Get Monitor Information

spiderblues · November 11, 2005

Hi all,

I need to get the Monitor Serial and Type, but when I read the WMI Objects, I can't find these informations.

Now I found a VB-programm that shows me exactly what I need, but I don't understand, what the VB is doing there: http://www.Planet-Source-Code.com/vb/scrip...=59528&lngWId=1

Is it possible to do the same with AutoIt?

Would be great to get your help...

spider

GaryFrost · November 11, 2005

It's just getting the information from the registry

depending on OS it enumerates the registry info

From the vb form.

If GetOSData() = "XP" Then

strDisplayBaseKey = "SYSTEM\CurrentControlSet\Enum\DISPLAY"

Else

strDisplayBaseKey = "ENUM\Monitor"

End If

spiderblues · November 11, 2005

ok, I found the entries in the registy, but how can i convert these values in readable strings?

bboysza · November 11, 2005

ok, I found the entries in the registy, but how can i convert these values in readable strings?

From the help file...

$var = RegRead("HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion", "ProgramFilesDir")
MsgBox(4096, "Program files are in:", $var)

spiderblues · November 11, 2005

Yes, I know how to read a Reg value, but what I can read is:

Posted Image

The VB-Programm shows:

Posted Image

How do I get these values???????????????

bboysza · November 11, 2005

Yes, I know how to read a Reg value, but what I can read is:
The VB-Programm shows:
How do I get these values???????????????

Ah - well I think what you're looking at in the registry is just driver information for that windows device. Whereas in the VB app, DDC was used perhaps by WMI to pull data directly from the device itself.

spiderblues · November 11, 2005

I already checked the WMI Win32_DisplayConfiguration and Win32_DesktopMonitor but there are the same informations as in the registry.

I guess these informations are coded, but my know-how is too bad, to understand...

spiderblues · November 11, 2005

I would be happy if I could...

Trystian · November 12, 2005

I was bored, so I converted it using AutoIT 3.1.1.87, with TWO issues, denoted by inline comments: ; (*** TRYSTIANSKY: <ISSUE> ***).....making my conversion worthless until those two issues are resolved.

MonitorEDID.au3

;''''''''''''''''''''''''''
; Monitor EDID Information'
;''''''''''''''''''''''''''
;*****************************************************************************************
;17 June 2004
;coded by Michael Baird
;
;11 November 2005
;ported to AutoIT 3.1.1.87 by Trystian Sky
;
;and released under the terms of GNU open source license agreement
;(that is of course if you CAN release code that uses WMI under GNU)
;
;Please give me credit if you use my code

;this code is based on the EEDID spec found at http://www.vesa.org
;and by my hacking around in the windows registry
;the code was tested on WINXP,WIN2K and WIN2K3
;it should work on WINME and WIN98SE
;It should work with multiple monitors, but that hasn't been tested either.
;*****************************************************************************************
;
;*****************************************************************************************
;It should be noted that this is not 100% reliable
;I have witnessed occasions where for one reason or another windows
;can't or doesn't read the EDID info at boot (example would be someone
;booting with the monitor turned off) and so windows changes the active
;monitor to "Default_Monitor"
;Another reason for reliability problems is that there is no
;requirement in the EDID spec that a manufacture include the
;serial number in the EDID data AND only EDIDv1.2 and beyond
;have a requirement that the EDID contain a descriptive
;model name
;That being said, here goes....
;*****************************************************************************************
;
;*****************************************************************************************
;Monitors are stored in HKLM\SYSTEM\CurrentControlSet\Enum\DISPLAY\
;
;Unfortunately, not only monitors are stored here Video Chipsets and maybe some other stuff
;is also here.
;
;Monitors in "HKLM\SYSTEM\CurrentControlSet\Enum\DISPLAY\" are organized like this:
; HKLM\SYSTEM\CurrentControlSet\Enum\DISPLAY\<VESA_Monitor_ID>\<PNP_ID>\
;Since not only monitors will be found under DISPLAY sub key you need to find out which
;devices are monitors.
;This can be deterimined by looking at the value "HardwareID" located
;at HKLM\SYSTEM\CurrentControlSet\Enum\DISPLAY\<VESA_Monitor_ID\<PNP_ID>\
;if the device is a monitor then the "HardwareID" value will contain the data "Monitor\<VESA_Monitor_ID>"
;
;The next difficulty is that all monitors are stored here not just the one curently plugged in.
;So, if you ever switched monitors the old one(s) will still be in the registry.
;You can tell which monitor(s) are active because they will have a sub-key named "Control"
;*****************************************************************************************
;
$strComputer="."
dim $strarrRawEDID,$arBaseKey,$arBaseKey2,$arBaseKey3,$arSubKeys,$arSubKeys2,$arSubKeys3,$sKey,$sKey2,$sKey3,$strSerFind,$arrintEDID,$sValue
$intMonitorCount=0
Const $HKLM = 0x80000002;HKEY_LOCAL_MACHINE
;get a handle to the WMI registry object
$oRegistry = ObjGet("winmgmts:{impersonationLevel=impersonate}!\\" & $strComputer & "/root/default:StdRegProv")
$sBaseKey = "SYSTEM\CurrentControlSet\Enum\DISPLAY\"
;enumerate all the keys HKLM\SYSTEM\CurrentControlSet\Enum\DISPLAY\
$iRC = $oRegistry.EnumKey($HKLM, $sBaseKey, $arSubKeys)
For $sKey In $arSubKeys
;we are now in the registry at the level of:
;HKLM\SYSTEM\CurrentControlSet\Enum\DISPLAY\<VESA_Monitor_ID\
;we need to dive in one more level and check the data of the "HardwareID" value
    $sBaseKey2 = $sBaseKey & $sKey & "\"
    $iRC2 = $oRegistry.EnumKey($HKLM, $sBaseKey2, $arSubKeys2)
    For $sKey2 In $arSubKeys2
    ;now we are at the level of:
    ;HKLM\SYSTEM\CurrentControlSet\Enum\DISPLAY\<VESA_Monitor_ID\<PNP_ID>\
    ;so we can check the "HardwareID" value

