speed

[Frank Schima]

Hi olivier,


On May 7, 2005, at 12:17 AM, Olivier Vidal wrote:

> I try at present Datagrid of Einhugur for my program and it is  
> effectively very fast!
> But it is only a container of data.
> If you want for example to modify a line of the datagrid, it is  
> impossible, in theory.
> It is thus very fast, but a little more complicated to program and  
> less flexible.
>
> Franck, Kem, what are the differences between your listboxs and the  
> datagrid?

I really have 2 dynamic listboxes.

The first one is used in ViSQL. I modified an open source one and  
used that.

The second one is much newer, I needed one that worked better without  
the visual glitches (and occasional out of bounds exceptions) of the  
first one as well as has more features I needed. This one has not  
been made public yet in any form. I am currently only planning to use  
it in my also unreleased financial application.

Both use the same basic principal. Bind a VCursor to a listbox with a  
separate scrollbar. They are very fast because they only retrieve  
data from the visible cells. Scrolling is essentially instantaneous.

I have not used the Einhugur Datagrid so I cannot say what the  
differences are.


Best regards,
Frank Schima