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Revision 21 by tony, Thu Feb 26 10:33:34 2015 UTC vs.
Revision 107 by tony, Thu Jan 18 14:37:40 2018 UTC

-<
+IBX Change Log  version                                      (1.2-0) Thu, 26 Feb 2015 10:34:04 +0000
->
+IBX Change Log  version                                    (2.2-0) Mon, 15 Jan 2018 23:43:19 +0000
->
->
+. IBExtract: Identity columns - add additional check for null column for generator name.
->
->
+. IBCustomDataSet: Insert and Modify (Update) queries now recognise and process SQL RETURNING clauses.
->
+   The main use for this is for Firebird 3 Identity columns (see IBXDocumentation 6.6.8 for further
->
+   information). However, this is also a very useful mechanism for returning updated computed by
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+   column values. Values returned as a result of executing an Insert or Update statement
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+   replace existing values in the current row for each corresponding column.
->
->
+   Previously, if a dataset's select query included read only (computed by) fields then
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+   an automatic row refresh was performed after an insert or update query had been processed,
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+   irrespective of the setting of the "ForcedUpdates" property. This has changed such
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+   that an automatic refresh is no longer performed if an insert or update query contains
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+   a returning clause that updates one or more fields on the current row. A full row
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+   refresh is only performed if (a) ForcedRefresh is true or (b) the query does not return any
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+   field values and the select query contains read only fields. Use of Insert/update
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+   returning should be significantly more efficient than excuting a refresh query.
->
->
+   This behaviour change is intended to be backwards compatible and there should be no need to change
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+   existing programs, other than to improve performance by using the new capability.
->
->
+. TIBTable: generated Insert and Update SQL now include a RETURNING clause for
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+   any Computed By or Identity Columns. The IBTables example has been updated to
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+   illustrate the computation of the employee Full Name on update.
->
->
+. TIBTable: The GeneratorField property is now published.
->
->
+. The InsertSQL property editor now shows Firebird 3 Identity columns separate from the Field List.
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+   When InsertSQL is generated, the Identity columns are not included in the list of values to
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+   be inserted. A RETURNING clause is added to the insert statement to return the value of
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+   each Identity column after the insert is executed.
->
->
+. The Modify Property Editor now generates Update SQL with Computed By fields in Update..Returning clause.
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+   Similarly Insert Property Editor now generates Insert SQL with Computed By fields in
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+   Insert..Returning clause.
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->
+. TIBGenerator: small performance improvement by not preparing query each time
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+   a new value is generated.
->
->
+. TIBSQL: Free resources when transaction changed - ensures new transaction is used.
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->
+. Property editors will now sync table name to a System Table when "Include System
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+   Tables" is selected and the query is for a System Table.
->
->
+. Minor Performance improvement to handling of Date/Time types in IBX datasets. Field
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+    values are no longer converted to milliseconds from TDateTime and then back again
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+    to TDateTime (the conversion to milliseconds is the default TDataset approach).
->
->
+. Property Editors handling of Stored Procedures.
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+    * Select and Refresh: only show a list of stored procedures that return multiple rows (proc type 1) and
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+      which have a non-empty list of output parameters (i.e. stored procedures that may be used in a select
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+      query).
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+    * Modify and Insert: only show a list of stored procedures that return at most a singleton row (proc type 2).
->
->
+. IBStoredProc: Now supports Firebird 3 Package Names. A new published property PackageName
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+    can be used to select a package. If non-empty, the stored procedure name is
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+    expected to be a stored procedure defined in the specified package and the
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+    generated SQL will be as required for a stored procedure located in a package.
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->
+. Select, Refresh, Insert, Modify, Delete and TIBSQL SQL Property Editors now include
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+    a "Package Name" drop down box to allow selection of a Firebird 3 Package from
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+    which a stored procedure can be selected. With no package name selected, non-package
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+    stored procedures are listed.
->
->
->
+IBX Change Log  version                            (2.1-0) Fri, 15 Dec 2017 12:20:11 +0000
->
->
+. IBCustomDataset: Minor change of PChar to PByte for compatibility with fbintf
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+   changes.
->
->
+. IBCustomDataset: Fixed use of incorrect datasize in TIBStringField.SetAsString.
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+   Bug could result in truncated multi-byte character set values.
->
->
+. Changes consequential on moving fbintf character set utility functions from
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+   IFirebirdAPI to IAttachment.
->
->
+. Avoid "Object is nil" error when opening a database with DefaultSystemCodePage = true
->
->
+. IBLookupComboEditBox: avoid race condition when autocompleting text that occasionally
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+   results in autocomplete ignoring prefix text.
