Gtk.ComboBox.prototype.get_active

function get_active():Number {
    // Gjs wrapper for gtk_combo_box_get_active()
}

Returns the index of the currently active item, or -1 if there's no active item. If the model is a non-flat treemodel, and the active item is not an immediate child of the root of the tree, this function returns <literal>gtk_tree_path_get_indices (path)[0]</literal>, where <literal>path</literal> is the Gtk.TreePath of the active item.

Since 2.4