            $oRegistry.GetMultiStringValue($HKLM, $sBaseKey2 & $sKey2 & "\", "HardwareID", $sValue); (*** TRYSTIANSKY: Not sure how AUTOIT can pass the variable from GetMultiStringValue METHOD to $sValue ***)

            for $tmpctr=0 to ubound($sValue)
                if StringLower(StringLeft($svalue[$tmpctr],8))="monitor\" then
                ;if it is a monitor we will check for the existance of a control subkey
                ;that way we know it is an active monitor
                    $sBaseKey3 = $sBaseKey2 & $sKey2 & "\"
                    $iRC3 = $oRegistry.EnumKey($HKLM, $sBaseKey3, $arSubKeys3)
                    For $sKey3 In $arSubKeys3
                        if $skey3="Control" then
                        ;if the Control sub-key exists then we should read the edid info
                            $oRegistry.GetBinaryValue($HKLM, $sbasekey3 & "Device Parameters\", "EDID", $arrintEDID)
                            if IsArray($arrintedid) = 0 then;and if we don't find it... (*** TRYSTIANSKY: converted from VB: vartype(arrintedid) <> 8204. Not sure how AUTOIT can find an 'Array of Variants (vartype: 8204)' ***)
                                $strRawEDID="EDID Not Available";store an "unavailable message
                            else
                                for $bytevalue in $arrintedid;otherwise conver the byte array from the registry into a string (for easier processing later)
                                    $strRawEDID=$strRawEDID & chr($bytevalue)
                                next
                            endif
                        ;now take the string and store it in an array, that way we can support multiple monitors
                            redim $strarrRawEDID[$intMonitorCount]
                            $strarrRawEDID($intMonitorCount)=$strRawEDID
                            $intMonitorCount=$intMonitorCount+1
                        endif
                    next
                endif
        next
        
    Next
Next
;*****************************************************************************************
;now the EDID info for each active monitor is stored in an array of strings called strarrRawEDID
;so we can process it to get the good stuff out of it which we will store in a 5 dimensional array
;called arrMonitorInfo, the dimensions are as follows:
;0=VESA Mfg ID, 1=VESA Device ID, 2=MFG Date (M/YYYY),3=Serial Num (If available),4=Model Descriptor
;5=EDID Version
;*****************************************************************************************
dim $arrMonitorInfo
redim $arrMonitorInfo[$intMonitorCount-1][5]
dim $location[3]
for $tmpctr=0 to $intMonitorCount-1
    if $strarrRawEDID[$tmpctr] <> "EDID Not Available" then
    ;*********************************************************************
    ;first get the model and serial numbers from the vesa descriptor
    ;blocks in the edid. the model number is required to be present
    ;according to the spec. (v1.2 and beyond)but serial number is not
    ;required. There are 4 descriptor blocks in edid at offset locations
    ;0x36 0x48 0x5a and 0x6c each block is 18 bytes long
    ;*********************************************************************
        $location[0]=StringMid($strarrRawEDID[$tmpctr],0x36+1,18)
        $location[1]=StringMid($strarrRawEDID[$tmpctr],0x48+1,18)
        $location[2]=StringMid($strarrRawEDID[$tmpctr],0x5a+1,18)
        $location[3]=StringMid($strarrRawEDID[$tmpctr],0x6c+1,18)
            
    ;you can tell if the location contains a serial number if it starts with 0x00 00 00 ff
        $strSerFind=chr(0x00) & chr(0x00) & chr(0x00) & chr(0xff)
    ;or a model description if it starts with 0x00 00 00 fc
        $strMdlFind=chr(0x00) & chr(0x00) & chr(0x00) & chr(0xfc)
            
        $intSerFoundAt=-1
        $intMdlFoundAt=-1
        for $findit = 0 to 3
            if StringInStr($location[$findit],$strSerFind)>0 then
                $intSerFoundAt=$findit
            endif
            if StringinStr($location[$findit],$strMdlFind)>0 then
                $intMdlFoundAt=$findit
            endif
        next
        
