After creating the any function in Function.php we cannot add short code in to the wordpress widgets, after release of wordpress 3.1 version. We are unable to fetch the wordpress Short code in to the widgets bar.

Still you are looking to add short codes in to the wordpress widgets use below code. Put this code given into your wordpress theme Function.php File.

add_filter(‘widget_text’, ‘do_shortcode’);

After adding this code in theme function.php file you can add Short code in wordpress widgets.