The often-confusing nvis parameter was removed from the FXListBox constructor. If you desire a non-zero number of visible items, set this by calling the setNumVisible() member function after the list box is constructed.

The retrieveItem() member function has been renamed to getItem(), and the replaceItem() member function has been renamed to setItem().

Added the moveItem() member function, for moving list box items from one position to another.

The setItem(), insertItem(), appendItem() and prependItem() member functions now return an FXint, indicating the changed list box item. This change was made for consistency with similar APIs in FXList and other "list-like" classes.