public event OnNextMonth
Prototype:
OnNextMonth(Sender, EventData)
Parameters
	
		
			Sender
		
		
			the event firing control
		
	 
	
		
			EventData
		
		
			unused for this event
		
	 
 
Description:
Emitted when the user clicks the next month marker on the calendar.
Return value:
This event can close the application by returning MSG_APPLICATION_QUIT. Any other return value will be ignored.