Windows 的 Microsoft Word 並不提供自動化用戶端開始列印工作之前，先設定雙面列印旗標的方法。雖然指示支援雙面列印 PrintOut 方法中有一個參數，參數並不提供，則為 True 的雙面列印，並可能無法使用您的作業系統而定或安裝的語言。 不過，開發人員可以解決藉由呼叫 Word 的 PrintOut 函式之前先變更雙工旗標為作用中的印表機驅動程式在 Windows 系統上這種限制。
本文將告訴您，如何使用 Windows API 來變更作用中印表機的雙面列印設定，並允許工要列印的 Word 文件。
這個程式碼使用 DocumentProperties API 來變更列印設定的印表機驅動程式來啟用雙面列印。這個程式碼已順利運作一般使用者必須變更印表機的通用的列印設定的適當權限。如果使用者沒有變更驅動程式設定適當的權限，它們將會得到拒絕存取 」 錯誤上 OpenPrinter API 呼叫。
Microsoft Windows NT 與 Microsoft Windows 2000 給需要列印到共用的網路印表機上的使用者，這可能會發生問題，因為列印驅動程式不在本機電腦上，但在列印伺服器上。雖然可以讓系統管理員來設定列印伺服器，讓結束使用者以變更全域設定適當的權限，不希望在大部分的情況中這麼做。如果要解決這個問題，有可能安裝本機列印驅動程式的網路的印表機，並讓每位使用者控制他們的本機系統的設定。
Option Explicit
Public Type PRINTER_DEFAULTS
pDatatype As Long
pDevmode As Long
DesiredAccess As Long
End Type
Public Type PRINTER_INFO_2
pServerName As Long
pPrinterName As Long
pShareName As Long
pPortName As Long
pDriverName As Long
pComment As Long
pLocation As Long
pDevmode As Long ' Pointer to DEVMODE
pSepFile As Long
pPrintProcessor As Long
pDatatype As Long
pParameters As Long
pSecurityDescriptor As Long ' Pointer to 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 DEVMODE
dmDeviceName As String * 32
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 * 32
dmUnusedPadding As Integer
dmBitsPerPel As Integer
dmPelsWidth As Long
dmPelsHeight As Long
dmDisplayFlags As Long
dmDisplayFrequency As Long
dmICMMethod As Long
dmICMIntent As Long
dmMediaType As Long
dmDitherType As Long
dmReserved1 As Long
dmReserved2 As Long
End Type
Public Const DM_DUPLEX = &H1000&
Public Const DM_IN_BUFFER = 8
Public Const DM_OUT_BUFFER = 2
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)
Public Declare Function ClosePrinter Lib "winspool.drv" _
(ByVal hPrinter As Long) As Long
Public Declare Function DocumentProperties Lib "winspool.drv" _
Alias "DocumentPropertiesA" (ByVal hwnd As Long, _
ByVal hPrinter As Long, ByVal pDeviceName As String, _
ByVal pDevModeOutput As Long, ByVal pDevModeInput As Long, _
ByVal fMode As Long) As Long
Public Declare Function GetPrinter Lib "winspool.drv" Alias _
"GetPrinterA" (ByVal hPrinter As Long, ByVal Level As Long, _
pPrinter As Byte, ByVal cbBuf As Long, pcbNeeded 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 SetPrinter Lib "winspool.drv" Alias _
"SetPrinterA" (ByVal hPrinter As Long, ByVal Level As Long, _
pPrinter As Byte, ByVal Command As Long) As Long
Public Declare Sub CopyMemory Lib "kernel32" Alias "RtlMoveMemory" _
(pDest As Any, pSource As Any, ByVal cbLength As Long)
' ==================================================================
' SetPrinterDuplex
'
' Programmatically set the Duplex flag for the specified printer
' driver's default properties.
'
' Returns: True on success, False on error. (An error will also
' display a message box. This is done for informational value
' only. You should modify the code to support better error
' handling in your production application.)
'
' Parameters:
' sPrinterName - The name of the printer to be used.
'
' nDuplexSetting - One of the following standard settings:
' 1 = None
' 2 = Duplex on long edge (book)
' 3 = Duplex on short edge (legal)
'
' ==================================================================
Public Function SetPrinterDuplex(ByVal sPrinterName As String, _
ByVal nDuplexSetting As Long) As Boolean
Dim hPrinter As Long
Dim pd As PRINTER_DEFAULTS
Dim pinfo As PRINTER_INFO_2
Dim dm As DEVMODE
Dim yDevModeData() As Byte
Dim yPInfoMemory() As Byte
Dim nBytesNeeded As Long
Dim nRet As Long, nJunk As Long
On Error GoTo cleanup
If (nDuplexSetting < 1) Or (nDuplexSetting > 3) Then
MsgBox "Error: dwDuplexSetting is incorrect."
