Solved

get/set default printer

Posted on 1997-10-02
2
366 Views
Last Modified: 2013-11-19
How can I determine the default printer?  And changing it?
0
Comment
Question by:dmetzler
2 Comments
 
LVL 8

Accepted Solution

by:
gelbert earned 50 total points
ID: 1307377
Artical from MSDN: keyword "default printer"

Getting/Setting the Default Printer from Windows
 
SUMMARY
The "device=" entry in the [windows] section of WIN.INI refers to the default printer. The way to change it is to call WriteProfileString("windows", "device", szNewPrinterSpec), where szNewPrinterSpec is of the form "printer name, printer driver base filename, port connected to printer". For example:

   HP LaserJet IIISi,HPPCL5MS,LPT1:



MORE INFORMATION
The currently installed printers are contained in the WIN.INI [devices] section. It is possible to build a list of the installed printers by calling GetProfileString("devices", NULL, "", szDriverNames, sizeof(szDriverNames)). This will fill the szDriverNames with the names of all printers installed separated by a null byte, with a double null byte at the end of the list.

Choose the new printer from the list provided and call

GetProfileString("devices", szDriverRequested, "", szPrinter, sizeof(szPrinter)) with szDriverRequested set to the printer name requested. Once the call returns, the szPrinter will contain the rest of the information needed to create the szNewPrinterSpec. Create a new szPrinterSpec from both szPrinterRequested and szPrinter and make the call.
Once WIN.INI is updated, call SendMessage(HWND_BROADCAST, WM_WININICHANGE, 0, 0L) to send the correct notification to all top level windows after WIN.INI gets changed programmatically. Applications that care about WIN.INI listen for this message and reread WIN.INI as needed.

The following code gets and sets the default printer:

   #include <windows.h>
   #include <string.h>

   #define MAXSTRING 255

   int PASCAL WinMain(HINSTANCE hInst, HINSTANCE hPrevInst,
                      LPSTR lpszCmdLine, int CmdShow)
   {
      char szFmtStr  [] = "%s,%s";
      char szDevice  [] = "device";
      char szDevices [] = "devices";
      char szWindows [] = "windows";
      char szDefault [] = "default";
      char szInstPrn [] = "Set this installed printer as default?";
      char szDefPrn  [] = "The default printer";
      char szBuff    [MAXSTRING];
      char szRetBuff [MAXSTRING];
      char szVal     [MAXSTRING];
      int nBytes;
      HLOCAL hLocal;
      PSTR pszBuf, pszKey;

      nBytes = GetProfileString(szWindows, szDevice, szDefault, szRetBuff,
                                sizeof(szRetBuff));

      MessageBox(NULL,szRetBuff, szDefPrn, MB_OK | MB_ICONINFORMATION);

      hLocal = LocalAlloc(LHND, 1024);
      pszBuf = (PSTR) LocalLock(hLocal);

      GetProfileString(szDevices, NULL, szDefault, pszBuf, 1024);

      for (pszKey = pszBuf; *pszKey != '\0'; pszKey += strlen(pszKey) + 1)
      {
         int nID;

         GetProfileString(szDevices, pszKey, szDefault,
                          szVal, sizeof(szVal));
         wsprintf(szBuff, szFmtStr, (LPSTR) pszKey, (LPSTR) szVal);
         nID = MessageBox(NULL, szBuff, szInstPrn, MB_YESNOCANCEL
                         | MB_ICONQUESTION);
         switch(nID)
         {
            case IDNO:
               continue;

            case IDYES:
               WriteProfileString(szWindows, szDevice, szBuff);
               WriteProfileString(NULL, NULL, NULL);
               SendMessage(HWND_BROADCAST, WM_WININICHANGE, 0, 0L);

            default:
               break;

         }
         break;
      }
      LocalUnlock(hLocal);
      LocalFree(hLocal);
      return(0);
   }

0
 

Author Comment

by:dmetzler
ID: 1307378
Thanks for the detailed response!
0

Featured Post

Problems using Powershell and Active Directory?

Managing Active Directory does not always have to be complicated.  If you are spending more time trying instead of doing, then it's time to look at something else. For nearly 20 years, AD admins around the world have used one tool for day-to-day AD management: Hyena. Discover why

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
repeatEnd java challenge 42 84
windows 10 how make picture as desktop background 2 62
centeredAverage challenge 8 164
lucky13 challenge 11 144
This is to be the first in a series of articles demonstrating the development of a complete windows based application using the MFC classes.  I’ll try to keep each article focused on one (or a couple) of the tasks that one may meet.   Introductio…
Introduction: The undo support, implementing a stack. Continuing from the eigth article about sudoku.   We need a mechanism to keep track of the digits entered so as to implement an undo mechanism.  This should be a ‘Last In First Out’ collec…
This video will show you how to get GIT to work in Eclipse.   It will walk you through how to install the EGit plugin in eclipse and how to checkout an existing repository.
Although Jacob Bernoulli (1654-1705) has been credited as the creator of "Binomial Distribution Table", Gottfried Leibniz (1646-1716) did his dissertation on the subject in 1666; Leibniz you may recall is the co-inventor of "Calculus" and beat Isaac…

772 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