298 lines
12 KiB
HTML
298 lines
12 KiB
HTML
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<?xml version="1.0" encoding="utf-8"?>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
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"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml" lang="en-US" xml:lang="en-us">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<meta name="dc.language" scheme="rfc1766" content="en-us" />
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<!-- All rights reserved. Licensed Materials Property of IBM -->
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<!-- US Government Users Restricted Rights -->
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<!-- Use, duplication or disclosure restricted by -->
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<!-- GSA ADP Schedule Contract with IBM Corp. -->
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<meta name="dc.date" scheme="iso8601" content="2005-09-06" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 1998, 2006" />
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<meta name="security" content="public" />
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<meta name="Robots" content="index,follow"/>
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<meta http-equiv="PICS-Label" content='(PICS-1.1 "http://www.icra.org/ratingsv02.html" l gen true r (cz 1 lz 1 nz 1 oz 1 vz 1) "http://www.rsac.org/ratingsv01.html" l gen true r (n 0 s 0 v 0 l 0) "http://www.classify.org/safesurf/" l gen true r (SS~~000 1))' />
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<title>Example: Using an externally described printer file with an application
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program</title>
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<link rel="stylesheet" type="text/css" href="ibmidwb.css" />
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<link rel="stylesheet" type="text/css" href="ic.css" />
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</head>
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<body>
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<a id="Top_Of_Page" name="Top_Of_Page"></a><!-- Java sync-link -->
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<script language = "Javascript" src = "../rzahg/synch.js" type="text/javascript"></script>
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<a name="rzaluexternalexmp"></a>
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<h3 id="rzaluexternalexmp">Example: Using an externally described printer file with an application
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program</h3>
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<p>This example shows how an application program calls and uses an externally
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described printer file to control how your printed output will look.</p>
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<p>This example consists of:</p>
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<ul>
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<li>An RPG-coded application program that produces mailing labels.</li>
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<li>A printer file that is opened by the application program when the application
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program runs.</li>
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<li>A detailed listing of which parameters from the printer file are used
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by the application program and at what point during the processing of the
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application program they are used.</li>
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<li>A detailed listing of the DDS keywords and an explanation of which DDS
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keywords are used by the mailing label application program.</li></ul>
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<p>This is the RPG-coded application program. The numbers within the program
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correspond to the list on the following pages. That list explains how this
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program works and specifically how the program opens and uses the printer
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file.</p>
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<ul>
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<li>Part <span class="bold">(1)</span> opens the printer file.</li>
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<li>Part <span class="bold">(2)</span> sends the output to the designated output
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queue.</li>
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<li>Part <span class="bold">(3)</span> closes the opened files.</li>
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<li>Part <span class="bold">(4)</span> processes the data.</li></ul>
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<p><span class="bold">Note:</span> Read the <a href="rzalucodedisclaimer.htm#rzalucodedisclaimer">Code disclaimer information</a> for
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important legal information.</p>
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<p></p>
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<pre class="xmp">************************************************************************
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FADDRESS IF E K DISK
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<span class="bold">(1)</span> FLABELPR3O E PRINTER
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************************************************************************
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CTAR 20 1
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CSAR 30 1
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STAR 2 1
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ZPAR 8 1
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READ ADDRESS 10
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************************************************************************
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WRITEHEADNG
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*IN10 DOWEQ'0'
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EXSR CKCITY
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<span class="bold">(2)</span> WRITEDETAIL1
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ADD2 IFNE *BLANKS
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WRITEDETAIL3
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END
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WRITEDETAIL4
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READ ADDRESS 10
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END
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************************************************************************
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************************************************************************
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<span class="bold">(3)</span> MOVE '1' *INLR
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************************************************************************
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CKCITY BEGSR
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MOVEA*BLANKS CTAR
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MOVEA*BLANKS STAR
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MOVEA*BLANKS ZPAR
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MOVEA*BLANKS CSAR
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MOVEACITY CTAR
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MOVEAST STAR
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MOVEAZIP ZPAR
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Z-ADD1 X 20
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Z-ADD1 Y 20
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EXSR LOOKBL 1ST WORD</pre><p class="indatacontent"> </p>
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<pre class="xmp"> ADD 1 X
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CTAR,X IFGT *BLANKS 2ND WORD
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MOVE ' ' CSAR,Y
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ADD 1 Y
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EXSR LOOKBL
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ADD 1 X
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CTAR,X IFGT *BLANKS 3RD WORD
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MOVE ' ' CSAR,Y
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ADD 1 Y
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<span class="bold">(4)</span> EXSR LOOKBL
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END
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END
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MOVE ',' CSAR,Y
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ADD 1 Y
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MOVE ' ' CSAR,Y
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ADD 1 Y
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MOVE STAR,1 CSAR,Y
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ADD 1 Y
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MOVE STAR,2 CSAR,Y
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ADD 1 Y
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MOVE ' ' CSAR,Y
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ADD 1 Y
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MOVE ' ' CSAR,Y
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ADD 1 Y
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Z-ADD1 X
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X DOWLT9
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MOVE ZPAR,X CSAR,Y
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ADD 1 Y
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ADD 1 X
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END
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MOVEACSAR CTSTZP 30
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MOVEACSAR CTSTZ2 30
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ENDSR
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LOOKBL BEGSR
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CTAR,X DOWGT*BLANKS
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MOVE CTAR,X CSAR,Y
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ADD 1 X
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ADD 1 Y
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END
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ENDSR
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******************************************************************</pre>
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<p><span class="bold">Open processing</span></p>
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<p></p><blockquote>Part <span class="bold">(1)</span> of the application program opens files
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that are called by the application program. Among those, and of particular
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interest at this point, is the printer file whose name is LABELPR3. You can
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locate LABELPR3 next to <span class="bold">(1)</span> in the program listing.
