VG VCL Library 5.1
==================

The set of components for Borland Delphi 2, 3, 4 & 5 and C++ Builder 3 & 4.

100% source code.


Latest Changes
--------------
New compiler versions:
 Delphi 5
 C++ Builder 3.0, 4.0

New languages:
 Dutch, French

New components, classes:
 TvgTranslator
 TDBExpression
 TExplorerShellFolderNode

 TZLIBCompressor
 TReadMemoryStream
 TComponentPoolManager, TIntfPoolManager, TComPoolManager

New properties, methods, events:
 TExplorerNodes: ClipboardMode, DblClick, CanCopyList, CanCutList,
 CanDeleteList,  DoCopyList, DoCut, DoCutList, DoDeleteList
 TExplorerSource: DoCopy, DoCut, OnCopy, OnCut
 TvgThread.Terminated
 TMSSCScript.ScriptControl moved to public

Other changes
 TvgWordPrint "suppress duplicate values" option added
 TMSSCScript multiple user-defined COM objects support added
 TTranslator removed from library
 New units: vgBCDUtl.pas, vgI4_TLB.pas, vgI5_TLB.pas, vgI.Inc
 New typelibs: vgI4.dll, vgI5.dll
 Rewritten a number of component editors
 Decreased a number of packages
 A number of demos added
 HandleSafeCallExceptionEx function allows to suppress a number of raised
 EOleException exceptions while debugging

New functions
 vgUtils.pas
   FindInteger, CompareChars, ZeroMem, Like, WriteBufferAt,
   CompareInteger, CompareDWord, CompareInt64, CompareUInt64
 vgVCLUtl.pas
   BrushDrawCentered, BrushDrawImageListCentered, AppSetCursor, AppRestoreCursor
 vgDBUtl.pas
   SetDataSetsFieldFormat
 vgOleUtl.pas
   GetActiveOleObject
 vgComObj.pas
   HandleSafeCallExceptionEx

Overview
--------
   VG VCL Library contains a large collection of components, objects and
utility routines for Delphi. It is distrubuted with full source code and
is compatible with Borland Delphi 2, 3, 4, 5 and C++ Builder 3.0.

   Library includes Russian, English, Spanish, Dutch and French string
resources.

   VG VCL Library contains a few components that reqire RX Library. These
components are optional. To use them you should have RX Library 2.30
or higher to be installed.

   VG VCL Library is a freeware product. Feel free to distribute the library
as long as all files are unmodified and kept together.

   There is no help available.

Components
----------
   TvgThread component is the TThread wrapper that allows simple thread
   programming without writing TThread descendents.

   TMoneyString translates numbers into verbal representation.

   TDateTimeStorage and TCurrencyStorage components allow to edit regional
   settings variables to make application behavior to be independent from
   operating system configuration.

   TFormLoader component simplifies merging forms into TWinControl descendents
   and is usable for creating multi-sheet forms and outlook user interfaces.

   TMSSCScript component wrapps Microsoft Script Control and enables you to
   write and execute VBScript and JavaScript scripts within your application.

   TvgTranslator component allows to create multilanguage applications.
   It stores language-specific string values in INI files or through
   user-defined event handlers and allows users to create their own
   translations of program interface.

   TvgSplitter control has the same functionality as the standart TSplitter.

   TClickEdit controls looks like standart TEdit. It allows to align an edited
   text horizontally and has an optional button at the right side.

   TTitler is a custom panel that shows auto-scrolling text.

   TvgPageControl is the TPageControl descendent that makes available a number
   of advanced properties of the TPageControl control of Delphi 4.

   TvgNoteBook controls is the TNotebook descendent with 3D view.

   TvgTabSet is a custom-draw TTabSet. It allows to edit tabs orientation.

   TExplorerNodes component and it's descendents provides you with powerful
   instrument of handling tree-like data structures. When using explorer
   components developer can program a complex TTreeView or TListView
   wrapping with just a few lines of code. Library includes over 10 full-
   functional descendents of the TExplorerNodes component.

   TExplorerSource component allows to set virtual root in the TExplorerNodes
   hierarchy to browse subtree of root inside explorer controls.

   Explorer controls represent tree-like structures in a number of different
   ways. Library includes TExplorerTreeView, TExplorerListView,
   TExplorerListBox and TExplorerTreeCombo controls that support all
   advanced features of the TExplorerNodes component interface.

