vb如何连接打印机

如果是要调用打印机，可以参照下面代码
1.模块中添加

Sub main()'为了测试方便这里方法命名为main
Dim P As New clsPrintDialog
P.Flags = cdlPDPageNums + cdlPDDisablePrintToFile + cdlPDNoSelection
P.Min = 1
P.FromPage = 3
P.ToPage = 5
P.Max = 100
P.ShowPrinter
Debug.Print Printer.DeviceName
Debug.Print Printer.Copies
Debug.Print P.FromPage
Debug.Print P.ToPage
' Write here Print Code with Printer Object...
End Sub

2.新建类模块

Option Explicit
Private Const CCHDEVICENAME = 32
Private Const CCHFORMNAME = 32
Private Const GMEM_FIXED = &H0
Private Const GMEM_MOVEABLE = &H2
Private Const GMEM_ZEROINIT = &H40
Private Const DM_DUPLEX = &H1000&
Private Const DM_ORIENTATION = &H1&
'
' --- API TYPES DEFINITION
'
Private Type PRINTDLG_TYPE
lStructSize As Long
hwndOwner As Long
hDevMode As Long
hDevNames As Long
hdc As Long
Flags As Long
nFromPage As Integer
nToPage As Integer
nMinPage As Integer
nMaxPage As Integer
nCopies As Integer
hInstance As Long
lCustData As Long
lpfnPrintHook As Long
lpfnSetupHook As Long
lpPrintTemplateName As String
lpSetupTemplateName As String
hPrintTemplate As Long
hSetupTemplate As Long
End Type
Private Type DEVNAMES_TYPE
wDriverOffset As Integer
wDeviceOffset As Integer
wOutputOffset As Integer
wDefault As Integer
extra As String * 100
End Type
Private Type DEVMODE_TYPE
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 Integer
dmPelsWidth As Long
dmPelsHeight As Long
dmDisplayFlags As Long
dmDisplayFrequency As Long
End Type
'
' --- API DECLARATIONS
'
Private Declare Function PrintDialog Lib "comdlg32.dll" Alias "PrintDlgA" _
(pPrintdlg As PRINTDLG_TYPE) As Long
Private Declare Sub CopyMemory Lib "kernel32" Alias "RtlMoveMemory" _
(hpvDest As Any, _
hpvSource As Any, _
ByVal cbCopy As Long)
Private Declare Function GlobalLock Lib "kernel32" (ByVal hMem As Long) As Long
Private Declare Function GlobalUnlock Lib "kernel32" _
(ByVal hMem As Long) As Long
Private Declare Function GlobalAlloc Lib "kernel32" _
(ByVal wFlags As Long, _
ByVal dwBytes As Long) As Long
Private Declare Function GlobalFree Lib "kernel32" (ByVal hMem As Long) As Long
'
' --- PUBLIC ENUM
'
Public Enum PrinterConstants
cdlPDAllPages = &H0
cdlPDCollate = &H10
cdlPDDisablePrintToFile = &H80000
cdlPDHelpButton = &H800
cdlPDHidePrintToFile = &H100000
cdlPDNoPageNums = &H8
cdlPDNoSelection = &H4
cdlPDNoWarning = &H80
cdlPDPageNums = &H2
cdlPDPrintSetup = &H40
cdlPDPrintToFile = &H20
cdlPDReturnDC = &H100
cdlPDReturnDefault = &H400
cdlPDReturnIC = &H200
cdlPDSelection = &H1
cdlPDUseDevModeCopies = &H40000
End Enum
Public Enum ErrorConstants
cdlCancel = 32755
End Enum
'
' --- PRIVATE VARIABLES
'
Private intMinPage As Integer ' Local copy of Min
Private intMaxPage As Integer ' Local copy of Max
Private intFromPage As Integer ' Local copy of FromPage
Private intToPage As Integer ' Local copy of ToPage
' N.B. 0 >= Min >= FromPage >= ToPage >= Max
' If Max=0 then no limits.
'
' --- PUBLIC VARIABLES
'
Public Flags As PrinterConstants
Public CancelError As Boolean
'
' -- INITIALIZE
'
Private Sub Class_Initialize()
intMinPage = 0
intMaxPage = 0
intFromPage = 0
intToPage = 0
CancelError = False
End Sub
'
' -- PUBLIC MEMBERS
'
Property Get Min() As Integer
Min = intMinPage
End Property
Property Let Min(ByVal intNewValue As Integer)
intNewValue = IIf(intNewValue > 0, intNewValue, 0)
intMinPage = intNewValue
If intNewValue > intFromPage Then _
intFromPage = intNewValue
If intNewValue > intToPage Then _
intToPage = intNewValue
If intNewValue > intMaxPage Then _
intMaxPage = intNewValue
End Property
Property Get FromPage() As Integer
FromPage = intFromPage
End Property
Property Let FromPage(ByVal intNewValue As Integer)
intNewValue = IIf(intNewValue > 0, intNewValue, 0)
intFromPage = intNewValue
If intNewValue > intToPage Then _
intToPage = intNewValue
If intNewValue > intMaxPage Then _
intMaxPage = intNewValue
If intNewValue < intMinPage Then _
intMinPage = intNewValue
End Property
Property Get ToPage() As Integer
