WindowTitle
class WindowTitle(val adwWindowTitlePointer: <Error class: unknown class><<Error class: unknown class>>)(source)
A helper widget for setting a window's title and subtitle.
AdwWindowTitle shows a title and subtitle. It's intended to be used as the title child of class@Gtk.HeaderBar or class@HeaderBar.
CSS nodes
AdwWindowTitle has a single CSS node with name windowtitle.