Sorts the GtkClist according to the settings of sort column and sort type. The sort function knows to distinguish between normal text and pixtext, so that a mixture of normal and pixtext will be sorted right.

The items are handled as text when being compared, so numbers will be not in a "natural" order.

Here is an example how to let the user sort the list by columns when he clicks on a column title. The sort order (type) is changed everytime he clicks on the same column title.

function sortList( $objList, $nColumn)
{
	if( $nColumn != $objList->sort_column ) {
		$objList->set_sort_column( $nColumn);
		$objList->set_sort_type( GTK_SORT_ASCENDING);
	} else {
		if( $objList->sort_type == GTK_SORT_ASCENDING) {
			$objList->set_sort_type( GTK_SORT_DESCENDING);
		} else {
			$objList->set_sort_type( GTK_SORT_ASCENDING);
		}
	}
	$objList->sort();
}
$objList->connect( 'click-column', 'sortList');