    ;if a location containing a serial number block was found then store it
        if $intSerFoundAt<>-1 then
            $tmp=StringRight($location[$intSerFoundAt],14)
        endif
        if StringInStr($tmp,chr(0x0a))>0 then
            $tmpser=StringStripWS(StringLeft($tmp,StringinStr($tmp,chr(0x0a))-1),3)
        else
            $tmpser=StringStripWS($tmp,3)
        endif
    ;although it is not part of the edid spec it seems as though the
    ;serial number will frequently be preceeded by 0x00, this
    ;compensates for that
        if StringLeft($tmpser,1)=chr(0) then
            $tmpser=StringRight($tmpser,StringLen($tmpser)-1)
        else
            $tmpser="Serial Number Not Found in EDID data"
        endif
        
    ;if a location containing a model number block was found then store it
        if $intMdlFoundAt<>-1 then
            $tmp=StringRight($location[$intMdlFoundAt],14)
        endif
        if StringInStr($tmp,chr(0x0a))>0 then
            $tmpmdl=StringStripWS(StringLeft($tmp,StringInStr($tmp,chr(0x0a))-1),3)
        else
            $tmpmdl=StringStripWS($tmp,3)
        endif
    ;although it is not part of the edid spec it seems as though the
    ;serial number will frequently be preceeded by 0x00, this
    ;compensates for that
        if StringLeft($tmpmdl,1)=chr(0) then
            $tmpmdl=StringRight($tmpmdl,StringLen($tmpmdl)-1)
        else
            $tmpmdl="Model Descriptor Not Found in EDID data"
        endif
        
    ;**************************************************************
    ;next get the mfg date
    ;**************************************************************
    ;the week of manufacture is stored at EDID offset 0x10
        $tmpmfgweek=asc(StringMid($strarrRawEDID[$tmpctr],0x10+1,1))
        
    ;the year of manufacture is stored at EDID offset 0x11
    ;and is the current year -1990
        $tmpmfgyear=(asc(StringMid($strarrRawEDID[$tmpctr],0x11+1,1)))+1990
        
    ;store it in month/year format
        $tmpmdt="Week " & $tmpmfgweek & " / " & $tmpmfgyear
        
    ;**************************************************************
    ;next get the edid version
    ;**************************************************************
    ;the version is at EDID offset 0x12
        $tmpEDIDMajorVer=asc(StringMid($strarrRawEDID[$tmpctr],0x12+1,1))
        
    ;the revision level is at EDID offset 0x13
        $tmpEDIDRev=asc(StringMid($strarrRawEDID[$tmpctr],0x13+1,1))
        
    ;store it in month/year format
        $tmpver=chr(48+$tmpEDIDMajorVer) & "." & chr(48+$tmpEDIDRev)
        
    ;**************************************************************
    ;next get the mfg id
    ;**************************************************************
    ;the mfg id is 2 bytes starting at EDID offset 0x08
    ;the id is three characters long. using 5 bits to represent
    ;each character. the bits are used so that 1=A 2=B etc..
    ;
    ;get the data
        $tmpEDIDMfg=StringMid($strarrRawEDID[$tmpctr],0x08+1,2)
        $Char1=0
        $Char2=0
        $Char3=0
        $Byte1=asc(Stringleft($tmpEDIDMfg,1));get the first half of the string
        $Byte2=asc(Stringright($tmpEDIDMfg,1));get the first half of the string
    ;now shift the bits
    ;shift the 64 bit to the 16 bit
        if BitAND($Byte1, 64) > 0 then
            $Char1=$Char1+16
        endif
    ;shift the 32 bit to the 8 bit
        if BitAnd($Byte1, 32) > 0 then
            $Char1=$Char1+8
        endif
    ;etc....
        if BitAnd($Byte1, 16) > 0 then
            $Char1=$Char1+4
        endif
        if BitAnd($Byte1, 8) > 0 then
            $Char1=$Char1+2
        endif
        if BitAnd($Byte1, 4) > 0 then
            $Char1=$Char1+1
        endif
        
    ;the 2nd character uses the 2 bit and the 1 bit of the 1st byte
        if BitAnd($Byte1, 2) > 0 then
            $Char2=$Char2+16
        endif
        if BitAnd($Byte1, 1) > 0 then
            $Char2=$Char2+8
        endif
    ;and the 128,64 and 32 bits of the 2nd byte
        if BitAnd($Byte2, 128) > 0 then
            $Char2=$Char2+4
        endif
        if BitAnd($Byte2, 64) > 0 then
            $Char2=$Char2+2
        endif
        if BitAnd($Byte2, 32) > 0 then
            $Char2=$Char2+1
        endif
        
    ;the bits for the 3rd character don't need shifting
    ;we can use them as they are
        $Char3=$Char3+BitAnd($Byte2, 16)
        $Char3=$Char3+BitAnd($Byte2, 8)
        $Char3=$Char3+BitAnd($Byte2, 4)
        $Char3=$Char3+BitAnd($Byte2, 2)
        $Char3=$Char3+BitAnd($Byte2, 1)
        $tmpmfg=chr($Char1+64) & chr($Char2+64) & chr($Char3+64)
        
