[fpc-pascal] Pointers in Pascal!!

[Leonardo M. Ram�]

You can assign "nil" to the pointer before using it, then check if PStruct = nil it wasn't
created.

Leonardo.

--- Zaka E-Lab <shanatorio at gmail.com> wrote:

> I have something like this:
> 
> PStruct = ^Struct;
> Struct = record
>           num    : integer;
>           end;
> 
> I have a unit to handle that structure ( is a bit more complicated, but
> is a good example), in this unit I have a procedure that deletes (
> disposes ) the pointer. How can I know if a pointer are created or not?,
> I mean, I don't wont to try to delete something that has not been
> created yet, but I don't know how to do it, if that is possible.
> 
> Thanks a lot.
> 
> Zaka.
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> 



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