看看这个,OK搞定 http://support.microsoft.com/support/kb/articles/Q175/0/83.aspHOWTO: Print Line-by-Line to a Printer -------------------------------------------------------------------------------- The information in this article applies to:Microsoft Visual Basic Learning Edition for Windows, versions 5.0, 6.0 Microsoft Visual Basic Professional Edition for Windows, versions 5.0, 6.0 Microsoft Visual Basic Enterprise Edition for Windows, versions 5.0, 6.0 Microsoft Visual Basic Standard Edition, 32-bit, for Windows, version 4.0 Microsoft Visual Basic Professional Edition, 32-bit, for Windows, version 4.0 Microsoft Visual Basic Enterprise Edition, 32-bit, for Windows, version 4.0-------------------------------------------------------------------------------- SUMMARY Printing page-by-page is the Windows standard; however, it is sometimes desirable to print to a printer line-by-line rather than page-by-page. One advantage to printing line-by-line is that if there is a power failure while printing, the data lost is one log item, at most. The Visual Basic Printer object does not support this mode, but the Win32 API accomplishes this handily. MORE INFORMATION This technique will work only when printing to a local line printer, typically a dot matrix printer. Laser and Ink Jet printers are page printers and will not print in single line mode. Create a new Visual Basic project and place a CommandButton on Form1. Add the following code to Form1: Option Explicit Private Type DOCINFO pDocName As String pOutputFile As String pDatatype As String End Type Private Declare Function ClosePrinter Lib "winspool.drv" (ByVal _ hPrinter As Long) As Long Private Declare Function EndDocPrinter Lib "winspool.drv" (ByVal _ hPrinter As Long) As Long Private Declare Function EndPagePrinter Lib "winspool.drv" (ByVal _ hPrinter As Long) As Long Private Declare Function OpenPrinter Lib "winspool.drv" Alias _ "OpenPrinterA" (ByVal pPrinterName As String, phPrinter As Long, _ ByVal pDefault As Long) As Long Private Declare Function StartDocPrinter Lib "winspool.drv" Alias _ "StartDocPrinterA" (ByVal hPrinter As Long, ByVal Level As Long, _ pDocInfo As DOCINFO) As Long Private Declare Function StartPagePrinter Lib "winspool.drv" (ByVal _ hPrinter As Long) As Long Private Declare Function WritePrinter Lib "winspool.drv" (ByVal _ hPrinter As Long, pBuf As Any, ByVal cdBuf As Long, _ pcWritten As Long) As Long Dim lhPrinter As Long Private Sub Command1_Click() Dim lReturn As Long Dim lpcWritten As Long Dim sWrittenData As String sWrittenData = "How's that for Magic !!!!" & vbCrLf lReturn = WritePrinter(lhPrinter, ByVal sWrittenData, _ Len(sWrittenData), lpcWritten) End Sub Private Sub Form_Load() Dim lReturn As Long Dim lDoc As Long Dim MyDocInfo As DOCINFO lReturn = OpenPrinter(Printer.DeviceName, lhPrinter, 0) If lReturn = 0 Then MsgBox "The Printer Name you typed wasn't recognized." Exit Sub End If MyDocInfo.pDocName = "AAAAAA" MyDocInfo.pOutputFile = vbNullString MyDocInfo.pDatatype = vbNullString lDoc = StartDocPrinter(lhPrinter, 1, MyDocInfo) Call StartPagePrinter(lhPrinter) End Sub Private Sub Form_Unload(Cancel As Integer) Dim lReturn As Long lReturn = EndPagePrinter(lhPrinter) lReturn = EndDocPrinter(lhPrinter) lReturn = ClosePrinter(lhPrinter) End Sub Make the logging printer the default and run the application. Every time you click Command1, a line should be immediately printed to your printer. WARNING: Pressing the End button on the toolbar or selecting the Run / End menu option will not close the current print job and may block further jobs from printing to that printer. This is because the code to close the print job is in the Form_Unload event. This event is not executed when the sample is closed by the design environment. Always terminate the application by clicking the Close button, using the System menu, or entering Alt-F4. REFERENCES For more information about using the Win32 API to send data directly to the printer, please see the following article in the Microsoft Knowledge Base: Q154078 : HOWTO: Send Raw Data to a Printer Using the Win32 API from VB Additional query words: receipt Keywords : kbprint kbPrinting kbVBp kbVBp400 kbVBp500 kbVBp600 kbGrpDSVB Issue type : kbhowto Technology : kbVBSearch kbAudDeveloper kbZNotKeyword6 kbZNotKeyword2 kbVB500Search kbVB600Search kbVBA500 kbVBA600 kbVB500 kbVB600 kbVB400Search kbVB400
http://support.microsoft.com/support/kb/articles/Q175/0/83.aspHOWTO: Print Line-by-Line to a Printer --------------------------------------------------------------------------------
The information in this article applies to:Microsoft Visual Basic Learning Edition for Windows, versions 5.0, 6.0
Microsoft Visual Basic Professional Edition for Windows, versions 5.0, 6.0
Microsoft Visual Basic Enterprise Edition for Windows, versions 5.0, 6.0
Microsoft Visual Basic Standard Edition, 32-bit, for Windows, version 4.0
Microsoft Visual Basic Professional Edition, 32-bit, for Windows, version 4.0
Microsoft Visual Basic Enterprise Edition, 32-bit, for Windows, version 4.0--------------------------------------------------------------------------------
SUMMARY
Printing page-by-page is the Windows standard; however, it is sometimes desirable to print to a printer line-by-line rather than page-by-page. One advantage to printing line-by-line is that if there is a power failure while printing, the data lost is one log item, at most. The Visual Basic Printer object does not support this mode, but the Win32 API accomplishes this handily. MORE INFORMATION
This technique will work only when printing to a local line printer, typically a dot matrix printer. Laser and Ink Jet printers are page printers and will not print in single line mode. Create a new Visual Basic project and place a CommandButton on Form1.