->
->
+. IBLookupComboEditBox: Ensure that cursor is not reset to start of text when
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+   entering a new name into the text box.
->
->
+. IBCustomDataset: ensure that TIBStringField uses the field size reported by
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+   Firebird rather than recomputing it.
->
->
+. Property Editor positioning tidy up: All IBX Property editors should now be
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+   screen centre. Previously some were "poDesigned" which may be inappropriate
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+   for multi monitor desktops.
->
->
+. TIBTreeView.FindNode: protect against error if zero length path or empty tree node.
->
->
+. TIBTransaction: On Force Disconnect do not raise an exception when problem ending
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+    a transaction and always reset the object.
->
->
+. TIBQuery tidyup: remove unnecessary call to GetAffectedRows.
->
->
+. TIBXScript: Allow for override of database filename in Create Database statements.
->
->
+. IBLocaldb: Support initialisation of the database from an SQL script in addition
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+    to a gbak format archive.
->
->
+. IBLocaldb: fix problem that stopped the OnSharedDataDir event from being recognised.
->
->
+. IBLocaldb: Drop database if error creating an empty database.
->
->
+. TIBTreeView: improve performance when selecting node - avoid refreshing dataset
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+    unless selected node not in current dataset.
->
->
+. IBServices: SetDBParams method moved from TCustomIBLocalDBSupport (in IBLocalDB package)
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+    to TIBCustomService, and IBlocalDB code tidy up.
->
->
+. IBTreeView: Initialise TIBTreeNode KeyValue to null to avoid unpredictable
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+    behaviour due to uninitialised variable.
->
->
+. IBServices: Correct encoding of isc_spb_prp_write_mode in TIBConfigService from
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+    integer to byte. Ditto isc_spb_prp_reserve_space and isc_spb_prp_access_mode.
->
->
+. IBSQL: When Database changed ensure that all resources are freed.
->
->
+. IBCustomDataset: When database changed ensure that queries an unprepared.
->
->
+. SQL Property Editors now use SynEdit with SQL Highlighter. New features include:
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+    * Line Wrap on SQL Token boundaries (on user command)
->
+    * auto-complete table names in drop down list of table names
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+    * Double click on tablename or field name adds to SQL text
->
->
+. IBDataOutput: print statistics using float (%f) format instead of decimal (%d).
->
->
+. IBTreeView: Call to FindNode: param type change from "array of Variant" to
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+    TVariantArray. Seems to avoid memory corruption in Windows (probably a
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+    workaround for a problem in fpc 3.0.4 win64).
->
->
+. IBDatabaseInfo: Code tidy up. Add check for database not assigned or not open.
->
->
+. IBDatabaseInfo: Remove memory leak when accessing database operation counts.
->
->
+IBX Change Log  version                   (2.0-2) Fri, 24 Feb 2017 12:17:53 +0000
->
->
+. TIBDatabase.CreateDatabase: extract full DB Name from SQL using reg ex in order to
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+   include remote system name.
->
->
+. TIBExtract: No longer include comment header and COMMIT statement for empty
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+   tables when data included in output.
->
->
+. Profiling: IBSQL now has conditional compilation flags to enable query performance
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+   and timing information to be written to stdout. This may be used to locate
->
+   performance bottlenecks.
->
->
+. SQLParser: only call "OnChanging" event handler when value is different.
->
->
+. IBDynamicGrid: Update handling of navigation keys for a TDateEdit
->
->
+. IBCustomDataset: Set internalunprepared flag when transaction ends. This ensures
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+   that BindFields is called when the query is next activated. Avoids FieldName
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+   not found error.
->
->
+. IBUpdate: This is a new IBX component similar to TIBUpdateSQL. It is more general
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+   purpose and allows the programmer to define any action they want for Update, Insert
->
+   or Delete. This may be complex SQL (similar to a Trigger), application specific
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+   filtering of updates, or use of statements such as Grant or Revoke instead of
->
+   normal DML. See User Manual for more information.
->
->
+IBX Change Log  version                  (2.0-1) Mon, 09 Jan 2017 15:31:49 +0000
->
->
+. TIBEvents: Fix uninitialised variable that could result in lost events.
->
->
+. TIBExtract: Added support for FB3 "USAGE" privilege.
->
->
+. TIBExtract: data formatted as Charset set "octets" is now output using
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+   hexadecimal notation.
->
->
+. TIBExtract: Binary Blobs and array data can now be embedded in INSERT statements
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+   using a simple XML format.
->
->
+. TIBExtract: extract of individual Triggers and Stored Procedures can now include
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+   grants to these objects.
