Re: Invalid TreeStore Iterator

[Kevin Ryde <user42 zip com au>]

<list guenther-sohler net> writes:
>       $treeselection->selected_foreach (sub{ 
>       my ($model,$path,$iter) = _;

Generally path and iter objects passed to you in a foreach are only good
for as long as you're in the foreach.  When the signal handler runs
later,

>       $param_dialog->signal_connect('response', sub
>       {
>               print "before\n";
>               $model->set($iter,0,"text");

The iter will be no good any more.  There's a crib on that hidden under
"Memory Handling" in the Gtk2::api docs -- if anyone can possibly divine
that that affects iters in callbacks :-).

Without paying attention to what it's trying to do, maybe hold a
Gtk2::TreeRowReference to the interested row, or just a copy of the path
object, $path->copy, or similar to identify the place to later act on.