org.usb4java

Interface HotplugCallback

public interface HotplugCallback

Hotplug callback. When requesting hotplug event notifications, you pass a callback of this type.

Author:

Luca Longinotti (l@longi.li)

Method Summary

Modifier and Type	Method and Description
int	processEvent(Context context, Device device, int event, Object userData) Process a hotplug event.

Method Detail

processEvent

int processEvent(Context context,
                 Device device,
                 int event,
                 Object userData)

Process a hotplug event. This callback may be called by an internal event thread and as such it is recommended the callback do minimal processing before returning. libusb will call this function later, when a matching event had happened on a matching device. It is safe to call either LibUsb.hotplugRegisterCallback(Context, int, int, int, int, int, HotplugCallback, Object, HotplugCallbackHandle) or LibUsb.hotplugDeregisterCallback(Context, HotplugCallbackHandle) from within a callback.

Parameters:

context - Context of this notification.

device - Device this event occurred on.

event - Event that occurred.

userData - user data provided when this callback was registered

Returns:

Whether this callback is finished processing events. Returning 1 will cause this callback to be deregistered.