NDX files with Clipper

In our application, we are using Clipper's default NTX files. However, some databases must be published now with MS-Access. If I link these tables, I can't use the NTX index files, since MS-Access is not supporting that.
In Clipper I could use the VIA "DBF" option behind the USE command, however, this results in a "Operation not supported" error message. So, what do I need to do to create NDX files in my Clipper program. (Note : The RDDSETDEAFULT() function is not an option because this applies to all the databases)

Thanks in advance
Who is Participating?
eefraireConnect With a Mentor Commented:
// An example of how to create and open both ntx and ndx files.
// To compile and link:
// clipper TNdx /w /n
// blinker blinker incremental off file TNdx lib clipper, dbfndx
// The program will create and open the following files:
// FILE1    DBF            67
// INDEX1   NTX         2,048
// FILE2    DBF            67
// INDEX2   NDX         1,024
// FILE3    DBF            67
// INDEX3   NTX         2,048

procedure main()
      request dbfndx

      zmake("dbfntx", "file1.dbf", "index1.ntx")
      zmake("dbfndx", "file2.dbf", "index2.ndx")
      zmake("dbfntx", "file3.dbf", "index3.ntx")

      zopen("dbfntx", "file1.dbf", "index1.ntx")
      zopen("dbfndx", "file2.dbf", "index2.ndx")
      zopen("dbfntx", "file3.dbf", "index3.ntx")

procedure zmake(driver, f, i)
      local s := {{"onefield", "c", 1, 0}}
      field onefield
      dbcreate(f, s, driver)
      use (f) via (driver)
      index on onefield to (i)

procedure zopen(driver, f, i)
      local mess

      use (f) via driver
      set index to (i)

      mess := padr("  File: " + f, 20) + ";"
      mess += padr(" Index: " + i, 20) + ";"
      mess += padr("   Key: " + indexkey(0), 20) + ";"
      mess += padr("Driver: " + driver, 20)


Do you need to actually create the NDX files in clipper or just access them? Linking in the DBFNDX.LIB should allow you to use an NDX index in clipper....
nlnfmrvrAuthor Commented:
To both eefraire and pcwhip

Pcwhip answered my question already yesterday, but I was not able to answer after testing his proposal. The clue was linking DBFNDX.LIB

Also eefraire raised this in his/her answer. So you both find the solution for me, but sorry for Pcwhip, I don't know why I can't give you points.


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