  { Delphi 3 and later, TOPAZ 7.5 }

  The enclosed two samples show how to manipulate TOPAZ's Virtual File
  component at run time.

  RTVFILE1.ZIP

    This sample shows how to specify a TOPAZ virtual file structure
    at runtime by simply giving TOPAZ the list of fields.

    In this sample an instance of TTzVFile is created by Delphi, we dropped
    TzVFile1 on the form at design time. Obviously an instance of TTzVFile
    can be created at runtime.

  RTVFILE2.ZIP

    This sample shows how to create a TOPAZ virtual file at runtime by
    using file structure of an existing disk file.

    In this sample instances of TTzVFile and TDataSource are created
    at runtime. The sample shows how to link a dataaware control (TDBGrid)
    to an instance of TTzVFile via Delphi's TDataSource component.


  Since in both samples we set SaveToDisk property to TRUE in the code, a
  disk file will be created when you run and quit the application. If you
  do not want TOPAZ to create a disk file DUMMY.DBF simply comment out
  the following line in the code:

   // TzVFile1.SaveToDisk := TRUE;

