as files.
53 >
54 > 8. TIBXScript: CREATE DATABASE, DROP DATABASE, CONNECT statements are now supported.
55 >
56 > 9. TIBXScript: ISQL compatiable Set statements are now supported:
57 >   SET SQL DIALECT
58 >   SET TERM
59 >   SET AUTODDL
60 >   SET BAIL
61 >   SET ECHO
62 >   SET COUNT
63 >   SET STATS
64 >   SET NAMES <character set>
65 >
66 > 10. IBVersion unit added to hold current IBX Version Number information.
67 >
68 > 11. TIBExtract: Use character rather than byte length for VarChar procedure arguments.,
69 >    and domain definitions.
70 >
71 > 12. TIBExtract: Triggers now use SQL2003 syntax and database and transaction triggers
72 >    fully supported.
73 >
74 > 13. TIBExtract: when a database dump includes data, the generator values are now also set.
75 >
76 > 14: IBSQLEdit: Unit LCLPlatformDef added to uses clauses for lazarus 1.7 and later.
77 >
78 > IBX Change Log  version     (2.0-0) Tue, 06 Dec 2016 10:33:44 +0000
79 >
80 > See also doc/IBX4LazarusGuide.pdf for important information on
81 > upgrading to IBX2.
82 >
83 > 1. Size property of TIBStringField is now the width in characters of the field
84 >   and not the byte length. This applies only to multi-byte character sets such
85 >   as UTF8. The original approach aligned with TStringField. However, the TStringField
86 >   code is not recognised as a bug and hence this change to align the behaviour.
87 >   The TStringField change is expected in fpc 3.2.0.
88 >
89 > 2. A new property AutoFieldSize: boolean has been added to TIBStringField. When
90 >   true (default) then Size property value saved in the lfm is ignored. Size is
91 >   always set from the dynamic information read from the database. It is unclear
92 >   why anyone would want to override this and set Size to false.
93 >
94 > 3. ibxscript: should now handle correctly a Case..End statement within a procedure
95 >   block.
96 >
97 > 4. IBDatabase: new property - CreateIfNotExists. If true and database does not
98 >   exist when an attempt is made to connect to it (run time only) then an attempt
99 >   is made to create the database.
100 >
101 > 5. IBDatabase: new event - OnCreateDatabase. This event is called after a database
102 >   has been successfully created as a result of a call to CreateDatabase or when
103 >   creating a database after it was found not to exist.
104 >
105 > 6.  DBControlGrid: a race condition could result in the wrong row image being
106 >    written to the cache. This has been avoided by a trip round the message
107 >    loop before rendering the row image.
108 >
109 > 7.  DBControlGrid: It is strongly recommended not to open the source DataSet for
110 >    a DBControlGrid during a Form's "OnShow" event handler. Under GTK2 this is
111 >    known to risk corrupt rendering of row images when the control is first
112 >    displayed. If necessary use "Application.QueueAsyncCall" to delay opening
113 >    of the dataset (see DBControlGrid examples) until the Form's Window has been created.
114 >
115 > 8.  DBControlGrid & IBDynamicGrid: Navigation keys should now work correctly with
116 >    a TDateEdit control located on an editor panel.
117 >
118 > 9.  TIBExtract: brought up-to-date plus many bug fixes.
119 >
120 > 10. DBControlGrid: Removed memory leak when updating rows.
121 >
122 > 11. TIBCMLocalDBSupport: fixed invalid free on upgrade.
123 >
124 > IBX Change Log  version                                           (1.4-3) Thu, 22 Sep 2016 18:10:15 +0100
125 >
126 > 1. IBCustomDataset: When calling SetCodePage, no longer request transliteration
127 >   when target codepage is CP_NONE. This is a workaround for
128 >   http://bugs.freepascal.org/view.php?id=30622.
129 >
130 > 2. DBLog option removed from TIBStatisticalService - not supported by server
131 >   since Firebird 1.5.
132 >
133 > 3. ibxscript: An error is no longer generated for "on commit preserve rows" or
134 >   similar.
135 >
136 > 4. IBCodePage: updated mapping between codepages and character id.
137 >
138 > 5. ftWideString and ftWideMemo withdrawn. There is no UTF16 character set in
139 >   Firebird. Character sets with a char width of two are not UTF16.
