Microsoft Windows 95、 Windows 98 和 Windows 千禧版 (Me) 是彈性上自訂的使用者定義的頁面大小的。但是，正在執行 Windows NT 和 Windows 2000 的系統上您必須定義所有的頁面大小為表單才能使用它們。本文將告訴您，如何在 Windows NT 和 Windows 2000 上列印自訂的頁面大小，並包含程式碼範例示範如何新增、 選取，及刪除自訂的表單。
dmPaperLength 和 dmPaperWidth 成員包含在所有作業系統上的值，但是它們可以僅用來選取，或在 Windows 95、 Windows 98 或 Windows Me.正在執行的系統上定義大小dmFormName 成員才有效對於正在執行 Windows NT 或 Windows 2000 的系統。可在任何 32 位元 Windows，作業系統上使用 dmPaperSize 成員，只要指派給它的值對應至大小或在該系統定義的表單。
因此，正在執行 Windows 95、 Windows 98 或 Windows Me 的系統上，您可以定義自訂頁面大小 (長度) 的高度和寬度或預先定義的紙張大小。Windows NT 為基礎或 Windows 2000 基礎系統只使用已定義的表單，您可以選取下列其中一種方式中的頁面大小： 設定 dmFormName 或指派 dmPaperSize 有效常數 」 值。
若要在 Windows NT 或 Windows 2000 上使用特定的紙張大小，您必須為它定義表單。Visual Basic 印表機 物件有 PageSize]、 [高度，] 和 [公開 (Expose) 的 [DEVMODE dmPaperSize、 dmPaperLength 和 dmPaperWidth 成員的 Width 屬性。但是，印表機 物件並未顯露一種方法依名稱，選取表單也不會有方法可以在執行階段加入自訂的表單。我們必須使用來建立自訂的表單及/或選取表單的 Win32 應用程式發展介面 (API)，依名稱。
它必須被強調一些這些函式需要印表機上的完全控制] 權限。因此，SetForm、 AddForm 和 DeleteForm 功能幾乎永遠不會運作為印表機安裝成網路印表機。這是因為網路印表機驅動程式不在本機安裝，但位於印表機的伺服器上，您的使用者帳戶不太可能在印表機伺服器上有系統管理員權限。這不同於正在執行 Windows 95、 Windows 98 或 Windows Me，在其中所有的印表機驅動程式 (甚至網路印表機) 會永遠安裝在本機的系統。但是，您可以將網路印表機安裝為本機印表機在 Windows NT 或 Windows 2000 中，並將連接埠設定為 [印表機佇列。然後您可以使用這些函式，而不會影響到共用印表機的使用者進行變更。
Option Explicit
Private Sub Command1_Click()
Dim FormName As String
FormName = "MyCustomForm" ' Use special, user-defined form.
UseForm FormName
End Sub
Private Sub Command2_Click()
Dim FormName As String
' Get FormName from the ListBox.
On Error GoTo ListBoxERR ' Trap for no selection.
FormName = Mid(List1.Text, 1, InStr(1, List1.Text, " -") - 1)
On Error GoTo 0 ' Turn off Error trap.
UseForm FormName
Exit Sub
ListBoxERR:
MsgBox "Select a printer from the ListBox before using this option.", _
vbExclamation
End Sub
Private Sub Command3_Click()
Dim RetVal As Long
Dim PrinterHandle As Long ' Handle to printer
Dim PrinterName As String
Dim FormName As String
Dim Continue As Long
' Delete form that is selected in ListBox.
PrinterName = Printer.DeviceName ' Current printer
If OpenPrinter(PrinterName, PrinterHandle, 0&) Then
On Error GoTo ListBoxERR ' Trap for no selection.
FormName = Mid(List1.Text, 1, InStr(1, List1.Text, " -") - 1)
On Error GoTo 0 ' Turn off Error trap.
Continue = MsgBox("Are you sure you want to permanently remove " & _
FormName & " from " & PrinterName & "?", vbYesNo)
If Continue = vbYes Then
RetVal = DeleteForm(PrinterHandle, FormName & Chr(0))
If RetVal <> 0 Then ' DeleteForm succeeded.
List1.Clear ' Reflect the deletion in the ListBox.
Form_Load ' Rebuild the list.