    ;**************************************************************
    ;next get the device id
    ;**************************************************************
    ;the device id is 2bytes starting at EDID offset 0x0a
    ;the bytes are in reverse order.
    ;this code is not text. it is just a 2 byte code assigned
    ;by the manufacturer. they should be unique to a model
        $tmpEDIDDev1=hex(asc(Stringmid($strarrRawEDID[$tmpctr],0x0a+1,1)))
        $tmpEDIDDev2=hex(asc(Stringmid($strarrRawEDID[$tmpctr],0x0b+1,1)))
        if Stringlen($tmpEDIDDev1)=1 then
            $tmpEDIDDev1="0" & $tmpEDIDDev1
        endif
        if Stringlen($tmpEDIDDev2)=1 then
            $tmpEDIDDev2="0" & $tmpEDIDDev2
        endif
        $tmpdev=$tmpEDIDDev2 & $tmpEDIDDev1
        
    ;**************************************************************
    ;finally store all the values into the array
    ;**************************************************************
        $arrMonitorInfo($tmpctr,0)=$tmpmfg
        $arrMonitorInfo($tmpctr,1)=$tmpdev
        $arrMonitorInfo($tmpctr,2)=$tmpmdt
        $arrMonitorInfo($tmpctr,3)=$tmpser
        $arrMonitorInfo($tmpctr,4)=$tmpmdl
        $arrMonitorInfo($tmpctr,5)=$tmpver
    endif
next
;For now just a simple screen print will suffice for output.
;But you could take this output and write it to a database or a file
;and in that way use it for asset management.
for $tmpctr=0 to $intMonitorCount-1
    ConsoleWrite("Monitor " & chr($tmpctr+65) & ")" & @CRLF)
    ConsoleWrite(".........." & "VESA Manufacturer ID= " & $arrMonitorInfo($tmpctr,0) & @CRLF)
    ConsoleWrite(".........." & "Device ID= " & $arrMonitorInfo($tmpctr,1) & @CRLF)
    ConsoleWrite(".........." & "Manufacture Date= " & $arrMonitorInfo($tmpctr,2) & @CRLF)
    ConsoleWrite(".........." & "Serial Number= " & $arrMonitorInfo($tmpctr,3) & @CRLF)
    ConsoleWrite(".........." & "Model Name= " & $arrMonitorInfo($tmpctr,4) & @CRLF)
    ConsoleWrite(".........." & "EDID Version= " & $arrMonitorInfo($tmpctr,5) & @CRLF)
next

spiderblues · November 12, 2005

Wow!!!! First of all: THANK YOU

I have an error in Line 79. Is this because of your issues????

Posted Image

Trystian · November 12, 2005

Yes, this was one of the issues I mentioned. I don't know how AUTOIT can pass the variable from GetMultiStringValue METHOD to $sValue (in this script). I'm still relatively new to AutoIT scripting. Perhaps someone else can help that has more familiarity integrating WMI calls through Objects in AutoIT3. Sorry I wasn't of more help.

-Trystian

Trystian · November 12, 2005

A solution would probably use the format of:

$sValue = $oRegistry.ExecQuery ("SELECT * FROM......

But then again, maybe not.

gafrost may have some insight into the WMI.

jefhal · November 12, 2005

I cleaned up a lot of syntax errors and array counting issues. (P.S. You'll need a file compare to see all the changes as they are spread out.) Not the neatest, but it gets all the way through the code and returns some values. Not sure if the values are what you expect.

Usually to get a value from WMI I set a variable equal to the property that I need. My samples are at work, but you'd do something like:

$var = $obj.color

Hope all this helps:

;''''''''''''''''''''''''''
; Monitor EDID Information'
;''''''''''''''''''''''''''
;*****************************************************************************************
;17 June 2004
;coded by Michael Baird
;
;11 November 2005
;ported to AutoIT 3.1.1.87 by Trystian Sky
;
;and released under the terms of GNU open source license agreement
;(that is of course if you CAN release code that uses WMI under GNU)
;
;Please give me credit if you use my code

