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完美支持98、2000系统自定义打印纸张的VB代码

 2008-03-08 12:55:28 来源:WEB开发网   
核心提示:主要代码取自微软网站上的一篇文章,只做少许改动,完美支持98、2000系统自定义打印纸张的VB代码,98、2000系统下已测试通过(打印机LQ-300K)'模块modPRintOption EXPlicitPublic Declare Function EnumForms Lib "winspool.
主要代码取自微软网站上的一篇文章,只做少许改动。98、2000系统下已测试通过(打印机LQ-300K)
'模块modPRint
Option EXPlicitPublic Declare Function EnumForms Lib "winspool.drv" Alias "EnumFormsA" _
   (ByVal hPrinter As Long, ByVal Level As Long, ByRef pForm As Any, _
   ByVal cbBuf As Long, ByRef pcbNeeded As Long, _
   ByRef pcReturned As Long) As LongPublic Declare Function AddForm Lib "winspool.drv" Alias "AddFormA" _
   (ByVal hPrinter As Long, ByVal Level As Long, pForm As Byte) As LongPublic Declare Function DeleteForm Lib "winspool.drv" Alias "DeleteFormA" _
   (ByVal hPrinter As Long, ByVal pFormName As String) As LongPublic Declare Function OpenPrinter Lib "winspool.drv" _
   Alias "OpenPrinterA" (ByVal pPrinterName As String, _
   phprinter As Long, ByVal pDefault As Long) As LongPublic Declare Function ClosePrinter Lib "winspool.drv" _
   (ByVal hPrinter As Long) As LongPublic Declare Function DocumentProperties Lib "winspool.drv" _
   Alias "DocumentPropertiesA" (ByVal hwnd As Long, _
   ByVal hPrinter As Long, ByVal pDeviceName As String, _
   pDevModeOutput As Any, pDevModeInput As Any, ByVal fMode As Long) _
   As LongPublic Declare Function ResetDC Lib "gdi32" Alias "ResetDCA" _
   (ByVal hdc As Long, lpInitData As Any) As LongPublic Declare Sub CopyMemory Lib "kernel32" Alias "RtlMoveMemory" _
   (hpvDest As Any, hpvSource As Any, ByVal cbCopy As Long)Public Declare Function lstrcpy Lib "kernel32" Alias "lstrcpyA" _
   (ByVal lpString1 As String, ByRef lpString2 As Long) As Long' Optional functions not used in this sample, but may be useful.
Public Declare Function GetForm Lib "winspool.drv" Alias "GetFormA" _
   (ByVal hPrinter As Long, ByVal pFormName As String, _
   ByVal Level As Long, pForm As Byte, ByVal cbBuf As Long, _
   pcbNeeded As Long) As LongPublic Declare Function SetForm Lib "winspool.drv" Alias "SetFormA" _
   (ByVal hPrinter As Long, ByVal pFormName As String, _
   ByVal Level As Long, pForm As Byte) As Long' Constants for DEVMODE
Public Const CCHFORMNAME = 32
Public Const CCHDEVICENAME = 32
Public Const DM_FORMNAME As Long = &H10000
Public Const DM_ORIENTATION = &H1&
' Constants for PRINTER_DEFAULTS.Desiredaccess
Public Const PRINTER_ACCESS_ADMINISTER = &H4
Public Const PRINTER_ACCESS_USE = &H8
Public Const STANDARD_RIGHTS_REQUIRED = &HF0000
Public Const PRINTER_ALL_ACCESS = (STANDARD_RIGHTS_REQUIRED Or _
  PRINTER_ACCESS_ADMINISTER Or PRINTER_ACCESS_USE)' Constants for DocumentProperties() call
Public Const DM_MODIFY = 8
Public Const DM_IN_BUFFER = DM_MODIFY
Public Const DM_COPY = 2
Public Const DM_OUT_BUFFER = DM_COPY' Custom constants for this sample's SelectForm function
Public Const FORM_NOT_SELECTED = 0
Public Const FORM_SELECTED = 1
Public Const FORM_ADDED = 2Public Type RECTL
     Left As Long
     Top As Long
     Right As Long
     Bottom As Long
End TypePublic Type SIZEL
     cx As Long
     cy As Long
End TypePublic Type SECURITY_DESCRipTOR
     Revision As Byte
     Sbz1 As Byte
     Control As Long
     Owner As Long
     Group As Long
     Sacl As Long  ' ACL
     Dacl As Long  ' ACL
End Type' The two definitions for FORM_INFO_1 make the coding easier.
Public Type FORM_INFO_1
     Flags As Long
     pName As Long  ' String
     Size As SIZEL
     ImageableArea As RECTL
End TypePublic Type sFORM_INFO_1
     Flags As Long
     pName As String
     Size As SIZEL
     ImageableArea As RECTL
End TypePublic 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
Public Type PRINTER_DEFAULTS
     pDatatype As String
     pDevMode As Long   ' DEVMODE
     DesiredAccess As Long
End TypePublic 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 DEVMODE
     pSepFile As String
     pPrintProcessor As String
     pDatatype As String
     pParameters As String
     pSecurityDescriptor As 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
'判定系统是否为NT系统
Public Declare Function GetVersionEx Lib "kernel32" Alias "GetVersionExA" _
             (lpVersionInformation As OSVERSIONINFO) As LongPublic Type OSVERSIONINFO
   dwOSVersionInfoSize As Long
   dwMajorVersion As Long
   dwMinorVersion As Long
   dwBuildNumber As Long
   dwPlatformId As Long
   szCSDVersion As String * 128    '  Maintenance string for PSS usage
End Type
Public Function SelectForm(FormName As String, ByVal MyhWnd As Long) _
   As Integer
  Dim nSize As Long      ' Size of DEVMODE
  Dim pDevMode As DEVMODE
  Dim PrinterHandle As Long  ' Handle to printer
  Dim hPrtDC As Long      ' Handle to Printer DC
  Dim PrinterName As String
  Dim aDevMode() As Byte    ' Working DEVMODE
  Dim FormSize As SIZEL
  Dim tmpFormName As String
  Dim isNT As Boolean
  Dim PaperWidth As Long, PaperHeight As Long
 
