all_themes filter-hook . WP 3.1.0

Filters the full array of WP_Theme objects to list in the Multisite themes list table.

Usage

add_filter( 'all_themes', 'filter_function_name_2198' );
function filter_function_name_2198( $all ){
	// filter...

	return $all;
}

$all(WP_Theme[])

Array of WP_Theme objects to display in the list table.

Where the hook is called

'all'      => apply_filters( 'all_themes', wp_get_themes() ),

Where the hook is used (in WP core)