102 lines
6.0 KiB
HTML
102 lines
6.0 KiB
HTML
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<meta name="DC.Title" content="FRCDTA (Force Data) keyword for display files" />
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<meta name="abstract" content="Use this record-level keyword to display a record format immediately, without waiting for the next input or input/output operation. When the buffer is partially full, the FRCDTA keyword can be used to clear the buffer." />
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<meta name="description" content="Use this record-level keyword to display a record format immediately, without waiting for the next input or input/output operation. When the buffer is partially full, the FRCDTA keyword can be used to clear the buffer." />
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<meta name="DC.subject" content="FRCDTA (Force Data) keyword, Force Data (FRCDTA) keyword" />
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<meta name="keywords" content="FRCDTA (Force Data) keyword, Force Data (FRCDTA) keyword" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 2001, 2006" />
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<link rel="stylesheet" type="text/css" href="./ic.css" />
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<title>FRCDTA (Force Data) keyword for display files</title>
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</head>
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<body id="rzakcmstdffdta"><a name="rzakcmstdffdta"><!-- --></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">FRCDTA (Force Data) keyword for display files</h1>
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<div><p>Use this record-level keyword to display a record format immediately,
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without waiting for the next input or input/output operation. When the buffer
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is partially full, the FRCDTA keyword can be used to clear the buffer.</p>
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<div class="section"> <div class="note"><span class="notetitle">Note:</span> If this keyword is used after each write statement, performance
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problems will occur.</div>
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<p>This keyword has no parameters.</p>
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<p>When this keyword is in effect for
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a record format, the record format is displayed as if you had specified DFRWRT(*NO)
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on the Create Display File (CRTDSPF) command or the Change Display File (CHGDSPF)
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command.</p>
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<p>You can use this keyword when DFRWRT(*YES) is in effect for
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the display file and your program does several output operations before doing
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an input operation. With DFRWRT(*YES) specified, none of the record formats
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is displayed until the input operation. There might be a long delay for the
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workstation user while the program completes its processing. You can specify
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FRCDTA for a record format that is displayed first. This record format tells
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the workstation user that the delay is normal. For a step-by-step description,
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see the example in this topic.</p>
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<p>FRCDTA can be specified once for each
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record format.</p>
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<p>Option indicators are valid for this 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 FRCDTA keyword.</p>
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<pre>|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
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00010A* Following record format displays in progress message
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00020A R INPROG LOCK
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00030A FRCDTA
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00040A 12 21'Please wait; +
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00050A operations in progress'
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A
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00060A* Following record format uses upper part of screen
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00070A R RCD1 OVERLAY
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00080A 1 34'Sample Title'
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00090A FLD1 8 0 3 2
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00100A FLD2 20 4 2
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A
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00110A* Following record format uses middle part of screen
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00120A R RCD2 OVERLAY
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00120A FLDA 8 11 2
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00140A FLDB 18 12 2
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A
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00150A* Following record format uses lower part of screen
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00160A R RCD3 OVERLAY
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00170A FLDC 8 B 15 2
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00180A FLDD 8 B 16 2
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A</pre>
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<p>Three record formats (RCD1,
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RCD2, and RCD3) are used to create a single display; each of these record
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formats uses only a part of the display. Record format INPROG prepares the
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workstation user for the delay while the other three record formats are prepared.
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The program does the following operations:</p>
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<ul><li>Displays record format INPROG. With FRCDTA specified, this displays the
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in-progress notice immediately. The keyboard remains locked because the LOCK
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keyword is specified.</li>
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<li>Continues processing to prepare the other three record formats (RCD1,
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RCD2, and RCD3), then displays them. Since they overlap record format INPROG,
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it is erased.</li>
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<li>Reads record format RCD3. This unlocks the keyboard and the workstation
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user can respond to the complete display.</li>
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</ul>
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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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