140 >
141 > 6. Strings received from the database are now always transliterated into UTF8
142 >   regardless of the database character set or connection character set. This
143 >   is for compatibility with the LCL.
144 >
145 > IBX Change Log  version  (1.4-2) Thu, 22 Sep 2016 15:25:27 +0100
146 >
147 > 1. IBBlob: Defer reading of blob until read method called. This avoids having to
148 >   read in an entire blob just to get the size of the blob. General performance
149 >   improvement when opening datasets containing blobs.
150 >
151 > 2. Clearing a  Blob now sets the corresponding field's modified flag.
152 >
153 > 3. IBLookupCombo: When not performing auto-complete, original query sort order
154 >   is now used.
155 >
156 > 4. IBDynamicGrid: Add OnSelectEditor event. Allows editor panel to be dynamically
157 >   determined.
158 >
159 > 5. IBDynamicGrid: Recompute column widths after dataset closed and re-opened.
160 >
161 > 6. IBLookupCombo: LazUTF8 added to uses clause to avoid compilation problems post
162 >   lazarus 1.6.0
163 >
164 > 7. IBControls. Removed "runtime" from list of paths to avoid "multiple packages"
165 >   compilation error.
166 >
167 > IBX Change Log  version                                 (1.4-1) Tue, 17 May 2016 09:14:51 +0100
168 >
169 > 1. No character set specified for connection: when a text blob is retrieved, the
170 >  character set is determined by looking up the native character set using then
171 >  Firebird API. Otherwise a text mode blob is assumed to have the same character
172 >  set as the connection.
173 >
174 > 2. TIBGUIInterface: this is an internal interface. Minor type changes to allow
175 >   for Login Dialog returing a change to the database path.
176 >
177 > 3. Design Time Database and Server login Dialogs now allow the Database Name/Server Name
178 >   to be changed from that given in the TIBDatabase/TIBServer component and for the
179 >   entered value to be saved on a project specific basis (design time only).
180 >
181 > 4. IBDynamicGrid: TDBLookupCellEditor now compares its DataFieldName with the
182 >   column fieldname. If they are the same then it is acts as a look up for the KeyValue
183 >   Otherwise, it sets the column text to the selected ListField Value.
184 >
185 > 5. IBDynamicGrid: Only visible columns are now taken into account When recalculating
186 >   column width.
187 >
188 > 6. IBLookupComboEditBox: Fix error with autocomplete query when a RelationName is given
189 >   and a case insensitive search is requested.
190 >
191 > 7. IBDynamicGrid: No longer ignores notifications removing Column Totals controls
192 >   or column ListSource.
193 >
194 > 8. IBQuery: no longer performs unnecessary refresh of SQL Text (and hence avoids an
195 >   unprepare) when closing and the text has not changed.
196 >
197 > 9. IBSQL: Base the cursor name on a GUID instead of a hexstr version of the class pointer.
198 >   Less likely to cause a cursor re-use error on Windows.
199 >
200 > 10.SV5IPC: include workaround for OSX. FPC 3.0.0 has broken ipc module for darwin.
201 >   Expected to be fixed in 3.0.2. Hence workaround only applies to 3.0.0.
202 >
203 > 11. TIBTreeView: Guard against nil destination on record changed
204 >
205 > 12. AnsiString Code page support: TIBStringField.AsString and TIBMemoField.AsString now return a
206 >    string type with the code page set to reflect the returned field encoding after
207 >    Firebird driver transliteration, if any.  FPC 3.0.0 onwards only. Behaviour unchanged for
208 >    earlier versions.
209 >
210 > 13. AnsiString Code page support: Assigning to TIBStringField.AsString and TIBMemoField.AsString
211 >    will now result in transliteration to the code page specified for the Firebird driver
212 >    if the assigned string has a different code page. FPC 3.0.0 onwards only.
213 >
214 > 14. TIBDatabase: new property UseDefaultSystemCodePage. When set any lc_ctype parameter
215 >    is ignored and the lc_ctype value, when the database is opened, is set to align with
216 >    the DefaultSystemCodePage (FPC 3.0.0 onwards). Normally, this is what you want and should ensure
217 >    platform independence. Note: this applies to FPC 3.0.0 and earlier versions. Pre FPC
218 >    3.0.0, when this property is true, the lc_ctype is UTF8 except under windows when
219 >    the GETACP is used to determine the Windows code page.
