fn handle_release_key_cleaner(
shape: &LayoutData,
submission: &mut Submission,
ui: Option<&UIBackend>,
time: Timestamp,
manager: Option<(&State, Threaded<Application>)>,
button_pos: &ButtonPosition
) -> Action
fn handle_release_key_cleaner(
shape: &LayoutData,
submission: &mut Submission,
ui: Option<&UIBackend>,
time: Timestamp,
manager: Option<(&State, Threaded<Application>)>,
button_pos: &ButtonPosition
) -> Action