[lazarus] TDBGrid question

Jesus Reyes jesusrmx at yahoo.com.mx
Mon May 19 12:57:44 EDT 2003


 --- Michael Van Canneyt <michael.vancanneyt at wisa.be> escribió: > 
> 
> On Mon, 19 May 2003 hernan.et at pg.com wrote:
> 
> >
> >
> > Hi Jesus,
> >
> > I have tried using TDBGrid and it work quite well. But I noticed
> that I cannot
> > scroll backward when my table contains more than 10, (my table
> contains 56
> > rows). I have tried to track it down and it seems that the
> problem is somewhere
> > in TDataset or its parent(s). Can someone have a look  on this?
> 
> I've had this issue in the past, and I suspect has something to do
> with the buffer
> scrolling. I have not yet been able to pinpoint the exact error,
> however.
> 
> The procedure you want is in dataset.inc, line 1634
> 
> Procedure TDataset.ShiftBuffers (Offset, Distance : longint);
> 
> Subprocedure 'shiftbuffersdown'.
> 
> I currently do not have enough time to look at it, but if someone
> else
> has, the above info may help to pinpoint the exact problem.
> 
> Michael.
> 


Sorry, I missed the original message from Yoyong. Still I can't
reproduce the problem, I have a dataset with hundreds of rows and i
can go forward/backward without problem. Can you give more details
about dbgrid geometry/dataset derivative, a backtrace?

Thanks.

Jesus Reyes

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