// wdm.h

typedef enum _IO_NOTIFICATION_EVENT_CATEGORY {
  EventCategoryReserved,
  EventCategoryHardwareProfileChange,
  EventCategoryDeviceInterfaceChange,
  EventCategoryTargetDeviceChange,
  EventCategoryKernelSoftRestart
} IO_NOTIFICATION_EVENT_CATEGORY;
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Windows Driver Kit DDI reference (ne-wdm-io_notification_event_category)

IO_NOTIFICATION_EVENT_CATEGORY enumeration

Description

Specifies the category of PnP event for which the callback routine is being registered. Used in IoRegisterPlugPlayNotification.

Constants

`EventCategoryReserved`

Reserved for system use.

`EventCategoryHardwareProfileChange`

PnP events in this category include query-change (GUID_HWPROFILE_QUERY_CHANGE), change-complete (GUID_HWPROFILE_CHANGE_COMPLETE), and change-cancel (GUID_HWPROFILE_CHANGE_CANCELLED) of a hardware profile.

`EventCategoryDeviceInterfaceChange`

PnP events in this category include the arrival (enabling) of a new instance of a device interface class (GUID_DEVICE_INTERFACE_ARRIVAL), or the removal (disabling) of an existing device interface instance (GUID_DEVICE_INTERFACE_REMOVAL).

`EventCategoryTargetDeviceChange`

PnP events in this category include events related to removing a device: the device's drivers received a query-remove IRP (GUID_TARGET_DEVICE_QUERY_REMOVE), the drivers completed a remove IRP (GUID_TARGET_DEVICE_REMOVE_COMPLETE), or the drivers received a cancel-remove IRP (GUID_TARGET_DEVICE_REMOVE_CANCELLED). This category is also used for custom notification events.

`EventCategoryKernelSoftRestart`