;this code is based on the EEDID spec found at http://www.vesa.org
;and by my hacking around in the windows registry
;the code was tested on WINXP,WIN2K and WIN2K3
;it should work on WINME and WIN98SE
;It should work with multiple monitors, but that hasn't been tested either.
;*****************************************************************************************
;
;*****************************************************************************************
;It should be noted that this is not 100% reliable
;I have witnessed occasions where for one reason or another windows
;can't or doesn't read the EDID info at boot (example would be someone
;booting with the monitor turned off) and so windows changes the active
;monitor to "Default_Monitor"
;Another reason for reliability problems is that there is no
;requirement in the EDID spec that a manufacture include the
;serial number in the EDID data AND only EDIDv1.2 and beyond
;have a requirement that the EDID contain a descriptive
;model name
;That being said, here goes....
;*****************************************************************************************
;
;*****************************************************************************************
;Monitors are stored in HKLM\SYSTEM\CurrentControlSet\Enum\DISPLAY\
;
;Unfortunately, not only monitors are stored here Video Chipsets and maybe some other stuff
;is also here.
;
;Monitors in "HKLM\SYSTEM\CurrentControlSet\Enum\DISPLAY\" are organized like this:
; HKLM\SYSTEM\CurrentControlSet\Enum\DISPLAY\<VESA_Monitor_ID>\<PNP_ID>\
;Since not only monitors will be found under DISPLAY sub key you need to find out which
;devices are monitors.
;This can be deterimined by looking at the value "HardwareID" located
;at HKLM\SYSTEM\CurrentControlSet\Enum\DISPLAY\<VESA_Monitor_ID\<PNP_ID>\
;if the device is a monitor then the "HardwareID" value will contain the data "Monitor\<VESA_Monitor_ID>"
;
;The next difficulty is that all monitors are stored here not just the one curently plugged in.
;So, if you ever switched monitors the old one(s) will still be in the registry.
;You can tell which monitor(s) are active because they will have a sub-key named "Control"
;*****************************************************************************************
;
#include <array.au3>
dim $strRawEDID
$strComputer="."
dim $arBaseKey,$arBaseKey2,$arBaseKey3,$arSubKeys,$arSubKeys2,$arSubKeys3,$sKey,$sKey2,$sKey3,$strSerFind,$arrintEDID
dim $sValue[7]
global $intMonitorCount=0
dim $strarrRawEDID[15]
Const $HKLM = 0x80000002;HKEY_LOCAL_MACHINE
;get a handle to the WMI registry object
$oRegistry = ObjGet("winmgmts:{impersonationLevel=impersonate}!\\" & $strComputer & "/root/default:StdRegProv")
$sBaseKey = "SYSTEM\CurrentControlSet\Enum\DISPLAY\"
;enumerate all the keys HKLM\SYSTEM\CurrentControlSet\Enum\DISPLAY\
$iRC = $oRegistry.EnumKey($HKLM, $sBaseKey, $arSubKeys)
For $sKey In $arSubKeys
;we are now in the registry at the level of:
;HKLM\SYSTEM\CurrentControlSet\Enum\DISPLAY\<VESA_Monitor_ID\
;we need to dive in one more level and check the data of the "HardwareID" value
    $sBaseKey2 = $sBaseKey & $sKey & "\"
    $iRC2 = $oRegistry.EnumKey($HKLM, $sBaseKey2, $arSubKeys2)
    For $sKey2 In $arSubKeys2
    ;now we are at the level of:
    ;HKLM\SYSTEM\CurrentControlSet\Enum\DISPLAY\<VESA_Monitor_ID\<PNP_ID>\
    ;so we can check the "HardwareID" value

            $arr = $oRegistry.GetMultiStringValue($HKLM, $sBaseKey2 & $sKey2 & "\", "HardwareID", $sValue); (*** TRYSTIANSKY: Not sure how AUTOIT can pass the variable from GetMultiStringValue METHOD to $sValue ***)
_ArrayDisplay($arr,"$arr")
            for $tmpctr=0 to ubound($sValue) -1
                if StringLower(StringLeft($svalue[$tmpctr],8))="monitor\" then
                ;if it is a monitor we will check for the existance of a control subkey
                ;that way we know it is an active monitor
                    $sBaseKey3 = $sBaseKey2 & $sKey2 & "\"
                    $iRC3 = $oRegistry.EnumKey($HKLM, $sBaseKey3, $arSubKeys3)
                    For $sKey3 In $arSubKeys3
                        if $skey3="Control" then
                        ;if the Control sub-key exists then we should read the edid info
                            $oRegistry.GetBinaryValue($HKLM, $sbasekey3 & "Device Parameters\", "EDID", $arrintEDID)
                            if IsArray($arrintedid) = 0 then;and if we don't find it... (*** TRYSTIANSKY: converted from VB: vartype(arrintedid) <> 8204. Not sure how AUTOIT can find an 'Array of Variants (vartype: 8204)' ***)
                                $strRawEDID="EDID Not Available";store an "unavailable message
                            else
                                for $bytevalue in $arrintedid;otherwise conver the byte array from the registry into a string (for easier processing later)
                                    $strRawEDID=$strRawEDID & chr($bytevalue)
                                next
                            endif
                        ;now take the string and store it in an array, that way we can support multiple monitors
                        ;redim $strarrRawEDID[$intMonitorCount]
                            _arrayadd($strarrRawEDID,$strRawEDID)
                            $intMonitorCount=$intMonitorCount+1
                        endif
                    next
                endif
        next
        
