86 lines
5.1 KiB
HTML
86 lines
5.1 KiB
HTML
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE html
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PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html lang="en-us" xml:lang="en-us">
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<head>
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<meta name="DC.Type" content="reference" />
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<meta name="DC.Title" content="PROTECT (Protect) keyword for display files" />
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<meta name="abstract" content="Use this record-level keyword with the OVERLAY keyword to specify that when the record you are defining is displayed, all input-capable fields already on the display are to be changed to output-only fields." />
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<meta name="description" content="Use this record-level keyword with the OVERLAY keyword to specify that when the record you are defining is displayed, all input-capable fields already on the display are to be changed to output-only fields." />
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<meta name="DC.subject" content="PROTECT (Protect) keyword" />
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<meta name="keywords" content="PROTECT (Protect) keyword" />
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<meta name="DC.Relation" scheme="URI" content="rzakcmstkeyent.htm" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 2001, 2006" />
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<meta name="DC.Rights.Owner" content="(C) Copyright IBM Corporation 2001, 2006" />
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<meta name="DC.Format" content="XHTML" />
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<meta name="DC.Identifier" content="rzakcmstdfptect" />
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<link rel="stylesheet" type="text/css" href="./ibmdita.css" />
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<link rel="stylesheet" type="text/css" href="./ic.css" />
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<title>PROTECT (Protect) keyword for display files</title>
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</head>
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<body id="rzakcmstdfptect"><a name="rzakcmstdfptect"><!-- --></a>
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<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
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<h1 class="topictitle1">PROTECT (Protect) keyword for display files</h1>
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<div><p>Use this record-level keyword with the OVERLAY keyword
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to specify that when the record you are defining is displayed, all input-capable
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fields already on the display are to be changed to output-only fields.</p>
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<div class="section"><p>This protects them from input typing. This keyword does not affect
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the record format in which it is specified. The data contents of the affected
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fields are not changed, but your program cannot read them unless it first
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displays the record formats again in which the input-capable fields are specified.</p>
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<p>To
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protect a single field from input typing, see the DSPATR(PR) keyword.</p>
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<p>This
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keyword has no parameters.</p>
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<p>The OVERLAY keyword must be specified in
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the record format in which PROTECT is specified. Also, either the OVERLAY
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keyword or the CLRL keyword must be in effect for PROTECT to be in effect.</p>
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<p>You
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can use PROTECT to protect input-capable fields in other records only on the
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first output operation for which you have selected PUTOVR. On subsequent output
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operations, PROTECT is in effect only if the PUTOVR keyword is not in effect.</p>
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<p>If
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the ERASEINP and PROTECT keywords are both in effect for an output operation,
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the <span class="keyword">i5/OS™</span> operating system first
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erases the input-capable fields specified on the ERASEINP parameter value,
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then protects all input-capable fields on the display from input typing.</p>
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<p>A
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warning message appears at file creation time if the PROTECT keyword is specified
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on a record with the DSPMOD keyword. At run time, the PROTECT keyword is ignored
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when the display mode changes.</p>
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<p>Option indicators are valid for this
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keyword.</p>
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</div>
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<div class="example"><h4 class="sectiontitle">Example</h4><p>The following example shows how to specify
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the PROTECT keyword.</p>
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<pre>|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
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00010A R RECORD1
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00020A FLD1 5 I 5 3
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00030A
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00040A R RECORD2 OVERLAY
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00050A 32 PROTECT
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00060A FLDA 10 I 6 3
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A</pre>
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<p>In this example, RECORD1 has an input-capable field that
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has been displayed and read and that should be left on the display while RECORD2
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is displayed and read. To prevent further entries in FLD1 in RECORD1, send
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an output operation to RECORD2 with PROTECT in effect. When this is done,
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FLDA is not protected, but FLD1 is protected.</p>
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</div>
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</div>
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<div>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rzakcmstkeyent.htm" title="You type the keyword entries that define display files in positions 45 through 80 (functions).">DDS keyword entries for display files (positions 45 through 80)</a></div>
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</div>
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</div>
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</body>
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</html>
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