The WhatsThisButton property returns or sets a value that determines whether the WhatsThisButton appears in the title bar of a Form object during run time. For the WhatsThisButton to appear on your form, set the WhatsThisButton and WhatsThisHelp properties to True; the ControlBox property to True; the BorderStyle property to Fixed Single or Sizable; and the MinButton and MaxButton properties to False, or the BorderStyle property to Fixed Dialog.