i move to bcc77 , 32 bits, now i get: Error: Unresolved external '__streams' referenced from \XHARBOUR32\LIB\RDDADS.LIB|ads1 Error: Unable to perform link can i use the same tip? void _streams() {} Yes, you can try it. this is affect my appl? It should not. someone have rddads and ace32 compiled ...