Function on_pre_window_moved 

pub fn on_pre_window_moved(
    child: impl IntoUiNode,
    handler: Box<dyn FnMut(&WindowChangedArgs) -> HandlerResult + Send>,
) -> UiNode

P On window position changed.

Route

This event property uses the preview route, that is, the handler is called before the children widget handlers and before the $pn_ident handlers.