    Next
Next
;*****************************************************************************************
;now the EDID info for each active monitor is stored in an array of strings called strarrRawEDID
;so we can process it to get the good stuff out of it which we will store in a 5 dimensional array
;called arrMonitorInfo, the dimensions are as follows:
;0=VESA Mfg ID, 1=VESA Device ID, 2=MFG Date (M/YYYY),3=Serial Num (If available),4=Model Descriptor
;5=EDID Version
;*****************************************************************************************
dim $arrMonitorInfo[6][6]
MsgBox(1,"",$intMonitorCount)
redim $arrMonitorInfo[$intMonitorCount][6]
dim $location[4]
for $tmpctr=0 to $intMonitorCount-1
    if $strarrRawEDID[$tmpctr] <> "EDID Not Available" then
    ;*********************************************************************
    ;first get the model and serial numbers from the vesa descriptor
    ;blocks in the edid. the model number is required to be present
    ;according to the spec. (v1.2 and beyond)but serial number is not
    ;required. There are 4 descriptor blocks in edid at offset locations
    ;0x36 0x48 0x5a and 0x6c each block is 18 bytes long
    ;*********************************************************************
        $location[0]=StringMid($strarrRawEDID[$tmpctr],0x36+1,18)
        $location[1]=StringMid($strarrRawEDID[$tmpctr],0x48+1,18)
        $location[2]=StringMid($strarrRawEDID[$tmpctr],0x5a+1,18)
        $location[3]=StringMid($strarrRawEDID[$tmpctr],0x6c+1,18)
            
    ;you can tell if the location contains a serial number if it starts with 0x00 00 00 ff
        $strSerFind=chr(0x00) & chr(0x00) & chr(0x00) & chr(0xff)
    ;or a model description if it starts with 0x00 00 00 fc
        $strMdlFind=chr(0x00) & chr(0x00) & chr(0x00) & chr(0xfc)
            
        $intSerFoundAt=-1
        $intMdlFoundAt=-1
        for $findit = 0 to 3
            if StringInStr($location[$findit],$strSerFind)>0 then
                $intSerFoundAt=$findit
            endif
            if StringinStr($location[$findit],$strMdlFind)>0 then
                $intMdlFoundAt=$findit
            endif
        next
        dim $tmp
    ;if a location containing a serial number block was found then store it
        if $intSerFoundAt<>-1 then
            $tmp=StringRight($location[$intSerFoundAt],14)
        endif
        if StringInStr($tmp,chr(0x0a))>0 then
            $tmpser=StringStripWS(StringLeft($tmp,StringinStr($tmp,chr(0x0a))-1),3)
        else
            $tmpser=StringStripWS($tmp,3)
        endif
    ;although it is not part of the edid spec it seems as though the
    ;serial number will frequently be preceeded by 0x00, this
    ;compensates for that
        if StringLeft($tmpser,1)=chr(0) then
            $tmpser=StringRight($tmpser,StringLen($tmpser)-1)
        else
            $tmpser="Serial Number Not Found in EDID data"
        endif
        
    ;if a location containing a model number block was found then store it
        if $intMdlFoundAt<>-1 then
            $tmp=StringRight($location[$intMdlFoundAt],14)
        endif
        if StringInStr($tmp,chr(0x0a))>0 then
            $tmpmdl=StringStripWS(StringLeft($tmp,StringInStr($tmp,chr(0x0a))-1),3)
        else
            $tmpmdl=StringStripWS($tmp,3)
        endif
    ;although it is not part of the edid spec it seems as though the
    ;serial number will frequently be preceeded by 0x00, this
    ;compensates for that
        if StringLeft($tmpmdl,1)=chr(0) then
            $tmpmdl=StringRight($tmpmdl,StringLen($tmpmdl)-1)
        else
            $tmpmdl="Model Descriptor Not Found in EDID data"
        endif
        
    ;**************************************************************
    ;next get the mfg date
    ;**************************************************************
    ;the week of manufacture is stored at EDID offset 0x10
        $tmpmfgweek=asc(StringMid($strarrRawEDID[$tmpctr],0x10+1,1))
        
    ;the year of manufacture is stored at EDID offset 0x11
    ;and is the current year -1990
        $tmpmfgyear=(asc(StringMid($strarrRawEDID[$tmpctr],0x11+1,1)))+1990
        
    ;store it in month/year format
        $tmpmdt="Week " & $tmpmfgweek & " / " & $tmpmfgyear
        
    ;**************************************************************
    ;next get the edid version
    ;**************************************************************
    ;the version is at EDID offset 0x12
        $tmpEDIDMajorVer=asc(StringMid($strarrRawEDID[$tmpctr],0x12+1,1))
        
    ;the revision level is at EDID offset 0x13
        $tmpEDIDRev=asc(StringMid($strarrRawEDID[$tmpctr],0x13+1,1))
        
    ;store it in month/year format
        $tmpver=chr(48+$tmpEDIDMajorVer) & "." & chr(48+$tmpEDIDRev)
        
