Gtk.Widget.prototype.set_has_window

function set_has_window(has_window:Boolean):void {
    // Gjs wrapper for gtk_widget_set_has_window()
}

Specifies whether widget has a Gdk.Window of its own. Note that all realized widgets have a non-null "window" pointer (Gtk.Widget.prototype.get_window never returns a null window when a widget is realized), but for many of them it's actually the Gdk.Window of one of its parent widgets. Widgets that do not create a %window for themselves in Gtk.realize must announce this by calling this function with has_window = false.

This function should only be called by widget implementations, and they should call it in their init() function.

Since 2.18