Show post titles within WordPress bootstrap Dropdown menu

Thank you for our reply i solved my problem i used WordPress loop query for showing last fout posts in four column as below

if (!empty($item->divideto_4)) {
    $col = 3;
    $divide_to = 12 / $col; //4

    $my_query = "showposts = ".$divide_to; 
    $my_query = new WP_Query($my_query);
        while ($my_query->have_posts()) : $my_query->the_post();
        $item_output .= '<div class="col-sm-'.$col.'">';
        $item_output .= get_the_title();
        $item_output .= '</div>';
    endwhile;*/
    $YPE_col_content->YPE_lastposts();
}