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->
+. TIBExtract: Stored Procedures and Views output in dependency order to avoid
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+   dependency problems restoring complex databases.
->
->
+. TIBXScript: This component has been restructured to allow for the processing of
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+   embedded XML in INSERT statements and to support interactive sources in addition
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+   to non-interactive data sources such as files.
->
->
+. TIBXScript: CREATE DATABASE, DROP DATABASE, CONNECT statements are now supported.
->
->
+. TIBXScript: ISQL compatiable Set statements are now supported:
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+   SET SQL DIALECT
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+   SET TERM
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+   SET AUTODDL
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+   SET BAIL
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+   SET ECHO
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+   SET COUNT
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+   SET STATS
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+   SET NAMES <character set>
->
->
+. IBVersion unit added to hold current IBX Version Number information.
->
->
+. TIBExtract: Use character rather than byte length for VarChar procedure arguments.,
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+    and domain definitions.
->
->
+. TIBExtract: Triggers now use SQL2003 syntax and database and transaction triggers
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+    fully supported.
->
->
+. TIBExtract: when a database dump includes data, the generator values are now also set.
->
->
+: IBSQLEdit: Unit LCLPlatformDef added to uses clauses for lazarus 1.7 and later.
->
->
+IBX Change Log  version     (2.0-0) Tue, 06 Dec 2016 10:33:44 +0000
->
->
+See also doc/IBX4LazarusGuide.pdf for important information on
->
+upgrading to IBX2.
->
->
+. Size property of TIBStringField is now the width in characters of the field
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+   and not the byte length. This applies only to multi-byte character sets such
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+   as UTF8. The original approach aligned with TStringField. However, the TStringField
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+   code is not recognised as a bug and hence this change to align the behaviour.
->
+   The TStringField change is expected in fpc 3.2.0.
->
->
+. A new property AutoFieldSize: boolean has been added to TIBStringField. When
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+   true (default) then Size property value saved in the lfm is ignored. Size is
->
+   always set from the dynamic information read from the database. It is unclear
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+   why anyone would want to override this and set Size to false.
->
->
+. ibxscript: should now handle correctly a Case..End statement within a procedure
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+   block.
->
->
+. IBDatabase: new property - CreateIfNotExists. If true and database does not
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+   exist when an attempt is made to connect to it (run time only) then an attempt
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+   is made to create the database.
->
->
+. IBDatabase: new event - OnCreateDatabase. This event is called after a database
->
+   has been successfully created as a result of a call to CreateDatabase or when
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+   creating a database after it was found not to exist.
->
->
+.  DBControlGrid: a race condition could result in the wrong row image being
->
+    written to the cache. This has been avoided by a trip round the message
->
+    loop before rendering the row image.
->
->
+.  DBControlGrid: It is strongly recommended not to open the source DataSet for
->
+    a DBControlGrid during a Form's "OnShow" event handler. Under GTK2 this is
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+    known to risk corrupt rendering of row images when the control is first
->
+    displayed. If necessary use "Application.QueueAsyncCall" to delay opening
->
+    of the dataset (see DBControlGrid examples) until the Form's Window has been created.
->
->
+.  DBControlGrid & IBDynamicGrid: Navigation keys should now work correctly with
->
+    a TDateEdit control located on an editor panel.
->
->
+.  TIBExtract: brought up-to-date plus many bug fixes.
->
->
+. DBControlGrid: Removed memory leak when updating rows.
->
->
+. TIBCMLocalDBSupport: fixed invalid free on upgrade.
->
->
+IBX Change Log  version                                           (1.4-3) Thu, 22 Sep 2016 18:10:15 +0100
->
->
+. IBCustomDataset: When calling SetCodePage, no longer request transliteration
->
+   when target codepage is CP_NONE. This is a workaround for
->
+   http://bugs.freepascal.org/view.php?id=30622.
->
->
+. DBLog option removed from TIBStatisticalService - not supported by server
->
+   since Firebird 1.5.
->
->
+. ibxscript: An error is no longer generated for "on commit preserve rows" or
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+   similar.
->
->
+. IBCodePage: updated mapping between codepages and character id.
->
->
+. ftWideString and ftWideMemo withdrawn. There is no UTF16 character set in
->
+   Firebird. Character sets with a char width of two are not UTF16.
->
->
+. Strings received from the database are now always transliterated into UTF8
->
+   regardless of the database character set or connection character set. This
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+   is for compatibility with the LCL.
