CM_Get_DevNode_Property_Keys function (cfgmgr32.h)

The CM_Get_DevNode_Property_Keys function retrieves an array of the device property keys that represent the device properties that are set for a device instance.

Syntax

CMAPI CONFIGRET CM_Get_DevNode_Property_Keys(
  [in]            DEVINST    dnDevInst,
  [out, optional] DEVPROPKEY *PropertyKeyArray,
  [in, out]       PULONG     PropertyKeyCount,
  [in]            ULONG      ulFlags
);

Parameters

[in] dnDevInst

Device instance handle that is bound to the local machine.

[out, optional] PropertyKeyArray

Pointer to a buffer that receives an array of DEVPROPKEY-typed values, where each value is a device property key that represents a device property that is set for the device instance. The pointer is optional and can be NULL.

[in, out] PropertyKeyCount

The size, in DEVPROPKEY-typed units, of the PropertyKeyArray buffer. If PropertyKeyArray is set to NULL, *PropertyKeyCount must be set to zero. As output, If PropertyKeyArray is not large enough to hold all the property key data, CM_Get_DevNode_Property_Keys returns the count of the keys in *PropertyKeyCount.

[in] ulFlags

Reserved. Must be set to zero.

Return value

If the operation succeeds, the function returns CR_SUCCESS. Otherwise, it returns one of the CR_-prefixed error codes defined in Cfgmgr32.h.

Remarks

CM_Get_DevNode_Property_Keys is part of the Unified Device Property Model.

Requirements

See also

SetupDiGetDevicePropertyKeys