This method returns the GtkTreeSelection object associated with the view. The selection object itself contains all the data about a selection, be it just a single row, or multiple rows that are selected.
Always keep in mind that the view, not the underlying model, has a selection! That means that different views of the same model can have different selections.
Example 141. Using GtkTreeSelection
<?php
//create a model
$model = new GtkListStore(Gobject::TYPE_STRING);
//create the view to display the model data
$view = new GtkTreeView($model);
//now, get the selection object of that view
$selection = $view->get_selection();
//capture the "changed" signal
$selection->connect('changed', 'selection_changed');
/**
* This is the callback function for the changed
* signal and display the value of the first column
* of the selected row.
*/
function selection_changed($selection)
{
//get_selected returns the store and the iterator for that row
list($model, $iter) = $selection->get_selected();
//get one single value of the model via get_value
echo 'Value of column 0: ' . $model->get_value($iter, 0) . "\r\n";
}//function selection_changed($selection)
//add a column to display the data
$col = new GtkTreeViewColumn('Number', new GtkCellRendererText(), 'text', 0);
$view->append_column($col);
//add some data to the model/store
$model->append(array('Zero'));
$model->append(array('One'));
$model->append(array('Two'));
//add the view to the window
$wnd = new GtkWindow();
$wnd->set_title('GtkTreeView selection example');
$wnd->connect_simple('destroy', array('Gtk', 'main_quit'));
$wnd->add($view);
$wnd->show_all();
Gtk::main();
?>
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