||cw

Option Explicit
Option Base 0

Public Type PRINTER_INFO_2
        pServerName As Long 'String
        pPrinterName As Long 'String
        pShareName As Long 'String
        pPortName As Long 'String
        pDriverName As Long 'String
        pComment As Long 'String
        pLocation As Long 'String
        pDevMode As Long ' DEVMODE
        pSepFile As Long 'String
        pPrintProcessor As Long 'String
        pDatatype As Long 'String
        pParameters As Long 'String
        pSecurityDescriptor As Long 'SECURITY_DESCRIPTOR
        Attributes As Long
        Priority As Long
        DefaultPriority As Long
        StartTime As Long
        UntilTime As Long
        Status As Long
        cJobs As Long
        AveragePPM As Long
End Type

Public Type PRINTER_DEFAULTS
        pDatatype As Long 'String
        pDevMode As Long 'DEVMODE
        DesiredAccess As Long
End Type


Public Declare Function AddPrinter Lib "winspool.drv" Alias "AddPrinterA" (ByVal pName As String, ByVal Level As Long, pPrinter As PRINTER_INFO_2) As Long
Public Declare Function ClosePrinter Lib "winspool.drv" (ByVal hPrinter As Long) As Long
Public Declare Function OpenPrinter Lib "winspool.drv" Alias "OpenPrinterA" (ByVal pPrinterName As String, phPrinter As Long, pDefault As PRINTER_DEFAULTS) As Long
Public Declare Function DeletePrinter Lib "winspool.drv" (ByVal hPrinter As Long) As Long

Public Declare Function lstrcpy Lib "kernel32" Alias "lstrcpyA" (ByVal lpString1 As Long, ByVal lpString2 As String) As Long

Public Const STANDARD_RIGHTS_REQUIRED = &HF0000
Public Const PRINTER_ACCESS_ADMINISTER = &H4
Public Const PRINTER_ACCESS_USE = &H8
Public Const PRINTER_ALL_ACCESS = (STANDARD_RIGHTS_REQUIRED Or PRINTER_ACCESS_ADMINISTER Or PRINTER_ACCESS_USE)
'
' This code adds a printer to a Windows NT/2000 server/workstation
'
' Written by Tony Edgecombe
' Tony.Edgecombe@frogmorecs.co.uk
' www.vbprint.com
' 22 Jan 2001
'
'



'Sub main()
'
''*********************************************************************
'' Test call
''
'' The parameters to CreatePrinter are:
''
'' Server Name - Blank if local machine
'' Printer Name - Must be unique
'' Port Name - Port must be installed already
'' Driver Name - Driver must be installed already
'' Print Processor - Must be installed already
''
''*********************************************************************
'
'    MsgBox "Printer Creation: " & CreatePrinter("", "New Printer", "LPT1:", "HP LaserJet 1100 (MS)", "WinPrint")
'
''*********************************************************************
'' Test Call
'' Parameter is the name of the printer to delete
''
'' For printers on another server use the UNC path ie \\Server\Printer
''*********************************************************************
'
'    MsgBox "Printer Deletion: " & RemovePrinter("New Printer")
'
'End Sub

Public Function CreatePrinter(strServer As String, _
                    strPrinter As String, _
                    strPort As String, _
                    strDriver As String, _
                    strPrintProcessor As String) As Boolean
                    
    Dim hPrinter As Long
    Dim pi2 As PRINTER_INFO_2
    Dim bBuffer(1000) As Byte
    Dim i

'*********************************************************************
' Initialise our buffer
'*********************************************************************

    For i = 0 To UBound(bBuffer)
        bBuffer(i) = 0
    Next

'*********************************************************************
' Set the pointers to the string values in bBuffer
'*********************************************************************

    pi2.pPrinterName = AddString(strPrinter, bBuffer)
    pi2.pPortName = AddString(strPort, bBuffer)
    pi2.pDriverName = AddString(strDriver, bBuffer)
    pi2.pPrintProcessor = AddString(strPrintProcessor, bBuffer)
    
'*********************************************************************
' Default all other values to 0 (NULL)
'*********************************************************************

    pi2.Attributes = 0
    pi2.AveragePPM = 0
    pi2.cJobs = 0
    pi2.DefaultPriority = 0
    pi2.pComment = 0
    pi2.pDatatype = 0
    pi2.pDevMode = 0
    pi2.pLocation = 0
    pi2.pParameters = 0
    pi2.Priority = 0
    pi2.pSecurityDescriptor = 0
    pi2.pSepFile = 0
    pi2.pServerName = 0
    pi2.pShareName = 0
    pi2.StartTime = 0
    pi2.Status = 0
    pi2.UntilTime = 0
    
'*********************************************************************
' Add the printer
' If success then close the returned handle
'*********************************************************************

    hPrinter = AddPrinter(strServer, 2, pi2)
    If hPrinter <> 0 Then
        ClosePrinter (hPrinter)
        CreatePrinter = True
    Else
        CreatePrinter = False
    End If
End Function

Private Function AddString(strString As String, ByRef bBuffer() As Byte) As Long
    
'*********************************************************************
' AddString copies a string into a Byte array and returns a long
' pointer to that string
'*********************************************************************

    Dim lngEnd As Long
    
    lngEnd = UBound(bBuffer) + 1
    Do
        lngEnd = lngEnd - 1
    Loop While (bBuffer(lngEnd) = 0 And lngEnd > 0)
    lngEnd = lngEnd + 2
   
    lstrcpy VarPtr(bBuffer(0)) + lngEnd, strString
    
    AddString = VarPtr(bBuffer(0)) + lngEnd
End Function

Public Function RemovePrinter(strPrinter As String)
    Dim hPrinter As Long
    Dim pd As PRINTER_DEFAULTS

'*********************************************************************
' Create a PRINTER_DEFAULTS structure with the required access rights
'*********************************************************************

    pd.pDatatype = 0
    pd.pDevMode = 0
    pd.DesiredAccess = PRINTER_ALL_ACCESS
    
'*********************************************************************
' Open the printer
'*********************************************************************

    If OpenPrinter(strPrinter, hPrinter, pd) = 0 Then
        RemovePrinter = False
        Exit Function
    End If
    
'*********************************************************************
' Remove it
'*********************************************************************

    If DeletePrinter(hPrinter) = 0 Then
        RemovePrinter = False
        Exit Function
    End If
    
'*********************************************************************
' Release the handle
'*********************************************************************

    ClosePrinter (hPrinter)
    
    RemovePrinter = True
End Function