protected LRESULT onDeviceChangeArrivalOrRemoveComplete(LPARAM lParam, String action) {
DEV_BROADCAST_HDR bhdr = new DEV_BROADCAST_HDR(lParam.longValue());
switch (bhdr.dbch_devicetype) {
case DBT.DBT_DEVTYP_DEVICEINTERFACE: {
// see http://msdn.microsoft.com/en-us/library/windows/desktop/aa363244.aspx
DEV_BROADCAST_DEVICEINTERFACE bdif = new DEV_BROADCAST_DEVICEINTERFACE(bhdr.getPointer());
System.out.println("BROADCAST_DEVICEINTERFACE: " + action);
System.out.println("dbcc_devicetype: " + bdif.dbcc_devicetype);
System.out.println("dbcc_name: " + bdif.getDbcc_name());
System.out.println("dbcc_classguid: "
+ bdif.dbcc_classguid.toGuidString());
break;
}
case DBT.DBT_DEVTYP_HANDLE: {