MsgBox FormName & " deleted!", vbInformation, "Success!"
Else
MsgBox FormName & " not deleted!" & vbCrLf & vbCrLf & _
"Error code: " & Err.LastDllError, vbInformation, "Failure!"
End If
End If
ClosePrinter (PrinterHandle)
End If
Exit Sub
ListBoxERR:
MsgBox "Select a printer from the ListBox before using this option.", _
vbExclamation
ClosePrinter (PrinterHandle)
End Sub
Private Sub Form_Load()
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 BytesNeeded As Long
Dim PrinterName As String ' Current printer
Dim PrinterHandle As Long ' Handle to printer
Dim FormItem As String ' For ListBox
Dim RetVal As Long
Dim FormSize As SIZEL ' Size of desired form
PrinterName = Printer.DeviceName ' Current printer
If OpenPrinter(PrinterName, PrinterHandle, 0&) Then
With FormSize ' Desired page size
.cx = 214000
.cy = 216000
End With
ReDim aFI1(1)
RetVal = EnumForms(PrinterHandle, 1, aFI1(0), 0&, BytesNeeded, _
NumForms)
ReDim Temp(BytesNeeded)
ReDim aFI1(BytesNeeded / Len(FI1))
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)
' List name and size including the count (index).
FormItem = PtrCtoVbString(.pName) & " - " & .Size.cx / 1000 & _
" mm X " & .Size.cy / 1000 & " mm (" & I + 1 & ")"
List1.AddItem FormItem
End With
Next I
ClosePrinter (PrinterHandle)
End If
End Sub
Private Sub UseForm(FormName As String)
Dim RetVal As Integer
RetVal = SelectForm(FormName, Me.hwnd)
Select Case RetVal
Case FORM_NOT_SELECTED ' 0
' Selection failed!
MsgBox "Unable to retrieve From name", vbExclamation, _
"Operation halted!"
Case FORM_SELECTED ' 1
' Selection succeeded!
PrintTest ' Comment this line to avoid printing
Case FORM_ADDED ' 2
' Form added and selected.
List1.Clear ' Reflect the addition in the ListBox
Form_Load ' by rebuilding the list.
End Select
End Sub
從 [專案] 功能表加入新的模組 [Module1。
下列程式碼貼到 Module1 中：
Option Explicit
Public 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 Long
Public Declare Function AddForm Lib "winspool.drv" Alias "AddFormA" _
(ByVal hPrinter As Long, ByVal Level As Long, pForm As Byte) As Long
Public Declare Function DeleteForm Lib "winspool.drv" Alias "DeleteFormA" _
(ByVal hPrinter As Long, ByVal pFormName As String) As Long
Public Declare Function OpenPrinter Lib "winspool.drv" _
Alias "OpenPrinterA" (ByVal pPrinterName As String, _
phPrinter As Long, ByVal pDefault As Long) As Long
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, _
pDevModeOutput As Any, pDevModeInput As Any, ByVal fMode As Long) _
As Long
Public Declare Function ResetDC Lib "gdi32" Alias "ResetDCA" _
(ByVal hdc As Long, lpInitData As Any) As Long
Public 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 Long
Public 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 = 2
Public Type RECTL
Left As Long
Top As Long
Right As Long
Bottom As Long
End Type
Public Type SIZEL
cx As Long
cy As Long
End Type
Public 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 Type
Public Type sFORM_INFO_1
Flags As Long
pName As String
Size As SIZEL
ImageableArea As RECTL
End Type
Public 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 Type
Public 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
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 Function
Public 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"
End If
AddNewForm = "none"
Else
AddNewForm = FI1.pName
End If
End Function
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 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
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.
If FormName = "MyCustomForm" Then
' Use form "MyCustomForm", adding it if necessary.
' Set the desired size of the form needed.
With FormSize ' Given in thousandths of millimeters
.cx = 214000 ' width
.cy = 216000 ' height
End With
If GetFormName(PrinterHandle, FormSize, FormName) = 0 Then
' Form not found - Either of the next 2 lines will work.
'FormName = AddNewForm(PrinterHandle, FormSize, "MyCustomForm")
AddNewForm PrinterHandle, FormSize, "MyCustomForm"
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
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 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
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。
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