CLASS
A window is a container for widgets.
The window for Linux.
The window's content is an overlay split view.
The "sub content" is the split view's content.
The window's header bar.
The parent application.
The window's title.
A storage for custom data associated with the window.
Initialize a window.
- Parameters:
- title: The window's title.
- id: The window's identifier.
- app: The app.