The QPtrDict class is a template class that provides a dictionary based on void* keys. ... QPtrDict  ( const QPtrDict<type> & dict )  . ... void  insert  ( void * key, const type * item )  . void  replace  ( void * key, const type * item )  . ... A dictionary is a collection that associates an item with a key. ... The dictionary in our example maps int* keys to char* items. ... Equivalent to: QPtrDict <char> dict; ... if ( dict. find (key) ) dict. remove ( key ); dict. insert ( key, item ); . ...