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<p>A printer file is opened to prepare the system so that the application can
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put data into a spooled file or print it out directly to a printer. Information
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from the high-level language application program, the printer file, and any
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printer file overrides is combined.</p>
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<p>The printer file open operation
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is controlled by parameters specified in the printer file, in the high-level
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language program, and in printer file overrides (through the OVRPRTF command).
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See <a href="rzaluoverride.htm#rzaluoverride">Printer file overrides</a> for more information on overrides.</p>
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<p>As an example, if the printer file specified lines per inch (LPI) of 8, and
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an Override with Printer File (OVRPRTF) command specified an LPI of 6, the
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LPI of 6 would be used since the override value specified by the OVRPRTF command
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takes precedence over the LPI value specified in the printer file.</p>
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<p>The following list contains parameters from the printer file LABELPRT. These
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are the parameters that the application program accesses or looks at when
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it opens the printer file. They are the majority of the parameters in the
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printer file, but not all of them. When the application looks at each parameter,
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it finds a value specified for each parameter. For a description of each
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parameter, see the Create Printer File (<a href="../cl/crtprtf.htm">CRTPRTF</a>)
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CL command. </p>
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<pre class="xmp">FILE
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DEV
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DEVTYPE
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CVTLINDTA
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PAGESIZE
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LPI
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UOM
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CPI
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OVRFLW
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RPLUNPRT
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FIDELITY
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CTLCHAR
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PRTQLTY
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FORMFEED
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DRAWER
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OUTBIN
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FONT
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CHRID
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DECFMT
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FNTCHRSET
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CDEFNT
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PAGDFN
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FORMDF
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AFPCHARS
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TBLREFCHR
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PAGRTT
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PRTTXT
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JUSTIFY
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DUPLEX
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IPDSPASTHR
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USRRSCLIBL
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CORNERSTPL
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EDGESTITCH
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SADLSTITCH
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FNTRSL
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SPOOL
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SCHEDULE
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USRDTA
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SPLFOWN
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USRDFNOPT
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USRDFNDTA
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USRDFNOBJ
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IGCDTA
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IGCEXNCR
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IGCCHRTT
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IGCCPI
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IGCSOSI
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IGCCDEFNT
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WAITFILE
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SHARE
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LVLCHK
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AUT
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TEXT</pre></blockquote>
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<p><span class="bold">Output processing</span></p>
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<p></p><blockquote>Part <span class="bold">(2)</span> of the application program performs
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the operations of reading, compiling, and sending the output to the output
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queue specified in the OUTQ parameter of the CRTPRTF command, or to the printer
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specified in the DEV parameter of the CRTPRTF command. In this example, the
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SPOOL parameter has a value of (*YES), which means the output will become
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a spooled file in the designated output queue.
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<p>The following printer file
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parameters from the CRTPRTF command are parameters that are looked at by the
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application program during the output processing. The DDS is compiled before
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the application program runs. The application program never looks at the DDS
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file and member, only at the compiled results.</p>
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<p>Since this example uses
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DDS, look at <span class="bold">(1)</span> in the program listing and see that
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the name of the printer file is LABELPR3. LABELPR3 was compiled using the
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source from the member and file that are listed here. </p>
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<pre class="xmp">SRCFILE
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SRCMBR
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FOLD
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ALIGN
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CHLVAL
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PRTTXT
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REDUCE
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MULTIUP
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FRONTMGN
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BACKMGN
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FRONTOVL
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BACKOVL
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MAXRCDS
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DFRWRT
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OPTION
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GENLVL</pre></blockquote>
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<p><span class="bold">Data description specifications</span></p>
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<p></p><blockquote>Below is the example of the compiled DDS used by the RPG program. You
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can update the DDS; however, you must then recompile it.
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<p></p>
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<pre class="xmp">000100900115 R HEADNG
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000200900115 3 2'MAILING LABELS'
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000300900115
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000400900115 R DETAIL1
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000500900115 NAME 25 2 2UNDERLINE
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000600900115 ADD1 25 3 2
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000700900115 R DETAIL3
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000800900115 ADD2 25 2SPACEB(1)
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000900900115 R DETAIL4
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001000900115 CTSTZP 30 2HIGHLIGHT SPACEB(1)</pre>
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<p>This example uses three DDS keywords: SPACEB, UNDERLINE, and
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HIGHLIGHT.</p>
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<p>DDS and its associated keywords can only be used if the
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SRCFILE parameter contains the name of the file and the SRCMBR parameter
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contains the name of the member that the DDS source resides in.</p>
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<p>For
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a description of DDS keywords for printer files and more detailed information
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on DDS source files, see <a href="../rzakd/kickoff.htm">DDS Reference: Printer files</a> in the Programming category.</p></blockquote>
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<p><span class="bold">Close processing</span></p>
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<p></p><blockquote>Part <span class="bold">(3)</span> of the application program performs
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the close operations of the application program.
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<p>When the application program
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has finished the output processing part of the application program, it performs
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a close operation on all the files it opened during the open processing of
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the application program.</p>
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<p>The application program looks at the SCHEDULE
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parameter from the CRTPRTF command during the close portion of the application
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program.</p></blockquote>
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<p><span class="bold">Output from the example</span></p>
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<p></p><blockquote>
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<pre class="xmp"><span class="underlined">Ann White</span>
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Box 123
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RR 1
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<span class="bold">Anytown, IA 12345</span>
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<span class="underlined">Tom Smith</span>
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123 Main St.
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<span class="bold">Somewhere, IN 54321</span></pre></blockquote>
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<a id="Bot_Of_Page" name="Bot_Of_Page"></a>
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</body>
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</html>
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