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

The video tutorial covers setting up a project with a focus on implementing a widget base clause. It discusses the creation of a button and frame clause, highlighting the use of the composite design pattern. The tutorial explains how to handle visibility and the importance of treating UI components uniformly. It concludes with a discussion on the composite design pattern, emphasizing the relationship between components, primitives, and composites.

What are the essential methods that all widgets should have according to the tutorial?

• Paint and set visibility

• Load and unload

• Initialize and destroy

• Add and remove

What is the default visibility value for the widget as mentioned in the tutorial?

• Undefined

• True

• Conditional

• False

Why are the add and remove methods kept empty in the Button class?

• Because they are implemented later

• Because they are not part of the design pattern

• Because Button cannot have any children

• Because they are not needed for any class

What structure is used to display the children of a frame?

• List structure

• Tree-like structure

• Circular structure

• Grid structure

What is the purpose of the display function in the context of the Composite design pattern?

• To uniformly treat frames and buttons

• To only display frames

• To differentiate between frames and buttons

• To only display buttons

In the Composite design pattern, what role does the frame play?

• It acts as a leaf

• It acts as a primitive

• It acts as a composite

• It acts as a standalone component

What issue is highlighted regarding the add and remove methods in the base class?

• They are not implemented in any class

• They must be implemented by the Button class, which cannot have children

• They are redundant and unnecessary

• They are only applicable to the frame class