discuss.visual-prolog.com

Posted: **1 Apr 2015 7:03**

hello forum,

I have noticed that Mozilla firefox, Thunderbird and Kmeleon all use Sqlite as a database.

it might be usefull if we could have an interface to the functions,

on this site: https://www.sqlite.org/download.html

they offer a dll zip download with a .def file and a dll file,

is this suited to use/import in Vip by use dll predicates or other predicates?,

thankyou,

R

Posted: **1 Apr 2015 21:58**

Since there is no LIB file you will have to load the DLL dynamically.

The simplest way is to define a class with the relevant (i.e. matching the C/C++ tryes) predicate declarations

Code: Select all

class sqlite
domains
    sqlite3 = ...
 
predicates
    sqlit3_open16 : (string Filename, sqlite3 ppDb [out]) language c.
...
end class sqlite

and then resolve them from the DLL:

Code: Select all

implement sqlite
    resolve
        sqlit3_open16 from "sqlite3.dll"
...
end implement sqlite

See Foreign Language Code.

Posted: **2 Apr 2015 6:50**

great thankyou for the information, i will try this