Dunbarxx wrote:
> It is certainly possible that one might need an enormous DG or table
> field.
> It never happens that one must view such a beast all at once, or even
> a large part of it; that is not the issue. The point is that one
> cannot have such a control at all, and that seems unfair.
Don't settle for unfair. Grab the DG code and enhance it. The
virtualization method used for vscroll could be adapted for hscroll.
> If one is looking at the first ten columns, and it is desired to jump
> over to columns 6000-6010, well, you cannot.
I wouldn't ask a user to scroll 30 feet. I'd rethink the design.
> Surely the dataSet can be stored in a field or custom property, and
> loaded as needed, but that requires a significant amount of pre-
> processing. The whole point of DG's and tableFields is that they can
> be navigated with virtually unconscious well-worn user actions.
Few read what I write here, so this will likely be as lost as the last
time I addressed this a couple days ago. But I'm just OCD enough to
keep trying, so here goes:
A field is a single control.
A DataGrid is many hundreds of countrols, many of which are fields.
The DG is a good option where you need the unprecedented flexibility it
provides with form layouts.
For everything else using a single control, the engine-native field
object, will outperform because all the processing needed to render the
contents happens in highly-optimized machine-compiled C++.
Try the field object.
Really.
I don't keep writing this to mislead.
> The limit may be intrinsic. It at least should be published.
Perhaps it should. I believe the 65,535px limit for group contents is
documented, and since a DG is a collection of groups it applies there.
If you feel we should replicate limits of groups in the discussion of
the DG I would have no problem with you submitting a pull request for
that. Where would be the appropriate place for that addition, Dict,
Lessons, or User Guide?
--
Richard Gaskin
Fourth World Systems
Software Design and Development for the Desktop, Mobile, and the Web
____________________________________________________________________
ambassa...@fourthworld.com http://www.FourthWorld.com
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