Event Driven Programming in Visual Basic

The video introduces event-driven programming using Visual Basic, noting that the concept applies to other languages like C# as well. It contrasts this with Python, where event-driven programming in a game context would be different. Crucially, in event-driven programming, there is no main function that executes sequentially upon running the program.

When the program runs, a graphical user interface (GUI) window appears, but nothing happens until the user interacts with it. The example GUI features a combo box and a button. The code has two procedures that respond to these interactions.

Clicking the button resets the combo box to 'please select an item'. Changing an item in the combo box triggers a message indicating which item was selected. This is handled by 'if' statements based on the selected index (e.g., index 0 for the first item, 1 for the second, and so on).

The demonstration shows that the program remains inactive until a user event occurs. Clicking the button or changing the combo box item triggers specific code (event handlers). This illustrates that actions in event-driven programming only happen when the user performs an action that triggers one of these handlers.