Structural Design Patterns in Modern C++ - User Interface (UI) Example Overview

What is the main purpose of using the composite design pattern in UI-based applications?

• To allow uniform treatment of frames and UI components

• To simplify the code by removing all UI controls

• To ensure each UI component is painted individually

• To increase the complexity of the application

Which operation is NOT mentioned as one that needs to be performed on frames and their children?

• Resizing

• Painting

• Visibility change

• Data encryption

What problem arises if the composite design pattern is not used?

• The application will not compile

• The UI will not display any components

• The application will run faster

• The client will have to deal with individual objects directly, leading to tight coupling

How does the composite design pattern help in treating frames and UI components?

• By allowing them to be treated uniformly

• By removing all operations on them

• By making them invisible

• By converting them into a single object

What is the role of the 'widget' class in the composite design pattern?

• It represents all kinds of UI controls

• It is a placeholder for unused code

• It is used to delete UI components

• It acts as a database for UI elements

What is a common feature of modern UI frameworks mentioned in the lecture?

• They do not support the composite design pattern

• They require manual positioning of all UI controls

• They automatically arrange their children using different kinds of layouts

• They use a single layout for all applications

Which of the following is NOT a type of UI control mentioned as a leaf class?

• Button

• Database

• Listbox

• Checkbox