public delegate void MessageEventHandler(
	Object sender,
	MessageEventArgs messageEventArgs
)

Public Delegate Sub MessageEventHandler ( 
	sender As Object,
	messageEventArgs As MessageEventArgs
)

public delegate void MessageEventHandler(
	Object^ sender, 
	MessageEventArgs^ messageEventArgs
)

type MessageEventHandler = 
    delegate of 
        sender : Object * 
        messageEventArgs : MessageEventArgs -> unit