220 >
221 > 15. TIBDatabase: new property DefaultCharSetName. This is the Firebird character set
222 >    name used as the lc_ctype when the database was opened. Only valid while the
223 >    Database is connected.
224 >
225 > 16. TIBDatabase: new property DefaultCodePage (FPC >=3.0.0 only). This is the codepage
226 >    id that corresponds to the DefaultCharSetName.
227 >
228 > IBX Change Log  version                          (1.4-0) Mon, 15 Feb 2016 14:44:24 +0000
229 >
230 > 1. Unix: If Firebird Embedded Server shared object is loaded and a local database
231 >   path is given and database attach fails due to access permission issues on the
232 >   temp directory or security database, then the attach is retried with "localhost:"
233 >   prefixing the databasename. This should avoid problems when the database has to
234 >   be accessed by a local (e.g. classic) server and libfbembed is used.
235 >
236 > 2. Windows: revised search order for Firebird DLL:
237 >     i.   The Firebird Embedded Server in the application Directory.
238 >     ii.  If the FIREBIRD environment variable is set then the directory this
239 >          points to is searched for the FB Client DLL and then then underlying
240 >          "bin" directory.
241 >     iii. Registry Key HKEY_LOCAL_MACHINE\SOFTWARE\Firebird Project\Firebird Server\Instances
242 >          is used to locate the Firebird installation directory and the underlying
243 >          "bin" directory is searched for the FB Client DLL.
244 >     iv.  The Default installation directories C:\Program Files\Firebird\Firebird_2_x
245 >          are searched for the FB Client DLL.
246 >     v.   The PATH Environment variable is used to search for the FB Client DLL.
247 >     vi.  Finally the  PATH Environment variable is used to search for IBASE.DLL.
248 >
249 > 3. New Component: TIBXScript. This is an ISQL compatible SQL script execution engine.
250 >   See doc/readme.scriptengine and example applications.
251 >
252 > 4. New Component: TIBlocalDBSupport. This is a TIBDatabase support component intended to
253 >   simplify the use of the embedded firebird server on both Linux and Windows platforms.
254 >   See dpc/readme.localdatabase and example applications.
255 >
256 > 5. IBDynamicGrid: Reordering on column header click should now also work for
257 >   dynamic columns.
258 >
259 > 6. ISQLMonitor: (Windows only). Mutex added to TMultilockGate to avoid race condition
260 >   between incrementing/decrementing the lock count and signalling the event.
261 >
262 > IBX Change Log  version           (1.3-2) Tue, 26 Jan 2016 14:39:54 +0000
263 >
264 > 1.3.2 was never formally released and only made available as beta copies.
265 >
266 > 1. DBControlGrid,IBDynamicGrid: Ignore down arrow and up arrow in TCustomMemo
267 >
268 > 2. IBDynamicGrid: Now deals correctly with a single column grid which has no indicator and autosize column
269 >
270 > 3. IBLookupComboEditBox: reset timer on each key press - avoids timer going off too early
271 >
272 > 4. IBDynamicGrid: Call event OnUpdateSortOrder even when aliasname not found in dataset
273 >   i.e. when it is a calculated field
274 >
275 > 5. IBDynamicGrid: Fix problem selecting a different row when expanded row at end of grid.
276 >   This problem was due to a race condition between recalculating row heights and
277 >   determining which row was selected by the mouse click. The row height calculation
278 >   is now deferred by an extra trip round the message loop allowing the row to
279 >   be always calculated on the current grid layout rather than risking it being
280 >   calculated on the grid layout after the expanded row has been shrunk.
281 >
282 > 6. IBLookupComboEditBox: avoid race condition between cm_killfocus and cm_exit on
283 >   Windows.
284 >
285 > 7. TIBStringField: Now has two new public properties: CharacterSetName: string and CharacterSetSize: integer;
286 >   These properties allow the (Firebird) character set name for the field and the max number of bytes per character
287 >   to be determined at runtime. See doc/readme.charactersets.html.
288 >
289 > 8. TIBWideStringField: This is a new field type with the same additional public properties as above and subclassed from
290 >   TWideStringField. This field type is used with the character size reported by Firebird is two. See doc/readme.charactersets.html.