->
->
+IBX Change Log  version  (1.4-2) Thu, 22 Sep 2016 15:25:27 +0100
->
->
+. IBBlob: Defer reading of blob until read method called. This avoids having to
->
+   read in an entire blob just to get the size of the blob. General performance
->
+   improvement when opening datasets containing blobs.
->
->
+. Clearing a  Blob now sets the corresponding field's modified flag.
->
->
+. IBLookupCombo: When not performing auto-complete, original query sort order
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+   is now used.
->
->
+. IBDynamicGrid: Add OnSelectEditor event. Allows editor panel to be dynamically
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+   determined.
->
->
+. IBDynamicGrid: Recompute column widths after dataset closed and re-opened.
->
->
+. IBLookupCombo: LazUTF8 added to uses clause to avoid compilation problems post
->
+   lazarus 1.6.0
->
->
+. IBControls. Removed "runtime" from list of paths to avoid "multiple packages"
->
+   compilation error.
->
->
+IBX Change Log  version                                 (1.4-1) Tue, 17 May 2016 09:14:51 +0100
->
->
+. No character set specified for connection: when a text blob is retrieved, the
->
+  character set is determined by looking up the native character set using then
->
+  Firebird API. Otherwise a text mode blob is assumed to have the same character
->
+  set as the connection.
->
->
+. TIBGUIInterface: this is an internal interface. Minor type changes to allow
->
+   for Login Dialog returing a change to the database path.
->
->
+. Design Time Database and Server login Dialogs now allow the Database Name/Server Name
->
+   to be changed from that given in the TIBDatabase/TIBServer component and for the
->
+   entered value to be saved on a project specific basis (design time only).
->
->
+. IBDynamicGrid: TDBLookupCellEditor now compares its DataFieldName with the
->
+   column fieldname. If they are the same then it is acts as a look up for the KeyValue
->
+   Otherwise, it sets the column text to the selected ListField Value.
->
->
+. IBDynamicGrid: Only visible columns are now taken into account When recalculating
->
+   column width.
->
->
+. IBLookupComboEditBox: Fix error with autocomplete query when a RelationName is given
->
+   and a case insensitive search is requested.
->
->
+. IBDynamicGrid: No longer ignores notifications removing Column Totals controls
->
+   or column ListSource.
->
->
+. IBQuery: no longer performs unnecessary refresh of SQL Text (and hence avoids an
->
+   unprepare) when closing and the text has not changed.
->
->
+. IBSQL: Base the cursor name on a GUID instead of a hexstr version of the class pointer.
->
+   Less likely to cause a cursor re-use error on Windows.
->
->
+.SV5IPC: include workaround for OSX. FPC 3.0.0 has broken ipc module for darwin.
->
+   Expected to be fixed in 3.0.2. Hence workaround only applies to 3.0.0.
->
->
+. TIBTreeView: Guard against nil destination on record changed
->
->
+. AnsiString Code page support: TIBStringField.AsString and TIBMemoField.AsString now return a
->
+    string type with the code page set to reflect the returned field encoding after
->
+    Firebird driver transliteration, if any.  FPC 3.0.0 onwards only. Behaviour unchanged for
->
+    earlier versions.
->
->
+. AnsiString Code page support: Assigning to TIBStringField.AsString and TIBMemoField.AsString
->
+    will now result in transliteration to the code page specified for the Firebird driver
->
+    if the assigned string has a different code page. FPC 3.0.0 onwards only.
->
->
+. TIBDatabase: new property UseDefaultSystemCodePage. When set any lc_ctype parameter
->
+    is ignored and the lc_ctype value, when the database is opened, is set to align with
->
+    the DefaultSystemCodePage (FPC 3.0.0 onwards). Normally, this is what you want and should ensure
->
+    platform independence. Note: this applies to FPC 3.0.0 and earlier versions. Pre FPC
->
+.0.0, when this property is true, the lc_ctype is UTF8 except under windows when
->
+    the GETACP is used to determine the Windows code page.
->
->
+. TIBDatabase: new property DefaultCharSetName. This is the Firebird character set
->
+    name used as the lc_ctype when the database was opened. Only valid while the
->
+    Database is connected.
->
->
+. TIBDatabase: new property DefaultCodePage (FPC >=3.0.0 only). This is the codepage
->
+    id that corresponds to the DefaultCharSetName.
->
->
+IBX Change Log  version                          (1.4-0) Mon, 15 Feb 2016 14:44:24 +0000
->
->
+. Unix: If Firebird Embedded Server shared object is loaded and a local database
->
+   path is given and database attach fails due to access permission issues on the
->
+   temp directory or security database, then the attach is retried with "localhost:"
->
+   prefixing the databasename. This should avoid problems when the database has to
->
+   be accessed by a local (e.g. classic) server and libfbembed is used.
