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| Visual Basic
WMI System Services Obtaining Temperature Probe Information using WMI |
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| Posted: | Monday March 05, 2002 |
| Updated: | Monday November 28, 2011 |
| Applies to: | VB5, VB6 |
| Developed with: | VB6, Windows XP |
| OS restrictions: | Windows NT, 2000, XP. See Prerequisites below. |
| Author: | VBnet - Randy Birch |
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Related: |
Win32_BaseBoard: WMI Baseboard (Motherboard) Info Win32_BIOS: WMI System BIOS Information Win32_Processor: WMI Processor Information Win32_CacheMemory: WMI System Cache Memory Info Win32_TemperatureProbe: WMI Temperature Probe Info |
| Prerequisites | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Windows Script Host is built into Microsoft Windows 98, 2000, ME and XP.
If you are running Windows 95 or NT4, you can download Windows Script
Host from the Microsoft Windows Script Technologies Web site at
http://msdn.microsoft.com/scripting/.
Some information is not returned on non-NT-based systems. A reference set in Projects / References to the Microsoft WMI Scripting Library. Please note: some systems may not report temperature information. Therefore, while informative I do not recommend using this code in a mission-critical application unless you are assured the target machines will return this information, and regardless of application appropriate error handling should be employed. |
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The Win32_TemperatureProbe WMI class represents the properties of a temperature sensor (electronic thermometer). (Can't believe I missed the 'e' in 'probe' in the button caption.) This demo and illustration only show some of the available information from the class. For a complete listing see the table in the Comments section below. Note that some systems may not return information in all class properties. |
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| To a form add a command button (Command1) and a listview (Listview1). Set a reference in Projects / References to the Microsoft WMI Scripting Library, and add the following to the form: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Option Explicit '''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' ' Copyright ©1996-2011 VBnet/Randy Birch, All Rights Reserved. ' Some pages may also contain other copyrights by the author. '''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' ' Distribution: You can freely use this code in your own ' applications, but you may not reproduce ' or publish this code on any web site, ' online service, or distribute as source ' on any media without express permission. '''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' '/* Below used for listview column auto-resizing
Private Const LVM_FIRST As Long = &H1000
Private Const LVM_SETCOLUMNWIDTH As Long = (LVM_FIRST + 30)
Private Const LVSCW_AUTOSIZE As Long = -1
Private Const LVSCW_AUTOSIZE_USEHEADER As Long = -2
Private Declare Function SendMessage Lib "user32" _
Alias "SendMessageA" _
(ByVal hwnd As Long, _
ByVal wMsg As Long, _
ByVal wParam As Long, _
lParam As Any) As Long
Private Sub Form_Load()
With ListView1
.ListItems.Clear
.ColumnHeaders.Clear
.ColumnHeaders.Add , , "Desc"
.ColumnHeaders.Add , , "Name"
.ColumnHeaders.Add , , "Device ID"
.ColumnHeaders.Add , , "Status"
.ColumnHeaders.Add , , "Resolution"
.ColumnHeaders.Add , , "Tolerance"
.ColumnHeaders.Add , , "Accuracy"
.View = lvwReport
.Sorted = False
End With
Command1.Caption = "Temperature Probe Info"
End Sub
Private Sub Command1_Click()
ListView1.ListItems.Clear
Call wmiProbeInfo
Call lvAutosizeControl(ListView1)
End Sub
Private Sub lvAutosizeControl(lv As ListView)
Dim col2adjust As Long
'/* Size each column based on the maximum of
'/* EITHER the columnheader text width, or,
'/* if the items below it are wider, the
'/* widest list item in the column
For col2adjust = 0 To lv.ColumnHeaders.Count - 1
Call SendMessage(lv.hwnd, _
LVM_SETCOLUMNWIDTH, _
col2adjust, _
ByVal LVSCW_AUTOSIZE_USEHEADER)
Next
End Sub
Private Sub wmiProbeInfo()
Dim wmiObjSet As SWbemObjectSet
Dim obj As SWbemObject 'CurrentProbe
Dim itmx As ListItem
On Local Error Resume Next
Set wmiObjSet = GetObject("winmgmts:{impersonationLevel=impersonate}"). _
InstancesOf("Win32_TemperatureProbe")
For Each obj In wmiObjSet
Set itmx = ListView1.ListItems.Add(, , obj.Description)
itmx.SubItems(1) = obj.Name
itmx.SubItems(2) = obj.DeviceID
itmx.SubItems(3) = obj.Status
itmx.SubItems(4) = obj.Resolution
itmx.SubItems(5) = obj.Tolerance
itmx.SubItems(6) = obj.Accuracy / obj.Resolution / obj.Tolerance & " %"
Next
End Sub |
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| Comments | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
All information returned in the Win32_TemperatureProbe class (note that
some systems may not return information in all class properties):
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Copyright ©1996-2011 VBnet and Randy Birch. All Rights Reserved. |
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