291 >
292 > 9. TIBMemoField and TIBWideMemoField: new field types with the same additional public properties as above and subclassed from
293 >   TMemoField and TWideMemoField respectively. These field types are used with Blob subtype 1 and a characterset size of
294 >   1, 3 or 4 (TIBMemoField) or 2 (TIBWideMemoField). See doc/readme.charactersets.html.
295 >
296 >   Both also have a new published property "DisplayTextAsClassName". If false (default) the displaytext is generated
297 >   from the blob text by truncating the string to the displaywidth (in characters not bytes). A displaywidth of zero
298 >   implies no truncation.
299 >
300 > 10. IBLookupComboEditBox: Force autocomplete when EditingDone called and timer active.
301 >
302 > 11. IBDynamicGrid: Call DataSet.Append when entering edit mode and dataset empty and not in insert state
303 >   (avoids "Not in Edit Mode" error).
304 >
305 > 12. IBDynamicGrid: Correctly resize grid when one column width plus indicator.
306 >
307 > 13. IBDynamicGrid: Ensure Editor Panel has focus when shown - avoids Windows API calling
308 >    DBGrid.DoExit on subsequent mouse click (e.g. on child control such as a tabbed page control.
309 >
310 > 14. IBDynamicGrid: ignore up, down tab and return when editorpanel open and focus in a TCustomGrid descendent.
311 >
312 > 15. DBControlGrid: Stop flashing grid when dataset closed and then re-opened while DisabledControls
313 >
314 > 16. IBQuery: Bug fixed that prevented SQL being set programmatically once the Parser had been invoked.
315 >
316 > 17. IBCustomDataSet: On close, parser is now freed and Select SQL reverts to value before DataSet Opened.
317 >
318 > IBX Change Log  version        (1.3-1) Sat, 18 Jul 2015 13:30:50 +0100
319 >
320 > 1.   OnCloseUp Event Handler added to TDBLookupProperties
321 >
322 > 2.   IBDynamicGrid: Call to OnEditorPanelHide is now last editor hide action - avoids
323 >     problem with row size when exception is called.
324 >
325 > 3.   IBLookupComboEditBox: Force pending autocomplete on combobox exit.
326 >
327 > 4.   IBDynamicGrid and DBControlGrid: Keyhandler now ignores up, down, escape and return keys if
328 >     in a TCustomComboBox and ignores return key if in a TCustomMemo
329 >
330 > 5.   IBLookupComboEditBox: Ensure that KeyValue is set correctly when full text
331 >     keyed in i.e. when autocomplete not performed
332 >
333 > 6.   Cleanup of "Uses" clauses and add console mode support. IBX should now support
334 >     console mode applications with all LCL required functions (builtin dialogs and
335 >     cursor management) centralised in the  IBDialogs unit. As long as "IBDialogs" is
336 >     not included in your project, IBX should compile and link with a console mode program.
337 >     See consolemode example and its "readme"for further guidence. DO NOT add the ibexpress package to a
338 >     console mode application or the IDE will automatically assume that your
339 >     application is GUI based. Instead, you should include the ibexpressconsolemode package.
340 >
341 >     IMPORTANT NOTE: IBDialogs must be included in GUI applications in order
342 >     to use the built in dialogs and cursor management. IBDialogs is
343 >     included by default if "ibexpress" is in your project source's "uses" clause.
344 >     This should be the case for all projects created through the IDE. This is why
345 >     you do not want to add the ibexpress package to console mode applications. The
346 >     ibexpressconsolemode package has been created to allow console mode programs
347 >     to avoid adding LCL dependencies when using IBX, while still having the
348 >     unit search paths set up correctly.
349 >
350 >     Existing users should check to ensure that the "ibexpress" unit is included in
351 >     each project's source file (*.lpr).
352 >
353 >     You may find that in order for the IDE to recognise that ibexpressconsolemode
354 >     exists, you have to first open the package in the IDE and then close it. This
355 >     adds it to the most recently accessed packages list. To make it permanently
356 >     available, add the package name to lazarus' staticpackages.inc file.
357 >
358 >         Thanks to Julio Jiménez for suggesting support of console mode.