 
  '在这里统一添加自定义纸张
  Select Case FormName
   Case "广东省发票"
    With FormSize  ' Desired page size
     .cx = 186000
     .cy = 102000
    End With
    PaperWidth = 10544 '15.6cm
    PaperHeight = 5784 '10.2cm
   Case "80列报表"
    With FormSize  ' Desired page size
     .cx = 210000
     .cy = 280000
    End With
    PaperWidth = 11904 '21cm
    PaperHeight = 15872 '28cm
   Case "40列报表"
    With FormSize  ' Desired page size
     .cx = 210000
     .cy = 140000
    End With
    PaperWidth = 11904 '21cm
    PaperHeight = 7936 '14cm
   Case "20列报表"
    With FormSize  ' Desired page size
     .cx = 210000
     .cy = 70000
    End With
    PaperWidth = 11904 '21cm
    PaperHeight = 4008 '7cm
  End Select
 
  '不是NT直接给Printer赋值得了
  If Not IsNtOs Then
   Printer.Width = PaperWidth
   Printer.Height = PaperHeight
   SelectForm = FORM_SELECTED
   Exit Function
  End If
 
 
  PrinterName = Printer.DeviceName  ' Current printer
  hPrtDC = Printer.hdc        ' hDC for current Printer
  SelectForm = FORM_NOT_SELECTED   ' Set for failure unless reset in code.
 
