start_previewing_theme │ action-hook │ WP 3.4.0

Fires once the Customizer theme preview has started.

Usage

add_action( 'start_previewing_theme', 'wp_kama_start_previewing_theme_action' );

/**
 * Function for `start_previewing_theme` action-hook.
 * 
 * @param WP_Customize_Manager $manager WP_Customize_Manager instance.
 *
 * @return void
 */
function wp_kama_start_previewing_theme_action( $manager ){

	// action...
}

$manager(WP_Customize_Manager)

WP_Customize_Manager instance.

Changelog

Where the hook is called

do_action( 'start_previewing_theme', $this );

Where the hook is used in WordPress

add_action( 'start_previewing_theme', 'wp_clean_theme_json_cache' );