I am not sure thats possible -
"The source code of DISLIN is only available with a support contract. It may
be used for bug fixes and recompiling DISLIN. You are not allowed to distribute
the DISLIN source code, or to make it public."
Are you suggesting that you would add the binding to a (binary) library ? And those binding are (or will be) open source ? Given Dislin's closed source nature, my guess is there would not be a lot of interest .....
Lazarus has TAChart, maybe you would be better off concentrating on enhancing TAChart to do what you require ? Its already a pretty extensive 'package' and all open source.
Davo