Re: liststore update question

["muppet" <scott asofyet org>]

B McAndrews said:
> I have liststore setup with an appropriate view. The model was initially
> set with data from database.  I can get updates from the database, but
> I'm unsure as to how I go about updating the model and subsequently the
> view.  Rows won't be added or deleted, so I thought of something I could
> cache the iterators that were created at initialization, but I'm not
> sure that would work.  Can anyone  help me here?

The iters are not guaranteed long lifetimes, so you do not want to cache them.
 Instead, you'd use a Gtk2::TreeRowReference, which is guaranteed to point to
the right place, even if the data in the list changes, so long as the row
exists.

http://developer.gnome.org/doc/API/2.0/gtk/GtkTreeModel.html#gtk-tree-row-reference-new
and http://gtk2-perl.sourceforge.net/doc/pod/Gtk2/TreeRowReference.html


After that, as far as i know, when you do

  $model->set ($iter, COL1 $val1, COL2, $val2, ...);

the view should update automatically, with no intervention from you.  In fact,
i've been looking for a way to freeze/thaw the liststore during large updates;
i think $object->freeze_notify and thaw_notify are supposed to work here.

-- 
muppet <scott at asofyet dot org>