Re: setting object data (how do I?)

[Paolo Molaro <lupus ximian com>]

On 06/25/01 Jim Edwards wrote:
> I have a tree with two levels, call them branchs and leafs.
>
> I don´t want the user to be able to select branchs, how can I turn that
> off?

You may connect to the select-child signal and unselect it if it's a branch.
Note however that the Gtk::Tree widget has lots of bugs and is deprecated:
if possible switch to Gtk::CTree.

> When someone selects a child and clicks okay in the dialog, I want to
> retreve the label of the leaf and it´s branch.  How can I retreve that
> information given that I know how to get the selected TreeItem object?
>
>
>
> One way I was trying to assign the info using gtk_object_set_data as
> follows:
>
>
>  foreach $item (@{$list->{$gridtype}}) {
>     my $sleaf = new_with_label Gtk::TreeItem( $item );
>
>     $sleaf->gtk_object_set_data("$gridtype:$item");
>
>     $subtree->append($sleaf);
>     $sleaf->show();
>   }
>
> But I get an error
>
> Can't locate object method "gtk_object_set_data" via package
> "Gtk::TreeItem" - which makes sense to me but how do i really do it?

If gtk_object_set_data() will be wrapped it would be available as
$object->set_data() anyway....
gtk_object_set_data() is not type safe and as such is not exported to
perl. Note, however, that every Gtk::Object is a hash reference and
you can use it to store data with the object itself:

        $object->{mydata} = "stuff";

That said, your problem can be easily solved in another way:
a Gtk::TreeItem is a Gtk::Item is a Gtk::Bin and contains a Gtk::Label,
so you can just use:

        # leaf item       get the Gtk::Label        get the text in the label
        $treeitem->       child->                   get();

lupus

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