[lazarus] TDBGrid question

[hernan.et at pg.com]

Hi all,

To give more details, I am using Firebird 1.0.2  under Linux of course.

To Jesus,

The message below was my original post. I think this has to do also with
TIBQuery, do I am not really sure. If I may ask, what database are using for
testing TDBGrid?

Regards,

Yoyong

>>>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?

>>>Regards,

>>>Yoyong





                                                                
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From: Jesus Reyes <jesusrmx at yahoo.com.mx> on 05/19/2003 05:19 PM GMT
                                                                              
             Jesus Reyes           To:   lazarus at miraclec.com                 
 <jesusrmx at yahoo.com.mx>           Cc:    (bcc: Yoyong Hernan-ET/PGI)         
                           Subject:      Re: [lazarus] TDBGrid question       
                                                                              
     05/20/2003 01:19 AM                                                      
       Please respond to                                                      
    lazarus at miraclec.com                                                      
                                                                              





 --- 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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