gtk/application.go
func (v *Application) GetWindowByID(id uint) *Window {
	c := C.gtk_application_get_window_by_id(v.native(), C.guint(id))
	if c == nil {
		return nil
	}
	return wrapWindow(glib.Take(unsafe.Pointer(c)))
}
func (v *Application) GetWindowByID(id uint) *Window {
	c := C.gtk_application_get_window_by_id(v.native(), C.guint(id))
	if c == nil {
		return nil
	}
	return wrapWindow(glib.Take(unsafe.Pointer(c)))
}
// GetWindowByID is a wrapper around gtk_application_get_window_by_id().