Want to win a PS4? Go Premium and enter to win our High-Tech Treats giveaway. Enter to Win

x
?
Solved

Setting the desired printer (Easy)

Posted on 1999-01-22
3
Medium Priority
?
156 Views
Last Modified: 2010-04-06
I sometimes need to change the default printer.  I am using the SetPrinter procedure but am not getting any results.  I look in the printer setup dialog and see that it is set, but it does not print there.  Help.
0
Comment
Question by:swig
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
3 Comments
 
LVL 20

Accepted Solution

by:
Madshi earned 20 total points
ID: 1362838
Hi swig,

this is the function I'm using. I hope it solves your problems...

function SetDefaultPrinter(localPrinter: string) : boolean;
var c1   : cardinal;
    pi   : PPrinterInfo2;
    size : cardinal;
begin
    result:=false;
    if OpenPrinter(PChar(localPrinter),c1,@printerDefaults) then begin
      try
        GetPrinter(c1,2,nil,0,@size); pi:=AllocMem(size);
        try
          if not GetPrinter(c1,2,pi,size,@size) then begin
            // AlertError('Standard-Drucker festlegen (1).',LastErrStr);
            exit;
          end;
          pi^.pSecurityDescriptor:=nil;
          if pi^.Attributes and PRINTER_ATTRIBUTE_DEFAULT=0 then begin
            pi^.Attributes:=pi^.Attributes or PRINTER_ATTRIBUTE_DEFAULT;
            if not SetPrinter(c1,2,pi,0) then begin
              // AlertError('Standard-Drucker festlegen (2).',LastErrStr);
              exit;
            end;
          end;
          result:=true;
        finally FreeMem(pi) end;
      finally ClosePrinter(c1) end;
    end else ;
      // AlertError('Standard-Drucker festlegen.',
      //            'Der Drucker "'+localPrinter+'" wurde nicht gefunden!');
end;

Regards, Madshi.
0
 

Author Comment

by:swig
ID: 1362839
I am unfamiliar with PPrinterInfo2.  Could you explain?
0
 
LVL 20

Expert Comment

by:Madshi
ID: 1362840
type
  TPrinterInfo2 = record
    pServerName: PAnsiChar;
    pPrinterName: PAnsiChar;
    pShareName: PAnsiChar;
    pPortName: PAnsiChar;
    pDriverName: PAnsiChar;
    pComment: PAnsiChar;
    pLocation: PAnsiChar;
    pDevMode: PDeviceModeA;
    pSepFile: PAnsiChar;
    pPrintProcessor: PAnsiChar;
    pDatatype: PAnsiChar;
    pParameters: PAnsiChar;
    pSecurityDescriptor: PSecurityDescriptor;
    Attributes: DWORD;
    Priority: DWORD;
    DefaultPriority: DWORD;
    StartTime: DWORD;
    UntilTime: DWORD;
    Status: DWORD;
    cJobs: DWORD;
    AveragePPM: DWORD;
  end;

I'm doing this:
(1) Opening the printer.
(2) Getting the size of the PPrinterInfo2, that is needed (the strings are stored behind the structure, so the allocated buffer must be bigger than just the buffer size.
(3) Get the buffer (including the strings).
(4) Now I have the current printer settings.
(5) Change the attributes, so that this printer is the default printer now.
(6) Set the buffer.
(7) Free the buffer.
(8) Close the printer.

Everything clear now?

Regards, Madshi.
0

Featured Post

Concerto Cloud for Software Providers & ISVs

Can Concerto Cloud Services help you focus on evolving your application offerings, while delivering the best cloud experience to your customers? From DevOps to revenue models and customer support, the answer is yes!

Learn how Concerto can help you.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This article explains how to create forms/units independent of other forms/units object names in a delphi project. Have you ever created a form for user input in a Delphi project and then had the need to have that same form in a other Delphi proj…
Objective: - This article will help user in how to convert their numeric value become words. How to use 1. You can copy this code in your Unit as function 2. than you can perform your function by type this code The Code   (CODE) The Im…
In this video, Percona Solution Engineer Rick Golba discuss how (and why) you implement high availability in a database environment. To discuss how Percona Consulting can help with your design and architecture needs for your database and infrastr…
Want to learn how to record your desktop screen without having to use an outside camera. Click on this video and learn how to use the cool google extension called "Screencastify"! Step 1: Open a new google tab Step 2: Go to the left hand upper corn…
Suggested Courses

618 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question