   TvgDatabase provides developer with advanced transaction control for
   multithreaded applications. This component is usable when writing
   application servers in the apartment threading model.

   TvgQuery extends functionality of the TRxQuery (RX Library) component.
   It automatically refreshes when it's params or macros are changed.

   TvgSQLScript executes multiple SQL statements. TvgSQLScript provides you
   with macro extensions of SQL like TRxQuery does.

   TvgUpdateScript is the TUpdateObject descendent that allows to execute
   multiple SQL statements when applying cached updates.

   TFieldSource is the TFieldDataLink wrapper. It filters data events
   that send TDataSource to listed fields.

   TOpenTables component manages list of open datasets. It counts references
   on the dataset and closes it when the dataset is no more needed.

   TBDEDataSetHook component assigns events of the given dataset to simplify
   buisness-logic coding of the large datamodule.

   TDBConverter, TBDEConverter provides you with codeless intelligent
   techinque of converting old databases into databases with new structure.

   TvgDBGrid is the TRxDBGrid (RX Library) descendent that has miscelaneous
   visual enhancements. The two different row colors make grid to look better.

   TvgQuickSearch and TRxQuickSearch provide incremental search in the TDBGrid.
   When using these components user can copy contents of the dataset into
   Clipboard pressing Ctrl+C.

   TvgDBLookupCombo component is the TRxDBLookupCombo descendent. It has
   an optional small button. This button allows to browse and edit data
   dictionaries on-the-fly.

   TvgDBTreeView control is the fast and smart component that navigates
   through tree-like datasets.

   TvgDBTreeCombo component is the TvgDBTreeView control in the form of
   drop-down list.

   TvgDBMenu component implements TDBNavigator functionality in the form
   of popup menu.

   TDBRadioButton is the standalone radio button that doesn't require
   TDBRadioGroup to work.

   TDBExpression implements a powerful expression evaluator. It allows to
   evaluate string expressions in the way the TDataSet.Filter property works.
   Component supports about 20 functions including aggregate functions
   SUM, MIN, MAX and AVG.

   TvgWordPrint is a component family that provides developers with
   powerfull open architecture report system for Microsoft Word.
   Family includes full-functional components that works with data of
   the BDE and client datasets.

Libraries
---------
 vgUtils.pas
     General-purpose routines. Component copying, cloning, iterating.
     Nil-able TList routines. Variant comparing, streaming. Log files.
     String and floating-point routines. Registry and ini-file utilities.
     Resourcestring on-the-fly localization
 vgTlHelp.pas
     List of running process (Windows 95).
 vgVCLUtl.pas
     Cursor management, controls iterating, drawing routines.
 vgDBUtl.pas
     Datasets and fields routines. Generation of SELECT and UPDATE SQL
     statements. Field validation (CheckXXX functions). NVL-functions.
     Clipboard support routines. Bokmarks for primary keys, refresh.
     Full search locate.  String fields autosizing.
 vgDBPrms.pas
     TParams utilities. Update statement parameters support.
 vgBDEUtl.pas
     Transaction support. On-the-fly queries. Building TUpdateSQL.
     Editing CachedUpdates. Exception translation.
 vgCachUp.pas
     Advanced editing of CachedUpdates.
 vgOleUtl.pas
     TDispInvokeCache class speeds up OLE automation up to 2 times.
 vgComObj.pas
     Helper classes for COM servers (apartment threaded factories).
 vgSystem.pas
     Special TThread descendents. Compression classes and routines.
     Variant compression.
 vgMemory.pas
     Native WinAPI memory manager
 ConstsRC.pas
     On-the-fly resourcestring localization of Consts.pas.
 DBConstRC.pas
     On-the-fly resourcestring localization of DBConsts.pas.
 vgBCDUtl.pas
     BCD utility routines

Notes
-----
  VG VCL Library requires next files in the system path:
    MSVCRT.DLL
    VGLZSS32.DLL
    VGI0.DLL (only for Delphi 3 or C++ Builder 3)
    VGI4.DLL (only for Delphi 4 or C++ Builder 4)
    VGI5.DLL (only for Delphi 5)

  If RX Library is 2.40 or higher make sure that RX240 conditional define
  is defined in the VG.INC include file.

  MS Script Control OCX is available at http://www.microsoft.com/scripting.

-------------------------------------------
Vladimir Gaitanoff
WWW:             http://www.tsinet.ru/~vg/
E-mail:          [email protected]

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