Datagrid internal error

[Trevor DeVore]

32,767 is the max for width as well. If there are enough columns it is
possible that the DataGrid is rendering a group that exceeds this limit and
hence the error. The DataGrid works around the limit when rendering rows,
but not when rendering columns.

I suppose a quick test would be to create a DataGrid with 330 columns that
are at least 100 pixels wide and see if you get the same error.

-- 
Trevor DeVore
ScreenSteps

On Mon, Aug 8, 2022 at 12:36 PM Ralph DiMola via use-livecode <
use-livecode at lists.runrev.com> wrote:

> Paul,
>
> The max height of a field is 32,767 pixels. This can be hard to quantify
> especially on mobile with the cornucopia of screen resolutions. I would
> imagine that this limit also applies to groups as well. I got bit on this
> when the app worked in the IDE but failed on some devices.
>
> Ralph DiMola
> IT Director
> Evergreen Information Services
> rdimola at evergreeninfo.net
>
>
> -----Original Message-----
> From: use-livecode [mailto:use-livecode-bounces at lists.runrev.com] On
> Behalf
> Of Paul Dupuis via use-livecode
> Sent: Monday, August 08, 2022 12:39 PM
> To: use-livecode at lists.runrev.com
> Cc: Paul Dupuis
> Subject: Re: Datagrid internal error
>
> On 8/8/2022 12:26 PM, Paul Dupuis via use-livecode wrote:
> > A customer encountered the following execution error (below) in our
> > app (built on Livecode 9.6.7, MacOS 12.5). This error is occurring in
> > the scrips for the Datagrid itself, rather than our code. At the end,
> > it is one of our handler, "populateMe", where line 139 is where the
> > error starts.
> > Line 139 set the dgProp["columns"] of grp "rwMatrixObj_DataGrid" to
> > tColumnNames
> >
>
> For example, some information from the customer suggest they are working
> with a VERY large dataset, so the length of the list in TColumnNames could
> be quit long - perhaps hundreds of lines. Is there a practical limit on the
> number of columns a Datagrid can be set to?
>
>
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