Function wlc_sys_with_elogind::wlc_event_loop_add_timer

pub unsafe extern "C" fn wlc_event_loop_add_timer(
    cb: Option<unsafe extern "C" fn(_: *mut c_void) -> c_int>, 
    userdata: *mut c_void
) -> *mut wlc_event_source

Add timer to event loop. Return value of callback is unused, you should return 0.