@Volomike,

当您在主题功能中注册侧栏时，它将在仪表板中处于活动状态。如果没有小部件添加到侧栏，WordPress将添加默认小部件。您可以通过取消注册来阻止WordPress添加默认小部件：

// Remove WP default Widgets
    // WP 2.8 function using $widget_class
    if (function_exists(\'unregister_widget\')) {
        unregister_widget(\'WP_Widget_Meta\');
        unregister_widget(\'WP_Widget_Search\');
        unregister_widget(\'\');

    // pre WP 2.8 function using $id
    } else {
        unregister_widget_control(\'meta\');
        unregister_widget_control(\'search\');
    }

您还可以预设自己的小部件。

// The following code sample is from The Thematic Theme which is licensed under the GPLv2

    register_sidebar_widget(__(\'Search\', \'thematic\'), \'widget_thematic_search\', null, \'search\');
    unregister_widget_control(\'search\');
    register_sidebar_widget(__(\'Meta\', \'thematic\'), \'widget_thematic_meta\', null, \'meta\');
    unregister_widget_control(\'meta\');
    register_sidebar_widget(array(__(\'RSS Links\', \'thematic\'), \'widgets\'), \'widget_thematic_rsslinks\');
    register_widget_control(array(__(\'RSS Links\', \'thematic\'), \'widgets\'), \'widget_thematic_rsslinks_control\', 300, 90);

    // Pre-set Widgets
    $preset_widgets = array (
        \'primary-aside\'  => array( \'search\', \'pages\', \'categories\', \'archives\' ),
        \'secondary-aside\'  => array( \'links\', \'rss-links\', \'meta\' )
        );

    if ( isset( $_GET[\'activated\'] ) ) {
        update_option( \'sidebars_widgets\', apply_filters(\'thematic_preset_widgets\',$preset_widgets ));
    }

Thematic is actually a great example of all the things that can be done with widgets. Take a look at widgets.php and widgets-extensions.php