359 >
360 > 7.   SQL Parser can now accept quoted strings that include new lines
361 >
362 > 8.   IBDynamicGrid: Lookup Cell Editor - the cursor is now positioned at end
363 >     of text on start of edit. This is particularly useful when tabbing to a
364 >     column and then inserting text.
365 >
366 > 9.   New Examples provided for IB Services and ISQLMonitor.
367 >
368 > 10. Fix error when writing to blob streams that recorded only the last buffer
369 >    write in the blob stream. In most cases, this did not cause a problem as the
370 >    IB Blob Stream is written in a single write. However, with the TDBImage, write
371 >    of a graphic type prefix was lost which caused a problem when the image could
372 >        not be automatically recognised.
373 >
374 > 11. Improve generation of random cursor names in TIBSQL - avoid risk of "cursor
375 >    already open" errors due to random numbers used for the cursor name being identical.
376 >
377 > 12. IBTable: corrected error that could result in an "Index out of bounds" error
378 >    when opening the table and the Primary Key is the last or only column in the
379 >    table. Thanks to Rick Hoover for the fix.
380 >
381 > 13. Fix TIBDatabase initialisation of lc_ctype under unix. Set to "UTF8" instead
382 >    of "UTF-8", and update list of available database character sets. Existing
383 >    users should check the current lc_ctype setting in their applications.
384 >
385 > IBX Change Log  version  (1.2-4) Sat, 09 May 2015 12:38:29 +0100
386 >
387 > 1.  Firebird Services: avoid List Index error when opening a service with an
388 >    empty Params property.
389 >
390 > 2.  IBControls: Fix problem with new link mechanism introduced in 1.2.3.
391 >    Link now set up in Loaded method - avoids occasional failure to apply
392 >    SQL markup on initial open.
393 >
394 > 3.  "Employees" example performance improvements when scrolling.
395 >
396 > 4.  DBControlGrid: Correctly handle edit panel removal when panel is child control of a
397 >    TFrame. Force recaching of selected frame to avoid GTK race (results in a
398 >    random image cached).
399 >
400 > 5.  DBControlGrid: Should now react to changes in panel height at run time.
401 >
402 > 6.  IBDynamicGrid: Redraws rows below on panel editor hide - avoids blank space at end of grid  
403 >    even when further rows exist.
404 >
405 > 7.  DBControlGrid: DefaultRowHeight is no longer a published property as it should
406 >    always be derived from panel height and setting this property can cause confusion.
407 >    Note for existing projects: to avoid a missing property error at run time,
408 >    each form using the DBControlGrid must be opened, updated and saved in the IDE
409 >    in order to remove the property value from the lfm.
410 >
411 >
412 > IBX Change Log  version (1.2-3) Tue, 14 Apr 2015 14:11:17 +0100
413 >
414 > 1.  TIBStoredProc. Prepare now called by ParamByName to avoid need to always
415 >    call Prepare before setting parameter values.
416 >
417 > 2.  Error message on ParamByName (all cases) not found now includes name of missing parameter.
418 >
419 > 3.  Code tidyup and more robust handling of dsql information result vector.
420 >
421 > 4.  Support for centralised handling of transaction status changes. TIBTransaction
422 >    has been given additional events "AfterEdit", "AfterInsert", "AfterDelete", "AfterPost"
423 >    and "AfterExecQuery". The first three are called after the same event is called
424 >    for an IBCustomDataSet descendent using the Transaction. The fourth is called
425 >    after a call to TIBSQL.ExecQuery, again using this transaction. These new events
426 >    enable monitoring of transaction status changes for a given transaction to be
427 >    handled in a single place. For example, when a change to the dataset occurs
428 >    an indicator can be set that shows the user that in order to save changes,
429 >    the transaction should be committed.  Rather than doing this per dataset, this
430 >    can now be done per transaction.
431 >
432 > 5.  TDataSet.CheckBrowseMode automatically posts changes to the current row when
433 >    the dataset is scrolled. However, any changes to the current row are, by default,
434 >    discarded when the dataset is closed. TIBDataSet, TIBQuery and TIBTable now
435 >    have a new property "DataSetCloseAction" that adds automatic posting of changes
436 >    on dataset close. If this property is set to dcDiscardChanges (default) then the
437 >    behaviour is unchanged from previous versions. if the value is set to dcSaveChanges
438 >    then IBX will attempt to post any unsaved changes before the dataset is closed
439 >    (and after the BeforeClose event handler is called). The exception is when the
440 >    dataset is being closed as a result of a transaction rollback. In this case,
441 >    no action is taken and any unsaved  changes are discarded. This avoids both
442 >    unnecessary overhead and the risk that a validation error may occur in the Post
443 >    raising an exception and thereby preventing a rollback.
