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

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

Added the findItem() member function, to search for combo box items by name.

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

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