Function bevy_window::close_when_requested

pub fn close_when_requested(
    commands: Commands<'_, '_>,
    closed: EventReader<'_, '_, WindowCloseRequested>
)

Close windows in response to WindowCloseRequested (e.g. when the close button is pressed).

This system is added by the WindowPlugin in the default configuration. To disable this behaviour, set close_when_requested (on the WindowPlugin) to false. Ensure that you read the caveats documented on that field if doing so.