  ' Get a handle to the printer.
  If OpenPrinter(PrinterName, PrinterHandle, 0&) Then
    ' Retrieve the size of the DEVMODE.
    nSize = DocumentProperties(MyhWnd, PrinterHandle, PrinterName, 0&, _
        0&, 0&)
    ' Reserve memory for the actual size of the DEVMODE.
    ReDim aDevMode(1 To nSize)
 
    ' Fill the DEVMODE from the printer.
    nSize = DocumentProperties(MyhWnd, PrinterHandle, PrinterName, _
        aDevMode(1), 0&, DM_OUT_BUFFER)
    ' Copy the Public (predefined) portion of the DEVMODE.
    Call CopyMemory(pDevMode, aDevMode(1), Len(pDevMode))
 
    ' If FormName is "MyCustomForm", we must make sure it exists
    ' before using it. Otherwise, it came from our EnumForms list,
    ' and we do not need to check first. Note that we could have
    ' passed in a Flag instead of checking for a literal name.
 
    tmpFormName = FormName
   
    If GetFormName(PrinterHandle, FormSize, tmpFormName) = 0 Then
      ' Form not found - Either of the next 2 lines will work.
      'FormName = AddNewForm(PrinterHandle, FormSize, "MyCustomForm")
      AddNewForm PrinterHandle, FormSize, FormName
      If GetFormName(PrinterHandle, FormSize, FormName) = 0 Then
        ClosePrinter (PrinterHandle)
        SelectForm = FORM_NOT_SELECTED  ' Selection Failed!
        Exit Function
      Else
        SelectForm = FORM_ADDED  ' Form Added, Selection sUCceeded!
      End If
    End If
 
    ' Change the appropriate member in the DevMode.
    ' In this case, you want to change the form name.
    pDevMode.dmFormName = FormName & Chr(0)  ' Must be NULL terminated!
    ' Set the dmFields bit flag to indicate what you are changing.
    pDevMode.dmFields = DM_FORMNAME
 
    ' Copy your changes back, then update DEVMODE.
    Call CopyMemory(aDevMode(1), pDevMode, Len(pDevMode))
    nSize = DocumentProperties(MyhWnd, PrinterHandle, PrinterName, _
        aDevMode(1), aDevMode(1), DM_IN_BUFFER Or DM_OUT_BUFFER)
 
    nSize = ResetDC(hPrtDC, aDevMode(1))  ' Reset the DEVMODE for the DC.
 
    ' Close the handle when you are finished with it.
    ClosePrinter (PrinterHandle)
    ' Selection Succeeded! But was Form Added?
    If SelectForm <> FORM_ADDED Then SelectForm = FORM_SELECTED
  Else
    SelectForm = FORM_NOT_SELECTED  ' Selection Failed!
  End If
End Function
Public Function GetFormName(ByVal PrinterHandle As Long, _
              FormSize As SIZEL, FormName As String) As Integer
  Dim NumForms As Long, I As Long
  Dim FI1 As FORM_INFO_1
  Dim aFI1() As FORM_INFO_1      ' Working FI1 array
  Dim Temp() As Byte          ' Temp FI1 array
  Dim FormIndex As Integer
  Dim BytesNeeded As Long
  Dim RetVal As Long
 
  FormName = vbNullString
  FormIndex = 0
  ReDim aFI1(1)
  ' First call retrieves the BytesNeeded.
  RetVal = EnumForms(PrinterHandle, 1, aFI1(0), 0&, BytesNeeded, NumForms)
  ReDim Temp(BytesNeeded)
  ReDim aFI1(BytesNeeded / Len(FI1))
  ' Second call actually enumerates the supported forms.
  RetVal = EnumForms(PrinterHandle, 1, Temp(0), BytesNeeded, BytesNeeded, _
      NumForms)
  Call CopyMemory(aFI1(0), Temp(0), BytesNeeded)
  For I = 0 To NumForms - 1
    With aFI1(I)
      If .Size.cx = FormSize.cx And .Size.cy = FormSize.cy Then
       ' Found the desired form
        FormName = PtrCtoVbString(.pName)
        FormIndex = I + 1
        Exit For
      End If
    End With
  Next I
  GetFormName = FormIndex  ' Returns non-zero when form is found.
End FunctionPublic Function AddNewForm(PrinterHandle As Long, FormSize As SIZEL, _
              FormName As String) As String
  Dim FI1 As sFORM_INFO_1
  Dim aFI1() As Byte
  Dim RetVal As Long
 
