Function libusb1_sys::libusb_hotplug_register_callback

pub unsafe extern "C" fn libusb_hotplug_register_callback(
    ctx: *mut libusb_context, 
    events: libusb_hotplug_event, 
    flags: libusb_hotplug_flag, 
    vendor_id: c_int, 
    product_id: c_int, 
    dev_class: c_int, 
    cb_fn: libusb_hotplug_callback_fn, 
    user_data: *mut c_void, 
    callback_handle: *mut libusb_hotplug_callback_handle
) -> c_int