Emitted when a new row is selected, or (with a %NULL @row)
when the selection is cleared.
When the @box is using %GTK_SELECTION_MULTIPLE, this signal will not
give you the full picture of selection changes, and you should use
the [signal@Gtk.ListBox::selected-rows-changed] signal instead.
Emitted when a new row is selected, or (with a %NULL @row) when the selection is cleared.
When the @box is using %GTK_SELECTION_MULTIPLE, this signal will not give you the full picture of selection changes, and you should use the [signal@Gtk.ListBox::selected-rows-changed] signal instead.