控制打印方向'Constants used in the DevMode structure Private Const CCHDEVICENAME = 32 Private Const CCHFORMNAME = 32'Constants for NT security Private Const STANDARD_RIGHTS_REQUIRED = &HF0000 Private Const PRINTER_ACCESS_ADMINISTER = &H4 Private Const PRINTER_ACCESS_USE = &H8 Private Const PRINTER_ALL_ACCESS = (STANDARD_RIGHTS_REQUIRED Or PRINTER_ACCESS_ADMINISTER Or PRINTER_ACCESS_USE)'Constants used to make changes to the values contained in the DevMode Private Const DM_MODIFY = 8 Private Const DM_IN_BUFFER = DM_MODIFY Private Const DM_COPY = 2 Private Const DM_OUT_BUFFER = DM_COPY Private Const DM_DUPLEX = &H1000& Private Const DMDUP_SIMPLEX = 1 Private Const DMDUP_VERTICAL = 2 Private Const DMDUP_HORIZONTAL = 3 Private Const DM_ORIENTATION = &H1& Private PageDirection As Integer '------USER DEFINED TYPES'The DevMode structure contains printing parameters. 'Note that this only represents the PUBLIC portion of the DevMode. ' The full DevMode also contains a variable length PRIVATE section ' which varies in length and content between printer drivers. 'NEVER use this User Defined Type directly with any API call. ' Always combine it into a FULL DevMode structure and then send the ' full DevMode to the API call. 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 dmLogPixels As Integer dmBitsPerPel As Long dmPelsWidth As Long dmPelsHeight As Long dmDisplayFlags As Long dmDisplayFrequency As Long dmICMMethod As Long ' // Windows 95 only dmICMIntent As Long ' // Windows 95 only dmMediaType As Long ' // Windows 95 only dmDitherType As Long ' // Windows 95 only dmReserved1 As Long ' // Windows 95 only dmReserved2 As Long ' // Windows 95 only End TypePrivate Type PRINTER_DEFAULTS 'Note: ' The definition of Printer_Defaults in the VB5 API viewer is incorrect. ' Below, pDevMode has been corrected to LONG. pDatatype As String pDevMode As Long DesiredAccess As Long End Type '------DECLARATIONSPrivate Declare Function OpenPrinter Lib "winspool.drv" Alias "OpenPrinterA" (ByVal pPrinterName As String, phPrinter As Long, pDefault As PRINTER_DEFAULTS) As Long Private Declare Function SetPrinter Lib "winspool.drv" Alias "SetPrinterA" (ByVal hPrinter As Long, ByVal Level As Long, pPrinter As Any, ByVal Command As Long) As Long Private Declare Function GetPrinter Lib "winspool.drv" Alias "GetPrinterA" (ByVal hPrinter As Long, ByVal Level As Long, pPrinter As Any, ByVal cbBuf As Long, pcbNeeded As Long) As Long Private Declare Sub CopyMemory Lib "kernel32" Alias "RtlMoveMemory" (hpvDest As Any, hpvSource As Any, ByVal cbCopy As Long) Private Declare Function ClosePrinter Lib "winspool.drv" (ByVal hPrinter As Long) As Long'The following is an unusual declaration of DocumentProperties: ' pDevModeOutput and pDevModeInput are usually declared ByRef. They are declared ' ByVal in this program because we're using a Printer_Info_2 structure. ' The pi2 structure contains a variable of type LONG which contains the address ' of the DevMode structure (this is called a pointer). This LONG variable must ' be passed ByVal. ' Normally this function is called with a BYTE ARRAY which contains the DevMode ' structure and the Byte Array is passed ByRef. Private Declare Function DocumentProperties Lib "winspool.drv" Alias "DocumentPropertiesA" (ByVal hWnd As Long, ByVal hPrinter As Long, ByVal pDeviceName As String, ByVal pDevModeOutput As Any, ByVal pDevModeInput As Any, ByVal fMode As Long) As LongPrivate Sub SetOrientation(NewSetting As Long, chng As Integer, ByVal frm As Form) Dim PrinterHandle As Long Dim PrinterName As String Dim pd As PRINTER_DEFAULTS Dim MyDevMode As DEVMODE Dim Result As Long Dim Needed As Long Dim pFullDevMode As Long Dim pi2_buffer() As Long 'This is a block of memory for the Printer_Info_2 structure 'If you need to use the Printer_Info_2 User Defined Type, the ' definition of Printer_Info_2 in the API viewer is incorrect. ' pDevMode and pSecurityDescriptor should be defined As Long.
