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use glib::subclass::prelude::*; use super::window::WindowImpl; use ApplicationWindowClass; use WindowClass; pub trait ApplicationWindowImpl: WindowImpl + 'static {} unsafe impl<T: ObjectSubclass + ApplicationWindowImpl> IsSubclassable<T> for ApplicationWindowClass { fn override_vfuncs(&mut self) { <WindowClass as IsSubclassable<T>>::override_vfuncs(self); } }