Visual Basic WMI System Services
Obtaining Baseboard (Motherboard) Information using WMI
     
Posted:   Monday March 25, 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
     

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
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.


The Win32_BaseBoard WMI class represents a baseboard (also known as a motherboard or system board). However, the information returned is specific to the manufacturer, and may be extremely sparse (i.e. my system returns only the product, manufacturer, power on state, name, caption and description values.) Information that could be used as a unique identifier is not returned.

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.

 BAS Module Code
None.

 Form Code
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:

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.
''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
'/* 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 , , "Product"
      .ColumnHeaders.Add , , "Manufacturer"
      .View = lvwReport
      .Sorted = False
   End With
   
   Command1.Caption = "BaseBoard Info"

End Sub


Private Sub Command1_Click()

   ListView1.ListItems.Clear
   Call wmiBaseBoardInfo
   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 wmiBaseBoardInfo()

   Dim BaseBoardSet As SWbemObjectSet
   Dim bb As SWbemObject
   Dim itmx As ListItem
   
   Set BaseBoardSet = GetObject("winmgmts:{impersonationLevel=impersonate}"). _
                                 InstancesOf("Win32_BaseBoard")
      
   On Local Error Resume Next
   
   For Each bb In BaseBoardSet
   
      Set itmx = ListView1.ListItems.Add(, , bb.Product)
      itmx.SubItems(1) = bb.Manufacturer
   
   Next

End Sub
 Comments
All information returned in the Win32_BaseBoard class (note that some systems may not return information in all class properties):
   
string Caption
string ConfigOptions[]
string CreationClassName
real32 Depth
string Description
real32 Height
boolean HostingBoard
boolean HotSwappable
datetime InstallDate
string Manufacturer
string Model
string Name
string OtherIdentifyingInfo
string PartNumber
boolean PoweredOn
string Product
boolean Removable
boolean Replaceable
string RequirementsDescription
boolean RequiresDaughterBoard
string SerialNumber
string SKU
string SlotLayout
boolean SpecialRequirements
string Status
string Tag
string Version
real32 Weight
real32 Width

 
 

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