PrinterName = Printer.DeviceName If PrinterName = "" Then Exit Sub End If
pd.pDatatype = vbNullString pd.pDevMode = 0& 'Printer_Access_All is required for NT security pd.DesiredAccess = PRINTER_ALL_ACCESS
Result = OpenPrinter(PrinterName, PrinterHandle, pd)
'The first call to GetPrinter gets the size, in bytes, of the buffer needed. 'This value is divided by 4 since each element of pi2_buffer is a long. Result = GetPrinter(PrinterHandle, 2, ByVal 0&, 0, Needed) ReDim pi2_buffer((Needed \ 4)) Result = GetPrinter(PrinterHandle, 2, pi2_buffer(0), Needed, Needed)
'The seventh element of pi2_buffer is a Pointer to a block of memory ' which contains the full DevMode (including the PRIVATE portion). pFullDevMode = pi2_buffer(7)
'Copy the Public portion of FullDevMode into our DevMode structure Call CopyMemory(MyDevMode, ByVal pFullDevMode, Len(MyDevMode))
'Copy our DevMode structure back into FullDevMode Call CopyMemory(ByVal pFullDevMode, MyDevMode, Len(MyDevMode))
'Copy our changes to "the PUBLIC portion of the DevMode" into "the PRIVATE portion of the DevMode" Result = DocumentProperties(frm.hWnd, PrinterHandle, PrinterName, ByVal pFullDevMode, ByVal pFullDevMode, DM_IN_BUFFER Or DM_OUT_BUFFER)
'Update the printer's default properties (to verify, go to the Printer folder ' and check the properties for the printer) Result = SetPrinter(PrinterHandle, 2, pi2_buffer(0), 0&)
Call ClosePrinter(PrinterHandle)
'Note: Once "Set Printer = " is executed, anywhere in the code, after that point ' changes made with SetPrinter will ONLY affect the system-wide printer -- ' -- the changes will NOT affect the VB printer object. ' Therefore, it may be necessary to reset the printer object's parameters to ' those chosen in the devmode. Dim p As Printer For Each p In Printers If p.DeviceName = PrinterName Then Set Printer = p Exit For End If Next p Printer.Duplex = MyDevMode.dmDuplex End SubPublic Sub ChngPrinterOrientationLandscape(ByVal frm As Form) PageDirection = 2 Call SetOrientation(DMDUP_SIMPLEX, PageDirection, frm) End SubPublic Sub ResetPrinterOrientation(ByVal frm As Form)
If PageDirection = 1 Then PageDirection = 2 Else PageDirection = 1 End If Call SetOrientation(DMDUP_SIMPLEX, PageDirection, frm) End SubPublic Sub ChngPrinterOrientationPortrait(ByVal frm As Form) PageDirection = 1 Call SetOrientation(DMDUP_SIMPLEX, PageDirection, frm) End Sub
datareport.show后，便出现打印预览画面，页面纵向放置，可我改为横向后，怎么可以在预览一下呢？
Private Const CCHDEVICENAME = 32
Private Const CCHFORMNAME = 32'Constants for NT security
Private Const STANDARD_RIGHTS_REQUIRED = &HF0000
Private Const PRINTER_ACCESS_ADMINISTER = &H4
Private Const PRINTER_ACCESS_USE = &H8
Private Const PRINTER_ALL_ACCESS = (STANDARD_RIGHTS_REQUIRED Or PRINTER_ACCESS_ADMINISTER Or PRINTER_ACCESS_USE)'Constants used to make changes to the values contained in the DevMode
Private Const DM_MODIFY = 8
Private Const DM_IN_BUFFER = DM_MODIFY
Private Const DM_COPY = 2
Private Const DM_OUT_BUFFER = DM_COPY
Private Const DM_DUPLEX = &H1000&
Private Const DMDUP_SIMPLEX = 1
Private Const DMDUP_VERTICAL = 2
Private Const DMDUP_HORIZONTAL = 3
Private Const DM_ORIENTATION = &H1&
Private PageDirection As Integer
'------USER DEFINED TYPES'The DevMode structure contains printing parameters.
'Note that this only represents the PUBLIC portion of the DevMode.
' The full DevMode also contains a variable length PRIVATE section
' which varies in length and content between printer drivers.
'NEVER use this User Defined Type directly with any API call.
' Always combine it into a FULL DevMode structure and then send the
' full DevMode to the API call.
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
dmLogPixels As Integer
dmBitsPerPel As Long
dmPelsWidth As Long
dmPelsHeight As Long
dmDisplayFlags As Long
dmDisplayFrequency As Long
dmICMMethod As Long ' // Windows 95 only
dmICMIntent As Long ' // Windows 95 only
dmMediaType As Long ' // Windows 95 only
dmDitherType As Long ' // Windows 95 only
dmReserved1 As Long ' // Windows 95 only
dmReserved2 As Long ' // Windows 95 only
End TypePrivate Type PRINTER_DEFAULTS
'Note:
' The definition of Printer_Defaults in the VB5 API viewer is incorrect.
' Below, pDevMode has been corrected to LONG.
pDatatype As String
pDevMode As Long
DesiredAccess As Long
End Type
'------DECLARATIONSPrivate Declare Function OpenPrinter Lib "winspool.drv" Alias "OpenPrinterA" (ByVal pPrinterName As String, phPrinter As Long, pDefault As PRINTER_DEFAULTS) As Long
Private Declare Function SetPrinter Lib "winspool.drv" Alias "SetPrinterA" (ByVal hPrinter As Long, ByVal Level As Long, pPrinter As Any, ByVal Command As Long) As Long
Private Declare Function GetPrinter Lib "winspool.drv" Alias "GetPrinterA" (ByVal hPrinter As Long, ByVal Level As Long, pPrinter As Any, ByVal cbBuf As Long, pcbNeeded As Long) As Long
Private Declare Sub CopyMemory Lib "kernel32" Alias "RtlMoveMemory" (hpvDest As Any, hpvSource As Any, ByVal cbCopy As Long)
Private Declare Function ClosePrinter Lib "winspool.drv" (ByVal hPrinter As Long) As Long'The following is an unusual declaration of DocumentProperties:
' pDevModeOutput and pDevModeInput are usually declared ByRef. They are declared
' ByVal in this program because we're using a Printer_Info_2 structure.
