'宣言 Public Delegate Sub UserActionEventHandler( _ ByVal sender As System.Object, _ ByVal e As UserActionEventArgs _ )
'使用法 Dim instance As New UserActionEventHandler(AddressOf HandlerMethod)
public delegate void UserActionEventHandler( System.object sender, UserActionEventArgs e )
パラメータ
- sender
 - The source of the event (usually an instance of the C1PreviewPane class).
 - e
 - A UserActionEventArgs that contains the event data.