444 >
445 > 6.  String Field sizes and Display Widths should now be correct for multi-byte character sets.
446 >    In earlier versions, the Display Width was set to the maximum byte width rather than the character
447 >    width. Display Widths are now corrected by dividing by the max byte width per character.
448 >    For UTF8 character sets, the byte width is four and hence the Display Width will be
449 >    the byte width divided by 4. The byte width of each character set is determined
450 >    dynamically when the database connection is estabished from the RDB$CHARACTER_SETS
451 >    system table. (see also http://bugs.freepascal.org/view.php?id=27766).
452 >
453 > 7.  SQLParser will now correctly parse SQL Text which contains ':' within quoted string.
454 >
455 > 8.  IBLookupComboEditBox: List should now always be restored to full list when the
456 >    control loses focus. Default Key press default interval reduced to 200ms.
457 >
458 > 9.  DBControlGrid: Ensure that selection is changed to newly appended row, even
459 >    when dataset rows are less than visible rows.
460 >
461 > 10. IBDynamicGrid: Editor Panel is not shown on indicator click if Datasource
462 >    does not exist or DataSet is empty. More responsive on dataset open. New event
463 >    OnRestorePosition. Column sort disabled if no header row.
464 >
465 > 11. IBTreeView: improved handling of response to "Add Node". Avoid scrolling dataset
466 >    while dataset state is dsInsert. Avoids posting errors.
467 >
468 > 12. IBControls: New mechanism for distributing UpdateSQL and UpdateParams events. This is to
469 >    avoid conflict with DisableControls/EnableControls with Master/Detail linked tables.
470 >
471 > 13. IBLookupComboEditBox: Now avoids SQL Errors when combo box text contains single quotes.
472 >
473 > 14. TIBDataSet and TIBQuery: new Event - OnValidatePost. This event has been introduced
474 >    to solve a specific problem. That is when the dataset cursor is moved (e.g. by
475 >    a grid mouse click and the current row is being edited or inserted. In this case, TDataset
476 >    always "posts" the current record regardless or whether or not it may be more appropriate
477 >    to cancel any changes; the post occurs before the "BeforeScroll" event fires due to the way the
478 >    "MoveBy" function is implemented by TDataSet. The OnValidatePost event is called
479 >    as the first action of the "Post" method and allows the handler to convert the Post
480 >    into a Cancel if that is the appropriate action on moving to a different row. This is
481 >    achieved by returning with "CancelPost" argument set to true. Note that an exception could be
482 >    raised here, but it may still be more appropriate to validate a post and signal
483 >    a problem in the "BeforePost" event handler. See readme.automaticposts.xhtml)
484 >
485 > 15. On Unix derived systems, the Firebird library name can now be given as a colon
486 >    separated list. Each library name on the list is tried in turn, in left to right
487 >    order with the first found being used as the firebird library. By default, on Linux,
488 >    the library name list is 'libfbembed.so.2.5:libfbembed.so.2.1:libfbclient.so.2'. This can be
489 >    overidden by the FBLIB environment variable or the OnGetLibraryName function.
490 >
491 >    Note: when using the libfbembed.so, if you prefix the database name with "localhost:"
492 >    then it will still attempt to access the database via the Firebird Server and will
493 >    require a username and password. If only the pathname is given, then the username
494 >    and password should be omitted and the unix file permissions are used to grant
495 >    access.
496 >
497 > IBX Change Log  version  (1.2-2) Sat, 14 Mar 2015 11:35:04 +0000
498 >
499 > 1.  A new IBControl - TDBControlGrid has been added. TDBControlGrid a lookalike
500 >    rather than a clone for the Delphi TDBCrtlGrid. TDBControlGrid is a single column grid
501 >    that replicates a TWinControl - typically a TPanel or a TFrame in each row. Each row
502 >    corresponds to a row of the linked DataSource. Any data aware control on the
503 >    replicated (e.g.) TPanel will then appear to have the appropriate value for the row.
