CHANGER_READ_ELEMENT_STATUS - NtDoc

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

typedef struct _CHANGER_READ_ELEMENT_STATUS {
  CHANGER_ELEMENT_LIST ElementList;
  BOOLEAN              VolumeTagInfo;
} CHANGER_READ_ELEMENT_STATUS, *PCHANGER_READ_ELEMENT_STATUS;
View the official Windows Driver Kit DDI reference
// winioctl.h

typedef struct _CHANGER_READ_ELEMENT_STATUS {
  CHANGER_ELEMENT_LIST ElementList;
  BOOLEAN              VolumeTagInfo;
} CHANGER_READ_ELEMENT_STATUS, *PCHANGER_READ_ELEMENT_STATUS;
View the official Win32 API reference

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Windows Driver Kit DDI reference (ns-ntddchgr-_changer_read_element_status)

_CHANGER_READ_ELEMENT_STATUS structure

Description

The CHANGER_READ_ELEMENT_STATUS structure is used in conjunction with the IOCTL_CHANGER_GET_ELEMENT_STATUS request to retrieve the status of all elements or the status of a specified number of elements of a particular type.

Members

ElementList

Specifies the element type and the number of elements of that type for which to report status in a structure of type CHANGER_ELEMENT_LIST. This member contains a list of structures of type CHANGER_ELEMENT. The ElementType member of each CHANGER_ELEMENT structure in this list can be assigned a value of ChangerDrive, ChangerSlot, ChangerTransport, ChangerIEPort, or AllElements.

VolumeTagInfo

Indicates, when TRUE, that volume tag information should be reported in addition to element status. When FALSE, it indicates that only element status should be reported. A volume tag can be a bar code or an application-defined value assigned using ChangerQueryVolumeTags. This member is applicable only if either CHANGER_BAR_CODE_SCANNER_INSTALLED or CHANGER_VOLUME_IDENTIFICATION is set in the Features0 member of the GET_CHANGER_PARAMETERS structure.

See also

CHANGER_ELEMENT

CHANGER_ELEMENT_LIST

ChangerGetElementStatus

GET_CHANGER_PARAMETERS

IOCTL_CHANGER_GET_ELEMENT_STATUS

View the official Windows Driver Kit DDI reference

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Win32 API reference (ns-winioctl-changer_read_element_status)

CHANGER_READ_ELEMENT_STATUS structure

Description

Contains information that the IOCTL_CHANGER_GET_ELEMENT_STATUS control code needs to determine the elements whose status is to be retrieved.

Members

ElementList

A CHANGER_ELEMENT_LIST structure that contains an array of structures that represents the range of elements for which information is to be retrieved. The ElementType member of each structure can be one of the following values: ChangerDrive, ChangerSlot, ChangerTransport, ChangerIEPort, or AllElements.

VolumeTagInfo

If this member is TRUE, volume tag information is to be retrieved. Otherwise, no volume information is retrieved. A volume tag can be a bar code or an application-defined value. This member is valid only if the Features0 member of the GET_CHANGER_PARAMETERS structure is CHANGER_BAR_CODE_SCANNER_INSTALLED or CHANGER_VOLUME_IDENTIFICATION.

See also

CHANGER_ELEMENT_LIST

IOCTL_CHANGER_GET_ELEMENT_STATUS

View the official Win32 API reference

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