API CalendarEventGetNumInvites

From WoWWiki

Retrieves the number of invitees for an event opened with CalendarOpenEvent().

inviteCount = CalendarEventGetNumInvites()

Returns

inviteCount

inviteCount 

Number - The number of invitees to the open event

Details

You must call CalendarOpenEvent() to specify the event with which you are working before calling this function. This function returns the number of invitees for the event.