public delegate void HeaderClickEventHandler(
	Object sender,
	int index,
	MouseEventArgs e
)

Public Delegate Sub HeaderClickEventHandler ( 
	sender As Object,
	index As Integer,
	e As MouseEventArgs
)

public delegate void HeaderClickEventHandler(
	Object^ sender, 
	int index, 
	MouseEventArgs^ e
)

type HeaderClickEventHandler = 
    delegate of 
        sender : Object * 
        index : int * 
        e : MouseEventArgs -> unit