typedef enum _PNP_DEVNODE_STATE
{
         DeviceNodeUnspecified = 768,
         DeviceNodeUninitialized = 769,
         DeviceNodeInitialized = 770,
         DeviceNodeDriversAdded = 771,
         DeviceNodeResourcesAssigned = 772,
         DeviceNodeStartPending = 773,
         DeviceNodeStartCompletion = 774,
         DeviceNodeStartPostWork = 775,
         DeviceNodeStarted = 776,
         DeviceNodeQueryStopped = 777,
         DeviceNodeStopped = 778,
         DeviceNodeRestartCompletion = 779,
         DeviceNodeEnumeratePending = 780,
         DeviceNodeEnumerateCompletion = 781,
         DeviceNodeAwaitingQueuedDeletion = 782,
         DeviceNodeAwaitingQueuedRemoval = 783,
         DeviceNodeQueryRemoved = 784,
         DeviceNodeRemovePendingCloses = 785,
         DeviceNodeRemoved = 786,
         DeviceNodeDeletePendingCloses = 787,
         DeviceNodeDeleted = 788,
         MaxDeviceNodeState = 789
} PNP_DEVNODE_STATE;

Windows Vista Kernel Structures