In my shutdown program -- which defrags the harddrive with Diskeeper Lite, scans for spyware with AdAware and then scans for viruses with AVG before powering down -- I want it to warn me if I left the printer on.

Searching for existing threads uncovered this post, which links to this article. But that article is poorly constructed; it doesn't offer functional code.

Can anyone help me piece it together? This is what I have so far:
Code:
Option Explicit

Public Enum Printer_Status
    PRINTER_STATUS_READY = &H0
    PRINTER_STATUS_PAUSED = &H1
    PRINTER_STATUS_ERROR = &H2
    PRINTER_STATUS_PENDING_DELETION = &H4
    PRINTER_STATUS_PAPER_JAM = &H8
    PRINTER_STATUS_PAPER_OUT = &H10
    PRINTER_STATUS_MANUAL_FEED = &H20
    PRINTER_STATUS_PAPER_PROBLEM = &H40
    PRINTER_STATUS_OFFLINE = &H80
    PRINTER_STATUS_IO_ACTIVE = &H100
    PRINTER_STATUS_BUSY = &H200
    PRINTER_STATUS_PRINTING = &H400
    PRINTER_STATUS_OUTPUT_BIN_FULL = &H800
    PRINTER_STATUS_NOT_AVAILABLE = &H1000
    PRINTER_STATUS_WAITING = &H2000
    PRINTER_STATUS_PROCESSING = &H4000
    PRINTER_STATUS_INITIALIZING = &H8000
    PRINTER_STATUS_WARMING_UP = &H10000
    PRINTER_STATUS_TONER_LOW = &H20000
    PRINTER_STATUS_NO_TONER = &H40000
    PRINTER_STATUS_PAGE_PUNT = &H80000
    PRINTER_STATUS_USER_INTERVENTION = &H100000
    PRINTER_STATUS_OUT_OF_MEMORY = &H200000
    PRINTER_STATUS_DOOR_OPEN = &H400000
    PRINTER_STATUS_SERVER_UNKNOWN = &H800000
    PRINTER_STATUS_POWER_SAVE = &H1000000
End Enum

Private Type PRINTER_INFO_2
    pServerName As String
    pPrinterName As String
    pShareName As String
    pPortName As String
    pDriverName As String
    pComment As String
    pLocation As String
    pDevMode As Long
    pSepFile As String
    pPrintProcessor As String
    pDatatype As String
    pParameters As String
    pSecurityDescriptor As Long
    Attributes As Long
    Priority As Long
    DefaultPriority As Long
    StartTime As Long
    UntilTime As Long
    Status As Long
    JobsCount As Long
    AveragePPM As Long
End Type

Private Const CCHDEVICENAME = 32
Private Const CCHFORMNAME = 32

Private Type DEVMODE
    dmDeviceName As String * CCHDEVICENAME
    dmSpecVersion As Integer
    dmDriverVersion As Integer
    dmSize As Integer
    dmDriverExtra As Integer
    dmFields As Long
    dmOrientation As Integer
    dmPaperSize As Integer
    dmPaperLength As Integer
    dmPaperWidth As Integer
    dmScale As Integer
    dmCopies As Integer
    dmDefaultSource As Integer
    dmPrintQuality As Integer
    dmColor As Integer
    dmDuplex As Integer
    dmYResolution As Integer
    dmTTOption As Integer
    dmCollate As Integer
    dmFormName As String * CCHFORMNAME
    dmUnusedPadding As Integer
    dmBitsPerPel As Long
    dmPelsWidth As Long
    dmPelsHeight As Long
    dmDisplayFlags As Long
    dmDisplayFrequency As Long
End Type

Private Type PRINTER_DEFAULTS
    pDatatype As String
    pDevMode As DEVMODE
    DesiredAccess As Long
End Type

Private Declare Function ClosePrinter Lib "winspool.drv" (ByVal hPrinter As Long) As Long
Private Declare Function GetPrinterApi Lib "winspool.drv" Alias "GetPrinterA" (ByVal hPrinter As Long, ByVal Level As Long, buffer As Long, ByVal pbSize As Long, pbSizeNeeded As Long) As Long
Private Declare Function OpenPrinter Lib "winspool.drv" Alias "OpenPrinterA" (ByVal pPrinterName As String, phPrinter As Long, pDefault As PRINTER_DEFAULTS) As Long


Private Sub Command1_Click()
    Dim lret As Long
    Dim pDef As PRINTER_DEFAULTS
    Dim mhPrinter As Long
    Dim Index As Long
    
    lret = OpenPrinter(Printer.DeviceName, mhPrinter, pDef)
    
    Dim SizeNeeded As Long
    
    Dim buffer() As Long
    
    ReDim Preserve buffer(0 To 1) As Long
    lret = GetPrinterApi(mhPrinter, Index, buffer(0), UBound(buffer), SizeNeeded)
    ReDim Preserve buffer(0 To (SizeNeeded / 4) + 3) As Long
    lret = GetPrinterApi(mhPrinter, Index, buffer(0), UBound(buffer) * 4, SizeNeeded)

Dim mPRINTER_INFO_2 As PRINTER_INFO_2
With mPRINTER_INFO_2 '\\ This variable is of type PRINTER_INFO_2
   .pServerName = StringFromPointer(buffer(0), 1024)
   .pPrinterName = StringFromPointer(buffer(1), 1024)
   .pShareName = StringFromPointer(buffer(2), 1024)
   .pPortName = StringFromPointer(buffer(3), 1024)
   .pDriverName = StringFromPointer(buffer(4), 1024)
   .pComment = StringFromPointer(buffer(5), 1024)
   .pLocation = StringFromPointer(buffer(6), 1024)
   .pDevMode = buffer(7)
   .pSepFile = StringFromPointer(buffer(8), 1024)
   .pPrintProcessor = StringFromPointer(buffer(9), 1024)
   .pDatatype = StringFromPointer(buffer(10), 1024)
   .pParameters = StringFromPointer(buffer(11), 1024)
   .pSecurityDescriptor = buffer(12)
   .Attributes = buffer(13)
   .Priority = buffer(14)
   .DefaultPriority = buffer(15)
   .StartTime = buffer(16)
   .UntilTime = buffer(17)
   .Status = buffer(18)
   .JobsCount = buffer(19)
   .AveragePPM = buffer(20)
End With
ClosePrinter mhPrinter
End Sub

Public Function StringFromPointer(lpString As Long, lMaxLength As Long) As String

  Dim sRet As String
  Dim lret As Long

  If lpString = 0 Then
    StringFromPointer = ""
    Exit Function
  End If

  If IsBadStringPtrByLong(lpString, lMaxLength) Then
    '\\ An error has occured - do not attempt to use this pointer
      StringFromPointer = ""
    Exit Function
  End If

  '\\ Pre-initialise the return string...
  sRet = Space$(lMaxLength)
  CopyMemory ByVal sRet, ByVal lpString, ByVal Len(sRet)
  If Err.LastDllError = 0 Then
    If InStr(sRet, Chr$(0)) > 0 Then
      sRet = Left$(sRet, InStr(sRet, Chr$(0)) - 1)
    End If
  End If

  StringFromPointer = sRet

End Function