' The pi2 structure contains a variable of type LONG which contains the address
' of the DevMode structure (this is called a pointer). This LONG variable must
' be passed ByVal.
' Normally this function is called with a BYTE ARRAY which contains the DevMode
' structure and the Byte Array is passed ByRef.
Private Declare Function DocumentProperties Lib "winspool.drv" Alias "DocumentPropertiesA" (ByVal hWnd As Long, ByVal hPrinter As Long, ByVal pDeviceName As String, ByVal pDevModeOutput As Any, ByVal pDevModeInput As Any, ByVal fMode As Long) As LongPrivate Sub SetOrientation(NewSetting As Long, chng As Integer, ByVal frm As Form)
Dim PrinterHandle As Long
Dim PrinterName As String
Dim pd As PRINTER_DEFAULTS
Dim MyDevMode As DEVMODE
Dim Result As Long
Dim Needed As Long
Dim pFullDevMode As Long
Dim pi2_buffer() As Long 'This is a block of memory for the Printer_Info_2 structure
'If you need to use the Printer_Info_2 User Defined Type, the
' definition of Printer_Info_2 in the API viewer is incorrect.
' pDevMode and pSecurityDescriptor should be defined As Long.
PrinterName = Printer.DeviceName
If PrinterName = "" Then
Exit Sub
End If
pd.pDatatype = vbNullString
pd.pDevMode = 0&
'Printer_Access_All is required for NT security
pd.DesiredAccess = PRINTER_ALL_ACCESS
Result = OpenPrinter(PrinterName, PrinterHandle, pd)
'The first call to GetPrinter gets the size, in bytes, of the buffer needed.
'This value is divided by 4 since each element of pi2_buffer is a long.
Result = GetPrinter(PrinterHandle, 2, ByVal 0&, 0, Needed)
ReDim pi2_buffer((Needed \ 4))
Result = GetPrinter(PrinterHandle, 2, pi2_buffer(0), Needed, Needed)
'The seventh element of pi2_buffer is a Pointer to a block of memory
' which contains the full DevMode (including the PRIVATE portion).
pFullDevMode = pi2_buffer(7)
'Copy the Public portion of FullDevMode into our DevMode structure
Call CopyMemory(MyDevMode, ByVal pFullDevMode, Len(MyDevMode))
'Make desired changes
MyDevMode.dmDuplex = NewSetting
MyDevMode.dmFields = DM_DUPLEX Or DM_ORIENTATION
MyDevMode.dmOrientation = chng
'Copy our DevMode structure back into FullDevMode
Call CopyMemory(ByVal pFullDevMode, MyDevMode, Len(MyDevMode))
'Copy our changes to "the PUBLIC portion of the DevMode" into "the PRIVATE portion of the DevMode"
Result = DocumentProperties(frm.hWnd, PrinterHandle, PrinterName, ByVal pFullDevMode, ByVal pFullDevMode, DM_IN_BUFFER Or DM_OUT_BUFFER)
'Update the printer's default properties (to verify, go to the Printer folder
' and check the properties for the printer)
Result = SetPrinter(PrinterHandle, 2, pi2_buffer(0), 0&)
Call ClosePrinter(PrinterHandle)
'Note: Once "Set Printer = " is executed, anywhere in the code, after that point
' changes made with SetPrinter will ONLY affect the system-wide printer --
' -- the changes will NOT affect the VB printer object.
' Therefore, it may be necessary to reset the printer object's parameters to
' those chosen in the devmode.
Dim p As Printer
For Each p In Printers
If p.DeviceName = PrinterName Then
Set Printer = p
Exit For
End If
Next p
Printer.Duplex = MyDevMode.dmDuplex
End SubPublic Sub ChngPrinterOrientationLandscape(ByVal frm As Form)
PageDirection = 2
Call SetOrientation(DMDUP_SIMPLEX, PageDirection, frm)
End SubPublic Sub ResetPrinterOrientation(ByVal frm As Form)
If PageDirection = 1 Then
PageDirection = 2
Else
PageDirection = 1
End If
Call SetOrientation(DMDUP_SIMPLEX, PageDirection, frm)
End SubPublic Sub ChngPrinterOrientationPortrait(ByVal frm As Form) PageDirection = 1
Call SetOrientation(DMDUP_SIMPLEX, PageDirection, frm)
End Sub
你的代码我会细看。
但我实在没听过SP5，能指引一下吗，我急呀，老板星期一就要了。
装了SP5，PRINTER的打印方向就可以改动了。