Method process_ff_erase

src/uinput.rs:358–370

Processes the given [`UInputEvent`] if it is a force feedback erase event, in which case this function will start the force feedback erasure and claim ownership over the [`UInputEvent`] and return a [`FFEraseEvent`] instead. The returned event allows the user to access the effect ID, such that it can free any memory used for the given effect ID. # Panics This function will panic if `event.code(

(&mut self, event: UInputEvent)

    ///
    /// This function will panic if `event.code()` is not `UI_FF_ERASE`.
    pub fn process_ff_erase(&mut self, event: UInputEvent) -> io::Result<FFEraseEvent> {
        assert_eq!(event.code(), UInputCode::UI_FF_ERASE);

        let mut request: sys::uinput_ff_erase = unsafe { std::mem::zeroed() };
        request.request_id = event.value() as u32;
        unsafe { sys::ui_begin_ff_erase(self.fd.as_raw_fd(), &mut request)? };

        request.retval = 0;

        let fd = self.fd.try_clone()?;

        Ok(FFEraseEvent { fd, request })
    }

    /// Read a maximum of `num` events into the internal buffer. If the underlying fd is not
    /// O_NONBLOCK, this will block.