504 >
505 > 2. As suggested by Julio Jiménez, a new property "SQLHourGlass" has been added to TIBDatabase.
506 >   When set to false (default true), the Hour Glass cursor is supcpressed and no cursor change
507 >   takes place during database access. This may be useful when there are performance issues with
508 >   the change of cursor. Setting the property to false suppresses the change of cursor.
509 >
510 > 3. As suggested by Julio Jiménez, a new property "AutoCommit" has been added to TIBDataSet, TIBQuery
511 >   and TIBTable. When set to acCommitRetaining (Default: acDisabled), a call is made to
512 >   Transaction.CommitRetaining immediately after every Post or Delete. This has the effect of
513 >   making all changes permanent immediately rather than when the transaction is explicitly
514 >   committed.
515 >
516 > 4. Experimental support for the Firebird 3 SQL_BOOLEAN type has been added while still
517 >   using the legacy Firebird API. Thanks to Gabor Boros for helping to test this feature.
518 >
519 > IBX Change Log  version      (1.2-1) Fri, 13 Mar 2015 11:14:15 +0000
520 >
521 > Development version only.
522 >
523 > IBX Change Log  version   (1.2-0) Thu, 26 Feb 2015 10:34:04 +0000
524 >
525 > 1. An internal select SQL Parser is now available for TIBCustomDataset descendents.
526 >   This is typically used during an "OnBeforeOpen" event handler to manipulate the
527 >   "Where" and "Having" clauses to implement user specified filters of arbitrary
528 >   complexity.
529 >
530 > 2. A new Component Palette entry "Firebird Data Controls" is now available. This has
531 >   three new data aware controls dependent on IBX and which make use of the SQL Parser.
532 >   These are:
533 >
534 >   - TIBLookupComboEditBox
535 >   - TIBDynamicGrid
536 >   - TIBTreeview
537 >
538 >   TIBLookupComboEditBox is a TDBLookupComboBox descendent that implements "autocomplete"
539 >   of typed in text and "autoinsert" of new entries. Autocomplete uses SQL manipulation
540 >   to revise the available list and restrict it to items that are prefixed by the
541 >   typed text (either case sensitive or case insensitive). Autoinsert allows a
542 >   newly typed entry to be added to the list dataset and included in the available
543 >   list items.
544 >
545 >   TIBDynamicGrid is a TDBGrid descendent that provides for:
546 >   - automatic resizing of selected columns to fill the available row length
547 >   - automatic positioning and sizing of a "totals" control, typically at the
548 >     column footer, on a per column basis.
549 >   - DataSet resorting on header row click, sorting the dataset by the selected column.
550 >     A second click on the same header cell reversed the sort order.
551 >   - Support for a "Panel Editor". That is on clicking the indicator column, the row
552 >     is automatically expanded and a panel superimposed on it. The panel can have any
553 >     number of child controls, typically data aware controls with the same datasource
554 >     as the grid allowing for editing of additional fields and more complex editors.
555 >   - Reselection of the same row following resorting.
556 >   - A new cell editor that provides the same functionality as TIBLookupComboEditBox.
557 >     Its properties are specified on a per column basis and allows for one or more
558 >     columns to have their values selected from a list provided by a dataset.
559 >     Autocomplete and autoinsert are also available. The existing picklist editor
560 >     is unaffected by the extension.
561 >
562 >   TIBTreeView is a data aware TCustomTreeView.
563 >
564 > 3. When getting a field value using FieldByName.AsVariant, an SQL_INT64 with a
565 >   zero scale will no longer return an error. An Int64 will be returned instead.
566 >
567 > 4. TIBTransaction now has events for Before and After Transaction End and a new function
568 >   "GetEndAction" allowing the EndAction to be accessed by these event handlers.
569 >
570 > 5. TIBQuery can now handle correctly queries which contain the same keyword parameter
571 >   repeated multiple times.
572 >
573 > 6. TIBUpdateSQL will no longer return an error when "RowsAffected" is <> 1. This error
574 >   check used to get in the way of using Stored Procedures, and "Update or Insert"
575 >   statements.
576 >
577 > 7. Insert, Modify and Delete property Editors now support Query Generation from
578 >   Stored Procedures.