->
->
+. Windows: revised search order for Firebird DLL:
->
+     i.   The Firebird Embedded Server in the application Directory.
->
+     ii.  If the FIREBIRD environment variable is set then the directory this
->
+          points to is searched for the FB Client DLL and then then underlying
->
+          "bin" directory.
->
+     iii. Registry Key HKEY_LOCAL_MACHINE\SOFTWARE\Firebird Project\Firebird Server\Instances
->
+          is used to locate the Firebird installation directory and the underlying
->
+          "bin" directory is searched for the FB Client DLL.
->
+     iv.  The Default installation directories C:\Program Files\Firebird\Firebird_2_x
->
+          are searched for the FB Client DLL.
->
+     v.   The PATH Environment variable is used to search for the FB Client DLL.
->
+     vi.  Finally the  PATH Environment variable is used to search for IBASE.DLL.
->
->
+. New Component: TIBXScript. This is an ISQL compatible SQL script execution engine.
->
+   See doc/readme.scriptengine and example applications.
->
->
+. New Component: TIBlocalDBSupport. This is a TIBDatabase support component intended to
->
+   simplify the use of the embedded firebird server on both Linux and Windows platforms.
->
+   See dpc/readme.localdatabase and example applications.
->
->
+. IBDynamicGrid: Reordering on column header click should now also work for
->
+   dynamic columns.
->
->
+. ISQLMonitor: (Windows only). Mutex added to TMultilockGate to avoid race condition
->
+   between incrementing/decrementing the lock count and signalling the event.
->
->
+IBX Change Log  version           (1.3-2) Tue, 26 Jan 2016 14:39:54 +0000
->
->
+.3.2 was never formally released and only made available as beta copies.
->
->
+. DBControlGrid,IBDynamicGrid: Ignore down arrow and up arrow in TCustomMemo
->
->
+. IBDynamicGrid: Now deals correctly with a single column grid which has no indicator and autosize column
->
->
+. IBLookupComboEditBox: reset timer on each key press - avoids timer going off too early
->
->
+. IBDynamicGrid: Call event OnUpdateSortOrder even when aliasname not found in dataset
->
+   i.e. when it is a calculated field
->
->
+. IBDynamicGrid: Fix problem selecting a different row when expanded row at end of grid.
->
+   This problem was due to a race condition between recalculating row heights and
->
+   determining which row was selected by the mouse click. The row height calculation
->
+   is now deferred by an extra trip round the message loop allowing the row to
->
+   be always calculated on the current grid layout rather than risking it being
->
+   calculated on the grid layout after the expanded row has been shrunk.
->
->
+. IBLookupComboEditBox: avoid race condition between cm_killfocus and cm_exit on
->
+   Windows.
->
->
+. TIBStringField: Now has two new public properties: CharacterSetName: string and CharacterSetSize: integer;
->
+   These properties allow the (Firebird) character set name for the field and the max number of bytes per character
->
+   to be determined at runtime. See doc/readme.charactersets.html.
->
->
+. TIBWideStringField: This is a new field type with the same additional public properties as above and subclassed from
->
+   TWideStringField. This field type is used with the character size reported by Firebird is two. See doc/readme.charactersets.html.
->
->
+. TIBMemoField and TIBWideMemoField: new field types with the same additional public properties as above and subclassed from
->
+   TMemoField and TWideMemoField respectively. These field types are used with Blob subtype 1 and a characterset size of
->
+, 3 or 4 (TIBMemoField) or 2 (TIBWideMemoField). See doc/readme.charactersets.html.
->
->
+   Both also have a new published property "DisplayTextAsClassName". If false (default) the displaytext is generated
->
+   from the blob text by truncating the string to the displaywidth (in characters not bytes). A displaywidth of zero
->
+   implies no truncation.
->
->
+. IBLookupComboEditBox: Force autocomplete when EditingDone called and timer active.
->
->
+. IBDynamicGrid: Call DataSet.Append when entering edit mode and dataset empty and not in insert state
->
+   (avoids "Not in Edit Mode" error).
->
->
+. IBDynamicGrid: Correctly resize grid when one column width plus indicator.
->
->
+. IBDynamicGrid: Ensure Editor Panel has focus when shown - avoids Windows API calling
->
+    DBGrid.DoExit on subsequent mouse click (e.g. on child control such as a tabbed page control.
->
->
+. IBDynamicGrid: ignore up, down tab and return when editorpanel open and focus in a TCustomGrid descendent.
