input::ffi

Function libinput_event_tablet_pad_get_ring_number

pub unsafe extern "C" fn libinput_event_tablet_pad_get_ring_number(
    event: *mut libinput_event_tablet_pad,
) -> u32
Expand description

@ingroup event_tablet_pad

Returns the number of the ring that has changed state, with 0 being the first ring. On tablets with only one ring, this function always returns 0.

@note It is an application bug to call this function for events other than @ref LIBINPUT_EVENT_TABLET_PAD_RING. For other events, this function returns 0.

@param event The libinput tablet pad event @return The index of the ring that changed state

@since 1.3