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OCR: COMPUTER PROGRAMMING 685 A visual development environment is a powerful tool for programming soft- ware applications for GUI environments, such as Windows, Linux desktops, and Mac os Most GUI applications are event-driven, which means that when launched, the program's interface appears on the screen and waits for the user initiate an event by clicking menu, dragging an object -nop ble-clicking an icon typing text, or clicking button. The fact that the sequence of user actions cannot be predicted introduces level com- plexity that doesn't fit well with traditional programming languages which tend to approach programs as a fixed sequence of procedures Visual development environments have spawned an approach to program- ming that is sometimes referred to as the event t-driven paradigm, in whi ...