On 14/6/10 3:13, Peter E Williams wrote:
Hi All,
I really need to know what is the Dbase3/4 unit for Lazarus/Free Pascal
and where is the sample project for manipulating them. I found it
somewhere on the lazarus website but don't know where. I hope that it is
okay for me to post some of my code which uses the XBase1 unit in Delphi
5 Enterprise which I am porting to my Hexxpawn8 game (which is cross
platform open source).
I use Dbase3/4+ files to store board patterns for my game which is sort
of a cross between the pawns in Chess and checkers, using AI logic
against the computer. (I chose Dbase format because it was the single
most common database file format at the time.)
What is the replacement unit for XBase1 for using Dbase3/4 files, and
the functions/procedures etc to replace these calls to XBase1 ?
How do I do the following:
// declaring a Dbase file -- TXBase (what is the equivalent in Lazarus?)
> // I need to Get the Record # (HexxData.RecNo;)
<snip>
For a general introduction have a look at
http://wiki.lazarus.freepascal.org/Lazarus_Database_Tutorial
For using Tdbf have a look at
http://wiki.lazarus.freepascal.org/Lazarus_Tdbf_Tutorial
Under Windows you would find the dbflaz.lpk package in
lazarus\components\tdbf\
There is an example application using Tdbf in lazarus\examples\addressbook\
You are best to avoid use of record numbers for locating records
altogether. Use the LocateRecord() method of Tdbf of one of its variants
instead.
Howard
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