SWbemRefreshableItem object

Стаття
03/03/2021

The SWbemRefreshableItem object represents a single item in an SWbemRefresher object. An SWbemRefreshableItem object is obtained through the Add and AddEnum methods of SWbemRefresher. This object cannot be created by the VBScript CreateObject call.

Members

The SWbemRefreshableItem object has these types of members:

Methods
Properties

Methods

The SWbemRefreshableItem object has these methods.

Method	Description
Remove	Removes the SWbemRefreshableItem object from the parent SWbemRefresher object.

Properties

The SWbemRefreshableItem object has these properties.

Property	Access type	Description
Index	Read/write	Index of the item in its parent SWbemRefresher object.
IsSet	Read/write	Indicates whether the SWbemRefreshableItem object represents a single object or an object set.
Object	Read/write	Represents a single SWbemObject object that is refreshed.
ObjectSet	Read/write	Represents the object set to be refreshed.
Refresher	Read-only	Represents the parent SWbemRefresher object which contains the SWbemRefreshableItem object.

Remarks

The VBScript method GetObject cannot be used to create SWbemRefreshableItem objects directly.

Examples

The following script illustrates the creation of an SWbemRefresher object and the addition of single object and enumerator SWbemRefreshableItem to it.

' Get some namespace connections
set cimv2 = GetObject("winmgmts:root\cimv2")
set default = GetObject("winmgmts:root\default")    

' Create a refresher
set refresher = CreateObject("WbemScripting.SWbemRefresher")

' Add a single object to the refresher.
' The @ is used because this is a singleton 
' system class so only one instance exists.
set item1 = refresher.Add (default, "__CIMOMIdentification=@").Object
MsgBox "WMI Version " item1
' Add an enumerator to the refresher.
' Note that the SWbemRefreshableItem.ObjectSet 
' property must be used to designate
' this as an object set rather than a single object.
set item2 = refresher.AddEnum (cimv2, "Win32_Process").ObjectSet

' Loop three times, refreshing the items

For I= 1 To 3
MsgBox "Refresh number " & I
refresher.Refresh

' Iterate through the collection of
' processes in item2 with name of wscript
    For each process in item2
        If process.name = "wscript.exe" then
        MsgBox "Process " & process.Name & _
           " Page Faults " & process.PageFaults
        End If
    Next 
Next

' Clear out the refresher
refresher.DeleteAll 

' The following should return 0
MsgBox "Number of items in Refresher after DeleteAll " _
    & refresher.Count

Requirements

Requirement	Value
Minimum supported client	Windows Vista
Minimum supported server	Windows Server 2008
Header	Wbemdisp.h
Type library	Wbemdisp.tlb
DLL	Wbemdisp.dll
CLSID	CLSID_SWbemRefreshableItem
IID	IID_ISWbemRefreshableItem

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