El 30/10/14 a les 22:44, Michael Van Canneyt ha escrit: > > > On Thu, 30 Oct 2014, Joost van der Sluis wrote: ... >> Easy: Some systems use the recno as some sort of 'bookmark'. And some >> people insist that this is the correct behaviour for a dataset. (Note
Since a dataset provides GetBookmark, GotoBookmark and FreeBookmark I always thought that was the correct procedure to, well, set a bookmark ;-) >> that for TBufDataset a call to recno is really slow, as it has to >> iterate over all records to get the correct recno.) > I understand why the GetRecNo is there, just not why it is implemented > as it is in TSDFDataset. > (which is what I was investigating) > >> But that TDBGrid uses the recno is troublesome... But I don't see a >> better solution. > > 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). Bye -- Luca _______________________________________________ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
