WordPress at a glance
filter is not described

dashboard_recent_posts_query_args filter-hook . WP 4.2.0

Filters the query arguments used for the Recent Posts widget.

Usage

add_filter( 'dashboard_recent_posts_query_args', 'filter_function_name_1901' );
function filter_function_name_1901( $query_args ){
	// filter...

	return $query_args;
}
$query_args(array)
The arguments passed to WP_Query to produce the list of posts.

Where the hook is called

wp_dashboard_recent_posts()
wp-admin/includes/dashboard.php 826
$query_args = apply_filters( 'dashboard_recent_posts_query_args', $query_args );

Where the hook is used (in WP core)

Does not used.