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 Managing VBXs - Visual Basic Control files
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   VBXs Visual Basic files are in fact renamed DLLs originally developed by
   Microsoft Visual Basic, and they have become a standard representing
   one of the most important software industry attempts to develop reusable
   software components and language independent.

   A VBX file is a self-contained new kind of control you may use in your
   applications, as you normally use PushButtons, Edits, Radios, ... There
   are also new controls like these but developed by third party companies,

   The VBX control architecture has been developed in a way that lets any
   language (which supports VBXs) use them, it does not matter what
   programming language you use.

   There are three different levels of VBX controls, according to the three
   different versions of Visual Basic on the market. Most of the VBXs
   controls you find have been developed for Visual Basic version 1.0.
   But it is assumed that very soon we will have more and more VBXs which
   use 2.0 and 3.0 VB specifications.

   VBX architecture is very complex. Certainly, it is not an easy task to
   develop a VBX file. Though, using VBXs is extremely easy!

   Borland recently has developed a stand-alone DLL which offers an easy
   VBXs management capabilities. This DLL ( BiVbx__.DLL ) may be used by any
   Windows application capable of using DLLs.

   Due to the internal complexity of VBXs and to the certain growing complexity
   that VBXs development (for sure) will be getting in the future, we have
   decided in FiveWin to offer an easy support to Borland's BiVbx.DLL which
   lets us concentrate on the xBase aspects and OOP capabilities from
   FiveWin, but taking advantage of the technical excellence of Borland
   software.

   The only requirement for you to use VBXs with FiveWin is that you have
   to be a Borland products registered user. Please contact your Borland
   representative for details. BiVbx__.DLL comes with Borland C++ 4.0 and
   above. We DO NOT include BiVbx__.DLL with our software.
   BiVbx__.DLL will be included with many software developments and
   it is going to be a widely accepted and used software tool.

   There are plenty of commercial and shareware VBXs files available in
   CdRoms, BBSs, etc... The big benefit of adapting VBXs use to FiveWin
   is that from now on FiveWin will be also enhanced a lot with new
   features and capabilities based on the emerging VBX market.

   Both Borland new Resource workshop (the one that comes with BC++ 4.0)
   and Microsoft App Studio resource editor, offer the capability of
   using VBXs, which may be added as a new standard controls tool, so you may
   easily place them in your DialogBoxes designs. You may inspect its
   data and some behaviors from there and, using the resources you
   generate with them, FiveWin will let you use them from inside your
   CA-Clipper & FiveWin applications.