MenuView represents an object in which selecting the menu item with label displays .
MenuView makes the i^(th) item be the one currently selected.
MenuView associates values with successive menu items, and makes the item with value v be the one currently selected.
MenuView takes the menu items' labels to be successive integers.
MenuView[list, Dynamic[s]] takes the selected menu item to be specified by the dynamically updated current value of s, with the value of s being reset if a different menu item is selected.
ImageSizeAllthe overall image size for the display area
LabelStyle {} style specifications for the menu items
With the default option setting ImageSize->All, MenuView always leaves space for the largest of the to be displayed, so that its overall size does not change.