int newtListboxDeleteEntry(newtComponent co, int num);
void newtListboxClear(newtComponent co); /* removes all entries from listbox */
void newtListboxGetEntry(newtComponent co, int num, char **text, void **data);
+/* Returns an array of data pointers from items, last element is NULL */
void **newtListboxGetSelection(newtComponent co, int *numitems);
void newtListboxClearSelection(newtComponent co);
void newtListboxSelectItem(newtComponent co, int item,