Event handler on the client JavaScript may contain 3 parameters.
The 1st parameter contains reference to the WebCalendarView object.
The 2nd parameter contains reference to the ig_EventObject object.
The 3rd parameter is painted day. It contains member variables that provide information about painted date, type of day, text, style, etc.
If that event is canceled by oEvent.cancel=true; then default rendering logic is not applied.
Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2