This widget can be used to display disk usage. A minimum size of 30x11 is imposed. Display an horizontal scrollbar. The height property is ignored and a minimum width is imposed. The width should be at least the range plus 37 if all values are to be selectable e.g. a min of 0 and max of 10 has a range of 11 and therefore should have a minimum width of 48.
List lets user to choose between various options.
First visible option. All menus are displayed at the top of window. A minimum height of three items is imposed and the width is made to be at least 108. Display a menu whom lets user to choose a option. Items of type Menu are layed out from left to right along the top of the window.