->
->
+. DBControlGrid: Stop flashing grid when dataset closed and then re-opened while DisabledControls
->
->
+. IBQuery: Bug fixed that prevented SQL being set programmatically once the Parser had been invoked.
->
->
+. IBCustomDataSet: On close, parser is now freed and Select SQL reverts to value before DataSet Opened.
->
->
+IBX Change Log  version        (1.3-1) Sat, 18 Jul 2015 13:30:50 +0100
->
->
+.   OnCloseUp Event Handler added to TDBLookupProperties
->
->
+.   IBDynamicGrid: Call to OnEditorPanelHide is now last editor hide action - avoids
->
+     problem with row size when exception is called.
->
->
+.   IBLookupComboEditBox: Force pending autocomplete on combobox exit.
->
->
+.   IBDynamicGrid and DBControlGrid: Keyhandler now ignores up, down, escape and return keys if
->
+     in a TCustomComboBox and ignores return key if in a TCustomMemo
->
->
+.   IBLookupComboEditBox: Ensure that KeyValue is set correctly when full text
->
+     keyed in i.e. when autocomplete not performed
->
->
+.   Cleanup of "Uses" clauses and add console mode support. IBX should now support
->
+     console mode applications with all LCL required functions (builtin dialogs and
->
+     cursor management) centralised in the  IBDialogs unit. As long as "IBDialogs" is
->
+     not included in your project, IBX should compile and link with a console mode program.
->
+     See consolemode example and its "readme"for further guidence. DO NOT add the ibexpress package to a
->
+     console mode application or the IDE will automatically assume that your
->
+     application is GUI based. Instead, you should include the ibexpressconsolemode package.
->
->
+     IMPORTANT NOTE: IBDialogs must be included in GUI applications in order
->
+     to use the built in dialogs and cursor management. IBDialogs is
->
+     included by default if "ibexpress" is in your project source's "uses" clause.
->
+     This should be the case for all projects created through the IDE. This is why
->
+     you do not want to add the ibexpress package to console mode applications. The
->
+     ibexpressconsolemode package has been created to allow console mode programs
->
+     to avoid adding LCL dependencies when using IBX, while still having the
->
+     unit search paths set up correctly.
->
->
+     Existing users should check to ensure that the "ibexpress" unit is included in
->
+     each project's source file (*.lpr).
->
->
+     You may find that in order for the IDE to recognise that ibexpressconsolemode
->
+     exists, you have to first open the package in the IDE and then close it. This
->
+     adds it to the most recently accessed packages list. To make it permanently
->
+     available, add the package name to lazarus' staticpackages.inc file.
->
->
+         Thanks to Julio Jiménez for suggesting support of console mode.
->
->
+.   SQL Parser can now accept quoted strings that include new lines
->
->
+.   IBDynamicGrid: Lookup Cell Editor - the cursor is now positioned at end
->
+     of text on start of edit. This is particularly useful when tabbing to a
->
+     column and then inserting text.
->
->
+.   New Examples provided for IB Services and ISQLMonitor.
->
->
+. Fix error when writing to blob streams that recorded only the last buffer
->
+    write in the blob stream. In most cases, this did not cause a problem as the
->
+    IB Blob Stream is written in a single write. However, with the TDBImage, write
->
+    of a graphic type prefix was lost which caused a problem when the image could
->
+        not be automatically recognised.
->
->
+. Improve generation of random cursor names in TIBSQL - avoid risk of "cursor
->
+    already open" errors due to random numbers used for the cursor name being identical.
->
->
+. IBTable: corrected error that could result in an "Index out of bounds" error
->
+    when opening the table and the Primary Key is the last or only column in the
->
+    table. Thanks to Rick Hoover for the fix.
->
->
+. Fix TIBDatabase initialisation of lc_ctype under unix. Set to "UTF8" instead
->
+    of "UTF-8", and update list of available database character sets. Existing
->
+    users should check the current lc_ctype setting in their applications.
->
->
+IBX Change Log  version  (1.2-4) Sat, 09 May 2015 12:38:29 +0100
->
->
+.  Firebird Services: avoid List Index error when opening a service with an
->
+    empty Params property.
->
->
+.  IBControls: Fix problem with new link mechanism introduced in 1.2.3.
->
+    Link now set up in Loaded method - avoids occasional failure to apply
->
+    SQL markup on initial open.
->
->
+.  "Employees" example performance improvements when scrolling.
->
->
+.  DBControlGrid: Correctly handle edit panel removal when panel is child control of a
->
+    TFrame. Force recaching of selected frame to avoid GTK race (results in a
->
+    random image cached).