    ;**************************************************************
    ;next get the mfg id
    ;**************************************************************
    ;the mfg id is 2 bytes starting at EDID offset 0x08
    ;the id is three characters long. using 5 bits to represent
    ;each character. the bits are used so that 1=A 2=B etc..
    ;
    ;get the data
        $tmpEDIDMfg=StringMid($strarrRawEDID[$tmpctr],0x08+1,2)
        $Char1=0
        $Char2=0
        $Char3=0
        $Byte1=asc(Stringleft($tmpEDIDMfg,1));get the first half of the string
        $Byte2=asc(Stringright($tmpEDIDMfg,1));get the first half of the string
    ;now shift the bits
    ;shift the 64 bit to the 16 bit
        if BitAND($Byte1, 64) > 0 then
            $Char1=$Char1+16
        endif
    ;shift the 32 bit to the 8 bit
        if BitAnd($Byte1, 32) > 0 then
            $Char1=$Char1+8
        endif
    ;etc....
        if BitAnd($Byte1, 16) > 0 then
            $Char1=$Char1+4
        endif
        if BitAnd($Byte1, 8) > 0 then
            $Char1=$Char1+2
        endif
        if BitAnd($Byte1, 4) > 0 then
            $Char1=$Char1+1
        endif
        
    ;the 2nd character uses the 2 bit and the 1 bit of the 1st byte
        if BitAnd($Byte1, 2) > 0 then
            $Char2=$Char2+16
        endif
        if BitAnd($Byte1, 1) > 0 then
            $Char2=$Char2+8
        endif
    ;and the 128,64 and 32 bits of the 2nd byte
        if BitAnd($Byte2, 128) > 0 then
            $Char2=$Char2+4
        endif
        if BitAnd($Byte2, 64) > 0 then
            $Char2=$Char2+2
        endif
        if BitAnd($Byte2, 32) > 0 then
            $Char2=$Char2+1
        endif
        
    ;the bits for the 3rd character don't need shifting
    ;we can use them as they are
        $Char3=$Char3+BitAnd($Byte2, 16)
        $Char3=$Char3+BitAnd($Byte2, 8)
        $Char3=$Char3+BitAnd($Byte2, 4)
        $Char3=$Char3+BitAnd($Byte2, 2)
        $Char3=$Char3+BitAnd($Byte2, 1)
        $tmpmfg=chr($Char1+64) & chr($Char2+64) & chr($Char3+64)
        
    ;**************************************************************
    ;next get the device id
    ;**************************************************************
    ;the device id is 2bytes starting at EDID offset 0x0a
    ;the bytes are in reverse order.
    ;this code is not text. it is just a 2 byte code assigned
    ;by the manufacturer. they should be unique to a model
        $tmpEDIDDev1=hex(asc(Stringmid($strarrRawEDID[$tmpctr],0x0a+1,1)))
        $tmpEDIDDev2=hex(asc(Stringmid($strarrRawEDID[$tmpctr],0x0b+1,1)))
        if Stringlen($tmpEDIDDev1)=1 then
            $tmpEDIDDev1="0" & $tmpEDIDDev1
        endif
        if Stringlen($tmpEDIDDev2)=1 then
            $tmpEDIDDev2="0" & $tmpEDIDDev2
        endif
        $tmpdev=$tmpEDIDDev2 & $tmpEDIDDev1
        
    ;**************************************************************
    ;finally store all the values into the array
    ;**************************************************************
        $arrMonitorInfo[$tmpctr][0]=$tmpmfg
        $arrMonitorInfo[$tmpctr][1]=$tmpdev
        $arrMonitorInfo[$tmpctr][2]=$tmpmdt
        $arrMonitorInfo[$tmpctr][3]=$tmpser
        $arrMonitorInfo[$tmpctr][4]=$tmpmdl
        $arrMonitorInfo[$tmpctr][5]=$tmpver
    endif
next
;For now just a simple screen print will suffice for output.
;But you could take this output and write it to a database or a file
;and in that way use it for asset management.
for $tmpctr=0 to $intMonitorCount-1
    ConsoleWrite("Monitor " & chr($tmpctr+65) & ")" & @CRLF)
    ConsoleWrite(".........." & "VESA Manufacturer ID= " & $arrMonitorInfo[$tmpctr][0] & @CRLF)
    ConsoleWrite(".........." & "Device ID= " & $arrMonitorInfo[$tmpctr][1] & @CRLF)
    ConsoleWrite(".........." & "Manufacture Date= " & $arrMonitorInfo[$tmpctr][2] & @CRLF)
    ConsoleWrite(".........." & "Serial Number= " & $arrMonitorInfo[$tmpctr][3] & @CRLF)
    ConsoleWrite(".........." & "Model Name= " & $arrMonitorInfo[$tmpctr][4] & @CRLF)
    ConsoleWrite(".........." & "EDID Version= " & $arrMonitorInfo[$tmpctr][5] & @CRLF)
next

Edited November 12, 2005 by jefhal

jefhal · November 12, 2005

By the way, wouldn't this do the job? It's generated by AutoIT Scriptomatic by Sven:

; Generated by AutoIt Scriptomatic

$wbemFlagReturnImmediately = 0x10
$wbemFlagForwardOnly = 0x20
$colItems = ""
$strComputer = "localhost"

$Output=""
$Output = $Output & "Computer: " & $strComputer  & @CRLF
$Output = $Output & "==========================================" & @CRLF
$objWMIService = ObjGet("winmgmts:\\" & $strComputer & "\root\CIMV2")
$colItems = $objWMIService.ExecQuery("SELECT * FROM Win32_DesktopMonitor", "WQL", _
                                          $wbemFlagReturnImmediately + $wbemFlagForwardOnly)

