Re: treeview selected row signal

[muppet <scott asofyet org>]

On Jun 30, 2008, at 4:01 PM, anguila wrote:

> I have a treeview and when I click to one of those rows with the  
> signal cursor-changed I can change the name of a label. Also I have  
> 2 buttons, the first one to add a new row to the treeview and the  
> other to remove rows. When I remove a selected row I select the row  
> before (widget->select).
> When I click to the row it works, it changes the label, but when i  
> click to the remove button, only select the row before and doesn't  
> change the label.
> How can I activate the cursor changed signal when I select a row  
> with ->select? Or is a selected row signal or atleast something like  
> that?


Try connecting to the "changed" signal on the TreeView's TreeSelection  
object, instead.  This lets you know every time the TreeView's  
selection changes for any reason.

For example:

    $treeview->get_selection ()->signal_connect (changed => sub {
            my ($selection) = @_;
            my ($model, $iter) = $selection->get_selected ();
            if (defined $iter) {
                my $name = $model->get ($iter, NAME_COLUMN);
                $name_label->set_text ($name);

                $delete_row_button->set_sensitive (TRUE);
            } else {
                # can't delete a row if no row is selected
                $delete_row_button->set_sensitive (FALSE);
            }
    });

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