->
->
+.  DBControlGrid: Should now react to changes in panel height at run time.
->
->
+.  IBDynamicGrid: Redraws rows below on panel editor hide - avoids blank space at end of grid
->
+    even when further rows exist.
->
->
+.  DBControlGrid: DefaultRowHeight is no longer a published property as it should
->
+    always be derived from panel height and setting this property can cause confusion.
->
+    Note for existing projects: to avoid a missing property error at run time,
->
+    each form using the DBControlGrid must be opened, updated and saved in the IDE
->
+    in order to remove the property value from the lfm.
->
->
->
+IBX Change Log  version (1.2-3) Tue, 14 Apr 2015 14:11:17 +0100
->
->
+.  TIBStoredProc. Prepare now called by ParamByName to avoid need to always
->
+    call Prepare before setting parameter values.
->
->
+.  Error message on ParamByName (all cases) not found now includes name of missing parameter.
->
->
+.  Code tidyup and more robust handling of dsql information result vector.
->
->
+.  Support for centralised handling of transaction status changes. TIBTransaction
->
+    has been given additional events "AfterEdit", "AfterInsert", "AfterDelete", "AfterPost"
->
+    and "AfterExecQuery". The first three are called after the same event is called
->
+    for an IBCustomDataSet descendent using the Transaction. The fourth is called
->
+    after a call to TIBSQL.ExecQuery, again using this transaction. These new events
->
+    enable monitoring of transaction status changes for a given transaction to be
->
+    handled in a single place. For example, when a change to the dataset occurs
->
+    an indicator can be set that shows the user that in order to save changes,
->
+    the transaction should be committed.  Rather than doing this per dataset, this
->
+    can now be done per transaction.
->
->
+.  TDataSet.CheckBrowseMode automatically posts changes to the current row when
->
+    the dataset is scrolled. However, any changes to the current row are, by default,
->
+    discarded when the dataset is closed. TIBDataSet, TIBQuery and TIBTable now
->
+    have a new property "DataSetCloseAction" that adds automatic posting of changes
->
+    on dataset close. If this property is set to dcDiscardChanges (default) then the
->
+    behaviour is unchanged from previous versions. if the value is set to dcSaveChanges
->
+    then IBX will attempt to post any unsaved changes before the dataset is closed
->
+    (and after the BeforeClose event handler is called). The exception is when the
->
+    dataset is being closed as a result of a transaction rollback. In this case,
->
+    no action is taken and any unsaved  changes are discarded. This avoids both
->
+    unnecessary overhead and the risk that a validation error may occur in the Post
->
+    raising an exception and thereby preventing a rollback.
->
->
+.  String Field sizes and Display Widths should now be correct for multi-byte character sets.
->
+    In earlier versions, the Display Width was set to the maximum byte width rather than the character
->
+    width. Display Widths are now corrected by dividing by the max byte width per character.
->
+    For UTF8 character sets, the byte width is four and hence the Display Width will be
->
+    the byte width divided by 4. The byte width of each character set is determined
->
+    dynamically when the database connection is estabished from the RDB$CHARACTER_SETS
->
+    system table. (see also http://bugs.freepascal.org/view.php?id=27766).
->
->
+.  SQLParser will now correctly parse SQL Text which contains ':' within quoted string.
->
->
+.  IBLookupComboEditBox: List should now always be restored to full list when the
->
+    control loses focus. Default Key press default interval reduced to 200ms.
->
->
+.  DBControlGrid: Ensure that selection is changed to newly appended row, even
->
+    when dataset rows are less than visible rows.
->
->
+. IBDynamicGrid: Editor Panel is not shown on indicator click if Datasource
->
+    does not exist or DataSet is empty. More responsive on dataset open. New event
->
+    OnRestorePosition. Column sort disabled if no header row.
->
->
+. IBTreeView: improved handling of response to "Add Node". Avoid scrolling dataset
->
+    while dataset state is dsInsert. Avoids posting errors.
->
->
+. IBControls: New mechanism for distributing UpdateSQL and UpdateParams events. This is to
->
+    avoid conflict with DisableControls/EnableControls with Master/Detail linked tables.
->
->
+. IBLookupComboEditBox: Now avoids SQL Errors when combo box text contains single quotes.
