17.1.1. Key Components

Try these first

1. 1.

   What is an event in programming?

   Hint

   Think of actions like clicks and key presses.

2. 2.

   Define an event handler.

   Hint

   What do we call it when a function responds to a user's action?

3. 3.

   What does an event represent in programming?

   • A sequence of instructions
   • An action recognized by the program
   • A predefined variable

   Hint

   Think about user interactions and system messages.

4. 4.

   True or False: An event loop continuously monitors for events and processes them.

   • True
   • False

   Hint

   It never stops running unless the program is terminated.

5. 5.

   Design a simple event-driven program structure where clicking a button triggers an alert, including the event, handler, and loop.

   Hint

   Think about how GUI frameworks handle user interactions.

6. 6.

   Critique a code snippet of an event-driven program that lacks a well-defined event loop. Identify potential issues.

   Hint

   What happens if the event handlers can’t be reached?