If IsObj($colItems) then
   For $objItem In $colItems
      $Output = $Output & "Availability: " & $objItem.Availability & @CRLF
      $Output = $Output & "Bandwidth: " & $objItem.Bandwidth & @CRLF
      $Output = $Output & "Caption: " & $objItem.Caption & @CRLF
      $Output = $Output & "ConfigManagerErrorCode: " & $objItem.ConfigManagerErrorCode & @CRLF
      $Output = $Output & "ConfigManagerUserConfig: " & $objItem.ConfigManagerUserConfig & @CRLF
      $Output = $Output & "CreationClassName: " & $objItem.CreationClassName & @CRLF
      $Output = $Output & "Description: " & $objItem.Description & @CRLF
      $Output = $Output & "DeviceID: " & $objItem.DeviceID & @CRLF
      $Output = $Output & "DisplayType: " & $objItem.DisplayType & @CRLF
      $Output = $Output & "ErrorCleared: " & $objItem.ErrorCleared & @CRLF
      $Output = $Output & "ErrorDescription: " & $objItem.ErrorDescription & @CRLF
      $Output = $Output & "InstallDate: " & WMIDateStringToDate($objItem.InstallDate) & @CRLF
      $Output = $Output & "IsLocked: " & $objItem.IsLocked & @CRLF
      $Output = $Output & "LastErrorCode: " & $objItem.LastErrorCode & @CRLF
      $Output = $Output & "MonitorManufacturer: " & $objItem.MonitorManufacturer & @CRLF
      $Output = $Output & "MonitorType: " & $objItem.MonitorType & @CRLF
      $Output = $Output & "Name: " & $objItem.Name & @CRLF
      $Output = $Output & "PixelsPerXLogicalInch: " & $objItem.PixelsPerXLogicalInch & @CRLF
      $Output = $Output & "PixelsPerYLogicalInch: " & $objItem.PixelsPerYLogicalInch & @CRLF
      $Output = $Output & "PNPDeviceID: " & $objItem.PNPDeviceID & @CRLF
      $strPowerManagementCapabilities = $objItem.PowerManagementCapabilities(0)
      $Output = $Output & "PowerManagementCapabilities: " & $strPowerManagementCapabilities & @CRLF
      $Output = $Output & "PowerManagementSupported: " & $objItem.PowerManagementSupported & @CRLF
      $Output = $Output & "ScreenHeight: " & $objItem.ScreenHeight & @CRLF
      $Output = $Output & "ScreenWidth: " & $objItem.ScreenWidth & @CRLF
      $Output = $Output & "Status: " & $objItem.Status & @CRLF
      $Output = $Output & "StatusInfo: " & $objItem.StatusInfo & @CRLF
      $Output = $Output & "SystemCreationClassName: " & $objItem.SystemCreationClassName & @CRLF
      $Output = $Output & "SystemName: " & $objItem.SystemName & @CRLF
      if Msgbox(1,"WMI Output",$Output) = 2 then ExitLoop
      $Output=""
   Next
Else
   Msgbox(0,"WMI Output","No WMI Objects Found for class: " & "Win32_DesktopMonitor" )
Endif


Func WMIDateStringToDate($dtmDate)

    Return (StringMid($dtmDate, 5, 2) & "/" & _
    StringMid($dtmDate, 7, 2) & "/" & StringLeft($dtmDate, 4) _
    & " " & StringMid($dtmDate, 9, 2) & ":" & StringMid($dtmDate, 11, 2) & ":" & StringMid($dtmDate,13, 2))
EndFunc

spiderblues · November 12, 2005

Thanks jefhal for cleaning up the code.

It's running now without errors, but it dosn't show the same info as the vb script!

Just getting the wmi information is not enough! The values you get are coded or so.

There is no serial number at all...

Trystian · November 12, 2005

I cleaned up a lot of syntax errors and array counting issues. (P.S. You'll need a file compare to see all the changes as they are spread out.) Not the neatest, but it gets all the way through the code and returns some values. Not sure if the values are what you expect.

I forgot to mention, I'm still a n00b, so the idea of me converting things from VB to AUTOIT is like having the short bus kid fly a Boing 767.

At least I get an "F" for effort, right? lol

jefhal · November 12, 2005

At least I get an "F" for effort, right? lol

You get an A for effort. When you say the serial number does not show up, do you mean the serial number of the monitor or of the computer? Or something else?

Geert · November 12, 2005

Some time ago I used archrival's code:

Simple monitor serial number retriever

spiderblues · November 12, 2005

You get an A for effort. When you say the serial number does not show up, do you mean the serial number of the monitor or of the computer? Or something else?

I need the serial and type of the monitor...

spiderblues · November 12, 2005

Some time ago I used archrival's code:
Simple monitor serial number retriever

...this code shows an empty serial and type!

Everest or AIDA shows both values, so I'm sure, it's saved somewhere...

Get Monitor Information

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