ToPage = intToPage
End Property
Property Let ToPage(ByVal intNewValue As Integer)
intNewValue = IIf(intNewValue > 0, intNewValue, 0)
intToPage = intNewValue
If intNewValue > intMaxPage Then _
intMaxPage = intNewValue
If intNewValue < intFromPage Then _
intFromPage = intNewValue
If intNewValue < intMinPage Then _
intMinPage = intNewValue
End Property
Property Get Max() As Integer
Max = intMaxPage
End Property
Property Let Max(ByVal intNewValue As Integer)
intNewValue = IIf(intNewValue > 0, intNewValue, 0)
intMaxPage = intNewValue
If intNewValue < intToPage Then _
intToPage = intNewValue
If intNewValue < intFromPage Then _
intFromPage = intNewValue
If intNewValue < intMinPage Then _
intMinPage = intNewValue
End Property
Public Function ShowPrinter() As Boolean
Dim PrintDlg As PRINTDLG_TYPE
Dim DevMode As DEVMODE_TYPE
Dim DevName As DEVNAMES_TYPE
Dim lpDevMode As Long, lpDevName As Long
Dim intReturn As Integer
Dim objPrinter As Printer
Dim strNewPrinterName As String
Dim blnCancel As Boolean
blnCancel = False
' Use PrintDialog to get the handle to a memory
' block with a DevMode and DevName structures
With PrintDlg
.lStructSize = Len(PrintDlg)
.hwndOwner = 0
.Flags = Flags
.nMinPage = intMinPage
.nFromPage = intFromPage
.nToPage = intToPage
.nMaxPage = intMaxPage
End With
'Set the current orientation and duplex setting
DevMode.dmDeviceName = Printer.DeviceName
DevMode.dmSize = Len(DevMode)
DevMode.dmFields = DM_ORIENTATION Or DM_DUPLEX
DevMode.dmOrientation = Printer.Orientation
On Error Resume Next
DevMode.dmDuplex = Printer.Duplex
On Error GoTo 0
'Allocate memory for the initialization hDevMode structure
'and copy the settings gathered above into this memory
PrintDlg.hDevMode = GlobalAlloc(GMEM_MOVEABLE Or _
GMEM_ZEROINIT, Len(DevMode))
lpDevMode = GlobalLock(PrintDlg.hDevMode)
If lpDevMode > 0 Then
CopyMemory ByVal lpDevMode, DevMode, Len(DevMode)
intReturn = GlobalUnlock(lpDevMode)
End If
'Set the current driver, device, and port name strings
With DevName
.wDriverOffset = 8
.wDeviceOffset = .wDriverOffset + 1 + Len(Printer.DriverName)
.wOutputOffset = .wDeviceOffset + 1 + Len(Printer.Port)
.wDefault = 0
End With
With Printer
DevName.extra = .DriverName & Chr(0) & _
.DeviceName & Chr(0) & .Port & Chr(0)
End With
'Allocate memory for the initial hDevName structure
'and copy the settings gathered above into this memory
PrintDlg.hDevNames = GlobalAlloc(GMEM_MOVEABLE Or _
GMEM_ZEROINIT, Len(DevName))
lpDevName = GlobalLock(PrintDlg.hDevNames)
If lpDevName > 0 Then
CopyMemory ByVal lpDevName, DevName, Len(DevName)
intReturn = GlobalUnlock(lpDevName)
End If
'Call the print dialog up and let the user make changes
If PrintDialog(PrintDlg) Then
'First get the DevName structure.
lpDevName = GlobalLock(PrintDlg.hDevNames)
CopyMemory DevName, ByVal lpDevName, 45
intReturn = GlobalUnlock(lpDevName)
With PrintDlg
Flags = .Flags
intFromPage = .nFromPage
intToPage = .nToPage
End With
GlobalFree PrintDlg.hDevNames
'Next get the DevMode structure and set the printer
'properties appropriately
lpDevMode = GlobalLock(PrintDlg.hDevMode)
CopyMemory DevMode, ByVal lpDevMode, Len(DevMode)
intReturn = GlobalUnlock(PrintDlg.hDevMode)
GlobalFree PrintDlg.hDevMode
strNewPrinterName = UCase$(Left(DevMode.dmDeviceName, _
InStr(DevMode.dmDeviceName, Chr$(0)) - 1))
If Printer.DeviceName <> strNewPrinterName Then
For Each objPrinter In Printers
If UCase$(objPrinter.DeviceName) = strNewPrinterName Then _
Set Printer = objPrinter
Next
End If
On Error Resume Next
'Set printer object properties according to selections made
'by user
With Printer
.Copies = DevMode.dmCopies
.Duplex = DevMode.dmDuplex
.Orientation = DevMode.dmOrientation
End With
On Error GoTo 0
Else
GlobalFree PrintDlg.hDevMode
GlobalFree PrintDlg.hDevNames
blnCancel = True
If CancelError Then _
Err.Raise cdlCancel, "LM PrintDialog", "Cancel."
End If
ShowPrinter = Not blnCancel
End Function

使用Printer对象