QWindowbased

QWindowbased is a term that refers to applications or components developed using the Qt framework that are primarily based on QWindow for their user interface. QWindow is a low-level Qt class that provides a handle to a native window on the operating system. Unlike QWidget, which is a more abstract and higher-level UI element, QWindow represents the actual window surface on the screen and manages its properties such as position, size, and visibility.

Applications built with QWindowbased approaches often leverage QWindow for direct interaction with the underlying windowing system. This can be beneficial for certain types of applications, such as embedded systems, games, or applications requiring direct OpenGL or Vulkan rendering, where finer control over the window's lifecycle and native integration is desired. It allows for more flexible and potentially more performant graphics rendering by bypassing some of the abstractions present in the QWidget system.

When developing with QWindowbased, developers typically work with subclasses of QWindow or embed QWindow instances within their application structure. While QWindow itself doesn't provide widgets like buttons or layouts, it serves as the foundational element onto which other rendering surfaces or custom UI elements can be attached. This architecture is distinct from the traditional QWidget-based approach, which relies on a hierarchy of widget objects to construct the user interface.