SetNtmsDeviceChangeDetection Function

Artikel
06/09/2011

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

The SetNtmsDeviceChangeDetection function sets one or more target devices for change detection.

Syntax

DWORD SetNtmsDeviceChangeDetection(
  __in  HANDLE hSession,
  __in  HANDLE hDetectHandle,
  __in  LPNTMS_GUID lpObjectId,
  __in  DWORD dwType,
  __in  DWORD dwCount
);

Parameters

hSession [in]
Handle to the session returned by the OpenNtmsSession function.
hDetectHandle [in]
Device change detection handle from BeginNtmsDeviceChangeDetection, or NULL for a single poll.
lpObjectId [in]
Object identifier for the target device. This parameter can be one or more library, media type, or physical media GUIDs. All GUIDs must be the same type.
dwType [in]
Type of object identifiers specified in the lpObjectId parameter. This parameter can be one of the following values from the NtmsObjectsTypes enumeration type: NTMS_LIBRARY, NTMS_MEDIA_TYPE, or NTMS_PHYSICAL_MEDIA.
dwCount [in]
Number of object identifiers in lpObjectId.

Return Value

This function returns one of the following values.

Value	Meaning
ERROR_INVALID_HANDLE	The session or detection handle is not valid.
ERROR_INVALID_PARAMETER	The object type is not valid.
ERROR_INVALID_LIBRARY	The specified library was not found.
ERROR_INVALID_MEDIA	The specified media or type was not found.
ERROR_SUCCESS	The operator request has been canceled.

Remarks

The device can be specified directly by passing library GUIDs or indirectly by passing physical media or media type GUIDs. When using the indirect specification, all stand-alone libraries that could contain the media or media type are detected. All devices specified continue to be detected until the device change detection handle is closed using the EndNtmsDeviceChangeDetection function.

This function can also be used to poll for changed media in the specified devices. This is typically used by a UI when opening a leaf node or implementing a refresh option.

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

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