[fpc-pascal] Why TSdfDataSet doesn't simply return FCurRec as RecNo?

[Joost van der Sluis]

On 10/31/2014 10:06 AM, Luca Olivetti wrote:
> El 30/10/14 a les 22:44, Michael Van Canneyt ha escrit:
>> Delphi DBGrid does not use recno, so it must be possible... AFAIK
>> TDatalink has special provisions to provide a window buffer.
>
> Well, if you "fix" the dbgrid not to use RecNo, I'm still left with my
> original problem of knowing if I'm positioned at the first or the last
> record (specifically for a TSdfDataset, where FCurRec is the correct
> answer, and I still think it would be the correct value for RecNo).

With .eof and .bof? But those are not always set, you have to use 'next' 
or 'prior' to really know if you are at the first or last record.

(TSdfDataset is not buffered, but with a buffered dataset there really 
is no other way to detect the first or last record, since it could be 
that those records are simply not fetched yet)

Joost.