eseményvezérlés

Eseményvezérlés, often translated as event-driven programming or event-driven architecture, is a programming paradigm or software design pattern where the flow of the program is determined by events. Events can be user actions like mouse clicks or keyboard input, sensor outputs, or messages from other programs or threads.

In an event-driven system, the program typically waits for an event to occur. When an event is detected, a specific piece of code, known as an event handler or callback function, is executed to respond to that event. This handler might update the user interface, process data, trigger other events, or perform any other necessary action.

This contrasts with traditional procedural programming, where the program executes a sequence of instructions in a predetermined order. Event-driven systems are particularly well-suited for applications that require responsiveness and interactivity, such as graphical user interfaces (GUIs), real-time systems, and network applications.

Key components of an event-driven system include an event loop, which continuously monitors for events, and event handlers, which are registered to respond to specific types of events. The decoupling of event sources from event handlers allows for flexible and modular system design. This approach can lead to more dynamic and scalable applications.