pub trait DirectControlBindingExt: 'static {
    fn is_absolute(&self) -> bool;
fn control_source(&self) -> Option<ControlSource>;
fn set_control_source<P: IsA<ControlSource>>(
        &self,
        control_source: Option<&P>
    );
fn connect_control_source_notify<F: Fn(&Self) + Send + Sync + 'static>(
        &self,
        f: F
    ) -> SignalHandlerId; }

Required methods

Implementors