->
->
+. TIBDataSet and TIBQuery: new Event - OnValidatePost. This event has been introduced
->
+    to solve a specific problem. That is when the dataset cursor is moved (e.g. by
->
+    a grid mouse click and the current row is being edited or inserted. In this case, TDataset
->
+    always "posts" the current record regardless or whether or not it may be more appropriate
->
+    to cancel any changes; the post occurs before the "BeforeScroll" event fires due to the way the
->
+    "MoveBy" function is implemented by TDataSet. The OnValidatePost event is called
->
+    as the first action of the "Post" method and allows the handler to convert the Post
->
+    into a Cancel if that is the appropriate action on moving to a different row. This is
->
+    achieved by returning with "CancelPost" argument set to true. Note that an exception could be
->
+    raised here, but it may still be more appropriate to validate a post and signal
->
+    a problem in the "BeforePost" event handler. See readme.automaticposts.xhtml)
->
->
+. On Unix derived systems, the Firebird library name can now be given as a colon
->
+    separated list. Each library name on the list is tried in turn, in left to right
->
+    order with the first found being used as the firebird library. By default, on Linux,
->
+    the library name list is 'libfbembed.so.2.5:libfbembed.so.2.1:libfbclient.so.2'. This can be
->
+    overidden by the FBLIB environment variable or the OnGetLibraryName function.
->
->
+    Note: when using the libfbembed.so, if you prefix the database name with "localhost:"
->
+    then it will still attempt to access the database via the Firebird Server and will
->
+    require a username and password. If only the pathname is given, then the username
->
+    and password should be omitted and the unix file permissions are used to grant
->
+    access.
->
->
+IBX Change Log  version  (1.2-2) Sat, 14 Mar 2015 11:35:04 +0000
->
->
+.  A new IBControl - TDBControlGrid has been added. TDBControlGrid a lookalike
->
+    rather than a clone for the Delphi TDBCrtlGrid. TDBControlGrid is a single column grid
->
+    that replicates a TWinControl - typically a TPanel or a TFrame in each row. Each row
->
+    corresponds to a row of the linked DataSource. Any data aware control on the
->
+    replicated (e.g.) TPanel will then appear to have the appropriate value for the row.
->
->
+. As suggested by Julio Jiménez, a new property "SQLHourGlass" has been added to TIBDatabase.
->
+   When set to false (default true), the Hour Glass cursor is supcpressed and no cursor change
->
+   takes place during database access. This may be useful when there are performance issues with
->
+   the change of cursor. Setting the property to false suppresses the change of cursor.
->
->
+. As suggested by Julio Jiménez, a new property "AutoCommit" has been added to TIBDataSet, TIBQuery
->
+   and TIBTable. When set to acCommitRetaining (Default: acDisabled), a call is made to
->
+   Transaction.CommitRetaining immediately after every Post or Delete. This has the effect of
->
+   making all changes permanent immediately rather than when the transaction is explicitly
->
+   committed.
->
->
+. Experimental support for the Firebird 3 SQL_BOOLEAN type has been added while still
->
+   using the legacy Firebird API. Thanks to Gabor Boros for helping to test this feature.
->
->
+IBX Change Log  version      (1.2-1) Fri, 13 Mar 2015 11:14:15 +0000
->
->
+Development version only.
->
->
+IBX Change Log  version   (1.2-0) Thu, 26 Feb 2015 10:34:04 +0000
+. An internal select SQL Parser is now available for TIBCustomDataset descendents.
+   This is typically used during an "OnBeforeOpen" event handler to manipulate the
+   TIBLookupComboEditBox is a TDBLookupComboBox descendent that implements "autocomplete"
+   of typed in text and "autoinsert" of new entries. Autocomplete uses SQL manipulation
+   to revise the available list and restrict it to items that are prefixed by the
-<
+   typed text (either case sensitive or case insenstive). Autoinsert allows a
->
+   typed text (either case sensitive or case insensitive). Autoinsert allows a
+   newly typed entry to be added to the list dataset and included in the available
+   list items.
+. Three new examples illustrate the use of the new IB Controls
-<
+IBX Change Log  version                      (1.1-0) Mon, 07 Jul 2014 14:01:07 +0100
->
+IBX Change Log  version  (1.1-0) Mon, 07 Jul 2014 14:01:07 +0100
+. TIBXSQLVAR code clean up and optimisation to improve client side "prepare" and parameter
+   setting performance. See "readme.field+param.names in the doc folder.(Thanks to

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Comparing ibx/trunk/changelog (file contents): Revision 21 by tony, Thu Feb 26 10:33:34 2015 UTC vs. Revision 107 by tony, Thu Jan 18 14:37:40 2018 UTC

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Comparing ibx/trunk/changelog (file contents):
Revision 21 by tony, Thu Feb 26 10:33:34 2015 UTC vs.
Revision 107 by tony, Thu Jan 18 14:37:40 2018 UTC