The book introduces techniques and skills used in Delphi program development in total 19 chapters with contents covering window and interface design, control application, data process technique, graphics technique, multimedia technique, file system, operation system and related Window program, regedit, database technique, related SQL queries technique, printing and statement technique, table technique, hardware development technique, network development technique, Web programming, data structure and algorithm, Delphi language basic, encode/safety and software registration, practical tool, program packaging. It provides more than 500 cases with strong practicability. The book is apt for Delphi programming personnel and students of colleges.