Gtk2::TreeIter(3) User Contributed Perl Documentation Gtk2::TreeIter(3)

Gtk2::TreeIter - wrapper for GtkTreeIter

Glib::Boxed
+----Gtk2::TreeIter

package MyCustomListStore;
use Glib::Object::Subclass
    Glib::Object::,
    interfaces => [ Gtk2::TreeModel:: ],
    ;
...
sub set {
    my $list = shift;
    my $iter = shift; # a Gtk2::TreeIter
    # this method needs access to the internal representation
    # of the iter, as the model implementation sees it:
    my $arrayref = $iter->to_arrayref ($list->{stamp});
    ...
}

The methods described here are only of use in custom Gtk2::TreeModel implementations; they are not safe to be used on generic iters or in application code. See "CREATING A CUSTOM TREE MODEL" in Gtk2::TreeModel for more information.

•
$sv_iter (scalar)

Create a new Gtk2::TreeIter from the "internal" array reference representation used by custom Gtk2::TreeModel implementations. This is the complement to Gtk2::TreeIter::to_arrayref(), and is used when you need to create and return a new iter from a method that is not one of the Gtk2::TreeModelIface interface vfuncs. See "CREATING A CUSTOM TREE MODEL" in Gtk2::TreeModel for more information.

•
$from (scalar)

Set the contents of $iter. $from can be either another Gtk2::TreeIter or an "internal" arrayref form as above.

Often you create a new iter instead of modifying an existing one, but "set" lets you to implement things in the style of the "remove" method of Gtk2::ListStore and Gtk2::TreeStore.

A set can also explicitly invalidate an iter by zapping its stamp, so nobody can accidentally use it again.

$iter->set ([0,0,undef,undef]);

•
$stamp (integer)

Convert a boxed Gtk2::TreeIter reference into the "internal" array reference representation used by custom Gtk2::TreeModel implementations. This is necessary when you need to get to the data inside your iters in methods which are not the vfuncs of the Gtk2::TreeModelIface interface. The stamp must match; this protects the binding code from potential memory faults when attempting to convert an iter that doesn't actually belong to your model. See "CREATING A CUSTOM TREE MODEL" in Gtk2::TreeModel for more information.

Gtk2, Glib::Boxed, Gtk2::TreeModel

Copyright (C) 2003-2011 by the gtk2-perl team.

This software is licensed under the LGPL. See Gtk2 for a full notice.

2023-07-25 perl v5.38.0