Add the following code to Form1: Option Explicit Private Type DOCINFO
pDocName As String
pOutputFile As String
pDatatype As String
End Type Private Declare Function ClosePrinter Lib "winspool.drv" (ByVal _
hPrinter As Long) As Long
Private Declare Function EndDocPrinter Lib "winspool.drv" (ByVal _
hPrinter As Long) As Long
Private Declare Function EndPagePrinter Lib "winspool.drv" (ByVal _
hPrinter As Long) As Long
Private Declare Function OpenPrinter Lib "winspool.drv" Alias _
"OpenPrinterA" (ByVal pPrinterName As String, phPrinter As Long, _
ByVal pDefault As Long) As Long
Private Declare Function StartDocPrinter Lib "winspool.drv" Alias _
"StartDocPrinterA" (ByVal hPrinter As Long, ByVal Level As Long, _
pDocInfo As DOCINFO) As Long
Private Declare Function StartPagePrinter Lib "winspool.drv" (ByVal _
hPrinter As Long) As Long
Private Declare Function WritePrinter Lib "winspool.drv" (ByVal _
hPrinter As Long, pBuf As Any, ByVal cdBuf As Long, _
pcWritten As Long) As Long Dim lhPrinter As Long Private Sub Command1_Click()
Dim lReturn As Long
Dim lpcWritten As Long
Dim sWrittenData As String
sWrittenData = "How's that for Magic !!!!" & vbCrLf
lReturn = WritePrinter(lhPrinter, ByVal sWrittenData, _
Len(sWrittenData), lpcWritten)
End Sub Private Sub Form_Load()
Dim lReturn As Long
Dim lDoc As Long
Dim MyDocInfo As DOCINFO lReturn = OpenPrinter(Printer.DeviceName, lhPrinter, 0)
If lReturn = 0 Then
MsgBox "The Printer Name you typed wasn't recognized."
Exit Sub
End If
MyDocInfo.pDocName = "AAAAAA"
MyDocInfo.pOutputFile = vbNullString
MyDocInfo.pDatatype = vbNullString
lDoc = StartDocPrinter(lhPrinter, 1, MyDocInfo)
Call StartPagePrinter(lhPrinter)
End Sub Private Sub Form_Unload(Cancel As Integer)
Dim lReturn As Long lReturn = EndPagePrinter(lhPrinter)
lReturn = EndDocPrinter(lhPrinter)
lReturn = ClosePrinter(lhPrinter)
End Sub
Make the logging printer the default and run the application. Every time you click Command1, a line should be immediately printed to your printer.
WARNING: Pressing the End button on the toolbar or selecting the Run / End menu option will not close the current print job and may block further jobs from printing to that printer. This is because the code to close the print job is in the Form_Unload event. This event is not executed when the sample is closed by the design environment. Always terminate the application by clicking the Close button, using the System menu, or entering Alt-F4. REFERENCES
For more information about using the Win32 API to send data directly to the printer, please see the following article in the Microsoft Knowledge Base:
Q154078 : HOWTO: Send Raw Data to a Printer Using the Win32 API from VB Additional query words: receipt Keywords : kbprint kbPrinting kbVBp kbVBp400 kbVBp500 kbVBp600 kbGrpDSVB
Issue type : kbhowto
Technology : kbVBSearch kbAudDeveloper kbZNotKeyword6 kbZNotKeyword2 kbVB500Search kbVB600Search kbVBA500 kbVBA600 kbVB500 kbVB600 kbVB400Search kbVB400