579 >
580 > 8. Three new examples illustrate the use of the new IB Controls
581 >
582 >
583 > IBX Change Log  version  (1.1-0) Mon, 07 Jul 2014 14:01:07 +0100
584 >
585 > 1. TIBXSQLVAR code clean up and optimisation to improve client side "prepare" and parameter
586 >   setting performance. See "readme.field+param.names in the doc folder.(Thanks to
587 >   Gabor Boros for reporting this problem and for testing the improvements).
588 >
589 > 2. IBX can now support dialect 3 quoted column names that contain spaces and which differ only in their case.
590 >   See readme.field+param.names in the doc folder.
591 >
592 > 3. IBX SQL Editors will now automatically add double quotes around column names when the database
593 >   dialect is "3" and the column name contains spaces or is a Firebird 2.5 SQL Reserved Word.
594 >
595 > 4. Param Type LargeInt now supported in TIBQuery and TIBStoredProc
596 >
597 > 5. TIBSQL.ExecQuery retry on failure removed to avoid problems with "at most once"
598 >   actions.
599 >
600 > 6. TIBTransaction.SetDefaultDatabase uses SetObjectProp instead of mis-using SetOrdProp (with
601 >   thanks to Yuriy Kopnin for pointing this out).
602 >
603 > 7. GenerateParamName is now a published property of TIBSQL, TIBQuery and TIBDataSet.
604 >
605 > 8. varWord, varShortInt and varInt64 added to TIBXSQLVAR.SetAsVariant and hence now available as variant types
606 >   for both fields and parameter setting.
607 >
608 > 9. Changes to the Select SQL in an IBCustomDataset descendent should now be
609 >   visible in the Fields Editor immediately afterwards - rather than only after cycling the "active" property.
610 >
611 > 10. TIBSQL SQL editor will operate correctly and not report an SQL syntax error on SQL test,
612 >    when DSQL ('?') parameter placeholders are used and the TIBSQL.GenerateParamNames property is set to true.
613 >
614 > 11. TIBTable now has a property editor for "MasterFields"
615 >
616 > 12. SQL Property Editors now include a checkbox "Allow DSQL Placeholder". This corresponds to the
617 >    GenerateParamNames property and should be set when using DSQL (i.e. '?') style parameters.
618 >
619 > 13. The IBTransaction editor now has a radio button ("Unspecified") which is set when the combination
620 >    of settings is unrecognised. Selecting this radio button has no effect on the settings.
621 >  
622 >
623 > IBX Change Log  version                 (1.0-5) Sat, 28 Dec 2013 19:22:23 +0000
624 >
625 > 1. TBookmark change conditional compile changed to >= 2.7.0 to match revised availability of change.
626 >
627 > IBX Change Log  version          (1.0-4) Thu, 28 Feb 2013 16:56:13 +0000
628 >
629 > 1. In a TIBCustomDataset descendent, a generator now only sets the value when
630 >   it is null. This allows for alternative user defined setting of the generator
631 >
632 >   Many thanks to Julio Jiménez for this fix
633 >
634 > 2. An Error Dialog is now displayed in the Lazarus IDE if IBX cannot find the Firebird Library
635 >   and suggests that the user may have forgotten to install it.
636 >
637 > IBX Change Log  version         (1.0-3) Thu, 22 Nov 2012 22:53:39 +0000
638 >
639 > 1. Conditional compilation used to limit registration of TIntegerField to
640 >   Lazarus versions less than 1.1
641 >
642 > 2. When a database connection is created, character set is now by default set
643 >   to UTF8 (Unix) or to the current Windows code page (Windows) if in the range
644 >   1250 to 1254.
645 >
646 >
647 > IBX Change Log  version     (1.0-2) Tue, 09 Oct 2012 09:10:30 +0100
648 >
649 > 1. TBookmark change conditional compile changed to > 2.6.2 to match expected availability of change.
650 >
651 >
652 > IBX Change Log  version    (1.0-1) Sun, 05 Aug 2012 20:00:04 +0100
653  
654   1. In IBCustomDataset. Changed CurBookmark from string to TBookmark for compiler versions > 2.6.0
655     Necessary because of TBookmark type and TDataSet.Bookmark property change in fpc 2.7.1

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