Function wlc_sys::wlc_set_touch_cb

pub unsafe extern "C" fn wlc_set_touch_cb(
    cb: Option<unsafe extern "C" fn(_: wlc_handle, _: u32, _: *const wlc_modifiers, _: wlc_touch_type, _: i32, _: *const wlc_point) -> bool>
)

Touch event was triggered, view handle will be zero if there was no focus. Return true to prevent sending the event to clients.