[lazarus] Trying to port a Delphi graph

[Marco van de Voort]

> >
> >I'm not familiar with the DISPOSE keyword or function.  Can someone help
> >me decipher what is supposed to be happening here?
> 
> Dispose is the opposite of New.
> 
> With New you can allocate dynamic variables like:
> 
> var
>    P: PMyRecord
> begin
>    New(P);
> 
> if you don't need your variable anymore you should use Dispose to fee memory
> In this case Dispose(P);
> 
> FPC in your case complains, since it doesn't know how to dispose a pointer. 
> You can avoid that by casting FTrapezes[i] to the PointerType it contains

Delphi accepts it, then so should FPC.  I suspect it dates from the time of early Delphi
compability where freemem always had to have a size parameter. It doesn't need that anymore
nowadays, so that would be the same for dispose?