WDF_RETRIEVE_CHILD_FLAGS - NtDoc

Native API online documentation, based on the System Informer (formerly Process Hacker) phnt headers 
// wdfchildlist.h

typedef enum _WDF_RETRIEVE_CHILD_FLAGS {
  WdfRetrieveUnspecified = 0x0000,
  WdfRetrievePresentChildren = 0x0001,
  WdfRetrieveMissingChildren = 0x0002,
  WdfRetrievePendingChildren = 0x0004,
  WdfRetrieveAddedChildren = (WdfRetrievePresentChildren | WdfRetrievePendingChildren),
  WdfRetrieveAllChildren = (WdfRetrievePresentChildren | WdfRetrievePendingChildren | WdfRetrieveMissingChildren)
} WDF_RETRIEVE_CHILD_FLAGS;
View the official Windows Driver Kit DDI reference

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Windows Driver Kit DDI reference (ne-wdfchildlist-_wdf_retrieve_child_flags)

_WDF_RETRIEVE_CHILD_FLAGS enumeration

Description

[Applies to KMDF only]

The WDF_RETRIEVE_CHILD_FLAGS enumeration defines flags that a driver can set before calling WdfChildListBeginIteration.

Constants

WdfRetrieveUnspecified:0x0000

Reserved for internal use only.

WdfRetrievePresentChildren:0x0001

Calls to WdfChildListRetrieveNextDevice will retrieve child devices for which a framework device object exists.

WdfRetrieveMissingChildren:0x0002

Calls to WdfChildListRetrieveNextDevice will retrieve child devices that are marked as missing.

WdfRetrievePendingChildren:0x0004

Calls to WdfChildListRetrieveNextDevice will retrieve child devices that the driver has reported as present, but for which a framework device object has not been created (because the framework has not called the driver's EvtChildListCreateDevice callback function).

WdfRetrieveAddedChildren:(WdfRetrievePresentChildren | WdfRetrievePendingChildren)

Calls to WdfChildListRetrieveNextDevice will retrieve child devices that are present or pending.

WdfRetrieveAllChildren:(WdfRetrievePresentChildren | WdfRetrievePendingChildren | WdfRetrieveMissingChildren)

Calls to WdfChildListRetrieveNextDevice will retrieve child devices that are present, pending, or missing.

Remarks

Before calling WdfChildListBeginIteration, your driver must set WDF_RETRIEVE_CHILD_FLAGS-typed flags in a WDF_CHILD_LIST_ITERATOR structure.

See also

EvtChildListCreateDevice

WDF_CHILD_LIST_ITERATOR

WdfChildListBeginIteration

WdfChildListRetrieveNextDevice

View the official Windows Driver Kit DDI reference

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