> I had the same problem, opening the queries in the OnFormShow instead
> of the OnFormCreate solved it. It has to do with some timing I think.
> The first tabsheet contained the master data and the second tabsheet
> the detail data. The problem only occured when the second tabsheet
> (with the detail data) was shown for the second time without scolling
> the detail data after it was showed the first time.

That is another place where the grids do not appear.

I have been working on other things - such as the Builder3 and Builder 4
projects for IBO4, but intend to get back to looking at this.

The problem ocures when you open, and then change position in the grid before
the grid has actually been drawn. At least that was the only way I could get
it to go wrong when I tried just to create the problem in a sample. Just
opening the Query before the grid did not cause it. Opening the detail, and
then it switches to displaying the records linked to the master would seem to
do it. If the queries are already open and do not 'move', then there does not
seem to be a problem.

--
Lester Caine
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L.S.Caine Electronic Services