In theory, a list cell could contain any other components, as depicted below.
<listbox width="250px"><listhead> <listheader label="Population"/> <listheader label="Percentage"/> </listhead> <listitem value="A"> <listcell><textbox value="A. Graduate"/></listcell> <listcell label="20%"/> </listitem> <listitem value="B"> <listcell><checkbox label="B. College"/></listcell> <listcell><button label="23%"/></listcell> </listitem> <listitem value="C"> <listcell label="C. High School"/> <listcell><textbox cols="8" value="40%"/></listcell> </listitem> </listbox>
Notes:
Don't use a list box, when a grid is a better choice. The appearances of list boxes and grids are similar, but the list box shall be used only to represent a list of selectable items.
Users are usually confused if a list box contains editable components, such as textbox and checkbox. A common question is what the text, that a user entered in a unselected item, means.
Due to the limitation of the browsers, users cannot select a piece of characters from the text boxes.