What is the purpose of embedding subpages in a Qt window?

The purpose of embedding subpages within a window in Qt is to incorporate other UI elements or functional modules into the main window. Embedding subpages into the main window can achieve several goals, such as:

1. Modularization: dividing and organizing different functional modules into subpages to make the code clearer and easier to maintain.
2. Multiple interface switching: Embedding multiple subpages in the main window allows for switching between different interfaces, providing a more diverse user interaction experience.
3. Dynamic updates: By embedding subpages, the content or status of the subpage can be dynamically updated in the main window, enabling real-time feedback and interaction.
4. Reusability: By treating subpages as independent components, they can be reused in different windows or applications, increasing the reusability of the code.

Overall, the purpose of embedding sub-pages in the window is to combine and divide different functional modules, and achieve multi-interface switching and dynamic updating, providing a more flexible and rich user interface.