Hello,
Is this post creation or pre-creation? In essenance yes, you can create a Plugin and hook it in. See:
For pre-creation
$dispatcher = JEventDispatcher::getInstance();
JPluginHelper::importPlugin("jevents");
$res = $dispatcher->trigger( 'onBeforeSaveEvent' , array(&$array, &$rrule, $dryrun));
For post-creation:
$dispatcher = JEventDispatcher::getInstance();
JPluginHelper::importPlugin("jevents");
$res = $dispatcher->trigger( 'onAfterSaveEvent' , array(&$vevent, false));
Many thanks
Tony