  With FI1
    .Flags = 0
    .pName = FormName
    With .Size
      .cx = FormSize.cx
      .cy = FormSize.cy
    End With
    With .ImageableArea
      .Left = 0
      .Top = 0
      .Right = FI1.Size.cx
      .Bottom = FI1.Size.cy
    End With
  End With
  ReDim aFI1(Len(FI1))
  Call CopyMemory(aFI1(0), FI1, Len(FI1))
  RetVal = AddForm(PrinterHandle, 1, aFI1(0))
  If RetVal = 0 Then
    If Err.LastDllError = 5 Then
      MsgBox "You do not have permissions to add a form to " & _
       Printer.DeviceName, vbExclamation, "Access Denied!"
    Else
      MsgBox "Error: " & Err.LastDllError, , "Error Adding Form"
      'MsgBox "Error: " & Err.LastDllError, "Error Adding Form"
    End If
    AddNewForm = "none"
  Else
    AddNewForm = FI1.pName
  End If
End Function
Public Sub PrintTest()
  ' Print two test pages to confirm the page size.
  Printer.Print "Top of Page 1."
  Printer.NewPage
  ' Spacing between lines should reflect the chosen page height.
  Printer.Print "Top of Page 2. - Check the page Height (Length.)"
  Printer.EndDoc
  MsgBox "Check Printer " & Printer.DeviceName, vbInformation, "Done!"
End Sub
Public Function PtrCtoVbString(ByVal Add As Long) As String
  Dim sTemp As String * 512, X As Long
 
  X = lstrcpy(sTemp, ByVal Add)
  If (InStr(1, sTemp, Chr(0)) = 0) Then
    PtrCtoVbString = ""
  Else
    PtrCtoVbString = Left(sTemp, InStr(1, sTemp, Chr(0)) - 1)
  End If
End Function
Public Function IsNtOs() As Boolean
  Dim ver As OSVERSIONINFO
 
  ver.dwOSVersionInfoSize = 148
  GetVersionEx ver
  With ver
    Select Case .dwPlatformId
      Case 0, 1
       IsNtOs = False
      Case 2
       IsNtOs = True
    End Select
  End With
End Function
Public Function UseForm(FormName As String, sHwnd As Long) As Integer
  Dim RetVal As Integer
  Dim FormSize As SIZEL ' Size of desired form
   
  RetVal = SelectForm(FormName, sHwnd) '选择纸张类型
  UseForm = RetVal
  Select Case RetVal
    Case FORM_NOT_SELECTED  ' 0
      ' 选择纸张失败!
      'MsgBox "Unable to retrieve From name", vbExclamation, _
       '"Operation halted!"
    Case FORM_SELECTED  ' 1
      ' 选择成功!
      'PrintTest   ' Comment this line to avoid printing
    Case FORM_ADDED  ' 2
      ' 添加并选择成功.
      'PrintTest   ' Comment this line to avoid printing
  End Select
End Function
'调用,在Form1上放置Command1、Command2,复制下列代码:
Option ExplicitPrivate Sub Command1_Click()
  Dim FormName As String, RetValue As Integer  '自定义打印纸张
  FormName = "广东省发票"
  RetValue = UseForm(FormName, Me.hwnd)
  'If RetValue = 0 Then GoTo errPrint
  PrintTest
End SubPrivate Sub Command2_Click()
  Dim FormName As String, RetValue As Integer
 
  '自定义打印纸张
  FormName = "80列报表"
  RetValue = UseForm(FormName, Me.hwnd)
  'If RetValue = 0 Then GoTo errPrint
  PrintTest
End SubPrivate Sub Form_Load()
  Command1.Caption = "打印发票"
  Command2.Caption = "打印报表"
End Sub

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