Exit Function
End If
pd.DesiredAccess = PRINTER_ALL_ACCESS
nRet = OpenPrinter(sPrinterName, hPrinter, pd)
If (nRet = 0) Or (hPrinter = 0) Then
If Err.LastDllError = 5 Then
MsgBox "Access denied -- See the article for more info."
Else
MsgBox "Cannot open the printer specified " & _
"(make sure the printer name is correct)."
End If
Exit Function
End If
nRet = DocumentProperties(0, hPrinter, sPrinterName, 0, 0, 0)
If (nRet < 0) Then
MsgBox "Cannot get the size of the DEVMODE structure."
GoTo cleanup
End If
ReDim yDevModeData(nRet + 100) As Byte
nRet = DocumentProperties(0, hPrinter, sPrinterName, _
VarPtr(yDevModeData(0)), 0, DM_OUT_BUFFER)
If (nRet < 0) Then
MsgBox "Cannot get the DEVMODE structure."
GoTo cleanup
End If
Call CopyMemory(dm, yDevModeData(0), Len(dm))
If Not CBool(dm.dmFields And DM_DUPLEX) Then
MsgBox "You cannot modify the duplex flag for this printer " & _
"because it does not support duplex or the driver " & _
"does not support setting it from the Windows API."
GoTo cleanup
End If
dm.dmDuplex = nDuplexSetting
Call CopyMemory(yDevModeData(0), dm, Len(dm))
nRet = DocumentProperties(0, hPrinter, sPrinterName, _
VarPtr(yDevModeData(0)), VarPtr(yDevModeData(0)), _
DM_IN_BUFFER Or DM_OUT_BUFFER)
If (nRet < 0) Then
MsgBox "Unable to set duplex setting to this printer."
GoTo cleanup
End If
Call GetPrinter(hPrinter, 2, 0, 0, nBytesNeeded)
If (nBytesNeeded = 0) Then GoTo cleanup
ReDim yPInfoMemory(nBytesNeeded + 100) As Byte
nRet = GetPrinter(hPrinter, 2, yPInfoMemory(0), nBytesNeeded, nJunk)
If (nRet = 0) Then
MsgBox "Unable to get shared printer settings."
GoTo cleanup
End If
Call CopyMemory(pinfo, yPInfoMemory(0), Len(pinfo))
pinfo.pDevmode = VarPtr(yDevModeData(0))
pinfo.pSecurityDescriptor = 0
Call CopyMemory(yPInfoMemory(0), pinfo, Len(pinfo))
nRet = SetPrinter(hPrinter, 2, yPInfoMemory(0), 0)
If (nRet = 0) Then
MsgBox "Unable to set shared printer settings."
End If
SetPrinterDuplex = CBool(nRet)
cleanup:
If (hPrinter <> 0) Then Call ClosePrinter(hPrinter)
End Function
在 Form1，新增標準的 [指令] 按鈕。
將下列程式碼加入至程式碼視窗 Form1：
Option Explicit
Private Sub Command1_Click()
Dim oWord As Object
Dim oDoc As Object
Set oWord = CreateObject("Word.application")
oWord.Visible = True
Set oDoc = oWord.Documents.Add
oDoc.Range.Select
oWord.Selection.TypeText "This is on page 1" & vbCr
oWord.Selection.InsertBreak 1
oWord.Selection.TypeText "This is page 2"
SetPrinterDuplex Printer.DeviceName, 2
oDoc.PrintOut Background:=False
SetPrinterDuplex Printer.DeviceName, 1
MsgBox "Print Done", vbMsgBoxSetForeground
oDoc.Saved = True
oDoc.Close
Set oDoc = Nothing
oWord.Quit
Set oWord = Nothing
End Sub
重要：本文是以 Microsoft 機器翻譯軟體翻譯而成，而非使用人工翻譯而成。Microsoft 同時提供使用者人工翻譯及機器翻譯兩個版本的文章，讓使用者可以依其使用語言使用知識庫中的所有文章。但是，機器翻譯的文章可能不盡完美。這些文章中也可能出現拼字、語意或文法上的錯誤，就像外國人在使用本國語言時可能發生的錯誤。Microsoft 不為內容的翻譯錯誤或客戶對該內容的使用所產生的任何錯誤或損害負責。Microsoft也同時將不斷地就機器翻譯軟體進行更新。
Windows Live
Facebook
Twitter
Linkedin
Digg it
Yahoo
Delicious
StumbleUpon
Yammer
Reddit
Technorati
FriendFeed
Email
機器翻譯
回此頁最上方
