GetNtmsObjectInformation Function

Artículo
06/09/2011

[Removable Storage Manager is no longer available as of Windows 7 and Windows Server 2008 R2.]

The GetNtmsObjectInformation function returns an object's information structure for the specified object.

Syntax

DWORD GetNtmsObjectInformation(
  __in   HANDLE hSession,
  __in   LPNTMS_GUID lpObjectId,
  __out  LPNTMS_OBJECTINFORMATION lpInfo
);

Parameters

hSession [in]
Handle to the session returned by the OpenNtmsSession function.
lpObjectId [in]
Unique identifier of the RSM object.
lpInfo [out]
Pointer to an NTMS_OBJECTINFORMATION structure that receives the object information.

Return Value

This function returns one of the following values.

Value	Meaning
ERROR_ACCESS_DENIED	NTMS_USE_ACCESS to the object or its container is denied. Other security errors are also possible, but they would indicate a security subsystem error. Windows XP/2000: No access rights are required.
ERROR_INVALID_HANDLE	The session handle is missing or is not valid.
ERROR_INVALID_PARAMETER	The object ID or information structure is missing, or the object information size or object type is not valid.
ERROR_NOT_ENOUGH_MEMORY	An allocation failure occurred during processing.
ERROR_OBJECT_NOT_FOUND	The object ID is not valid.
ERROR_SUCCESS	The function was successful.

Remarks

The information size and type of the information structure must be set correctly in the lpInfo parameter before you use the GetNtmsObjectInformation function.

To avoid unpredictable results, applications must call the GetNtmsObjectInformation function before calling the SetNtmsObjectInformation function. The SetNtmsObjectInformation function updates all writable members of the NTMS_OBJECTINFORMATION structure, therefore the application is responsible for providing a value for all writable members.

The following is the list of objects that require special access rights.

Object	Access
NTMS_CHANGER	Requires NTMS_USE_ACCESS to the library.
NTMS_CHANGER_TYPE	Requires NTMS_USE_ACCESS to the computer.
NTMS_COMPUTER	Requires NTMS_USE_ACCESS to the computer.
NTMS_DRIVE	Requires NTMS_USE_ACCESS to the library.
NTMS_DRIVE_TYPE	Requires NTMS_USE_ACCESS to the computer.
NTMS_IEDOOR	Requires NTMS_USE_ACCESS to the library.
NTMS_IEPORT	Requires NTMS_USE_ACCESS to the library.
NTMS_LIBRARY	Requires NTMS_USE_ACCESS to the library.
NTMS_LIBREQUEST	Requires NTMS_USE_ACCESS to the library.
NTMS_LOGICAL_MEDIA	Requires NTMS_USE_ACCESS to the media pool of the logical media.
NTMS_MEDIA_TYPE	Requires NTMS_USE_ACCESS to the computer.
NTMS_OPREQUEST	Requires NTMS_USE_ACCESS to the computer.
NTMS_PARTITION	Requires NTMS_USE_ACCESS to the media pool of the side.
NTMS_PHYSICAL_MEDIA	Requires NTMS_USE_ACCESS to the media pool.
NTMS_STORAGESLOT	Requires NTMS_USE_ACCESS to the library.

Requirements

Minimum supported client	Windows 2000 Professional
Minimum supported server	Windows 2000 Server
End of client support	Windows Vista
End of server support	Windows Server 2008
Header	Ntmsapi.h
Library	Ntmsapi.lib
DLL	Ntmsapi.dll
Unicode and ANSI names	GetNtmsObjectInformationW (Unicode) and GetNtmsObjectInformationA (ANSI)

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