Making data move from a computer to a printer is. How to Get Printer Information Using VB6. View them at Microsoft’s Printer Object for Visual Basic 6.0. Get Name of Printer Driver. Visual Basic.NET Forums on Bytes.
I have run into a problem in the development of a new POS interface for a client in that they would like to use a fast text-only printer, but their POS interface is written in VB.Net which doesn't appear to support direct printing of raw information. I have the system working, printing as a graphic (Graphic.Drawstring method), but the printer operates quite slow, and I do not have the ability to trigger the cash drawer using this method. Does anyone have any ideas on how I can either: a) Write raw information to the 'Generic / Text Only' printer driver through VB.Net b) Interface through another program or DLL to send the required text and codes to the printer. Currently, if I send my graphical information to the printer (Epson TM-U200) through the 'Generic / Text Only' printer in Windows I get the following: An unhandled exception of type 'System.ComponentModel.Win 32Exceptio n' occurred in system.drawing.dll Additional information: The data area passed to a system call is too small The code where this is being called is as follows: Dim pd As New Printing.PrintDocument() AddHandler pd.PrintPage, AddressOf Me.pd_PrintPage pd.Print() ------------ Any ideas or help would be MUCH appreciated as I have to deliver this app quickly. Let me see if I understand you correctly. You want to print text to some printer.
And you want to use the 'Generic / Text Only' print driver rather than the 'real' printer driver? Are you concerned that sending print jobs to the 'real' print driver will be slower? The print classes in.Net are all graphical. So the only way to print text (to any printer, regardless of the print driver) is to render the text with the graphics.drawstring object. Just because the.Net framework doesn't support directly talking to the printer doesn't mean that you can just use API calls to do the printer.
Print raw data to the printer: Imports System.IO Imports System.Drawing.Printing Imports System.Runtime.InteropServ ices Public Class Form1 Inherits System.Windows.Forms.Form #Region ' Windows Form Designer generated code ' #End Region ' Click event handler for a button - designed to show how to use the ' SendFileToPrinter and SendBytesToPrinter functions. Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click ' Allow the user to select a file. Dim ofd As New OpenFileDialog() If ofd.ShowDialog(Me) Then ' Allow the user to select a printer.
Dim pd As New PrintDialog() pd.PrinterSettings = New PrinterSettings() If pd.ShowDialog(Me) Then ' Print the file to the printer. RawPrinterHelper.SendFileT oPrinter(p d.PrinterS ettings.Pr interName, ofd.FileName) End If End If End Sub ' Button1_Click() ' Click event handler for a button - designed to show how to use the ' SendBytesToPrinter function to send a string to the printer. Pdf Zentangle Patterns Images. Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click Dim s As String Dim pd As New PrintDialog() ' You need a string to send. S = ' Hello, this is a test' & vbCrLf s &= ' Second line' ' Open the printer dialog box, and then allow the user to select a printer. Pd.PrinterSettings = New PrinterSettings() If pd.ShowDialog(Me) Then RawPrinterHelper.SendStrin gToPrinter (pd.Printe rSettings. Snow Leopard Vmdk And Darwin_snow Isotopes.
PrinterNam e, s) End If ' a new page s = ' second line' & vbCrLf RawPrinterHelper.SendStrin gToPrinter (pd.Printe rSettings. Almost there. I can now print RAW data to the printer. One other problem. I can't get the printer to take the Control Codes to spring the cash drawer even in raw mode. Epson says that I simply have to select the 'Control' font (which doesn't appear to be a real font) and then just send the characters that are necessary (27,112,0,48) to trigger the drawer.